Manual of U.S. Patent Classification
as of June 30, 2000

Class
701
DATA PROCESSING: VEHICLES, NAVIGATION, AND RELATIVE LOCATION

Class definitions may be accessed by clicking on the class title, above.
Subclass definitions may be accessed by clicking on the subclass number, below.

Patents classified in a subclass may be accessed by clicking on the " " icon following the subclass number, below.

( please note that links to definitions and classified patents may not be available for some classes and subclasses )

For search strategies, please refer to the Classification Index Explanation of Data web page.

Subclass		Title
ClassTitle		===> DATA PROCESSING: VEHICLES, NAVIGATION, AND RELATIVE LOCATION
1		VEHICLE CONTROL, GUIDANCE, OPERATION, OR INDICATION
2		. Remote control system
3		. Aeronautical vehicle
4		. . Altitude or attitude control or indication
5		. . . Rate of change (e.g., ascent, decent)
6		. . . . Angle of attack
7		. . . Air speed or velocity measurement
8		. . . Threshold or reference value
9		. . . . Warning signal or alarm
10		. . . Compensation for environmental conditions
11		. . . Auto pilot
12		. . . . Inner/outer loop
13		. . . Spacecraft or satellite
14		. . Flight condition indicating system
15		. . With indication or control of take-off
16		. . With indication or control of landing
17		. . . I.L.S. or radar guidance
18		. . . Profile of descent
19		. Railway vehicle
20		. . Railway vehicle speed control
21		. Marine vehicle
22		. Electric vehicle
23		. Automatic route guidance vehicle
24		. . On-board computer interact with a host computer
25		. . Storage or planning of route information
26		. . . Modification or correction of route information
27		. . Artificial intelligence (e.g., fuzzy logic)
28		. . Having image processing
29		. Vehicle diagnosis or maintenance indication
30		. . Indication of maintenance interval
31		. . Self-test
32		. . Vehicle or device ID
33		. . Plural processors or external processor
34		. . Detection of faulty sensor
35		. . With data recording device
36		. Vehicle subsystem or accessory control
37		. . Suspension control
38		. . . Attitude change suppressive control (e.g., antiroll or antipitch)
39		. . . Fail-safe system
40		. . . Artificial intelligence (e.g., fuzzy logic)
41		. . Steering control
42		. . . Feedback, transfer function or proportional and derivative (P&D) control
43		. . . Fail-safe system
44		. . . Artificial intelligence (e.g., fuzzy logic)
45		. . Control of vehicle safety devices (e.g., airbag, seat-belt, etc.)
46		. . . By integrating the amplitude of the input signal
47		. . . By frequency or waveform analysis
48		. . Cooperative or multiple control (e.g., suspension and braking)
49		. . Vehicle equipment position control (e.g., seat, mirror, door, window, headrest, or headlamp)
50		. Construction or agricultural-type vehicle (e.g., crane, forklift)
51		. Transmission control
52		. . Semiautomatic control (e.g., switchable between automatic and manual)
53		. . And other vehicle control
54		. . . Engine output control
55		. . By changing shift map, schedule, or pattern
56		. . . Having a plurality of preset maps, schedules, or patterns
57		. . Fuzzy logic
58		. . Adaptive control
59		. . . Model or learning means (e.g., neural network)
60		. . . Feedback control (e.g., closed loop)
61		. . . . Using a transmission ratio as feedback control
62		. . Fail-safe control (e.g., preventing a gear shift)
63		. . . Responsive to faulty sensor
64		. . Indicating a completion of a shift or a shift to be completed
65		. . Responsive to road, external, or ambient condition
66		. . Time regulated operations
67		. Clutch control
68		. . Adaptive control
69		. Control of power distribution between vehicle axis or wheels (e.g., four wheel drive vehicle)
70		. Indication or control of braking, acceleration, or deceleration
71		. . Antiskid, antilock, or brake slip control
72		. . . During cornering or turning of vehicle
73		. . . On split coefficient surface (u)
74		. . . Having particular means to determine a reference value for wheel slippage or pseudo-vehicle speed
75		. . . . Correction or modification
76		. . . Fail-safe system
77		. . . Artificial intelligence (e.g., fuzzy logic)
78		. . . Control of brake pressure
79		. . . . Having speed variation responsive means (e.g., acceleration, deceleration)
80		. . . . Having coefficient of friction or road condition determining means
81		. . . . Four wheel drive, electric, or heavy vehicles
82		. . Antispin, traction control, or drive slip control
83		. . . Control of brake pressure
84		. . . Control of engine torque
85		. . . . Having throttle valve positioning
86		. . . . Having fuel cutting or ignition timing retarding
87		. . . Control of transmission torque
88		. . . Restricting differential operation
89		. . . Four wheel drive vehicle
90		. . . Having particular slip threshold, target slip ratio, or target engine torque determining means
91		. . . Integrated with antiskid or other vehicle control system (e.g., cruise control, suspension)
92		. . . Fail-safe system
93		. . Vehicle speed control (e.g., cruise control)
94		. . . Having gradient responsive control to suppress hunting, overshooting, or undershooting
95		. . . . By transmission shifting control
96		. . . Having inter-vehicle distance or speed control
97		. . . Fail-safe system
98		. . . Artificial intelligence (e.g., fuzzy logic)
99		. With indicator or control of power plant (e.g., performance)
100		. . Gas turbine, compressor
101		. . Internal-combustion engine
102		. . . Digital or programmed data processor
103		. . . . Control of air/fuel ratio or fuel injection
104		. . . . . Controlling fuel quantity
105		. . . . . Controlling timing
106		. . . . . Artificial intelligence (e.g., fuzzy logic)
107		. . . . . Fail-safe system
108		. . . . . Exhaust gas circulation (EGC)
109		. . . . . Detection of O2 concentration
110		. . . . Speed, acceleration, deceleration
111		. . . . Vibration, roughness, knock
112		. . . . Engine stop, fuel shutoff
113		. . . . Starting, warmup
114		. . . . Backup, interrupt, reset, or test
115		. . . . Specific memory or interfacing device
116		. With indication or control to maintain fixed position
117		. Traffic analysis or control of surface vehicle
118		. . With determination of traffic density
119		. . With determination of traffic speed
120		. Traffic analysis or control of aircraft
121		. . With speed control or order
122		. . With course diversion
123		. With indication of fuel consumption rate or economy of usage
124		. Determining balance or center of gravity (e.g., load distribution of vehicle)
200		NAVIGATION
201		. Determination of travel data based on the start point and destination point
202		. . Route pre-planning
203		. . Great circle route
204		. Determination of E.T.A.
205		. Determination of along-track or cross-track deviations
206		. Employing way point navigation
207		. Employing position determining equipment
208		. . For use in a map data base system
209		. . . Including route searching or determining device
210		. . . . Route correction, modification, or verification
211		. . . Having audio or visual route guidance
212		. . . Having variable map scale
213		. . Using Global Positioning System (GPS)
214		. . . Means to improve accuracy of position or location
215		. . . . Having multiple GPS antennas or receivers (e.g., differential GPS)
216		. . . . Having an self-contained position computing means (e.g., dead reckoning)
217		. . Using dead-reckoning apparatus
218		. . Using R-O (D.M.E. and path) or Tacan equipment
219		. . Using Loran or Shoran or Decca equipment
220		. . Using inertial sensor
221		. . . With correction by noninertial sensor
222		. . Using star tracker
223		. . With radar or optical ground scanner
224		. With indicated course correction (compass deviation)
225		. Determining range without range measurement
226		. Space orbits or paths
300		RELATIVE LOCATION
301		. Collision avoidance
302		. Course to intercept

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Last Modified: 6 October 2000