| Class Number |
Class Name |
No. of Patents |
| 341/110 |
Analog to digital conversion followed by digital to analog conversion |
266 |
| 341/126 |
Analog to or from digital conversion |
232 |
| 341/155 |
Analog to digital conversion |
2505 |
| 341/158 |
Analog input compared with static reference |
301 |
| 341/161 |
Acting sequentially |
447 |
| 341/159 |
Parallel type |
483 |
| 341/160 |
Including priority encoder |
114 |
| 341/163 |
Recirculating |
197 |
| 341/162 |
Serial conversions with change in signal |
163 |
| 341/164 |
Single comparator and counter |
111 |
| 341/165 |
Single comparator and digital storage |
107 |
| 341/156 |
Coarse and fine conversions |
528 |
| 341/157 |
Intermediate conversion to frequency or number of pulses |
188 |
| 341/166 |
Intermediate conversion to time interval |
195 |
| 341/167 |
Dual slope |
111 |
| 341/169 |
Input signal compared with linear ramp |
99 |
| 341/170 |
Input signal compared with nonlinear ramp |
29 |
| 341/168 |
Plural slope |
40 |
| 341/172 |
Using charge transfer devices (e.g., charge coupled devices, charge transfer by switched capacitances) |
613 |
| 341/171 |
Using magnetic or cryogenic components |
31 |
| 341/127 |
Bipolar |
98 |
| 341/128 |
Dual slope analog to digital converter |
43 |
| 341/129 |
Plural slope analog to digital converter |
28 |
| 341/142 |
Converter is part of control loop |
67 |
| 341/132 |
Detecting analog signal peak |
65 |
| 341/143 |
Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation) |
1806 |
| 341/130 |
Difunction code as output |
6 |
| 341/144 |
Digital to analog conversion |
1848 |
| 341/151 |
Analog output represents a displacement or force |
13 |
| 341/145 |
Coarse and fine conversions |
398 |
| 341/147 |
Function generator |
73 |
| 341/146 |
Serial conversion |
38 |
| 341/148 |
Tree structure |
60 |
| 341/150 |
Using charge coupled devices or switched capacitances |
302 |
| 341/154 |
Using ladder network |
415 |
| 341/149 |
Using magnetic or cryogenic components |
10 |
| 341/153 |
Using weighted impedances |
185 |
| 341/152 |
With intermediate conversion of digital value to time interval |
170 |
| 341/131 |
Increasing converter resolution (e.g., dithering) |
268 |
| 341/141 |
Multiplex |
404 |
| 341/138 |
Nonlinear |
170 |
| 341/139 |
Automatic control for increasing converter range (e.g., gain ranging, automatic gain control) |
383 |
| 341/140 |
Linearization (e.g., nonlinear transfer characteristic compensates for nonlinear transducer) |
52 |
| 341/137 |
Using optical device, (e.g., fiber optics, cathode ray tubes) |
131 |
| 341/133 |
With particular solid state devices (e.g., gunn effect device, josephson device, drift transistor, using solid state active devices as impedances) with other at longer intervals) |
240 |
| 341/135 |
Current mirror |
129 |
| 341/136 |
Field effect transistor |
374 |
| 341/134 |
Integrated injection logic |
33 |
| 341/20 |
Bodily actuated code generator |
542 |
| 341/21 |
For handicapped user |
169 |
| 341/22 |
Including keyboard or keypad |
1309 |
| 341/33 |
Capacitive actuation |
241 |
| 341/30 |
For numerical pulse type transmission |
12 |
| 341/28 |
For pictorial or ideographic characters (e.g., design, chinese or japanese characters) |
95 |
| 341/32 |
Magnetic or inductive actuation |
62 |
| 341/31 |
Photoelectric actuation |
196 |
| 341/34 |
Pressure sensitive actuation |
242 |
| 341/23 |
Variable key legends |
334 |
| 341/27 |
With audible or tactile indicator |
120 |
| 341/24 |
With error prevention means (e.g., debounce, antichatter) |
130 |
| 341/25 |
With rollover feature (i.e., antidoublestrike) |
51 |
| 341/26 |
With particular key scanning feature |
427 |
| 341/29 |
With variable pulse spacing or grouping |
37 |
| 341/35 |
With rotary dial |
69 |
| 341/173 |
Code generator or transmitter |
180 |
| 341/184 |
Numerical pulse type |
3 |
| 341/187 |
Having counter or register |
10 |
| 341/190 |
Mechanical switch feature |
4 |
| 341/185 |
Multistage |
0 |
| 341/189 |
Pulse gating |
3 |
| 341/188 |
Serial pulse number actuation |
1 |
| 341/186 |
With gaseous or space discharge device |
0 |
| 341/174 |
Plural transmitters |
33 |
| 341/177 |
Producing different pulse frequencies |
23 |
| 341/176 |
Transmitter for remote control signal |
582 |
| 341/175 |
With code display at transmitter |
46 |
| 341/191 |
With gaseous or space discharge device feature |
2 |
| 341/192 |
With rotary distributor |
7 |
| 341/178 |
With variable pulse spacing or grouping |
26 |
| 341/181 |
Carrier frequency variation |
12 |
| 341/180 |
Plural channels |
6 |
| 341/179 |
Plural pulse shapes |
8 |
| 341/183 |
Pulse presence or absence in equal length code |
5 |
| 341/182 |
With variable pulse length |
19 |
| 341/120 |
Converter calibration or testing |
1004 |
| 341/121 |
Trimming control circuits |
67 |
| 341/118 |
Converter compensation |
1296 |
| 341/119 |
Temperature compensation |
128 |
| 341/50 |
Digital code to digital code converters |
1125 |
| 341/51 |
Adaptive coding |
981 |
| 341/62 |
Bcd (binary-coded-decimal) to or from decimal |
12 |
| 341/104 |
Binary to decimal |
20 |
| 341/95 |
Byte length changed |
265 |
| 341/106 |
Coding by table look-up techniques |
574 |
| 341/93 |
Complementers |
33 |
| 341/61 |
Data rate conversion |
461 |
| 341/105 |
Decimal to binary |
9 |
| 341/86 |
Generator runs until new code is generated |
18 |
| 341/88 |
Multiple conversions using same converter |
28 |
| 341/101 |
Parallel to serial |
285 |
| 341/78 |
Programmable structure |
40 |
| 341/89 |
Reversible converters |
25 |
| 341/100 |
Serial to parallel |
328 |
| 341/55 |
Substituting specified bit combinations for other prescribed bit combinations |
193 |
| 341/102 |
To or from "n" out of "m" codes |
119 |
| 341/103 |
"n" out of "m" to "x" out of "y" |
29 |
| 341/90 |
To or from alphanumeric code formats |
50 |
| 341/91 |
To or from baudot code |
10 |
| 341/92 |
To or from hollerith code |
2 |
| 341/63 |
To or from bit count codes |
226 |
| 341/107 |
To or from code based on probability |
334 |
| 341/96 |
To or from constant distance codes |
35 |
| 341/98 |
Binary to gray |
40 |
| 341/97 |
Gray to binary |
48 |
| 341/76 |
To or from differential codes |
152 |
| 341/77 |
To or from delta modulation codes |
86 |
| 341/99 |
To or from display device codes |
16 |
| 341/80 |
To or from fibonacci codes |
16 |
| 341/81 |
To or from interleaved format |
76 |
| 341/58 |
To or from minimum d.c. level codes |
462 |
| 341/83 |
To or from mixed base codes |
48 |
| 341/85 |
Bcd (binary-coded decimal) to binary |
20 |
| 341/84 |
Binary to bcd (binary-coded decimal) |
22 |
| 341/82 |
To or from mixed code formats |
31 |
| 341/56 |
To or from multi-level codes |
120 |
| 341/57 |
Binary to or from ternary |
111 |
| 341/75 |
To or from nonlinear codes |
60 |
| 341/68 |
To or from nrz (nonreturn-to-zero) codes |
161 |
| 341/69 |
Return-to-zero to or from nrz (nonreturn-to-zero) codes |
60 |
| 341/70 |
To or from bi-phase level code (e.g., split phase code, manchester code) |
87 |
| 341/71 |
To or from bi-phase space or mark codes (e.g., double frequency code, fm code) |
25 |
| 341/73 |
To or from coded mark inversion |
39 |
| 341/72 |
To or from delay modulation code (e.g., miller code, three frequency code, mfm code) |
22 |
| 341/74 |
To or from double density code |
4 |
| 341/64 |
To or from number of pulses |
32 |
| 341/65 |
To or from huffman codes |
355 |
| 341/66 |
To or from morse code |
9 |
| 341/60 |
To or from packed format |
162 |
| 341/52 |
To or from particular bit symbol |
52 |
| 341/54 |
Bit represented by discrete frequency |
24 |
| 341/53 |
Bit represented by pulse width |
98 |
| 341/59 |
To or from run length limited codes |
603 |
| 341/67 |
To or from variable length codes |
839 |
| 341/79 |
Tree structure |
68 |
| 341/87 |
Unnecessary data suppression |
222 |
| 341/94 |
With error detection or correction |
216 |
| 341/1 |
Digital pattern reading type converter |
44 |
| 341/4 |
According to nonlinear function |
9 |
| 341/17 |
Actuated by physical projection |
16 |
| 341/7 |
Antiambiguity feature |
30 |
| 341/16 |
Brush and contacts or conductive pattern |
62 |
| 341/12 |
Cathode ray |
18 |
| 341/5 |
For x or y coordinate determination (e.g., stylus-pad) |
118 |
| 341/9 |
Having combined (e.g., denominational, combination code) coding pattern |
54 |
| 341/10 |
Constant distance code |
44 |
| 341/11 |
Incremental |
142 |
| 341/15 |
Magnetic, inductive or capacitive |
203 |
| 341/13 |
Optical |
397 |
| 341/14 |
Having optical waveguide |
41 |
| 341/2 |
Plural denominationally related carriers (e.g., coarse/fine geared discs) |
52 |
| 341/3 |
Plural types of codes on single carrier |
27 |
| 341/8 |
Real and complementary patterns |
15 |
| 341/6 |
With directional discrimination |
73 |
| 341/899 |
Miscellaneous |
31 |
| 341/111 |
Phase or time of phase change |
96 |
| 341/112 |
Synchro or resolver signal |
53 |
| 341/116 |
Analog resolver or synchro signal to digital signal |
169 |
| 341/113 |
Coarse and fine |
14 |
| 341/114 |
Control system |
30 |
| 341/115 |
Converter compensation |
60 |
| 341/117 |
Digital signal to analog resolver or synchro signal |
53 |
| 341/200 |
Quantizer |
136 |
| 341/108 |
Reversible analog to digital converters |
62 |
| 341/122 |
Sample and hold |
428 |
| 341/123 |
Having variable sampling rate |
171 |
| 341/124 |
Sampled and held input signal with linear return to datum |
23 |
| 341/125 |
Sampled and held input signal with nonlinear return to datum |
9 |
| 341/109 |
Stochastic techniques |
12 |
