
G 06 F  ELECTRIC DIGITAL DATA PROCESSING (computers in which a part of the computation is effected hydraulically or pneumatically G06D, optically G06E; selfcontained input or output peripheral equipment G06K; computer systems based on specific computational models G06N; impedance networks using digital techniques H03H)


 Note 

 In this subclass, the following terms or expressions are used with the meaning indicated: 

 –  "handling" includes processing or transporting of data; 

 –  "data processing equipment" means an association of an electric digital data processor classifiable under group G06F 7/00, with one or more arrangements classifiable under groups G06F 1/00 to G06F 5/00 and G06F 9/00 to G06F 13/00. 

 Subclass Index 

1/  02  .  Digital function generators 

Note 

 In group G06F 1/02, it is desirable to add the indexing codes of group G06F 101:00. The indexing codes should be unlinked. [5] 

1/  025  .  .  for functions having twovalued amplitude, e.g. Walsh functions [5] 

1/  03  .  .  working, at least partly, by table lookup (G06F 1/025 takes precedence) [5] 

Note 

 In order to be classified in this group, the table must contain function values of the desired or an intermediate function, not merely coefficients. [5] 

1/  035  .  .  .  Reduction of table size [5] 

1/  04  .  Generating or distributing clock signals or signals derived directly therefrom 

1/  06  .  .  Clock generators producing several clock signals [5] 

1/  08  .  .  Clock generators with changeable or programmable clock frequency [5] 

1/  10  .  .  Distribution of clock signals [5] 

1/  12  .  .  Synchronisation of different clock signals [5] 

1/  14  .  .  Time supervision arrangements, e.g. real time clock [5] 

1/  16  .  Constructional details or arrangements (instrument details G12B) [5] 

1/  18  .  .  Packaging or power distribution [5] 

1/  20  .  .  Cooling means [5] 

1/  22  .  Means for limiting or controlling the pin/gate ratio [5] 

1/  24  .  Resetting means (microprogramme loading G06F 9/24; restoration from data faults G06F 11/00) [5] 

1/  26  .  Power supply means, e.g. regulation thereof (for memories G11C) [5] 

1/  28  .  .  Supervision thereof, e.g. detecting powersupply failure by out of limits supervision [5] 

1/  30  .  .  Means for acting in the event of powersupply failure or interruption, e.g. powersupply fluctuations (for resetting only G06F 1/24; involving the processing of datawords G06F 11/00) [5] 

1/  32  .  .  Means for saving power [5] 

3/  00  Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements (typewriters B41J; conversion of physical variables F15B 5/00, G01; image acquisition G06T 1/00, G06T 9/00; coding, decoding or code conversion, in general H03M; transmission of digital information H04L) [4] 

3/  02  .  Manual input, e.g. key, dial (electromechanical switches H01H; electronic switches characterised by the way in which the control signals are generated H03K 17/94) [3] 

3/  023  .  .  Arrangements for converting discrete items of information into a coded form, e.g. keyboards for generating alphanumeric codes, operand codes, instruction codes (keyboard switches in general H01H 13/70, H03K 17/94; coding in connection with keyboards or like devices, in general H03M 11/00) [3] 

3/  027  .  .  .  for insertion of the decimal point [3] 

3/  03  .  .  Arrangements for converting the position of a member into a coded form (in combination with display device G06F 3/033; positionindicating arrangements with manually operated feeler per se G06K 11/06) [3] 

3/  033  .  .  using a movable member cooperating with a display device, e.g. lightpen, joystick, tracingball [3] 

3/  037  .  .  .  wherein the display device is a cathoderay tube [3] 

3/  05  .  Digital input using the sampling of an analogue quantity at regular intervals of time (sampleandhold arrangements G11C 27/02; sampling per se H03K 17/00; analogue/digital conversion, in general H03M 1/00) 

3/  06  .  Digital input from, or digital output to, record carriers 

3/  08  .  .  from or to individual record carriers, e.g. punched card 

3/  09  .  Digital output to typewriters [3] 

3/  12  .  Digital output to print unit (digital output to typewriter G06F 3/09; arrangements for producing a permanent visual presentation of the output data using printers G06K 15/02) 

3/  13  .  Digital output to plotter (arrangements for producing a permanent visual presentation of the output data using plotters G06K 15/22) [3] 

3/  14  .  Digital output to display device (arrangements for producing a permanent visual presentation of the output data G06K 15/00; control of display in general G09G) 

3/  147  .  .  using display panels [3] 

3/  153  .  .  using cathoderay tubes [3] 

3/  16  .  Sound input; Sound output (conversion of speech into digital information or vice versa G10L) 

3/  18  .  Digital input from automatic curve follower (automatic curve followers per se G06K 11/02) [3] 

5/  00  Methods or arrangements for data conversion without changing the order or content of the data handled (coding, decoding or code conversion, in general H03M) [4] 

5/  01  .  for shifting, e.g. justifying, scaling, normalising [5] 

5/  06  .  for changing the speed of data flow, i.e. speed regularising 

7/  00  Methods or arrangements for processing data by operating upon the order or content of the data handled (logic circuits H03K 19/00) 

7/  04  .  .  Identity comparison, i.e. for like or unlike values 

7/  06  .  Arrangements for sorting, selecting, merging, or comparing data on individual record carriers (sorting of postal letters B07C; conveying record carriers from one station to another G06K 13/02) 

7/  08  .  .  Sorting, i.e. grouping record carriers in numerical or other ordered sequence according to the classification of at least some of the information they carry (by merging two or more sets of carriers in ordered sequence G06F 7/16) 

7/  10  .  .  Selecting, i.e. obtaining data of one kind from those record carriers which are identifiable by data of a second kind from a mass of ordered or randomlydistributed record carriers 

7/  12  .  .  .  with provision for printingout a list of selected items 

7/  14  .  .  Merging, i.e. combining at least two sets of record carriers each arranged in the same ordered sequence to produce a single set having the same ordered sequence 

7/  16  .  .  .  Combined merging and sorting 

7/  20  .  .  Comparing separate sets of record carriers arranged in the same sequence to determine whether at least some of the data in one set is identical with that in the other set or sets 

7/  22  .  Arrangements for sorting or merging computer data on continuous record carriers, e.g. tape, drum, disc 

7/  24  .  .  Sorting, i.e. extracting data from one or more carriers, rearranging the data in numerical or other ordered sequence, and rerecording the sorted data on the original carrier or on a different carrier or set of carriers (G06F 7/36 takes precedence) 

7/  26  .  .  .  the sorted data being recorded on the original record carrier within the same space in which the data had been recorded prior to their sorting, without using intermediate storage 

7/  32  .  .  Merging, i.e. combining data contained in ordered sequence on at least two record carriers to produce a single carrier or set of carriers having all the original data in the ordered sequence (G06F 7/36 takes precedence) 

7/  36  .  .  Combined merging and sorting 

7/  38  .  Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation [3] 

7/  40  .  .  using contactmaking devices, e.g. electromagnetic relay (G06F 7/46 takes precedence) 

7/  42  .  .  .  Adding; Subtracting 

7/  44  .  .  .  Multiplying; Dividing 

7/  46  .  .  using electromechanical countertype accumulators 

7/  48  .  .  using noncontactmaking devices, e.g. tube, solid state device; using unspecified devices [3] 

7/  49  .  .  .  Computations with a radix, other than binary, 8, 16 or decimal, e.g. ternary, negative or imaginary radices, mixed radix [3] 

7/  54  .  .  .  .  using columnshifting 

7/  544  .  .  .  for evaluating functions by calculation (with a lookup table G06F 1/02) [3] 

7/  548  .  .  .  .  Trigonometric functions; Coordinate transformations [3] 

7/  552  .  .  .  .  Powers or roots [3] 

7/  556  .  .  .  .  Logarithmic or exponential functions [3] 

7/  58  .  Random or pseudorandom number generators [3] 

7/  60  .  Methods or arrangements for performing computations using a digital nondenominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and nondenominational quantity representations [3] 

7/  62  .  .  Performing operations exclusively by counting total number of pulses [3] 

7/  64  .  .  Digital differential analysers, i.e. computing devices for differentiation, integration or solving differential or integral equations, using pulses representing increments; Other incremental computing devices for solving difference equations (G06F 7/70 takes precedence; differential analysers using hybrid computing techniques G06J 1/02) [3] 

7/  66  .  .  .  wherein pulses represent unitary increments only [3] 

7/  68  .  .  using pulse rate multipliers or dividers (G06F 7/70 takes precedence) [3] 

7/  70  .  .  using stochastic pulse trains, i.e. randomly occurring pulses the average pulse rates of which represent numbers [3] 

7/  72  .  .  using residue arithmetic [3] 

 
