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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 |
| 4771439 |
Differential coding circuit with reduced critical path applicable to DPCM |
Sep. 13, 1988 |
| 4757517 |
System for transmitting voice signal |
Jul. 12, 1988 |
| 4744085 |
Data processing device |
May. 10, 1988 |
| 4726037 |
Predictive communication system filtering arrangement |
Feb. 16, 1988 |
| 4713828 |
Data reduction circuit |
Dec. 15, 1987 |
| 4706260 |
DPCM system with rate-of-fill control of buffer occupancy |
Nov. 10, 1987 |
| 4694336 |
Digital data transmission method |
Sep. 15, 1987 |
| 4686512 |
Integrated digital circuit for processing speech signal |
Aug. 11, 1987 |
| 4685115 |
Apparatus for transmitting digital signals |
Aug. 4, 1987 |
| 4684983 |
Non-linear processor for reducing the dynamic range of a digitized error signal |
Aug. 4, 1987 |
| 4677423 |
ADPCM coder-decoder including partial band energy transition detection |
Jun. 30, 1987 |
| 4672441 |
Method and apparatus for picture data reduction for digital video signals |
Jun. 9, 1987 |
| 4665436 |
Narrow bandwidth signal transmission |
May. 12, 1987 |
| 4654863 |
Wideband adaptive prediction |
Mar. 31, 1987 |
| 4639778 |
Embedding quantization system for vector signals |
Jan. 27, 1987 |
| 4636856 |
Arrangement for two-dimensional DPCM coding |
Jan. 13, 1987 |
| 4633325 |
Adaptive predictive encoding and/or decoding apparatus |
Dec. 30, 1986 |
| 4622537 |
Predictive code conversion method capable of forcibly putting a feedback loop in an inactive state |
Nov. 11, 1986 |
| 4622680 |
Hybrid subband coder/decoder method and apparatus |
Nov. 11, 1986 |
| 4593398 |
Adaptive differential PCM system with residual-driven adaptation of feedback predictor |
Jun. 3, 1986 |
| 4592070 |
ADPCM encoder/decoder with improved tracking |
May. 27, 1986 |
| 4583114 |
Method of flow compression of data transmitted successively between a television transmitter and a television receiver, and a system for carrying out said method |
Apr. 15, 1986 |
| 4583237 |
Technique for synchronous near-instantaneous coding |
Apr. 15, 1986 |
| 4573167 |
Digital communication system, particularly color television transmission system |
Feb. 25, 1986 |
| 4571737 |
Adaptive differential pulse code modulation decoding circuit |
Feb. 18, 1986 |
| 4569058 |
Transmission system |
Feb. 4, 1986 |
| 4562467 |
Data compression apparatus and method for encoding and decoding multi-line signals |
Dec. 31, 1985 |
| 4562468 |
Adaptive predictive coding apparatus of television signal |
Dec. 31, 1985 |
| 4549304 |
ADPCM Encoder/decoder with signalling bit insertion |
Oct. 22, 1985 |
| 4540973 |
Quantizer for a DPCM encoder |
Sep. 10, 1985 |
| 4541102 |
High-speed difference pulse code modulation coder |
Sep. 10, 1985 |
| 4536880 |
Digital DPCM-coder having a high processing speed |
Aug. 20, 1985 |
| 4536741 |
Digital quantizer |
Aug. 20, 1985 |
| 4520491 |
Transmission system using differential pulse code modulation with adaptive prediction |
May. 28, 1985 |
| 4518950 |
Digital code converter |
May. 21, 1985 |
| 4519085 |
Differential data coding and decoding process and system restricting propagation of transmission errors |
May. 21, 1985 |
| 4513426 |
Adaptive differential pulse code modulation |
Apr. 23, 1985 |
| 4488175 |
DPCM Video signal processing technique with spatial subsampling |
Dec. 11, 1984 |
| 4481644 |
Differential pulse code modulation transmission system |
Nov. 6, 1984 |
| 4477915 |
Differential pulse code modulation transmission system |
Oct. 16, 1984 |
| 4475213 |
Digital code converter |
Oct. 2, 1984 |
| 4470146 |
Adaptive quantizer with instantaneous error robustness |
Sep. 4, 1984 |
| 4468790 |
System for the quantization of signals |
Aug. 28, 1984 |
| 4460923 |
Predictive coding system for television signals |
Jul. 17, 1984 |
| 4437087 |
Adaptive differential PCM coding |
Mar. 13, 1984 |
| 4411001 |
Differential pulse code modulation transmission system |
Oct. 18, 1983 |
| 4385393 |
Adaptive prediction differential PCM-type transmission apparatus and process with shaping of the quantization noise |
May. 24, 1983 |
| 4361893 |
Transmission system using differential pulse code modulation |
Nov. 30, 1982 |
| 4354273 |
ADPCM System for speech or like signals |
Oct. 12, 1982 |
| 4319082 |
Adaptive prediction differential-PCM transmission method and circuit using filtering by sub-bands and spectral analysis |
Mar. 9, 1982 |
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