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Class Information
Number: 375/245
Name: Pulse or digital communications > Pulse code modulation > Differential > Quantizer or inverse quantizer
Description: Subject matter including a means for converting the instantaneous amplitude of the transmitted signal to the nearest of a fixed number of discrete amplitude levels, or reverse quantizer.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5136615 |
Predictive decoder |
Aug. 4, 1992 |
| 5134475 |
Adaptive leak HDTV encoder |
Jul. 28, 1992 |
| 5128963 |
3-mode PCM/DPCM/APCM maximizing dynamic range |
Jul. 7, 1992 |
| 5124703 |
Digital signal requantizing circuit using multistage noise shaping |
Jun. 23, 1992 |
| 5107519 |
Coding device and a decoding device |
Apr. 21, 1992 |
| 5089818 |
Method of transmitting or storing sound signals in digital form through predictive and adaptive coding and installation therefore |
Feb. 18, 1992 |
| 5084904 |
Signal transmission device |
Jan. 28, 1992 |
| 5083310 |
Compression and expansion technique for digital audio data |
Jan. 21, 1992 |
| 5070402 |
Encoding image information transmission apparatus |
Dec. 3, 1991 |
| 5070515 |
Method and apparatus for processing digital signal |
Dec. 3, 1991 |
| 5061928 |
System and method of scaling error signals of caseload second order modulators |
Oct. 29, 1991 |
| 5054025 |
Method for eliminating errors in block parameters |
Oct. 1, 1991 |
| 5046071 |
Communication system capable of improving transmission efficiency by classifying a block sequence into significant and less significant blocks |
Sep. 3, 1991 |
| 5034965 |
Efficient coding method and its decoding method |
Jul. 23, 1991 |
| 5030952 |
Sigma-delta type analog to digital converter with trimmed output and feedback |
Jul. 9, 1991 |
| 5029185 |
Coded modulation for mobile radio |
Jul. 2, 1991 |
| 5028995 |
Picture signal processor, picture signal coder and picture signal interpolator |
Jul. 2, 1991 |
| 4995059 |
Predictive coding device |
Feb. 19, 1991 |
| 4979187 |
Predictive coding device |
Dec. 18, 1990 |
| 4974235 |
Method of adaptive quantization in differential pulse code modulation and a system for transmitting quantized data |
Nov. 27, 1990 |
| 4951139 |
Computer-based video compression system |
Aug. 21, 1990 |
| 4944012 |
Speech analyzing and synthesizing apparatus utilizing differential value-based variable code length coding and compression of soundless portions |
Jul. 24, 1990 |
| 4941152 |
Signal coding process and system for implementing said process |
Jul. 10, 1990 |
| 4918633 |
Digital image noise reduction method and transmission system |
Apr. 17, 1990 |
| 4897855 |
DPCM system with adaptive quantizer having unchanging bin number ensemble |
Jan. 30, 1990 |
| 4890283 |
High definition television augmentation channel |
Dec. 26, 1989 |
| 4878230 |
Amplitude-adaptive vector quantization system |
Oct. 31, 1989 |
| 4875222 |
Information signal transmission system by predictive differential coding |
Oct. 17, 1989 |
| 4873701 |
Modem and method for 8 dimensional trellis code modulation |
Oct. 10, 1989 |
| 4860315 |
ADPCM encoding and decoding circuits |
Aug. 22, 1989 |
| 4860314 |
Differential pulse code modulation arrangement, associated decoding arrangement and transmission system comprising at least such an encoding or decoding arrangement |
Aug. 22, 1989 |
| 4860313 |
Adaptive differential pulse code modulation (ADPCM) systems |
Aug. 22, 1989 |
| 4857928 |
Method and arrangement for a sigma delta converter for bandpass signals |
Aug. 15, 1989 |
| 4853780 |
Method and apparatus for predictive coding |
Aug. 1, 1989 |
| 4852125 |
Adaptive quantizing device for use in a differential encoder |
Jul. 25, 1989 |
| 4849758 |
System for transmitting or storing input signals |
Jul. 18, 1989 |
| 4847866 |
Differential pulse code modulation scheme incorporating a reconstructed value constrainer |
Jul. 11, 1989 |
| 4833535 |
Image transmission apparatus |
May. 23, 1989 |
| 4831636 |
Coding transmission equipment for carrying out coding with adaptive quantization |
May. 16, 1989 |
| 4825285 |
Hybrid encoder |
Apr. 25, 1989 |
| 4821290 |
Decoder for digital signal codes |
Apr. 11, 1989 |
| 4821119 |
Method and apparatus for low bit-rate interframe video coding |
Apr. 11, 1989 |
| 4807250 |
Coding device selectively connected to a transmission line |
Feb. 21, 1989 |
| 4805193 |
Protection of energy information in sub-band coding |
Feb. 14, 1989 |
| 4802004 |
Predictive coding system for TV signals |
Jan. 31, 1989 |
| 4797902 |
Digital signal transmission device |
Jan. 10, 1989 |
| 4797653 |
DPCM encoder |
Jan. 10, 1989 |
| 4791483 |
Adaptive differential pulse code modulation video encoder |
Dec. 13, 1988 |
| 4791654 |
Resisting the effects of channel noise in digital transmission of information |
Dec. 13, 1988 |
| 4788692 |
Adaptive differential pulse code modulation system |
Nov. 29, 1988 |
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