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Class   G9BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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CROSS-REFERENCE ART COLLECTIONS
 
[List of Pre Grant Publications for class G9B subclass 3][List of Patents for class G9B subclass 3] 3 RECORDING BY MECHANICAL CUTTING, DEFORMING OR PRESSING, E.G. OF GROOVES OR PITS; REPRODUCING BY MECHANICAL SENSING; RECORD CARRIERS THEREFOR G9B/11 [N: AND G9B/13] TAKE PRECEDENCE; RECORDING BY CUTTING OR DEFORMING USING LASER BEAM G9B/7, USING ELECTRON BEAM G9B/9.025) {G11B 3/00}
[List of Pre Grant Publications for class G9B subclass 3.001][List of Patents for class G9B subclass 3.001] 3.001 Subclass 3.001 indent level is 1 [N: with vibrating mechanical coupling means between pick-up element and sound producing element] {G11B 3/00A}
 [List of Pre Grant Publications for class G9B subclass 3.002][List of Patents for class G9B subclass 3.002] 3.002 Subclass 3.002 indent level is 2 [N: element with stationary record carriers] {G11B 3/00A1}
[List of Pre Grant Publications for class G9B subclass 3.003][List of Patents for class G9B subclass 3.003] 3.003 Subclass 3.003 indent level is 1 [N: Devices for transmitting, directing, amplifying sound (in general G10K11/18)] {G11B 3/00B}
 [List of Pre Grant Publications for class G9B subclass 3.004][List of Patents for class G9B subclass 3.004] 3.004 Subclass 3.004 indent level is 2 [N: through hollow arms] {G11B 3/00B1}
 [List of Pre Grant Publications for class G9B subclass 3.005][List of Patents for class G9B subclass 3.005] 3.005 Subclass 3.005 indent level is 2 [N: using horns] {G11B 3/00B2}
 [List of Pre Grant Publications for class G9B subclass 3.006][List of Patents for class G9B subclass 3.006] 3.006 Subclass 3.006 indent level is 1 [N: Devices for controlling sound e.g. using acoustical impedances, using valves] {G11B 3/00C}
 [List of Pre Grant Publications for class G9B subclass 3.007][List of Patents for class G9B subclass 3.007] 3.007 Subclass 3.007 indent level is 1 [N: for digital information] {G11B 3/00D}
[List of Pre Grant Publications for class G9B subclass 3.008][List of Patents for class G9B subclass 3.008] 3.008 Subclass 3.008 indent level is 1 Arrangements of heads (styli G9B/3.076) {G11B 3/02}
 [List of Pre Grant Publications for class G9B subclass 3.009][List of Patents for class G9B subclass 3.009] 3.009 Subclass 3.009 indent level is 2 Multiple, convertible, or alternative transducing arrangements [N: contains no documents see G9B/3.075] {G11B 3/04}
 [List of Pre Grant Publications for class G9B subclass 3.01][List of Patents for class G9B subclass 3.01] 3.01 Subclass 3.01 indent level is 2 Determining or indicating positions of head {G11B 3/06}
[List of Pre Grant Publications for class G9B subclass 3.011][List of Patents for class G9B subclass 3.011] 3.011 Subclass 3.011 indent level is 2 Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers [N: for transducing G9B/3.052, G9B/3.071] {G11B 3/08}
[List of Pre Grant Publications for class G9B subclass 3.012][List of Patents for class G9B subclass 3.012] 3.012 Subclass 3.012 indent level is 3 [N: using automatic means (G9B/3.044 takes precedence; [N: if particularly adapted for record-changers see G9B/17.045 and subgroups]) {G11B 3/085}
[List of Pre Grant Publications for class G9B subclass 3.013][List of Patents for class G9B subclass 3.013] 3.013 Subclass 3.013 indent level is 4 [N: Control of drive of the head] {G11B 3/085A}
[List of Pre Grant Publications for class G9B subclass 3.023][List of Patents for class G9B subclass 3.023] 3.023 Subclass 3.023 indent level is 4 [N: Driving the head] {G11B 3/085B}
 [List of Pre Grant Publications for class G9B subclass 3.043][List of Patents for class G9B subclass 3.043] 3.043 Subclass 3.043 indent level is 3 using manual means only (G9B/3.044 takes precedence) {G11B 3/09}
[List of Pre Grant Publications for class G9B subclass 3.044][List of Patents for class G9B subclass 3.044] 3.044 Subclass 3.044 indent level is 3 for repeating a part of the record; for beginning or stopping at a desired point of the record {G11B 3/095}
[List of Pre Grant Publications for class G9B subclass 3.051][List of Patents for class G9B subclass 3.051] 3.051 Subclass 3.051 indent level is 2 Arranging, supporting, or driving of heads or of transducers relatively to record carriers [N: guiding record carriers G9B/17, driving record carriers G9B/19] {G11B 3/10}
[List of Pre Grant Publications for class G9B subclass 3.052][List of Patents for class G9B subclass 3.052] 3.052 Subclass 3.052 indent level is 3 Supporting in balanced, counterbalanced or loaded operative position [N: during transducing], e.g. loading in direction of traverse] {G11B 3/12}
[List of Pre Grant Publications for class G9B subclass 3.068][List of Patents for class G9B subclass 3.068] 3.068 Subclass 3.068 indent level is 3 Supporting in an inoperative position {G11B 3/30}
[List of Pre Grant Publications for class G9B subclass 3.071][List of Patents for class G9B subclass 3.071] 3.071 Subclass 3.071 indent level is 3 Driving or guiding during transducing operation {G11B 3/34}
 [List of Pre Grant Publications for class G9B subclass 3.075][List of Patents for class G9B subclass 3.075] 3.075 Subclass 3.075 indent level is 3 with provision for adaptation or interchange of heads {G11B 3/42}
[List of Pre Grant Publications for class G9B subclass 3.076][List of Patents for class G9B subclass 3.076] 3.076 Subclass 3.076 indent level is 1 Styli, e.g. sapphire, diamond {G11B 3/44}
 [List of Pre Grant Publications for class G9B subclass 3.077][List of Patents for class G9B subclass 3.077] 3.077 Subclass 3.077 indent level is 2 [N: Styli particularly adapted for sensing video discs] {G11B 3/44A}
[List of Pre Grant Publications for class G9B subclass 3.078][List of Patents for class G9B subclass 3.078] 3.078 Subclass 3.078 indent level is 2 Constructions or forms [N: Disposition or mounting], e.g. attachment of point to shank [N: attachment of stylus directly to transducer H04R1/16] {G11B 3/46}
 [List of Pre Grant Publications for class G9B subclass 3.08][List of Patents for class G9B subclass 3.08] 3.08 Subclass 3.08 indent level is 2 Anvils or other supports opposing stylus forces {G11B 3/50}
 [List of Pre Grant Publications for class G9B subclass 3.081][List of Patents for class G9B subclass 3.081] 3.081 Subclass 3.081 indent level is 2 Arrangements permitting styli to yield under excessive pressure {G11B 3/52}
 [List of Pre Grant Publications for class G9B subclass 3.082][List of Patents for class G9B subclass 3.082] 3.082 Subclass 3.082 indent level is 2 Storing; manipulating, e.g. feeding styli to and from heads (needle boxes, receptacles for needles B65D85/24) {G11B 3/54}
 [List of Pre Grant Publications for class G9B subclass 3.083][List of Patents for class G9B subclass 3.083] 3.083 Subclass 3.083 indent level is 2 Sharpening (grinding B24B3/00, B24B19/00) {G11B 3/56}
[List of Pre Grant Publications for class G9B subclass 3.084][List of Patents for class G9B subclass 3.084] 3.084 Subclass 3.084 indent level is 1 Cleaning record carriers or styli, e.g. removing shavings or dust [N: or electrostatic charges] (brushes A46B; cleaning in general B08B) [N: carrying-off electrostatic charges in general H05F3/00] {G11B 3/58}
[List of Pre Grant Publications for class G9B subclass 3.085][List of Patents for class G9B subclass 3.085] 3.085 Subclass 3.085 indent level is 2 [N: during transducing operation] {G11B 3/58A}
 [List of Pre Grant Publications for class G9B subclass 3.094][List of Patents for class G9B subclass 3.094] 3.094 Subclass 3.094 indent level is 2 [N: before or after transducing operation] {G11B 3/58B}
[List of Pre Grant Publications for class G9B subclass 3.095][List of Patents for class G9B subclass 3.095] 3.095 Subclass 3.095 indent level is 1 Turntables for record carriers (forming rotor of dynamo-electric motor H02K) [N: contains no documents, see G9B/19.028] {G11B 3/60}
 [List of Pre Grant Publications for class G9B subclass 3.096][List of Patents for class G9B subclass 3.096] 3.096 Subclass 3.096 indent level is 2 Damping of vibrations of record carriers on turntables [N: see provisionally also G9B/3.095, G9B/3.094 and G9B/17.002; contains no documents, see G9B/19.029] {G11B 3/61}
 [List of Pre Grant Publications for class G9B subclass 3.097][List of Patents for class G9B subclass 3.097] 3.097 Subclass 3.097 indent level is 1 Re-recording, i.e. transcribing information from one grooved record carrier on to one or more similar or dissimilar record carriers [N: (by varying the order of the information G9B/27.009, G9B/27.013)] {G11B 3/64}
 [List of Pre Grant Publications for class G9B subclass 3.098][List of Patents for class G9B subclass 3.098] 3.098 Subclass 3.098 indent level is 1 Erasing information, e.g. for reuse of record carrier {G11B 3/66}
[List of Pre Grant Publications for class G9B subclass 3.099][List of Patents for class G9B subclass 3.099] 3.099 Subclass 3.099 indent level is 1 Record carriers {G11B 3/68}
 [List of Pre Grant Publications for class G9B subclass 3.1][List of Patents for class G9B subclass 3.1] 3.1 Subclass 3.1 indent level is 2 [N: comprising protective coatings e.g. anti static, anti-friction] {G11B 3/68A}
 [List of Pre Grant Publications for class G9B subclass 3.101][List of Patents for class G9B subclass 3.101] 3.101 Subclass 3.101 indent level is 2 [N: Intermediate mediums] {G11B 3/68B}
 [List of Pre Grant Publications for class G9B subclass 3.102][List of Patents for class G9B subclass 3.102] 3.102 Subclass 3.102 indent level is 2 [N: Testing thereof (investigating chemical or physical properties of materials G01N)] {G11B 3/68C}
[List of Pre Grant Publications for class G9B subclass 3.103][List of Patents for class G9B subclass 3.103] 3.103 Subclass 3.103 indent level is 2 characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers (processes involving a single technical art and for which provision exists elsewhere, see the relevant places, e.g. B29D17/00) {G11B 3/70}
[List of Pre Grant Publications for class G9B subclass 3.107][List of Patents for class G9B subclass 3.107] 3.107 Subclass 3.107 indent level is 2 Groove formations, e.g. run-in groove, run-out groove {G11B 3/72}
 [List of Pre Grant Publications for class G9B subclass 3.11][List of Patents for class G9B subclass 3.11] 3.11 Subclass 3.11 indent level is 2 Multiple-track arrangements {G11B 3/78}
 [List of Pre Grant Publications for class G9B subclass 3.111][List of Patents for class G9B subclass 3.111] 3.111 Subclass 3.111 indent level is 2 incorporating subsidiary guide means for heads, other than modulated grooves; Part-formed unmodulated grooves for conversion into transducing grooves {G11B 3/80}
 [List of Pre Grant Publications for class G9B subclass 3.112][List of Patents for class G9B subclass 3.112] 3.112 Subclass 3.112 indent level is 2 with means indicating prior or unauthorised use {G11B 3/90}
[List of Pre Grant Publications for class G9B subclass 5][List of Patents for class G9B subclass 5] 5 RECORDING BY MAGNETISATION OR DEMAGNETISATION OF A RECORD CARRIER; REPRODUCING BY MAGNETIC MEANS; RECORD CARRIERS THEREFOR (G9B/11 [N: AND G9B/13] TAKE PRECEDENCE) {G11B 5/00}
 [List of Pre Grant Publications for class G9B subclass 5.001][List of Patents for class G9B subclass 5.001] 5.001 Subclass 5.001 indent level is 1 Recording on, or reproducing or erasing from, magnetic drums (G9B/19 takes precedence) {G11B 5/004}
[List of Pre Grant Publications for class G9B subclass 5.002][List of Patents for class G9B subclass 5.002] 5.002 Subclass 5.002 indent level is 1 Recording on, or reproducing or erasing from, magnetic tapes, [N: sheets, e.g. cards,] or wires (G9B/15 [N: G9B/19] take precedence; [N: bulk transferring of information magnetisation for re-recording G9B/5.309; marking record carriers in digital fashion G06K)] {G11B 5/008}
[List of Pre Grant Publications for class G9B subclass 5.003][List of Patents for class G9B subclass 5.003] 5.003 Subclass 5.003 indent level is 2 [N: magnetic sheets (rotating sheets G9B/5.024)] {G11B 5/008S}
[List of Pre Grant Publications for class G9B subclass 5.005][List of Patents for class G9B subclass 5.005] 5.005 Subclass 5.005 indent level is 2 [N: magnetic tapes] {G11B 5/008T}
[List of Pre Grant Publications for class G9B subclass 5.024][List of Patents for class G9B subclass 5.024] 5.024 Subclass 5.024 indent level is 1 Recording on, or reproducing or erasing from, magnetic discs (G9B/17, G9B/19 take precedence) {G11B 5/012}
 [List of Pre Grant Publications for class G9B subclass 5.025][List of Patents for class G9B subclass 5.025] 5.025 Subclass 5.025 indent level is 2 using magnetic foils {G11B 5/016}
[List of Pre Grant Publications for class G9B subclass 5.026][List of Patents for class G9B subclass 5.026] 5.026 Subclass 5.026 indent level is 1 Recording, reproducing, or erasing methods; Read, write or erase circuits therefor (timing or synchronising arrangements G9B/27.017) {G11B 5/02}
[List of Pre Grant Publications for class G9B subclass 5.027][List of Patents for class G9B subclass 5.027] 5.027 Subclass 5.027 indent level is 2 Erasing {G11B 5/024}
[List of Pre Grant Publications for class G9B subclass 5.029][List of Patents for class G9B subclass 5.029] 5.029 Subclass 5.029 indent level is 2 Analogue recording {G11B 5/027}
 [List of Pre Grant Publications for class G9B subclass 5.033][List of Patents for class G9B subclass 5.033] 5.033 Subclass 5.033 indent level is 2 Digital recording {G11B 5/09}
[List of Pre Grant Publications for class G9B subclass 5.034][List of Patents for class G9B subclass 5.034] 5.034 Subclass 5.034 indent level is 1 Structure or manufacture of housings or shields for heads {G11B 5/10}
 [List of Pre Grant Publications for class G9B subclass 5.035][List of Patents for class G9B subclass 5.035] 5.035 Subclass 5.035 indent level is 2 Mounting of head within housing [N: or assembling of head and housing (G9B/5.078 takes precedence)] {G11B 5/105}
 [List of Pre Grant Publications for class G9B subclass 5.036][List of Patents for class G9B subclass 5.036] 5.036 Subclass 5.036 indent level is 2 [N: Manufacture of housing] [C9704] {G11B 5/10A}
[List of Pre Grant Publications for class G9B subclass 5.037][List of Patents for class G9B subclass 5.037] 5.037 Subclass 5.037 indent level is 2 Shielding of head against electric or magnetic fields {G11B 5/11}
[List of Pre Grant Publications for class G9B subclass 5.04][List of Patents for class G9B subclass 5.04] 5.04 Subclass 5.04 indent level is 1 Structure or manufacture of heads, e.g. inductive {G11B 5/127}
 [List of Pre Grant Publications for class G9B subclass 5.041][List of Patents for class G9B subclass 5.041] 5.041 Subclass 5.041 indent level is 2 [N: Assembling or shaping of elements (G9B/5.044 takes precedence)] {G11B 5/127A}
[List of Pre Grant Publications for class G9B subclass 5.042][List of Patents for class G9B subclass 5.042] 5.042 Subclass 5.042 indent level is 2 [N: with "composite" cores, i.e. cores composed in some parts of magnetic particles and in some other parts of magnetic metal layers] {G11B 5/127C}
 [List of Pre Grant Publications for class G9B subclass 5.044][List of Patents for class G9B subclass 5.044] 5.044 Subclass 5.044 indent level is 2 [N: specially adapted for magnetisations perpendicular to the surface of the record carrier] {G11B 5/127P}
[List of Pre Grant Publications for class G9B subclass 5.045][List of Patents for class G9B subclass 5.045] 5.045 Subclass 5.045 indent level is 2 with cores composed of particles, e.g. with dust core, with ferrite core [N: with cores composed of isolated magnetic particles (in thin films G9B/5.077)] {G11B 5/133}
[List of Pre Grant Publications for class G9B subclass 5.047][List of Patents for class G9B subclass 5.047] 5.047 Subclass 5.047 indent level is 2 with cores being composed of metal sheets, i.e. laminated cores [N: with cores composed of isolated magnetic layers, e.g. sheets (in thin films G9B/5.077)] {G11B 5/147}
 [List of Pre Grant Publications for class G9B subclass 5.05][List of Patents for class G9B subclass 5.05] 5.05 Subclass 5.05 indent level is 2 Construction or disposition of windings {G11B 5/17}
[List of Pre Grant Publications for class G9B subclass 5.051][List of Patents for class G9B subclass 5.051] 5.051 Subclass 5.051 indent level is 2 Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features (G9B/5.068, [N: G9B/5.075], G9B/5.077 take precedence) {G11B 5/187}
[List of Pre Grant Publications for class G9B subclass 5.052][List of Patents for class G9B subclass 5.052] 5.052 Subclass 5.052 indent level is 3 [N: Shaping or contouring of the transducing or guiding surface] {G11B 5/187A}
[List of Pre Grant Publications for class G9B subclass 5.055][List of Patents for class G9B subclass 5.055] 5.055 Subclass 5.055 indent level is 3 [N: "Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers] {G11B 5/187C}
 [List of Pre Grant Publications for class G9B subclass 5.058][List of Patents for class G9B subclass 5.058] 5.058 Subclass 5.058 indent level is 3 the pole pieces being ferrite [N: or other magnetic particles (G9B/5.052 takes precedence; in thin film G9B/5.077)] {G11B 5/193}
 [List of Pre Grant Publications for class G9B subclass 5.059][List of Patents for class G9B subclass 5.059] 5.059 Subclass 5.059 indent level is 3 the pole pieces being of ferrous sheet metal [N: or other magnetic layers (G9B/5.052 takes precedence; in thin film G9B/5.077)] {G11B 5/21}
[List of Pre Grant Publications for class G9B subclass 5.06][List of Patents for class G9B subclass 5.06] 5.06 Subclass 5.06 indent level is 3 Gap features [N: (G9B/5.052, G9B/5.055, G9B/5.068, G9B/5.075, G9B/5.156 and subgroups, G9B/5.16 and subgroups, G9B/5.168 and subgroups take precedence)] {G11B 5/23}
[List of Pre Grant Publications for class G9B subclass 5.063][List of Patents for class G9B subclass 5.063] 5.063 Subclass 5.063 indent level is 3 comprising means for controlling the reluctance of the magnetic circuit [N: in a head with single gap, for co-operation with one track; (G9B/5.067 takes precedence; for plural gaps or plural tracks G9B/5.04, G9B/5.068, G9B/5.075, G9B/5.159 and subgroups)] {G11B 5/245}
 [List of Pre Grant Publications for class G9B subclass 5.067][List of Patents for class G9B subclass 5.067] 5.067 Subclass 5.067 indent level is 3 comprising means for protection against wear [N: in thin film structures G9B/5.079] {G11B 5/255}
[List of Pre Grant Publications for class G9B subclass 5.068][List of Patents for class G9B subclass 5.068] 5.068 Subclass 5.068 indent level is 2 Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track (G9B/5.104 takes precedence [N: in thin film structures G9B/5.077]) {G11B 5/265}
[List of Pre Grant Publications for class G9B subclass 5.075][List of Patents for class G9B subclass 5.075] 5.075 Subclass 5.075 indent level is 2 Structure or manufacture of unitary devices formed of plural heads for more than one track [N: G9B/5.104, G9B/5.159 and subgroups take precedence; in thin film structure G9B/5.077] {G11B 5/29}
[List of Pre Grant Publications for class G9B subclass 5.077][List of Patents for class G9B subclass 5.077] 5.077 Subclass 5.077 indent level is 2 using thin films [N: (G9B/5.042, G9B/5.044, G9B/5.054, G9B/5.055, G9B/5.104, G9B/5.159 take precedence; magnetic thin film structures H01F10/00)] {G11B 5/31}
[List of Pre Grant Publications for class G9B subclass 5.078][List of Patents for class G9B subclass 5.078] 5.078 Subclass 5.078 indent level is 3 [N: Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing] {G11B 5/31B}
[List of Pre Grant Publications for class G9B subclass 5.08][List of Patents for class G9B subclass 5.08] 5.08 Subclass 5.08 indent level is 3 [N: Details (G9B/5.078 takes precedence)] {G11B 5/31D}
 [List of Pre Grant Publications for class G9B subclass 5.081][List of Patents for class G9B subclass 5.081] 5.081 Subclass 5.081 indent level is 4 [N: for improving the magnetic domain structure or avoiding the formation or displacement of undesirable magnetic domains] {G11B 5/31D2}
 [List of Pre Grant Publications for class G9B subclass 5.082][List of Patents for class G9B subclass 5.082] 5.082 Subclass 5.082 indent level is 4 [N: Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks (G9B/5.081, G9B/5.063 take precedence)] {G11B 5/31D4}
[List of Pre Grant Publications for class G9B subclass 5.083][List of Patents for class G9B subclass 5.083] 5.083 Subclass 5.083 indent level is 4 [N: for reducing flux leakage between the electrical coil layers and the magnetic cores or poles or between the magnetic cores or poles] {G11B 5/31D6}
[List of Pre Grant Publications for class G9B subclass 5.086][List of Patents for class G9B subclass 5.086] 5.086 Subclass 5.086 indent level is 4 [N: Disposition of layers] {G11B 5/31D8}
[List of Pre Grant Publications for class G9B subclass 5.094][List of Patents for class G9B subclass 5.094] 5.094 Subclass 5.094 indent level is 3 [N: Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers] {G11B 5/31M}
[List of Pre Grant Publications for class G9B subclass 5.096][List of Patents for class G9B subclass 5.096] 5.096 Subclass 5.096 indent level is 3 [N: Structure of heads comprising at least in the transducing gap regions two magnetic thin films disposed respectively at both sides of the gaps (G9B/5.065, G9B/5.068 take precedence; composite magnetic head structures, e.g. "Metal-In-Gap" heads are classified in G9B/5.04 or G9B/5.051 and subgroups)] {G11B 5/31P}
[List of Pre Grant Publications for class G9B subclass 5.1][List of Patents for class G9B subclass 5.1] 5.1 Subclass 5.1 indent level is 3 [N: Testing] {G11B 5/31T}
 [List of Pre Grant Publications for class G9B subclass 5.103][List of Patents for class G9B subclass 5.103] 5.103 Subclass 5.103 indent level is 2 Erasing heads using permanent magnets (general details therefor G9B/5.045 to G9B/5.067) {G11B 5/325}
[List of Pre Grant Publications for class G9B subclass 5.104][List of Patents for class G9B subclass 5.104] 5.104 Subclass 5.104 indent level is 2 Structure or manufacture of flux-sensitive heads, [N: i.e. for reproduction only; Combination of such heads with means for recording or erasing only] ([N: Single head using magnetic domains for scanning G9B/5.165; multiple head for scanning G9B/5.16 and subgroups]; general details therefor G9B/5.045 to G9B/5.067) {G11B 5/33}
 [List of Pre Grant Publications for class G9B subclass 5.105][List of Patents for class G9B subclass 5.105] 5.105 Subclass 5.105 indent level is 3 with saturated jig, e.g. for detecting second harmonic; balanced flux head {G11B 5/335}
 [List of Pre Grant Publications for class G9B subclass 5.106][List of Patents for class G9B subclass 5.106] 5.106 Subclass 5.106 indent level is 3 [N: using thin films (G9B/5.109, G9B/5.115 take precedence)] {G11B 5/33B}
 [List of Pre Grant Publications for class G9B subclass 5.107][List of Patents for class G9B subclass 5.107] 5.107 Subclass 5.107 indent level is 3 having vibrating elements {G11B 5/35}
[List of Pre Grant Publications for class G9B subclass 5.108][List of Patents for class G9B subclass 5.108] 5.108 Subclass 5.108 indent level is 3 using galvano-magnetic devices, e.g. Hall-effect devices (G9B/5.113 takes precedence) [N: using Hall or Hall-related effect, e.g. planar-Hall effect or pseudo-Hall effect] {G11B 5/37}
[List of Pre Grant Publications for class G9B subclass 5.113][List of Patents for class G9B subclass 5.113] 5.113 Subclass 5.113 indent level is 3 using magneto-resistive devices [N: or effects] {G11B 5/39}
[List of Pre Grant Publications for class G9B subclass 5.114][List of Patents for class G9B subclass 5.114] 5.114 Subclass 5.114 indent level is 4 [N: using magnetic layers or their effects] {G11B 5/39C}
[List of Pre Grant Publications for class G9B subclass 5.115][List of Patents for class G9B subclass 5.115] 5.115 Subclass 5.115 indent level is 5 [N: layers of thin film] {G11B 5/39C2}
[List of Pre Grant Publications for class G9B subclass 5.116][List of Patents for class G9B subclass 5.116] 5.116 Subclass 5.116 indent level is 6 [N: the films being part of integrated structures] {G11B 5/39C2C}
[List of Pre Grant Publications for class G9B subclass 5.117][List of Patents for class G9B subclass 5.117] 5.117 Subclass 5.117 indent level is 7 [N: Details] {G11B 5/39C2C4}
 [List of Pre Grant Publications for class G9B subclass 5.118][List of Patents for class G9B subclass 5.118] 5.118 Subclass 5.118 indent level is 8 [N: where the active read-out elements are transducing in association with active magnetic shields, e.g. magnetically coupled shields (G9B/5.119 takes precedence)] {G11B 5/39C2C4E}
[List of Pre Grant Publications for class G9B subclass 5.119][List of Patents for class G9B subclass 5.119] 5.119 Subclass 5.119 indent level is 8 [N: where the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide] {G11B 5/39C2C4G}
[List of Pre Grant Publications for class G9B subclass 5.123][List of Patents for class G9B subclass 5.123] 5.123 Subclass 5.123 indent level is 8 [N: disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding] {G11B 5/39C2C4H}
[List of Pre Grant Publications for class G9B subclass 5.128][List of Patents for class G9B subclass 5.128] 5.128 Subclass 5.128 indent level is 8 [N: Heads comprising more than one sensitive element] {G11B 5/39C2C4M}
[List of Pre Grant Publications for class G9B subclass 5.135][List of Patents for class G9B subclass 5.135] 5.135 Subclass 5.135 indent level is 7 [N: composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read (G9B/5.117 takes precedence)] {G11B 5/39C2C6}
[List of Pre Grant Publications for class G9B subclass 5.139][List of Patents for class G9B subclass 5.139] 5.139 Subclass 5.139 indent level is 6 [N: specially shaped] {G11B 5/39C2D}
 [List of Pre Grant Publications for class G9B subclass 5.141][List of Patents for class G9B subclass 5.141] 5.141 Subclass 5.141 indent level is 6 [N: with intrinsic biasing, e.g. provided by equipotential strips] {G11B 5/39C2E}
 [List of Pre Grant Publications for class G9B subclass 5.142][List of Patents for class G9B subclass 5.142] 5.142 Subclass 5.142 indent level is 4 [N: in semi-conductors (G9B/5.114 takes precedence)] {G11B 5/39D}
 [List of Pre Grant Publications for class G9B subclass 5.143][List of Patents for class G9B subclass 5.143] 5.143 Subclass 5.143 indent level is 1 Protective measures on heads, e.g. against excessive temperature (G9B/5.077 takes precedence; protection against wear G9B/5.067) [N: protective structure of the head: see under structures, e.g. G9B/5.079] {G11B 5/40}
 [List of Pre Grant Publications for class G9B subclass 5.144][List of Patents for class G9B subclass 5.144] 5.144 Subclass 5.144 indent level is 1 Cleaning of heads [N: of record carriers G9B/23.096] {G11B 5/41}
 [List of Pre Grant Publications for class G9B subclass 5.145][List of Patents for class G9B subclass 5.145] 5.145 Subclass 5.145 indent level is 1 Arrangements for functional testing of heads [N: (testing of the manufacturing process G9B/5.04)]; Measuring arrangements for heads (measuring electric or magnetic properties G01R; [N: measuring properties for shaping or assembling elements G9B/5.04]) [C9511] {G11B 5/455}
 [List of Pre Grant Publications for class G9B subclass 5.146][List of Patents for class G9B subclass 5.146] 5.146 Subclass 5.146 indent level is 1 Arrangements for demagnetisation of heads (demagnetisation in general H01F13/00) [C9511] {G11B 5/465}
[List of Pre Grant Publications for class G9B subclass 5.147][List of Patents for class G9B subclass 5.147] 5.147 Subclass 5.147 indent level is 1 Disposition or mounting of heads [N: or head supports] relative to record carriers [N: mounting of head within housing G9B/5.035; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed (driving of both record carriers and head G9B/15.021; guiding record carriers G9B/15.076; head selecting circuits G9B/15.016)] {G11B 5/48}
[List of Pre Grant Publications for class G9B subclass 5.148][List of Patents for class G9B subclass 5.148] 5.148 Subclass 5.148 indent level is 2 [N: specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives (G9B/5.156 to G9B/5.181 take precedence)] [N9605] {G11B 5/48A}
[List of Pre Grant Publications for class G9B subclass 5.156][List of Patents for class G9B subclass 5.156] 5.156 Subclass 5.156 indent level is 2 [N: Disposition of heads (G9B/5.159, G9B/5.173 take precedence)] {G11B 5/48D}
[List of Pre Grant Publications for class G9B subclass 5.159][List of Patents for class G9B subclass 5.159] 5.159 Subclass 5.159 indent level is 2 Fixed mounting [N: or arrangements, e.g. one head per track] {G11B 5/49}
 [List of Pre Grant Publications for class G9B subclass 5.172][List of Patents for class G9B subclass 5.172] 5.172 Subclass 5.172 indent level is 2 Interchangeable mountings, e.g. for replacement of head without readjustment {G11B 5/50}
[List of Pre Grant Publications for class G9B subclass 5.173][List of Patents for class G9B subclass 5.173] 5.173 Subclass 5.173 indent level is 2 with simultaneous movement of head and record carrier, e.g. rotation of head (G9B/5.204 takes precedence) {G11B 5/52}
[List of Pre Grant Publications for class G9B subclass 5.181][List of Patents for class G9B subclass 5.181] 5.181 Subclass 5.181 indent level is 2 with provision for moving the head into or out of its operative position or across tracks (G9B/5.202 takes precedence) {G11B 5/54}
[List of Pre Grant Publications for class G9B subclass 5.182][List of Patents for class G9B subclass 5.182] 5.182 Subclass 5.182 indent level is 3 Track change, selection or acquisition by displacement of the head {G11B 5/55}
[List of Pre Grant Publications for class G9B subclass 5.183][List of Patents for class G9B subclass 5.183] 5.183 Subclass 5.183 indent level is 4 [N: across tape tracks] {G11B 5/55B}
[List of Pre Grant Publications for class G9B subclass 5.185][List of Patents for class G9B subclass 5.185] 5.185 Subclass 5.185 indent level is 4 [N: Specially adapted for transducing in both travelling directions of tape] {G11B 5/55C}
[List of Pre Grant Publications for class G9B subclass 5.187][List of Patents for class G9B subclass 5.187] 5.187 Subclass 5.187 indent level is 4 [N: across disc tracks (spiral track following G9B/5.216)] {G11B 5/55D}
[List of Pre Grant Publications for class G9B subclass 5.199][List of Patents for class G9B subclass 5.199] 5.199 Subclass 5.199 indent level is 4 [N: across drum tracks] {G11B 5/55T}
 [List of Pre Grant Publications for class G9B subclass 5.201][List of Patents for class G9B subclass 5.201] 5.201 Subclass 5.201 indent level is 2 with provision for moving the head [N: support] for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering (G9B/5.173, G9B/5.181, G9B/5.202 take precedence) {G11B 5/56}
[List of Pre Grant Publications for class G9B subclass 5.202][List of Patents for class G9B subclass 5.202] 5.202 Subclass 5.202 indent level is 2 with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following [N: spacing means incorporated in the head structure G9B/5.051, G9B/5.067, G9B/5.079] {G11B 5/58}
[List of Pre Grant Publications for class G9B subclass 5.203][List of Patents for class G9B subclass 5.203] 5.203 Subclass 5.203 indent level is 3 for track following on tapes {G11B 5/584}
[List of Pre Grant Publications for class G9B subclass 5.205][List of Patents for class G9B subclass 5.205] 5.205 Subclass 5.205 indent level is 3 [N: maintaining desired contact or spacing by direct interaction of forces generated between heads or supports thereof and record carriers or supports thereof, e.g. attraction-repulsion interactions] {G11B 5/58A}
[List of Pre Grant Publications for class G9B subclass 5.216][List of Patents for class G9B subclass 5.216] 5.216 Subclass 5.216 indent level is 3 for track following on disks [N: (G9B/5.188, G9B/5.193, G9B/5.196, G9B/5.198 take precedence)] {G11B 5/596}
[List of Pre Grant Publications for class G9B subclass 5.229][List of Patents for class G9B subclass 5.229] 5.229 Subclass 5.229 indent level is 3 Fluid-dynamic spacing of heads form record-carriers {G11B 5/60}
[List of Pre Grant Publications for class G9B subclass 5.233][List of Patents for class G9B subclass 5.233] 5.233 Subclass 5.233 indent level is 1 Record carriers characterised by the selection of the material (selection of magnetic materials in general H01F1/00; thin magnetic films H01F10/00) {G11B 5/62}
 [List of Pre Grant Publications for class G9B subclass 5.234][List of Patents for class G9B subclass 5.234] 5.234 Subclass 5.234 indent level is 2 of leaders for magnetic tapes e.g. non-magnetic strips on the tapes or for connection (constructional features G9B/23.086) {G11B 5/627}
 [List of Pre Grant Publications for class G9B subclass 5.235][List of Patents for class G9B subclass 5.235] 5.235 Subclass 5.235 indent level is 2 of cinematographic films or slides with integral magnetic track {G11B 5/633}
[List of Pre Grant Publications for class G9B subclass 5.236][List of Patents for class G9B subclass 5.236] 5.236 Subclass 5.236 indent level is 2 Comprising only the magnetisable material without bonding agent {G11B 5/64}
[List of Pre Grant Publications for class G9B subclass 5.242][List of Patents for class G9B subclass 5.242] 5.242 Subclass 5.242 indent level is 2 comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent {G11B 5/68}
[List of Pre Grant Publications for class G9B subclass 5.243][List of Patents for class G9B subclass 5.243] 5.243 Subclass 5.243 indent level is 3 on a base layer {G11B 5/70}
[List of Pre Grant Publications for class G9B subclass 5.244][List of Patents for class G9B subclass 5.244] 5.244 Subclass 5.244 indent level is 4 characterised by the bonding agent {G11B 5/702}
[List of Pre Grant Publications for class G9B subclass 5.252][List of Patents for class G9B subclass 5.252] 5.252 Subclass 5.252 indent level is 4 characterised by the composition of the magnetic material {G11B 5/706}
[List of Pre Grant Publications for class G9B subclass 5.271][List of Patents for class G9B subclass 5.271] 5.271 Subclass 5.271 indent level is 4 characterised by addition of non-magnetic particles to the layer {G11B 5/708}
 [List of Pre Grant Publications for class G9B subclass 5.273][List of Patents for class G9B subclass 5.273] 5.273 Subclass 5.273 indent level is 4 [N: comprising a magnetic layer on both sides covered with non-magnetic material] {G11B 5/70L}
 [List of Pre Grant Publications for class G9B subclass 5.274][List of Patents for class G9B subclass 5.274] 5.274 Subclass 5.274 indent level is 4 [N: characterised by the dispersing agent] {G11B 5/70M}
 [List of Pre Grant Publications for class G9B subclass 5.275][List of Patents for class G9B subclass 5.275] 5.275 Subclass 5.275 indent level is 4 characterised by the lubricant {G11B 5/71}
 [List of Pre Grant Publications for class G9B subclass 5.276][List of Patents for class G9B subclass 5.276] 5.276 Subclass 5.276 indent level is 4 characterised by the surface treatment or coating of magnetic particles {G11B 5/712}
 [List of Pre Grant Publications for class G9B subclass 5.277][List of Patents for class G9B subclass 5.277] 5.277 Subclass 5.277 indent level is 4 characterised by the dimension of the magnetic particles {G11B 5/714}
[List of Pre Grant Publications for class G9B subclass 5.278][List of Patents for class G9B subclass 5.278] 5.278 Subclass 5.278 indent level is 4 characterised by two or more magnetic layers {G11B 5/716}
[List of Pre Grant Publications for class G9B subclass 5.28][List of Patents for class G9B subclass 5.28] 5.28 Subclass 5.28 indent level is 2 Protective coatings, e.g. antistatic, antifriction {G11B 5/72}
[List of Pre Grant Publications for class G9B subclass 5.283][List of Patents for class G9B subclass 5.283] 5.283 Subclass 5.283 indent level is 2 Base layers [N0503] {G11B 5/73}
[List of Pre Grant Publications for class G9B subclass 5.289][List of Patents for class G9B subclass 5.289] 5.289 Subclass 5.289 indent level is 1 Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum {G11B 5/74}
 [List of Pre Grant Publications for class G9B subclass 5.29][List of Patents for class G9B subclass 5.29] 5.29 Subclass 5.29 indent level is 2 Drum carriers {G11B 5/76}
 [List of Pre Grant Publications for class G9B subclass 5.291][List of Patents for class G9B subclass 5.291] 5.291 Subclass 5.291 indent level is 2 Tape carriers {G11B 5/78}
 [List of Pre Grant Publications for class G9B subclass 5.292][List of Patents for class G9B subclass 5.292] 5.292 Subclass 5.292 indent level is 2 Card carriers {G11B 5/80}
[List of Pre Grant Publications for class G9B subclass 5.293][List of Patents for class G9B subclass 5.293] 5.293 Subclass 5.293 indent level is 2 Disc carriers {G11B 5/82}
[List of Pre Grant Publications for class G9B subclass 5.295][List of Patents for class G9B subclass 5.295] 5.295 Subclass 5.295 indent level is 1 Processes or apparatus specially adapted for manufacturing record carriers (processes involving a single technical art, in general, and for which provision exists elsewhere, see the relevant places, e.g. B29, C23, C25D; apparatus or processes for applying homogeneous magnetic films to substrates in general H01F41/14) {G11B 5/84}
[List of Pre Grant Publications for class G9B subclass 5.296][List of Patents for class G9B subclass 5.296] 5.296 Subclass 5.296 indent level is 2 Coating a support with a liquid magnetic dispersion {G11B 5/842}
 [List of Pre Grant Publications for class G9B subclass 5.298][List of Patents for class G9B subclass 5.298] 5.298 Subclass 5.298 indent level is 2 Coating a support with a magnetic layer by extrusion {G11B 5/848}
 [List of Pre Grant Publications for class G9B subclass 5.299][List of Patents for class G9B subclass 5.299] 5.299 Subclass 5.299 indent level is 2 [N: manufacturing base layers] {G11B 5/84B}
 [List of Pre Grant Publications for class G9B subclass 5.3][List of Patents for class G9B subclass 5.3] 5.3 Subclass 5.3 indent level is 2 [N: protecting the magnetic layer] {G11B 5/84C}
 [List of Pre Grant Publications for class G9B subclass 5.301][List of Patents for class G9B subclass 5.301] 5.301 Subclass 5.301 indent level is 2 [N: treatment by ultrasonics] {G11B 5/84E}
 [List of Pre Grant Publications for class G9B subclass 5.302][List of Patents for class G9B subclass 5.302] 5.302 Subclass 5.302 indent level is 2 [N: coating a support with a magnetic layer by precipitation] {G11B 5/84H}
 [List of Pre Grant Publications for class G9B subclass 5.303][List of Patents for class G9B subclass 5.303] 5.303 Subclass 5.303 indent level is 2 Coating a support with a magnetic layer by vapour deposition {G11B 5/85}
 [List of Pre Grant Publications for class G9B subclass 5.304][List of Patents for class G9B subclass 5.304] 5.304 Subclass 5.304 indent level is 2 Coating a support with a magnetic layer by sputtering [N0503] {G11B 5/851}
 [List of Pre Grant Publications for class G9B subclass 5.305][List of Patents for class G9B subclass 5.305] 5.305 Subclass 5.305 indent level is 2 Orientation in a magnetic field (G9B/5.297 takes precedence) {G11B 5/852}
 [List of Pre Grant Publications for class G9B subclass 5.306][List of Patents for class G9B subclass 5.306] 5.306 Subclass 5.306 indent level is 2 Coating only part of a support with a magnetic layer {G11B 5/855}
 [List of Pre Grant Publications for class G9B subclass 5.307][List of Patents for class G9B subclass 5.307] 5.307 Subclass 5.307 indent level is 2 Producing a magnetic layer by electro-plating or electroless plating {G11B 5/858}
[List of Pre Grant Publications for class G9B subclass 5.308][List of Patents for class G9B subclass 5.308] 5.308 Subclass 5.308 indent level is 1 Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers [N: (by varying the order of the information G9B/27.009, G9B/27.013)] {G11B 5/86}
 [List of Pre Grant Publications for class G9B subclass 5.309][List of Patents for class G9B subclass 5.309] 5.309 Subclass 5.309 indent level is 2 [N: by contact "printing"] {G11B 5/86B}
[List of Pre Grant Publications for class G9B subclass 7][List of Patents for class G9B subclass 7] 7 RECORDING OR REPRODUCING BY OPTICAL MEANS, E.G. RECORDING USING A THERMAL BEAM OF OPTICAL RADIATION [N: BY MODIFYING OPTICAL PROPERTIES OR THE PHYSICAL STRUCTURE], REPRODUCING USING AN OPTICAL BEAM AT LOWER POWER [N: BY SENSING OPTICAL PROPERTIES]; RECORD CARRIERS THEREFOR; (G9B/11, G9B/13 TAKE PRECEDENCE) [C0406] {G11B 7/00}
[List of Pre Grant Publications for class G9B subclass 7.001][List of Patents for class G9B subclass 7.001] 7.001 Subclass 7.001 indent level is 1 Recording, reproducing or erasing systems characterised by the shape [N: or form] of the carrier [N0406] {G11B 7/002}
 [List of Pre Grant Publications for class G9B subclass 7.002][List of Patents for class G9B subclass 7.002] 7.002 Subclass 7.002 indent level is 2 with cylinders or cylinder-like carriers [N: or cylindrical sections or flat carriers loaded onto a cylindrical surface], e.g. truncated cones [N0406] {G11B 7/0025}
 [List of Pre Grant Publications for class G9B subclass 7.003][List of Patents for class G9B subclass 7.003] 7.003 Subclass 7.003 indent level is 2 with webs [N: , filaments or wires], e.g. belts, spooled tapes or films of quasi-infinite extent [N0406] {G11B 7/003}
 [List of Pre Grant Publications for class G9B subclass 7.004][List of Patents for class G9B subclass 7.004] 7.004 Subclass 7.004 indent level is 2 with cards [N: or other card-like flat carriers, e.g. flat sheets of optical film] [N0406] {G11B 7/0033}
[List of Pre Grant Publications for class G9B subclass 7.005][List of Patents for class G9B subclass 7.005] 7.005 Subclass 7.005 indent level is 2 with discs [N0406] {G11B 7/0037}
[List of Pre Grant Publications for class G9B subclass 7.009][List of Patents for class G9B subclass 7.009] 7.009 Subclass 7.009 indent level is 1 Recording, reproducing or erasing methods; Read, write or erase circuits therefor [N: (magneto-optical systems G9B/11.009)] [N0406] {G11B 7/004}
[List of Pre Grant Publications for class G9B subclass 7.01][List of Patents for class G9B subclass 7.01] 7.01 Subclass 7.01 indent level is 2 Recording (G9B/7.026. G9B/7.027 take precedence) [N0406] {G11B 7/0045}
 [List of Pre Grant Publications for class G9B subclass 7.018][List of Patents for class G9B subclass 7.018] 7.018 Subclass 7.018 indent level is 2 Reproducing (G9B/7.027 takes precedence) [N0406] {G11B 7/005}
[List of Pre Grant Publications for class G9B subclass 7.019][List of Patents for class G9B subclass 7.019] 7.019 Subclass 7.019 indent level is 2 Erasing (G9B/7.026, G9B/7.027 take precedence) [N0406] {G11B 7/0055}
 [List of Pre Grant Publications for class G9B subclass 7.026][List of Patents for class G9B subclass 7.026] 7.026 Subclass 7.026 indent level is 2 Overwriting (G9B/7.027 takes precedence) [N0406] {G11B 7/006}
[List of Pre Grant Publications for class G9B subclass 7.027][List of Patents for class G9B subclass 7.027] 7.027 Subclass 7.027 indent level is 2 Recording, reproducing or erasing by using optical interference patterns, e.g. holograms [N0406] {G11B 7/0065}
[List of Pre Grant Publications for class G9B subclass 7.029][List of Patents for class G9B subclass 7.029] 7.029 Subclass 7.029 indent level is 1 Arrangement of the information on the record carrier, e.g. form of tracks [N: actual track shape, (e.g. wobbled) or cross-section, (e.g. v-shaped); sequential information structures, (e.g. sectoring or header formats within a track] {G11B 7/007}
 [List of Pre Grant Publications for class G9B subclass 7.03][List of Patents for class G9B subclass 7.03] 7.03 Subclass 7.03 indent level is 2 [N: Dimensions of grooves or tracks, e.g. groove depth, track pitch] [N0408] {G11B 7/007D}
 [List of Pre Grant Publications for class G9B subclass 7.031][List of Patents for class G9B subclass 7.031] 7.031 Subclass 7.031 indent level is 2 [N: Groove and land recording, i.e. user data recorded both in the grooves and on the lands] [N0408] {G11B 7/007G}
 [List of Pre Grant Publications for class G9B subclass 7.032][List of Patents for class G9B subclass 7.032] 7.032 Subclass 7.032 indent level is 2 [N: where the information is modified to form a visible pattern, e.g. forming a label by modifying the width of pits or grooves] [N0408] {G11B 7/007L}
 [List of Pre Grant Publications for class G9B subclass 7.033][List of Patents for class G9B subclass 7.033] 7.033 Subclass 7.033 indent level is 2 [N: Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area (PCA), Burst Cutting Area (BCA), control information (sector headers or adresses in prepits G9B/7.034; address data in track wobble G9B/7.035)] [N0408] {G11B 7/007R}
 [List of Pre Grant Publications for class G9B subclass 7.034][List of Patents for class G9B subclass 7.034] 7.034 Subclass 7.034 indent level is 2 [N: Sectoring or header formats within a track (formats in general G9B/20.015)] {G11B 7/007S}
 [List of Pre Grant Publications for class G9B subclass 7.035][List of Patents for class G9B subclass 7.035] 7.035 Subclass 7.035 indent level is 2 [N: Track shape, e.g. address or synchronisation information in wobbled track or sidewall (addressing or synchronisation in general G9B/27)] [N0408] {G11B 7/007T}
 [List of Pre Grant Publications for class G9B subclass 7.036][List of Patents for class G9B subclass 7.036] 7.036 Subclass 7.036 indent level is 2 [N: Track cross-section, e.g. V-shaped, trapezoidal] [N0408] {G11B 7/007V}
 [List of Pre Grant Publications for class G9B subclass 7.037][List of Patents for class G9B subclass 7.037] 7.037 Subclass 7.037 indent level is 2 [N: Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity (ZCLV), Zone Constant Angular Velocity (ZCAV), carriers with RAM and ROM areas] [N0408] {G11B 7/007Z}
[List of Pre Grant Publications for class G9B subclass 7.038][List of Patents for class G9B subclass 7.038] 7.038 Subclass 7.038 indent level is 2 for discrete information, i.e. where each information unit is stored at a distinct discrete location [N: e.g. digital information formats within a data block or sector] {G11B 7/013}
[List of Pre Grant Publications for class G9B subclass 7.041][List of Patents for class G9B subclass 7.041] 7.041 Subclass 7.041 indent level is 1 Disposition or mounting of heads or light sources relatively to record carriers {G11B 7/08}
[List of Pre Grant Publications for class G9B subclass 7.042][List of Patents for class G9B subclass 7.042] 7.042 Subclass 7.042 indent level is 2 with provision for moving the light beam into, or out of, its operative position [N: or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection] (modulating by information signals G9B/7.097; controlling the position or direction of light beams, i.e. deflection, G02F1/29) {G11B 7/085}
 [List of Pre Grant Publications for class G9B subclass 7.059][List of Patents for class G9B subclass 7.059] 7.059 Subclass 7.059 indent level is 2 [N: for time base error correction by moving the light beam] {G11B 7/08A}
 [List of Pre Grant Publications for class G9B subclass 7.06][List of Patents for class G9B subclass 7.06] 7.06 Subclass 7.06 indent level is 2 [N: Details of mobile parts, e.g. electromechanical control devices (see WARNING 4 after subclass title)] {G11B 7/08D}
 [List of Pre Grant Publications for class G9B subclass 7.061][List of Patents for class G9B subclass 7.061] 7.061 Subclass 7.061 indent level is 2 [N: Aligning the head or the light source relative to the record carrier otherwise than during transducing, e.g. adjusting tilt set screw during assembly of head] [N0408] {G11B 7/08T}
[List of Pre Grant Publications for class G9B subclass 7.062][List of Patents for class G9B subclass 7.062] 7.062 Subclass 7.062 indent level is 2 with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following [N: see {G11B 7/09}
[List of Pre Grant Publications for class G9B subclass 7.063][List of Patents for class G9B subclass 7.063] 7.063 Subclass 7.063 indent level is 3 specially adapted for discs, e.g. for compensation of eccentricity or wobble {G11B 7/095}
[List of Pre Grant Publications for class G9B subclass 7.066][List of Patents for class G9B subclass 7.066] 7.066 Subclass 7.066 indent level is 3 [N: for track following only(G9B/7.079,G9B/7.089,G9B/7.091,G9B/7.092,G9B/7.093,G9B/7.094, G9B/7.095 take precedence)] {G11B 7/09A}
[List of Pre Grant Publications for class G9B subclass 7.07][List of Patents for class G9B subclass 7.07] 7.07 Subclass 7.07 indent level is 3 [N: for focusing only (G9B/7.079, G9B/7.089, G9B/7.091, G9B/7.092, G9B/7.093, G9B/7.094, G9B/7.095 take precedence)] {G11B 7/09B}
[List of Pre Grant Publications for class G9B subclass 7.077][List of Patents for class G9B subclass 7.077] 7.077 Subclass 7.077 indent level is 3 [N: Servo circuits using a special characteristic or response (see {G11B 7/09C}
[List of Pre Grant Publications for class G9B subclass 7.079][List of Patents for class G9B subclass 7.079] 7.079 Subclass 7.079 indent level is 3 [N: Electromechanical actuators for lens positioning (G9B/7.054 takes precedence)] {G11B 7/09D}
 [List of Pre Grant Publications for class G9B subclass 7.087][List of Patents for class G9B subclass 7.087] 7.087 Subclass 7.087 indent level is 3 [N: optical elements specially used for improving or allowing a desired servo operation (G9B/7.09 takes precedence; see WARNING 4 after subclass title] {G11B 7/09E}
 [List of Pre Grant Publications for class G9B subclass 7.088][List of Patents for class G9B subclass 7.088] 7.088 Subclass 7.088 indent level is 3 [N: servo format, e.g. guide tracks, pilot signals] {G11B 7/09F}
 [List of Pre Grant Publications for class G9B subclass 7.089][List of Patents for class G9B subclass 7.089] 7.089 Subclass 7.089 indent level is 3 [N: Methods and circuits for servo offset compensation] {G11B 7/09G}
 [List of Pre Grant Publications for class G9B subclass 7.09][List of Patents for class G9B subclass 7.09] 7.09 Subclass 7.09 indent level is 3 [N: Disposition of servo head, e.g. servo beam, servo detector (see {G11B 7/09H}
 [List of Pre Grant Publications for class G9B subclass 7.091][List of Patents for class G9B subclass 7.091] 7.091 Subclass 7.091 indent level is 3 [N: Methods and circuits for servo gain or phase compensation during operation (for initialising servos G9B/7.093)] {G11B 7/09K}
 [List of Pre Grant Publications for class G9B subclass 7.092][List of Patents for class G9B subclass 7.092] 7.092 Subclass 7.092 indent level is 3 [N: Methods and circuits for performing mathematical operations on individual detector segment outputs] {G11B 7/09L}
 [List of Pre Grant Publications for class G9B subclass 7.093][List of Patents for class G9B subclass 7.093] 7.093 Subclass 7.093 indent level is 3 [N: Methods for initialising servos, start-up sequences] {G11B 7/09M}
 [List of Pre Grant Publications for class G9B subclass 7.094][List of Patents for class G9B subclass 7.094] 7.094 Subclass 7.094 indent level is 3 [N: specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration] {G11B 7/09P}
 [List of Pre Grant Publications for class G9B subclass 7.095][List of Patents for class G9B subclass 7.095] 7.095 Subclass 7.095 indent level is 3 [N: specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts (G9B/7.063 takes precedence)] {G11B 7/09Q}
 [List of Pre Grant Publications for class G9B subclass 7.096][List of Patents for class G9B subclass 7.096] 7.096 Subclass 7.096 indent level is 2 Interchangeable mountings, e.g. for replacement of head without readjustment [N: including interchangeable electrical adjuster boards] {G11B 7/10}
[List of Pre Grant Publications for class G9B subclass 7.097][List of Patents for class G9B subclass 7.097] 7.097 Subclass 7.097 indent level is 1 Heads, [N: e.g. forming of spot, modulation therefor (modulating lasers H01S3/10; controlling the intensity, colour, phase, polarisation or direction of light beams arriving from an independent light source, e.g. switching gating or modulating G02F1/00; disposition or mounting of head elements within housing or with provision for moving of light source, optical beam or detector, irrelevant to the transducing method G9B/7.041)] {G11B 7/12}
[List of Pre Grant Publications for class G9B subclass 7.098][List of Patents for class G9B subclass 7.098] 7.098 Subclass 7.098 indent level is 2 Optical beam sources therefor (light-emitting diodes H01L33/00; semiconductor lasers H01S5/00); Modulators, e.g. means for controlling the size or intensity of the optical spot or of the optical trace (electro-, magneto-, or acousto-optical modulators G02F1/00; optical diaphragm G03B9/02), [N: e.g. laser control circuitry specially adapted for optical storage devices] {G11B 7/125}
 [List of Pre Grant Publications for class G9B subclass 7.106][List of Patents for class G9B subclass 7.106] 7.106 Subclass 7.106 indent level is 2 [N: Protecting the head, e.g. against dust or impact with the record carrier] [N9706] [C0408] {G11B 7/12C}
 [List of Pre Grant Publications for class G9B subclass 7.107][List of Patents for class G9B subclass 7.107] 7.107 Subclass 7.107 indent level is 2 [N: Flying-type heads, e.g. analogous to Winchester type in magnetic recording] {G11B 7/12F}
[List of Pre Grant Publications for class G9B subclass 7.108][List of Patents for class G9B subclass 7.108] 7.108 Subclass 7.108 indent level is 2 [N: Integrated head arrangements, e.g. source and detectors mounted on the same substrate] {G11B 7/12H}
 [List of Pre Grant Publications for class G9B subclass 7.111][List of Patents for class G9B subclass 7.111] 7.111 Subclass 7.111 indent level is 2 Optical detectors therefor (optical detectors per se G01J; demodulating light, transferring the modulation of modulated light, frequency changing of light G02F2/00) [N: Disposition of photodetectors] {G11B 7/13}
[List of Pre Grant Publications for class G9B subclass 7.112][List of Patents for class G9B subclass 7.112] 7.112 Subclass 7.112 indent level is 2 Means for guiding the beam from the source to the record carrier or from record carrier to the detector [C0408] {G11B 7/135}
 [List of Pre Grant Publications for class G9B subclass 7.113][List of Patents for class G9B subclass 7.113] 7.113 Subclass 7.113 indent level is 3 [N: using diffraction optics, e.g. holograms or gratings (diffraction gratings per se G02B5/18; holograms per se G02B5/32; grating systems G01B27/44)] [C0408] {G11B 7/135A}
 [List of Pre Grant Publications for class G9B subclass 7.114][List of Patents for class G9B subclass 7.114] 7.114 Subclass 7.114 indent level is 3 [N: where the characterising optical element is a double or multiple prism beam splitter, i.e. having at least 2 prisms in cooperation] {G11B 7/135B}
 [List of Pre Grant Publications for class G9B subclass 7.115][List of Patents for class G9B subclass 7.115] 7.115 Subclass 7.115 indent level is 3 [N: where the characterising optical element is a single prism element] {G11B 7/135C}
 [List of Pre Grant Publications for class G9B subclass 7.116][List of Patents for class G9B subclass 7.116] 7.116 Subclass 7.116 indent level is 3 [N: where the characterising optical element is a mirror (galvanomirrors G9B/7.053)] {G11B 7/135D}
[List of Pre Grant Publications for class G9B subclass 7.117][List of Patents for class G9B subclass 7.117] 7.117 Subclass 7.117 indent level is 3 [N: where the characterising optical element is a refractive plate, e.g. wave plate] [C0408] {G11B 7/135E}
[List of Pre Grant Publications for class G9B subclass 7.12][List of Patents for class G9B subclass 7.12] 7.12 Subclass 7.12 indent level is 3 [N: where the characterising optical element is a lens] {G11B 7/135F}
 [List of Pre Grant Publications for class G9B subclass 7.124][List of Patents for class G9B subclass 7.124] 7.124 Subclass 7.124 indent level is 3 [N: Non-lens elements for altering the properties of the beam as it falls on the detector, e.g. knife edges, slits, filters, stops] {G11B 7/135G}
 [List of Pre Grant Publications for class G9B subclass 7.125][List of Patents for class G9B subclass 7.125] 7.125 Subclass 7.125 indent level is 3 [N: using fibre optics] {G11B 7/135L}
 [List of Pre Grant Publications for class G9B subclass 7.126][List of Patents for class G9B subclass 7.126] 7.126 Subclass 7.126 indent level is 3 [N: using the near-field effect (near-field optical probes per se G12B21/06)] [N0408] {G11B 7/135M}
 [List of Pre Grant Publications for class G9B subclass 7.127][List of Patents for class G9B subclass 7.127] 7.127 Subclass 7.127 indent level is 3 [N: Numerical aperture control means] [N0408] {G11B 7/135N}
[List of Pre Grant Publications for class G9B subclass 7.128][List of Patents for class G9B subclass 7.128] 7.128 Subclass 7.128 indent level is 3 [N: Means for controlling the beam wavefront, e.g. aberration correction (optical systems for aberration correction per se G02B27/00)] [N0408] {G11B 7/135P}
 [List of Pre Grant Publications for class G9B subclass 7.132][List of Patents for class G9B subclass 7.132] 7.132 Subclass 7.132 indent level is 3 [N: where the characterising optical element is a beam splitter or combiner (G9B/7.113, G9B/7.114 take precedence; beam splitting or combining per se G02B27/10)] [N0408] {G11B 7/135S}
 [List of Pre Grant Publications for class G9B subclass 7.133][List of Patents for class G9B subclass 7.133] 7.133 Subclass 7.133 indent level is 3 [N: Means for changing the cross-sectional shape, e.g. circular or elliptical, of the beam] [N0408] {G11B 7/135T}
 [List of Pre Grant Publications for class G9B subclass 7.134][List of Patents for class G9B subclass 7.134] 7.134 Subclass 7.134 indent level is 3 [N: characterised by the arrangement of detectors in a multiple array] {G11B 7/13A}
 [List of Pre Grant Publications for class G9B subclass 7.135][List of Patents for class G9B subclass 7.135] 7.135 Subclass 7.135 indent level is 3 [N: characterised by the shape of individual detector elements] {G11B 7/13B}
 [List of Pre Grant Publications for class G9B subclass 7.136][List of Patents for class G9B subclass 7.136] 7.136 Subclass 7.136 indent level is 2 adapted to record on, or to reproduce from, more than one track simultaneously (G9B/7.137 takes precedence) {G11B 7/14}
 [List of Pre Grant Publications for class G9B subclass 7.137][List of Patents for class G9B subclass 7.137] 7.137 Subclass 7.137 indent level is 2 Dual-recording arrangements, i.e. in which the information is recorded in two different forms simultaneously on the same or related tracks, e.g. recording instantaneous and mean values (sound recording combined with cinematography G03C) {G11B 7/20}
 [List of Pre Grant Publications for class G9B subclass 7.138][List of Patents for class G9B subclass 7.138] 7.138 Subclass 7.138 indent level is 2 Apparatus or processes specially adapted for the manufacture of heads, e.g. assembly {G11B 7/22}
[List of Pre Grant Publications for class G9B subclass 7.139][List of Patents for class G9B subclass 7.139] 7.139 Subclass 7.139 indent level is 1 Record carriers characterised by the selection of the material or by the structure or form (characterised by the arrangement of information on the carrier G9B/7.029 [N: G9B/7.039]; photosensitive materials per se G03C) {G11B 7/24}
[List of Pre Grant Publications for class G9B subclass 7.14][List of Patents for class G9B subclass 7.14] 7.14 Subclass 7.14 indent level is 2 characterised by the selection of the material [N0505] {G11B 7/241}
 [List of Pre Grant Publications for class G9B subclass 7.159][List of Patents for class G9B subclass 7.159] 7.159 Subclass 7.159 indent level is 2 [N: Conditioning of record carrier e.g. mechanised protection or means for reducing influence of physical parameters e.g. temperature large, moisture (for record carriers not specific to the method of recording or reproducing G9B/23; by using layers integrated with the recording layer G9B/7.181)] {G11B 7/24C}
[List of Pre Grant Publications for class G9B subclass 7.16][List of Patents for class G9B subclass 7.16] 7.16 Subclass 7.16 indent level is 2 [N: characterised by the form of the carrier] [N0408] {G11B 7/24F}
 [List of Pre Grant Publications for class G9B subclass 7.165][List of Patents for class G9B subclass 7.165] 7.165 Subclass 7.165 indent level is 2 [N: Structures specially adapted for reproducing (G9B/7.159 takes precedence)] {G11B 7/24R}
[List of Pre Grant Publications for class G9B subclass 7.166][List of Patents for class G9B subclass 7.166] 7.166 Subclass 7.166 indent level is 2 [N: characterised by the structure, e.g. involving layers] [N0408] {G11B 7/24S}
 [List of Pre Grant Publications for class G9B subclass 7.167][List of Patents for class G9B subclass 7.167] 7.167 Subclass 7.167 indent level is 3 [N: Two-sided carriers, in which the layers are read from opposite sides] [N0408] {G11B 7/24S2}
[List of Pre Grant Publications for class G9B subclass 7.168][List of Patents for class G9B subclass 7.168] 7.168 Subclass 7.168 indent level is 3 [N: Multiple data layers, in which the layers are read from the same side] [N0408] {G11B 7/24S4}
[List of Pre Grant Publications for class G9B subclass 7.171][List of Patents for class G9B subclass 7.171] 7.171 Subclass 7.171 indent level is 3 of layers other than recording layers [N0505] {G11B 7/252}
[List of Pre Grant Publications for class G9B subclass 7.194][List of Patents for class G9B subclass 7.194] 7.194 Subclass 7.194 indent level is 2 Apparatus or processes specially adapted for the manufacture of record carriers (processes involving a single technical art and for which provision exists elsewhere, see the relevant class, e.g. B29, G03) [N: manufacture of intermediate mediums, e.g. matrixes for processing G9B/23.008] {G11B 7/26}
 [List of Pre Grant Publications for class G9B subclass 7.2][List of Patents for class G9B subclass 7.2] 7.2 Subclass 7.2 indent level is 1 Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers {G11B 7/28}
[List of Pre Grant Publications for class G9B subclass 9][List of Patents for class G9B subclass 9] 9 RECORDING OR REPRODUCING USING A METHOD NOT COVERED BY ONE OF THE MAIN GROUPS G9B/3 TO G9B/7; RECORD CARRIERS THEREFOR (G9B/11 TAKES PRECEDENCE) [N: DRIVING OR MOVING OF HEADS G9B/21.003] {G11B 9/00}
[List of Pre Grant Publications for class G9B subclass 9.001][List of Patents for class G9B subclass 9.001] 9.001 Subclass 9.001 indent level is 1 [N: Recording by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling (STM) or Atomic Force Microscopy (AFM) for inducing physical or electrical perturbations in a recording medium, the permanent effect of which being the writing of at least one information unit of a sequence disposed along a track; Reproducing such memorised information by such association of tip and means; Record carriers or media specially adapted for such transducing of information (marking using electrical current B41M5/20; investigating materials by using tunnel effect G01N27/00F; measuring irregularity of surfaces by using scanning force microscopes G01B7/34A)] {G11B 9/00A}
 [List of Pre Grant Publications for class G9B subclass 9.002][List of Patents for class G9B subclass 9.002] 9.002 Subclass 9.002 indent level is 2 [N: Heads] {G11B 9/00A2}
[List of Pre Grant Publications for class G9B subclass 9.003][List of Patents for class G9B subclass 9.003] 9.003 Subclass 9.003 indent level is 2 [N: Disposition or mounting of heads or record carriers (G9B/17 and G9B/19 take precedence)] {G11B 9/00A3}
[List of Pre Grant Publications for class G9B subclass 9.008][List of Patents for class G9B subclass 9.008] 9.008 Subclass 9.008 indent level is 2 [N: Record carriers] {G11B 9/00A4}
 [List of Pre Grant Publications for class G9B subclass 9.012][List of Patents for class G9B subclass 9.012] 9.012 Subclass 9.012 indent level is 1 using ferroelectric record carriers; Record carriers therefor {G11B 9/02}
 [List of Pre Grant Publications for class G9B subclass 9.013][List of Patents for class G9B subclass 9.013] 9.013 Subclass 9.013 indent level is 1 using record carriers having variable electric resistance; Record carriers therefor {G11B 9/04}
[List of Pre Grant Publications for class G9B subclass 9.014][List of Patents for class G9B subclass 9.014] 9.014 Subclass 9.014 indent level is 1 using record carriers having variable electrical capacitance; Record carriers therefor (G9B/9.012 takes precedence) {G11B 9/06}
[List of Pre Grant Publications for class G9B subclass 9.015][List of Patents for class G9B subclass 9.015] 9.015 Subclass 9.015 indent level is 2 [N: Record carriers characterised by their structure or form or by the selection of the material; Apparatus or processes specially adapted for the manufacture of record carriers (processes involving a single technical art and for which provision exists elsewhere, see the relevant class, e.g. B05D, F16N, C08L)] {G11B 9/06R}
[List of Pre Grant Publications for class G9B subclass 9.022][List of Patents for class G9B subclass 9.022] 9.022 Subclass 9.022 indent level is 2 Heads for reproducing capacitive information {G11B 9/07}
 [List of Pre Grant Publications for class G9B subclass 9.024][List of Patents for class G9B subclass 9.024] 9.024 Subclass 9.024 indent level is 1 using electrostatic charge injection; Record carriers therefor {G11B 9/08}
 [List of Pre Grant Publications for class G9B subclass 9.025][List of Patents for class G9B subclass 9.025] 9.025 Subclass 9.025 indent level is 1 using electron beam; Record carriers therefor (G9B/9.024 takes precedence) [N: see provisional also G9B/11.004] {G11B 9/10}
[List of Pre Grant Publications for class G9B subclass 11][List of Patents for class G9B subclass 11] 11 RECORDING ON OR REPRODUCING FROM THE SAME RECORD CARRIER WHEREIN FOR THESE TWO OPERATIONS THE METHODS ARE COVERED BY DIFFERENT MAIN GROUPS OF GROUPS G9B/3 TO G9B/7 OR BY DIFFERENT SUBGROUPS OF GROUP G9B/9; RECORD CARRIERS THEREFOR [N: DRIVING OR MOVING OF HEADS G9B/3.008, G9B/5.147, G9B/7.041, G9B/21.003] {G11B 11/00}
[List of Pre Grant Publications for class G9B subclass 11.001][List of Patents for class G9B subclass 11.001] 11.001 Subclass 11.001 indent level is 1 [N: using recording by perturbation of the physical or electrical structure] {G11B 11/00A}
 [List of Pre Grant Publications for class G9B subclass 11.002][List of Patents for class G9B subclass 11.002] 11.002 Subclass 11.002 indent level is 2 [N: with reproducing by using non-optical beam of radiation or particles, e.g. electrons, directly interacting with the memorised information (G9B/11.003 takes precedence)] {G11B 11/00A2}
 [List of Pre Grant Publications for class G9B subclass 11.003][List of Patents for class G9B subclass 11.003] 11.003 Subclass 11.003 indent level is 2 [N: with reproducing by means directly associated with the tip of a microscopic electrical probe as defined in G9B/9.001 (details of heads or their disposition or mounting G9B/9.002 and G9B/9.003)] {G11B 11/00A4}
[List of Pre Grant Publications for class G9B subclass 11.004][List of Patents for class G9B subclass 11.004] 11.004 Subclass 11.004 indent level is 1 using recording by deforming with non-mechanical means, e.g. laser, beam of particles [N: (G9B/11.001 takes precedence; see proviosional also G9B/3.099 to G9B/3.107)] {G11B 11/03}
 [List of Pre Grant Publications for class G9B subclass 11.005][List of Patents for class G9B subclass 11.005] 11.005 Subclass 11.005 indent level is 2 with reproducing by capacitive means [N: G9B/9.022 takes precedence] {G11B 11/05}
 [List of Pre Grant Publications for class G9B subclass 11.006][List of Patents for class G9B subclass 11.006] 11.006 Subclass 11.006 indent level is 2 with reproducing by mechanical sensing {G11B 11/06}
 [List of Pre Grant Publications for class G9B subclass 11.007][List of Patents for class G9B subclass 11.007] 11.007 Subclass 11.007 indent level is 1 using recording by electric charge or by variation of electric resistance or capacitance [N: (G9B/11.001, G9B/11.008 take precedence)] {G11B 11/08}
[List of Pre Grant Publications for class G9B subclass 11.008][List of Patents for class G9B subclass 11.008] 11.008 Subclass 11.008 indent level is 1 using recording by magnetic means [N: or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field] {G11B 11/10}
[List of Pre Grant Publications for class G9B subclass 11.009][List of Patents for class G9B subclass 11.009] 11.009 Subclass 11.009 indent level is 2 using a beam of light or a magnetic field for recording [N: by change of magnetisation] and a beam of light for reproducing, e.g. light-induced thermo-magnetic recording, Kerr effect reproducing [N: spin magnetisation recording] [N0002] {G11B 11/105}
[List of Pre Grant Publications for class G9B subclass 11.01][List of Patents for class G9B subclass 11.01] 11.01 Subclass 11.01 indent level is 3 [N: characterised by the transducing operation to be executed] [N0002] {G11B 11/105B}
[List of Pre Grant Publications for class G9B subclass 11.024][List of Patents for class G9B subclass 11.024] 11.024 Subclass 11.024 indent level is 3 [N: Heads] [N0002] {G11B 11/105D}
[List of Pre Grant Publications for class G9B subclass 11.032][List of Patents for class G9B subclass 11.032] 11.032 Subclass 11.032 indent level is 3 [N: Disposition or mounting of transducers relative to record carriers] [N0002] {G11B 11/105G}
[List of Pre Grant Publications for class G9B subclass 11.047][List of Patents for class G9B subclass 11.047] 11.047 Subclass 11.047 indent level is 3 [N: Record carriers characterised by the selection of the material or by the structure or form] [N0002] {G11B 11/105M}
[List of Pre Grant Publications for class G9B subclass 11.053][List of Patents for class G9B subclass 11.053] 11.053 Subclass 11.053 indent level is 3 [N: Control of operating function] [N0002] {G11B 11/105P}
 [List of Pre Grant Publications for class G9B subclass 11.055][List of Patents for class G9B subclass 11.055] 11.055 Subclass 11.055 indent level is 2 using a beam, [N: e.g. of electrons or X-rays] other than a beam of light [N: or a magnetic field] for recording [N0002] {G11B 11/11}
 [List of Pre Grant Publications for class G9B subclass 11.056][List of Patents for class G9B subclass 11.056] 11.056 Subclass 11.056 indent level is 2 [N: using a beam, [N: e.g. of electrons or X-rays] other than a beam of light for reproducing [N0002] {G11B 11/115}
[List of Pre Grant Publications for class G9B subclass 11.057][List of Patents for class G9B subclass 11.057] 11.057 Subclass 11.057 indent level is 1 using recording by optical means (G9B/11.004 takes precedence) [N: G9B/11.008 takes precedence] {G11B 11/12}
 [List of Pre Grant Publications for class G9B subclass 11.058][List of Patents for class G9B subclass 11.058] 11.058 Subclass 11.058 indent level is 2 with reproducing by magnetic means {G11B 11/14}
[List of Pre Grant Publications for class G9B subclass 11.059][List of Patents for class G9B subclass 11.059] 11.059 Subclass 11.059 indent level is 1 using recording by mechanical cutting, deforming or pressing [N: (G9B/11.001 takes precedence)] {G11B 11/16}
 [List of Pre Grant Publications for class G9B subclass 11.06][List of Patents for class G9B subclass 11.06] 11.06 Subclass 11.06 indent level is 2 with reproducing by optical means {G11B 11/18}
 [List of Pre Grant Publications for class G9B subclass 11.061][List of Patents for class G9B subclass 11.061] 11.061 Subclass 11.061 indent level is 2 with reproducing by magnetic means {G11B 11/20}
 [List of Pre Grant Publications for class G9B subclass 11.062][List of Patents for class G9B subclass 11.062] 11.062 Subclass 11.062 indent level is 2 with reproducing by capacitive means [N: see provisionally G9B/9.014, G9B/9.022; G9B/11.005] {G11B 11/22}
[List of Pre Grant Publications for class G9B subclass 13][List of Patents for class G9B subclass 13] 13 RECORDING SIMULTANEOUSLY [N: OR SELECTIVELY] BY METHODS COVERED BY DIFFERENT MAIN GROUPS [N: AMONG G9B/3, G9B/5, G9B/7 AND G9B/9]; RECORD CARRIERS THEREFOR [N: NOT OTHERWISE PROVIDED FOR]; REPRODUCING THEREFROM [N: NOT OTHERWISE PROVIDED FOR (G9B/9.001 AND G9B/11.001 TAKE PRECEDENCE; DRIVING OR MOVING OF HEADS G9B/3.008, G9B/5.147, G9B/7.041 AND G9B/21.003)] {G11B 13/00}
 [List of Pre Grant Publications for class G9B subclass 13.001][List of Patents for class G9B subclass 13.001] 13.001 Subclass 13.001 indent level is 1 magnetically and by styli {G11B 13/02}
[List of Pre Grant Publications for class G9B subclass 13.002][List of Patents for class G9B subclass 13.002] 13.002 Subclass 13.002 indent level is 1 magnetically [N: or by magnetisation] and optically [N: or by radiation, for changing or sensing optical properties] {G11B 13/04}
 [List of Pre Grant Publications for class G9B subclass 13.003][List of Patents for class G9B subclass 13.003] 13.003 Subclass 13.003 indent level is 2 [N: combined recording by magnetic and optic means] {G11B 13/04C}
 [List of Pre Grant Publications for class G9B subclass 13.004][List of Patents for class G9B subclass 13.004] 13.004 Subclass 13.004 indent level is 1 optically and by styli {G11B 13/06}
[List of Pre Grant Publications for class G9B subclass 15][List of Patents for class G9B subclass 15] 15 DRIVING, STARTING OR STOPPING RECORD CARRIERS OF FILAMENTARY OR WEB FORM; DRIVING BOTH SUCH RECORD CARRIERS AND HEADS; GUIDING SUCH RECORD CARRIERS OR CONTAINERS THEREFOR; CONTROL THEREOF; CONTROL OF OPERATING FUNCTION (DRIVING OR GUIDING HEADS G9B/3 TO G9B/7, G9B/21) {G11B 15/00}
 [List of Pre Grant Publications for class G9B subclass 15.001][List of Patents for class G9B subclass 15.001] 15.001 Subclass 15.001 indent level is 1 [N: Programmed access in sequence to indexed parts of tracks of operating tapes, by driving or guiding the tape (access by driving of both record carrier and head G9B/15.023; see prov. also G9B/15.077)] {G11B 15/00A}
[List of Pre Grant Publications for class G9B subclass 15.002][List of Patents for class G9B subclass 15.002] 15.002 Subclass 15.002 indent level is 1 Control of operating function, e.g. switching from recording to reproducing {G11B 15/02}
 [List of Pre Grant Publications for class G9B subclass 15.003][List of Patents for class G9B subclass 15.003] 15.003 Subclass 15.003 indent level is 2 [N: remotely controlled] {G11B 15/02C}
 [List of Pre Grant Publications for class G9B subclass 15.004][List of Patents for class G9B subclass 15.004] 15.004 Subclass 15.004 indent level is 2 [N: by using processor, e.g. microcomputer; see provisional also G9B/15.001] {G11B 15/02P}
 [List of Pre Grant Publications for class G9B subclass 15.005][List of Patents for class G9B subclass 15.005] 15.005 Subclass 15.005 indent level is 2 by using counters [N: see prov. also G9B/15, G9B/27] {G11B 15/03}
 [List of Pre Grant Publications for class G9B subclass 15.006][List of Patents for class G9B subclass 15.006] 15.006 Subclass 15.006 indent level is 2 Preventing, inhibiting, or warning against accidental erasing or double recording (G9B/15.007 takes precedence) {G11B 15/04}
[List of Pre Grant Publications for class G9B subclass 15.007][List of Patents for class G9B subclass 15.007] 15.007 Subclass 15.007 indent level is 2 by sensing features present on or derived from record carrier or container (G9B/15.019 takes precedence) [N: see provisional also G9B/15.002] {G11B 15/05}
[List of Pre Grant Publications for class G9B subclass 15.013][List of Patents for class G9B subclass 15.013] 15.013 Subclass 15.013 indent level is 2 Manually-operated control; Solenoid-operated control [N: G9B/15.049 takes precedence] {G11B 15/10}
[List of Pre Grant Publications for class G9B subclass 15.016][List of Patents for class G9B subclass 15.016] 15.016 Subclass 15.016 indent level is 2 Masking of heads; [N: circuits for] Selecting or switching of heads between operative and inoperative functions [N: or between different operative functions or for selection between operative heads]; Masking of beams, e.g. of light beams [N: track selection by moving the magnetic head G9B/5.181] {G11B 15/12}
[List of Pre Grant Publications for class G9B subclass 15.019][List of Patents for class G9B subclass 15.019] 15.019 Subclass 15.019 indent level is 2 by sensing presence, absence or position of record carrier or container {G11B 15/16}
[List of Pre Grant Publications for class G9B subclass 15.021][List of Patents for class G9B subclass 15.021] 15.021 Subclass 15.021 indent level is 1 Driving; Starting; Stopping; Arrangements for control or regulation thereof [N: G9B/15.074 takes precedence; handling tapes or filamentary material in general B65H23/00] {G11B 15/18}
[List of Pre Grant Publications for class G9B subclass 15.022][List of Patents for class G9B subclass 15.022] 15.022 Subclass 15.022 indent level is 2 [N: Driving of both record carrier and head (G9B/15.055 takes precedence; mounting of head G9B/5.173)] {G11B 15/18B}
[List of Pre Grant Publications for class G9B subclass 15.031][List of Patents for class G9B subclass 15.031] 15.031 Subclass 15.031 indent level is 2 [N: for record carriers inside containers] {G11B 15/18C}
 [List of Pre Grant Publications for class G9B subclass 15.033][List of Patents for class G9B subclass 15.033] 15.033 Subclass 15.033 indent level is 2 Moving record carrier backwards or forwards by finite amounts, i.e. backspacing, forward spacing {G11B 15/20}
 [List of Pre Grant Publications for class G9B subclass 15.034][List of Patents for class G9B subclass 15.034] 15.034 Subclass 15.034 indent level is 2 Stopping means (slowing-down preparatory to stopping or speed-changing G9B/15.07; speed-controlling by mechanical linkage G9B/15.071; brake constructions in general F16D) [N: G9B/15.008 takes precedence; inside container G9B/23.049] {G11B 15/22}
 [List of Pre Grant Publications for class G9B subclass 15.035][List of Patents for class G9B subclass 15.035] 15.035 Subclass 15.035 indent level is 2 Drive disengaging means {G11B 15/24}
[List of Pre Grant Publications for class G9B subclass 15.036][List of Patents for class G9B subclass 15.036] 15.036 Subclass 15.036 indent level is 2 Driving record carriers by members acting directly or indirectly thereon [N: G9B/15.049 takes precedence; Driving features inside container, see G9B/23.049 and subgroups] {G11B 15/26}
[List of Pre Grant Publications for class G9B subclass 15.044][List of Patents for class G9B subclass 15.044] 15.044 Subclass 15.044 indent level is 2 Driving record carriers by pneumatic means [N: pneumatic control for capstans driving the record carrier by frictional contact G9B/15.038] {G11B 15/38}
[List of Pre Grant Publications for class G9B subclass 15.046][List of Patents for class G9B subclass 15.046] 15.046 Subclass 15.046 indent level is 2 Driving record carriers otherwise than by electric motor {G11B 15/40}
 [List of Pre Grant Publications for class G9B subclass 15.048][List of Patents for class G9B subclass 15.048] 15.048 Subclass 15.048 indent level is 2 Control or regulation of mechanical tension of record carrier, e.g. tape tension (controlling tension in filamentary material in general B65H59/00) [N: by speed regulation G9B/15.054; by using reserve loops G9B/15.074] {G11B 15/43}
[List of Pre Grant Publications for class G9B subclass 15.049][List of Patents for class G9B subclass 15.049] 15.049 Subclass 15.049 indent level is 2 Speed-changing arrangements; Reversing arrangements; Drive transfer means therefor {G11B 15/44}
[List of Pre Grant Publications for class G9B subclass 15.054][List of Patents for class G9B subclass 15.054] 15.054 Subclass 15.054 indent level is 2 Controlling, regulating, or indicating speed [N: dependent on position of tape in reserve, loop G9B/15.074, G9B/15.075] {G11B 15/46}
[List of Pre Grant Publications for class G9B subclass 15.055][List of Patents for class G9B subclass 15.055] 15.055 Subclass 15.055 indent level is 3 in arrangements for recording or reproducing wherein both record carriers and heads are driven [N: see provisional also G9B/15.022] {G11B 15/467}
[List of Pre Grant Publications for class G9B subclass 15.063][List of Patents for class G9B subclass 15.063] 15.063 Subclass 15.063 indent level is 3 [N: by using pilot tracking tones embedded in binary coded signals, e.g. using DSV/CDS values of coded signals] {G11B 15/46E}
 [List of Pre Grant Publications for class G9B subclass 15.07][List of Patents for class G9B subclass 15.07] 15.07 Subclass 15.07 indent level is 3 Starting; Accelerating; Decelerating; Arrangements preventing malfunction during drive change {G11B 15/48}
 [List of Pre Grant Publications for class G9B subclass 15.071][List of Patents for class G9B subclass 15.071] 15.071 Subclass 15.071 indent level is 3 by mechanical linkage, e.g. clutch {G11B 15/50}
 [List of Pre Grant Publications for class G9B subclass 15.072][List of Patents for class G9B subclass 15.072] 15.072 Subclass 15.072 indent level is 3 by using signals recorded on, or derived from, record carrier {G11B 15/52}
 [List of Pre Grant Publications for class G9B subclass 15.073][List of Patents for class G9B subclass 15.073] 15.073 Subclass 15.073 indent level is 3 by stroboscope; by tachometer (speedometers or tachometers G01P) {G11B 15/54}
[List of Pre Grant Publications for class G9B subclass 15.074][List of Patents for class G9B subclass 15.074] 15.074 Subclass 15.074 indent level is 1 the record carrier having reserve loop, e.g. to minimise inertia during acceleration [N: measuring or control in connection therewith] {G11B 15/56}
 [List of Pre Grant Publications for class G9B subclass 15.075][List of Patents for class G9B subclass 15.075] 15.075 Subclass 15.075 indent level is 2 with vacuum column {G11B 15/58}
[List of Pre Grant Publications for class G9B subclass 15.076][List of Patents for class G9B subclass 15.076] 15.076 Subclass 15.076 indent level is 1 Guiding record carrier (guiding devices structurally associated with magazines or cassettes G9B/23.049) {G11B 15/60}
 [List of Pre Grant Publications for class G9B subclass 15.077][List of Patents for class G9B subclass 15.077] 15.077 Subclass 15.077 indent level is 2 [N: for track selection, acquisition or following] {G11B 15/60F}
[List of Pre Grant Publications for class G9B subclass 15.078][List of Patents for class G9B subclass 15.078] 15.078 Subclass 15.078 indent level is 2 [N: without displacing the guiding means] {G11B 15/60G}
[List of Pre Grant Publications for class G9B subclass 15.08][List of Patents for class G9B subclass 15.08] 15.08 Subclass 15.08 indent level is 2 on drum, e.g. drum containing rotating heads [N: G9B/15.084 takes precedence] {G11B 15/61}
[List of Pre Grant Publications for class G9B subclass 15.082][List of Patents for class G9B subclass 15.082] 15.082 Subclass 15.082 indent level is 2 Maintaining desired spacing between record carrier and head {G11B 15/62}
[List of Pre Grant Publications for class G9B subclass 15.084][List of Patents for class G9B subclass 15.084] 15.084 Subclass 15.084 indent level is 2 Threading; Loading; Automatic self-loading {G11B 15/66}
[List of Pre Grant Publications for class G9B subclass 15.093][List of Patents for class G9B subclass 15.093] 15.093 Subclass 15.093 indent level is 1 Guiding containers [N: e.g. loading, ejecting cassettes] {G11B 15/675}
[List of Pre Grant Publications for class G9B subclass 15.094][List of Patents for class G9B subclass 15.094] 15.094 Subclass 15.094 indent level is 2 [N: Details] {G11B 15/675A}
[List of Pre Grant Publications for class G9B subclass 15.097][List of Patents for class G9B subclass 15.097] 15.097 Subclass 15.097 indent level is 2 [N: with movement of the cassette parallel to its main side, i.e. front loading (G9B/15.11 takes precedence)] {G11B 15/675B}
[List of Pre Grant Publications for class G9B subclass 15.11][List of Patents for class G9B subclass 15.11] 15.11 Subclass 15.11 indent level is 2 [N: with movement of the cassette parallel to its main side and subsequent movement perpendicular thereto, i.e. front loading] {G11B 15/675C}
[List of Pre Grant Publications for class G9B subclass 15.117][List of Patents for class G9B subclass 15.117] 15.117 Subclass 15.117 indent level is 2 [N: with movement of the cassette perpendicular to its main side, i.e. top loading] {G11B 15/675D}
[List of Pre Grant Publications for class G9B subclass 15.124][List of Patents for class G9B subclass 15.124] 15.124 Subclass 15.124 indent level is 2 [N: with pivoting movement of the cassette holder] {G11B 15/675E}
[List of Pre Grant Publications for class G9B subclass 15.135][List of Patents for class G9B subclass 15.135] 15.135 Subclass 15.135 indent level is 2 Automatic cassette changing arrangements; [N: automatic tape changing arrangements] {G11B 15/68}
[List of Pre Grant Publications for class G9B subclass 15.136][List of Patents for class G9B subclass 15.136] 15.136 Subclass 15.136 indent level is 3 [N: with linearly moving rectangular box shaped magazines] [N0101] {G11B 15/68B}
[List of Pre Grant Publications for class G9B subclass 15.139][List of Patents for class G9B subclass 15.139] 15.139 Subclass 15.139 indent level is 3 [N: with fixed magazines having fixed cassette storage cells, e.g. in racks] [N0101] {G11B 15/68C}
[List of Pre Grant Publications for class G9B subclass 15.144][List of Patents for class G9B subclass 15.144] 15.144 Subclass 15.144 indent level is 3 [N: with rotatable magazine] [N0101] {G11B 15/68D}
 [List of Pre Grant Publications for class G9B subclass 15.152][List of Patents for class G9B subclass 15.152] 15.152 Subclass 15.152 indent level is 3 [N: the cassettes being conveyed within a cassette storage location, e.g. within a storage bin or conveying by belt] [N0101] {G11B 15/68E}
 [List of Pre Grant Publications for class G9B subclass 15.153][List of Patents for class G9B subclass 15.153] 15.153 Subclass 15.153 indent level is 3 [N: Control of the cassette changing arrangement] [N0101] {G11B 15/68F}
 [List of Pre Grant Publications for class G9B subclass 15.154][List of Patents for class G9B subclass 15.154] 15.154 Subclass 15.154 indent level is 3 [N: Automatic tape changing arrangements] [N0101] {G11B 15/68G}
 [List of Pre Grant Publications for class G9B subclass 15.155][List of Patents for class G9B subclass 15.155] 15.155 Subclass 15.155 indent level is 1 The record carrier being an endless loop record carrier [N: inside container G9B/15.032] {G11B 15/70}
[List of Pre Grant Publications for class G9B subclass 17][List of Patents for class G9B subclass 17] 17 GUIDING RECORD CARRIERS NOT SPECIFICALLY OF FILAMENTARY OR WEB FORM, OR OF SUPPORTS THEREFOR (GUIDING CARDS OR SHEETS G06K13/00) {G11B 17/00}
 [List of Pre Grant Publications for class G9B subclass 17.001][List of Patents for class G9B subclass 17.001] 17.001 Subclass 17.001 indent level is 1 [N: Programmed access to indexed parts of tracks of operating discs, by guiding the disc] {G11B 17/00A}
[List of Pre Grant Publications for class G9B subclass 17.002][List of Patents for class G9B subclass 17.002] 17.002 Subclass 17.002 indent level is 1 Details {G11B 17/02}
 [List of Pre Grant Publications for class G9B subclass 17.008][List of Patents for class G9B subclass 17.008] 17.008 Subclass 17.008 indent level is 2 [N: Selecting or spacing of record carriers for introducing the heads] {G11B 17/02D}
[List of Pre Grant Publications for class G9B subclass 17.003][List of Patents for class G9B subclass 17.003] 17.003 Subclass 17.003 indent level is 2 Positioning or locking of single discs {G11B 17/022}
 [List of Pre Grant Publications for class G9B subclass 17.012][List of Patents for class G9B subclass 17.012] 17.012 Subclass 17.012 indent level is 2 Centering or locking of a plurality of discs in a single cartridge {G11B 17/038}
[List of Pre Grant Publications for class G9B subclass 17.013][List of Patents for class G9B subclass 17.013] 17.013 Subclass 17.013 indent level is 2 Feeding or guiding single record carrier to or from transducer unit [N: (guiding during transducing operation G9B/17.062)] [C9410] {G11B 17/04}
[List of Pre Grant Publications for class G9B subclass 17.014][List of Patents for class G9B subclass 17.014] 17.014 Subclass 17.014 indent level is 3 [N: Details] [N9410] {G11B 17/04A}
[List of Pre Grant Publications for class G9B subclass 17.019][List of Patents for class G9B subclass 17.019] 17.019 Subclass 17.019 indent level is 3 [N: of disc inside cartridge only (G9B/17.039 takes precedence)] [N9410] {G11B 17/04C}
[List of Pre Grant Publications for class G9B subclass 17.031][List of Patents for class G9B subclass 17.031] 17.031 Subclass 17.031 indent level is 3 [N: of disc without cartridge only] [N9410] {G11B 17/04D}
 [List of Pre Grant Publications for class G9B subclass 17.038][List of Patents for class G9B subclass 17.038] 17.038 Subclass 17.038 indent level is 3 [N: of either disc inside cartridge or disc without cartridge] [N9410] {G11B 17/04E}
 [List of Pre Grant Publications for class G9B subclass 17.039][List of Patents for class G9B subclass 17.039] 17.039 Subclass 17.039 indent level is 3 [N: of disc having to be extracted from cartridge for recording or reproducing, e.g. co-operating with an extractable tray] [N9410] {G11B 17/04F}
 [List of Pre Grant Publications for class G9B subclass 17.04][List of Patents for class G9B subclass 17.04] 17.04 Subclass 17.04 indent level is 3 [N: of non-disc record carrier, e.g. card] [N9410] {G11B 17/04G}
[List of Pre Grant Publications for class G9B subclass 17.041][List of Patents for class G9B subclass 17.041] 17.041 Subclass 17.041 indent level is 1 from consecutive-access magazine of disc records {G11B 17/08}
 [List of Pre Grant Publications for class G9B subclass 17.042][List of Patents for class G9B subclass 17.042] 17.042 Subclass 17.042 indent level is 2 with horizontal transfer to the turntable from a stack arranged with a vertical axis {G11B 17/10}
[List of Pre Grant Publications for class G9B subclass 17.043][List of Patents for class G9B subclass 17.043] 17.043 Subclass 17.043 indent level is 2 with axial transfer to the turntable from a stack with a vertical axis {G11B 17/12}
 [List of Pre Grant Publications for class G9B subclass 17.05][List of Patents for class G9B subclass 17.05] 17.05 Subclass 17.05 indent level is 2 with transfer away from stack on turntable after playing {G11B 17/20}
[List of Pre Grant Publications for class G9B subclass 17.051][List of Patents for class G9B subclass 17.051] 17.051 Subclass 17.051 indent level is 1 from random access magazine of disc records {G11B 17/22}
[List of Pre Grant Publications for class G9B subclass 17.052][List of Patents for class G9B subclass 17.052] 17.052 Subclass 17.052 indent level is 2 [N: with movable magazine (G9B/17.057 to G9B/17.059 take precedence)] [N9706] {G11B 17/22B}
 [List of Pre Grant Publications for class G9B subclass 17.054][List of Patents for class G9B subclass 17.054] 17.054 Subclass 17.054 indent level is 2 [N: wherein the disks are transferred from a fixed magazine to a fixed playing unit using a moving carriage] [N9706] {G11B 17/22C}
 [List of Pre Grant Publications for class G9B subclass 17.055][List of Patents for class G9B subclass 17.055] 17.055 Subclass 17.055 indent level is 2 [N: the magazine consisting of a single rotatable tray carrying the disks] [N9706] {G11B 17/22D}
 [List of Pre Grant Publications for class G9B subclass 17.056][List of Patents for class G9B subclass 17.056] 17.056 Subclass 17.056 indent level is 2 [N: Control systems for magazines (G9B/17.054 takes precedence)] [N9706] {G11B 17/22E}
 [List of Pre Grant Publications for class G9B subclass 17.057][List of Patents for class G9B subclass 17.057] 17.057 Subclass 17.057 indent level is 2 the magazine having a toroidal or part-toroidal shape {G11B 17/24}
 [List of Pre Grant Publications for class G9B subclass 17.058][List of Patents for class G9B subclass 17.058] 17.058 Subclass 17.058 indent level is 2 the magazine having a cylindrical shape with vertical axis {G11B 17/26}
 [List of Pre Grant Publications for class G9B subclass 17.059][List of Patents for class G9B subclass 17.059] 17.059 Subclass 17.059 indent level is 2 the magazine having a cylindrical shape with horizontal axis {G11B 17/28}
 [List of Pre Grant Publications for class G9B subclass 17.06][List of Patents for class G9B subclass 17.06] 17.06 Subclass 17.06 indent level is 2 wherein the playing unit is moved according to the location of the selected record {G11B 17/30}
 [List of Pre Grant Publications for class G9B subclass 17.061][List of Patents for class G9B subclass 17.061] 17.061 Subclass 17.061 indent level is 1 Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing [N: damping of vibrations of record carriers on turntables by fluid-dynamic means G9B/19.029] {G11B 17/32}
 [List of Pre Grant Publications for class G9B subclass 17.062][List of Patents for class G9B subclass 17.062] 17.062 Subclass 17.062 indent level is 1 Guiding record carriers during transducing operation, e.g. for track following (G9B/17.061 takes precedence) {G11B 17/34}
[List of Pre Grant Publications for class G9B subclass 19][List of Patents for class G9B subclass 19] 19 DRIVING, STARTING, STOPPING RECORD CARRIERS NOT SPECIFICALLY OF FILAMENTARY OR WEB FORM, OR OF SUPPORTS THEREFOR; CONTROL THEREOF; CONTROL OF OPERATING FUNCTION (GUIDING SUCH RECORD CARRIERS G9B/17) [N: DRIVING BOTH DISC AND HEAD] {G11B 19/00}
[List of Pre Grant Publications for class G9B subclass 19.001][List of Patents for class G9B subclass 19.001] 19.001 Subclass 19.001 indent level is 1 Control of operating function, e.g. switching from recording to reproducing {G11B 19/02}
[List of Pre Grant Publications for class G9B subclass 19.002][List of Patents for class G9B subclass 19.002] 19.002 Subclass 19.002 indent level is 2 [N: Control panels] {G11B 19/02A}
 [List of Pre Grant Publications for class G9B subclass 19.004][List of Patents for class G9B subclass 19.004] 19.004 Subclass 19.004 indent level is 2 [N: Remotely controlled (remote control systems in general G08C)] [N0209] [C0210] {G11B 19/02R}
[List of Pre Grant Publications for class G9B subclass 19.005][List of Patents for class G9B subclass 19.005] 19.005 Subclass 19.005 indent level is 2 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions {G11B 19/04}
 [List of Pre Grant Publications for class G9B subclass 19.014][List of Patents for class G9B subclass 19.014] 19.014 Subclass 19.014 indent level is 2 by counting or timing of machine operations {G11B 19/06}
 [List of Pre Grant Publications for class G9B subclass 19.015][List of Patents for class G9B subclass 19.015] 19.015 Subclass 19.015 indent level is 2 by using devices external to the driving mechanisms, e.g. coin-freed switch (coin actuated mechanisms G07F5/00) {G11B 19/08}
 [List of Pre Grant Publications for class G9B subclass 19.016][List of Patents for class G9B subclass 19.016] 19.016 Subclass 19.016 indent level is 2 by sensing presence or absence of record in accessible stored position or on turntable {G11B 19/10}
[List of Pre Grant Publications for class G9B subclass 19.017][List of Patents for class G9B subclass 19.017] 19.017 Subclass 19.017 indent level is 2 by sensing distinguishing features of [N: or on] records, e.g. diameter [N: end mark] {G11B 19/12}
 [List of Pre Grant Publications for class G9B subclass 19.023][List of Patents for class G9B subclass 19.023] 19.023 Subclass 19.023 indent level is 2 by sensing movement or position of head, e.g. means moving in correspondence with head movements {G11B 19/14}
[List of Pre Grant Publications for class G9B subclass 19.024][List of Patents for class G9B subclass 19.024] 19.024 Subclass 19.024 indent level is 2 Manual control {G11B 19/16}
[List of Pre Grant Publications for class G9B subclass 19.027][List of Patents for class G9B subclass 19.027] 19.027 Subclass 19.027 indent level is 1 Driving; Starting; Stopping; Control thereof {G11B 19/20}
[List of Pre Grant Publications for class G9B subclass 19.028][List of Patents for class G9B subclass 19.028] 19.028 Subclass 19.028 indent level is 2 [N: Turntables, hubs and motors for disk drives; Mounting of motors in the drive (means for clamping of disk to turntable G9B/17.003 and subgroups)] [C0804] {G11B 19/20A}
 [List of Pre Grant Publications for class G9B subclass 19.033][List of Patents for class G9B subclass 19.033] 19.033 Subclass 19.033 indent level is 2 [N: Spindle motor power-up sequences] [N0804] {G11B 19/20C}
[List of Pre Grant Publications for class G9B subclass 19.034][List of Patents for class G9B subclass 19.034] 19.034 Subclass 19.034 indent level is 2 [N: Spindle motor power-down sequences] [N0804] {G11B 19/20D}
 [List of Pre Grant Publications for class G9B subclass 19.037][List of Patents for class G9B subclass 19.037] 19.037 Subclass 19.037 indent level is 2 [N: in multiple disk arrays, e.g. spindle synchronisation in RAID systems] [N0804] {G11B 19/20E}
 [List of Pre Grant Publications for class G9B subclass 19.038][List of Patents for class G9B subclass 19.038] 19.038 Subclass 19.038 indent level is 2 Brakes other than speed-regulating brakes (brake constructions in general F16D) {G11B 19/22}
[List of Pre Grant Publications for class G9B subclass 19.039][List of Patents for class G9B subclass 19.039] 19.039 Subclass 19.039 indent level is 2 Arrangements for providing constant relative speed between record carrier and head {G11B 19/24}
[List of Pre Grant Publications for class G9B subclass 19.042][List of Patents for class G9B subclass 19.042] 19.042 Subclass 19.042 indent level is 2 Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor {G11B 19/26}
 [List of Pre Grant Publications for class G9B subclass 19.046][List of Patents for class G9B subclass 19.046] 19.046 Subclass 19.046 indent level is 2 Speed controlling, regulating, or indicating (G9B/19.039 takes precedence; speedometers or tachometers G01P) {G11B 19/28}
[List of Pre Grant Publications for class G9B subclass 20][List of Patents for class G9B subclass 20] 20 SIGNAL PROCESSING NOT SPECIFIC TO THE METHOD OF RECORDING OR REPRODUCING; CIRCUITS THEREFOR {G11B 20/00}
 [List of Pre Grant Publications for class G9B subclass 20.001][List of Patents for class G9B subclass 20.001] 20.001 Subclass 20.001 indent level is 1 [N: Time compression or expansion] {G11B 20/00C}
 [List of Pre Grant Publications for class G9B subclass 20.002][List of Patents for class G9B subclass 20.002] 20.002 Subclass 20.002 indent level is 1 [N: Circuits for prevention of unauthorised reproduction or copying, e.g. piracy (indicating unauthorised use of record carriers in general G9B/23.087, television signal processing H04N5/913)] {G11B 20/00P}
 [List of Pre Grant Publications for class G9B subclass 20.003][List of Patents for class G9B subclass 20.003] 20.003 Subclass 20.003 indent level is 1 [N: Circuits for stereophonic or quadraphonic recording or reproducing] {G11B 20/00S}
[List of Pre Grant Publications for class G9B subclass 20.004][List of Patents for class G9B subclass 20.004] 20.004 Subclass 20.004 indent level is 1 Analogue recording or reproducing {G11B 20/02}
 [List of Pre Grant Publications for class G9B subclass 20.005][List of Patents for class G9B subclass 20.005] 20.005 Subclass 20.005 indent level is 2 [N: Error detection or correction] {G11B 20/02A}
 [List of Pre Grant Publications for class G9B subclass 20.006][List of Patents for class G9B subclass 20.006] 20.006 Subclass 20.006 indent level is 2 Direct recording or reproducing {G11B 20/04}
 [List of Pre Grant Publications for class G9B subclass 20.007][List of Patents for class G9B subclass 20.007] 20.007 Subclass 20.007 indent level is 2 Angle-modulation recording (angle modulation H03C; demodulation of angle modulated oscillations H03D) {G11B 20/06}
 [List of Pre Grant Publications for class G9B subclass 20.008][List of Patents for class G9B subclass 20.008] 20.008 Subclass 20.008 indent level is 2 Pulse-modulation recording or reproducing (pulse-code-modulation recording G9B/20.009; pulse modulation or pulse demodulation H03K) {G11B 20/08}
[List of Pre Grant Publications for class G9B subclass 20.009][List of Patents for class G9B subclass 20.009] 20.009 Subclass 20.009 indent level is 1 Digital recording or reproducing (digital computers in which at least part of the computation is effected electrically, arrangements for handling digital data G06F; transmission of digital information H04L) {G11B 20/10}
[List of Pre Grant Publications for class G9B subclass 20.01][List of Patents for class G9B subclass 20.01] 20.01 Subclass 20.01 indent level is 2 [N: Improvement or modification of read or write signals] {G11B 20/10A}
 [List of Pre Grant Publications for class G9B subclass 20.014][List of Patents for class G9B subclass 20.014] 20.014 Subclass 20.014 indent level is 2 [N: Pulse code modulation (PCM) recording or reproducing of audio signals (G9B/20.015 to G9B/20.046 take precedence)] [C9607] {G11B 20/10C}
[List of Pre Grant Publications for class G9B subclass 20.015][List of Patents for class G9B subclass 20.015] 20.015 Subclass 20.015 indent level is 2 Formatting, e.g. arrangement of data block or words on the record carriers [N: (within interface between computers and data recorders G06F3/06)] [C9607] {G11B 20/12}
[List of Pre Grant Publications for class G9B subclass 20.016][List of Patents for class G9B subclass 20.016] 20.016 Subclass 20.016 indent level is 3 [N: on tapes] [N9607] {G11B 20/12B}
 [List of Pre Grant Publications for class G9B subclass 20.026][List of Patents for class G9B subclass 20.026] 20.026 Subclass 20.026 indent level is 3 [N: on cards (optical aspect of optical cards G9B/7.004)] [N9607] [C0406] {G11B 20/12C}
[List of Pre Grant Publications for class G9B subclass 20.027][List of Patents for class G9B subclass 20.027] 20.027 Subclass 20.027 indent level is 3 [N: on discs] [N9607] {G11B 20/12D}
 [List of Pre Grant Publications for class G9B subclass 20.032][List of Patents for class G9B subclass 20.032] 20.032 Subclass 20.032 indent level is 3 [N: on films, e.g. for optical moving-picture soundtracks (optical aspect G9B/7.008)] [N9607] [C0406] {G11B 20/12F}
 [List of Pre Grant Publications for class G9B subclass 20.033][List of Patents for class G9B subclass 20.033] 20.033 Subclass 20.033 indent level is 3 [N: with more than one format/standard, e.g. conversion from CD-audio format to R-DAT format] [N9607] {G11B 20/12M}
[List of Pre Grant Publications for class G9B subclass 20.034][List of Patents for class G9B subclass 20.034] 20.034 Subclass 20.034 indent level is 2 using self-clocking codes {G11B 20/14}
[List of Pre Grant Publications for class G9B subclass 20.035][List of Patents for class G9B subclass 20.035] 20.035 Subclass 20.035 indent level is 3 [N: characterised by the use of two levels] {G11B 20/14A}
[List of Pre Grant Publications for class G9B subclass 20.042][List of Patents for class G9B subclass 20.042] 20.042 Subclass 20.042 indent level is 3 [N: characterised by the use of three levels] {G11B 20/14B}
 [List of Pre Grant Publications for class G9B subclass 20.044][List of Patents for class G9B subclass 20.044] 20.044 Subclass 20.044 indent level is 3 [N: characterised by the use of more than three levels] {G11B 20/14C}
 [List of Pre Grant Publications for class G9B subclass 20.045][List of Patents for class G9B subclass 20.045] 20.045 Subclass 20.045 indent level is 2 using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks {G11B 20/16}
[List of Pre Grant Publications for class G9B subclass 20.046][List of Patents for class G9B subclass 20.046] 20.046 Subclass 20.046 indent level is 2 Error detection or correction; Testing, [N: e.g. of drop-outs] {G11B 20/18}
 [List of Pre Grant Publications for class G9B subclass 20.06][List of Patents for class G9B subclass 20.06] 20.06 Subclass 20.06 indent level is 1 for correction of skew for multitrack recording {G11B 20/20}
[List of Pre Grant Publications for class G9B subclass 20.061][List of Patents for class G9B subclass 20.061] 20.061 Subclass 20.061 indent level is 1 for reducing distortions {G11B 20/22}
 [List of Pre Grant Publications for class G9B subclass 20.062][List of Patents for class G9B subclass 20.062] 20.062 Subclass 20.062 indent level is 2 [N: for reducing wow or flutter (by controlling the speed of the record carrier G9B/15.054, G9B/19.046)] {G11B 20/22A}
 [List of Pre Grant Publications for class G9B subclass 20.063][List of Patents for class G9B subclass 20.063] 20.063 Subclass 20.063 indent level is 1 for reducing noise [N: (control of amplification in general, e.g. dependent upon noise level H03G)] {G11B 20/24}
[List of Pre Grant Publications for class G9B subclass 21][List of Patents for class G9B subclass 21] 21 HEAD ARRANGEMENTS NOT SPECIFIC TO THE METHOD OF RECORDING OR REPRODUCING {G11B 21/00}
[List of Pre Grant Publications for class G9B subclass 21.001][List of Patents for class G9B subclass 21.001] 21.001 Subclass 21.001 indent level is 1 [N: Disposition of fixed heads, e.g. for scanning, selecting or following of tracks] {G11B 21/00D}
 [List of Pre Grant Publications for class G9B subclass 21.002][List of Patents for class G9B subclass 21.002] 21.002 Subclass 21.002 indent level is 2 [N: for track following] {G11B 21/00D2}
[List of Pre Grant Publications for class G9B subclass 21.003][List of Patents for class G9B subclass 21.003] 21.003 Subclass 21.003 indent level is 1 Driving or moving of heads {G11B 21/02}
[List of Pre Grant Publications for class G9B subclass 21.004][List of Patents for class G9B subclass 21.004] 21.004 Subclass 21.004 indent level is 2 [N: Programmed access in sequence to indexed parts of operating record carriers] {G11B 21/02A}
 [List of Pre Grant Publications for class G9B subclass 21.007][List of Patents for class G9B subclass 21.007] 21.007 Subclass 21.007 indent level is 2 for correcting time base error [N: during transducing operation, by driving or moving the head in a direction more or less parallel to the direction of travel of the recording medium, e.g. tangential direction on a rotating disc (by driving or moving the head in a direction which cuts across the direction of travel of the recording medium G9B/15.022, G9B/15.055, G9B/19.027B2)] {G11B 21/03}
[List of Pre Grant Publications for class G9B subclass 21.008][List of Patents for class G9B subclass 21.008] 21.008 Subclass 21.008 indent level is 2 Automatic feed mechanism producing a [N: progressive] transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, [N: e.g. by lead-screw (G9B/19.027B, G9B/21.012 and G9B/21.018 take precedence)] {G11B 21/04}
[List of Pre Grant Publications for class G9B subclass 21.012][List of Patents for class G9B subclass 21.012] 21.012 Subclass 21.012 indent level is 2 Track changing or selecting (G9B/21.021 takes precedence) [N: during transducing operation] {G11B 21/08}