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Class G9B | INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER | |
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([N: producing carriers of sound records for needle playback B29C39/00]; recording measured values in a way that does not require playback through a transducer G01D; photosensitive materials or processes for photographic purposes G03C; electrography, electrophotography, magnetography G03G; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards, G06K; transferring data from one type of record carrier to another G06K1/18; printing of data from record carriers G06K3/00; arrangements for producing a permanent visual presentation of the output data G06K15/00; arrangements or circuits for control of indicating devices using static means to present variable information G09G; coding, decoding or code conversion, in general H03M; circuits for coupling output of reproducer to radio receiver H04B1/20; circuits [N: or arrangements] specially adapted for [N: pictorial or] television signal recording [N: H04N1/21], H04N5/76, H04N9/79; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) |
[N: WARNING |
[C0804] |
This subclass was introduced on March 29, 1979 together with the closing of the old classification scheme (IdT) 42G and 42M |
Patent documents are continuously being reclassified from the closed IdT scheme into the IPC scheme |
General concordancy IPC to IdT groups is as follows : |
G9B/3: 42G4,42G6,42G7C,42G7D,42G7E,42G21 |
G9B/3.008: 42G4,42G4H |
G9B/3.009: 42G4C2,42G4G |
G9B/3.01: 42G4 |
G9B/3.011: 42G5,42G21A |
G9B/3.051- G9B/3.075: 42G4B,42G5 |
G9B/3.076: 42G4D |
G9B/3.078, G9B/3.079: 42G4C,42G4D |
G9B/3.08: 42G4E |
G9B/3.081: 42G4C,42G4D |
G9B/3.082: 42G28A |
G9B/3.083: 42G4 |
G9B/3.084: 42G26,42G26E |
G9B/3.097: 42G16B,42G22F |
G9B/3.098: 42G22F |
G9B/3.099: 42G14,42G16F |
G9B/3.103: 42G15 |
G9B/3.107- G9B/3.112: 42G14 |
G9B/5-G11B5/27B : 42G10 |
G9B/5.031: 42G10C |
G9B/5.032: 42M37G2D1F,42G10 |
G9B/5.033: 42M37G2D,42M37G2D1,42M37G2D3 |
G9B/5.034- G9B/5.108: 42G10A2-42G10A5 |
G9B/5.143- G9B/5.144: 42G10 |
G9B/5.145, G9B/5.146: 42M37G2D1F3,42G10,42G10C2 |
G9B/5.147- G9B/5.181: 42G10A2,42G10A6,42G18D3 |
G9B/5.182: 42G10A2,42G10D |
G9B/5.201, G9B/5.202: 42G10A2 |
G9B/5.229: 42G10A2 |
G9B/5.289, G9B/5.29: 42G10A5 |
G9B/5.291- G9B/5.293: 42G10B |
G9B/5.308, G9B/5.309: 42G13 |
G9B/7: 42G9,42G8B,42G8C,42M37G2 |
G9B/7.041- G9B/7.096: 42G9,42G18B |
G9B/7.097- G9B/7.138: 42G9,42G9A-42G9F |
G9B/7.139- G9B/7.194: 42G12,42G13B |
G9B/7.2: 42G8F,42G13,42G13A,42G13B |
G9B/9- G9B/9.024: 42G11,42M37G2 |
G9B/11- G9B/11.061: 42G11A |
G9B/13- G9B/13.004: 42G7,42G23 |
G9B/15- G9B/15.021: 42G18 |
G9B/15.003: 42G8D |
G9B/15.033: 42G18C |
G9B/15.034: 42G18C5 |
G9B/15.035: 42G18C5 |
G9B/15.036- G9B/15.042: 42G18C,42G18C4 |
G9B/15.046, G9B/15.047: 42G17,42G18 |
G9B/15.076: 42G18 |
G9B/15.08: 42G18D3 |
G9B/15.082, G9B/15.083: 42G18 |
G9B/15.092: 42G18D1AS |
G9B/17: 42G20 |
G9B/17.002- G9B/17.013: 42G20 |
G9B/17.041- G9B/17.05: 42G20C-42G20C5 |
G9B/17.051- G9B/17.06: 42G20D-42G20D1 |
G9B/17.061: 42G10 |
G9B/17.062: 42G10 |
G9B/19: 42G17,42G21,42G22 |
G9B/19.001- G9B/19.038: 42G21,42G21D,42G21E,42G22A-42G22E |
G9B/19.038- G9B/19.046: 42G17A-42G17i,42G21C-42G21D,42G22A-42G22E |
G9B/19.039- G9B/19.041: 42G21F |
G9B/20.003: 42G8H,42G8H1 |
G9B/20.007- G9B/20.008: 42G10 |
G9B/20.01: 42M37G2D1F,42M37G2D1F2 |
G9B/20.015: 42M37G2D1F4 |
G9B/20.06: 42M37G2D1F3 |
G9B/20.061- G9B/20.063: 42G8,42G8A |
G9B/21- G9B/21.029: 42G |
G9B/23.014- G9B/23.025: 42G28 |
G9B/23.059- G9B/23.06: 42G18C7E |
G9B/23.079: 42G18D1B |
G9B/23.083- G9B/23.095: 42G9,42G10,42G13,42G14 |
G9B/23.096: 42G26E |
G9B/25: 42G8D,42G20A,42G20B,42G9,42G10,42G11 |
G9B/25.001: 42G2,42G2A,42G9-42G11 |
G9B/25.002: 42G3-42G3B,42G9-42G11 |
G9B/25.005, G9B/25.008: 42G18,42G10G |
G9B/27- G9B/27.052: 42G8,42G8C,42G8G,42G13,42G13C,42G19,42G18D |
G9B/31: 42G7A,42G8D,42G23,42G24,42G24A,42G24B |
G9B/31.001: 42G24B |
G9B/31.003: 42G7A,42G24A |
G9B/33, G9B/33.002: 42G26A-42G26D,42G28 |
G9B/33.023: 42G25A |
The following groups are no longer used for the classification of new documents from August 1st, 1991. The backlog of these groups is being continuously reclassified in G9B/7.062 and subgroups |
G9B/7.06 |
G9B/7.077 |
G9B/7.078 |
G9B/7.087 |
G9B/7.09 |
The following IPC groups are not used in the internal ECLA classification scheme. Subject matter covered by these groups is classified in the following ECLA groups [C0802] : |
G11B5/65 covered by G9B/5.236 to G9B/5.24 |
G9B/5.2417 " G9B/5.241 |
G11B5/673 " G9B/5.241 |
G11B7/16 " G9B/7.112 |
G11B7/18 " G9B/7.112 |
G11B7/30 " G9B/7 |
G11B9/12-G11B9/14 " G9B/9 |
G11B11/24-G11B11/26 " G9B/11 |
G11B13/08 " G11B |
From the date indicated below, the following groups have been deleted from the classification scheme. The documents of these groups have been transferred to the new groups as follow: |
G9B/19.027B transferred to G9B/19.027(Apr.08) ] |
Notes |
This subclass covers : |
- recording or playback of information by relative movement between a record track and a transducer, the transducer directly producing, or being directly actuated by, modulation in the track being recorded or played-back, and the extent of modulation corresponding to the signal being recorded or played-back; |
- apparatus and machines for recording or playback, and parts thereof such as heads; |
- record carriers for use with such apparatus and machines; |
- associated working of other apparatus with such apparatus and machines; |
- [N: relative positioning or movement of transducers and record carriers before, during or after transducing operation, e.g. for accessing record carriers or parts thereof, or for track change, selection or acquisition or for track following or for accessing parts of tracks;] |
- [N: driving or moving of heads or record carriers or both heads and record carriers for increasing, maintaining or decreasing the relative speed before, during or after transducing operation] |
In this subclass, the following terms or expressions are used with the meanings indicated : |
- "head" includes any means for converting sinusoidal or non-sinusoidal electric wave-forms into variations of the physical condition of at least the adjacent surface of the record carrier, or vice versa; |
- "record carrier" means a body, such as a cylinder, disc, card, tape, or wire, capable of permanently holding information, which can be read-off by a sensing element movable relatively to the record carrier. |
[N: Notes |
Documents concerning relative positioning or movement of transducers and record carriers are classified in groups G9B/3 to G9B/7 and G9B/21when only the transducer is controlled and in groups G9B/15, G9B/17 and G9B/19when only the record carrier is controlled.When both record carrier and head are controlled, the documents are classified in G9B/15.022, G9B/15.023, G9B/19 andG9B/27.001. When a plurality of record carriers are controlled, the documents are classified in G9B/15.135, G9B/17.041, G9B/17.051 andG9B/27.001. By "access" is meant an operation including a relative movement for positioning between record carrier and head before, during or after transducing; this operation including "seek", "select", "change", "acquire" and "follow" functions for at least a part of a track on at least one record carrier. By "programmed access" is meant a sequence of access operations the result of the sequence being to acquire a want ed sequence of parts of tracks or a wanted sequence of tracks. Relative movement between head and record carrier also covers the movement of a coupling beam such as a light beam between the head and a stationary record carrier. "Movement of the head" also covers any virtual movement or any physical movement such as obtained by switching between successive transducing parts of the head or by moving the transducing zone of the head, i.e. by "scanning". If different transducing parts of the head are switchable, the number of transducing parts should be much smaller than the number of individual storage areas of the record carrier. Attention is drawn to the notes of subclass G11C.] |
CROSS-REFERENCE ART COLLECTIONS | |||
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