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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 |
| 6417949 |
Broadband communication system for efficiently transmitting broadband signals |
Jul. 9, 2002 |
| 6405338 |
Unequal error protection for perceptual audio coders |
Jun. 11, 2002 |
| 6404820 |
Method for storage and reconstruction of the extended hamming code for an 8-dimensional lattice quantizer |
Jun. 11, 2002 |
| 6400770 |
High speed encoding and decoding methods for analog subscriber connections |
Jun. 4, 2002 |
| 6356213 |
System and method for prediction-based lossless encoding |
Mar. 12, 2002 |
| 6243495 |
Method a group of picture structure in MPEG video |
Jun. 5, 2001 |
| 6212238 |
Selective by-pass of analog mode in communication between digital devices |
Apr. 3, 2001 |
| 6157741 |
Image processing apparatus and image processing method |
Dec. 5, 2000 |
| 6144853 |
Method and apparatus for digital cordless telephony |
Nov. 7, 2000 |
| 6137809 |
Quantization noise compensator apparatus and method |
Oct. 24, 2000 |
| 6112236 |
Method and apparatus for making quality of service measurements on a connection across a network |
Aug. 29, 2000 |
| 6081552 |
Video coding using a maximum a posteriori loop filter |
Jun. 27, 2000 |
| 6081295 |
Method and apparatus for transcoding bit streams with video data |
Jun. 27, 2000 |
| 6075820 |
Sampling receiver with multi-branch sigma-delta modulators and digital channel mismatch correction |
Jun. 13, 2000 |
| 6072837 |
Quantizing apparatus and quantizing method |
Jun. 6, 2000 |
| 5999218 |
Adaptive quantization controller |
Dec. 7, 1999 |
| 5901178 |
Post-compression hidden data transport for video |
May. 4, 1999 |
| 5874910 |
Analog signal coding and transmission apparatus and method capable of operation with multiple types of analog and digital signals |
Feb. 23, 1999 |
| 5870435 |
Quantization/inverse quantization unit selectably accommodating multiple video encoding standards and including differential pulse code modulator |
Feb. 9, 1999 |
| 5870434 |
Apparatus and method for quantizing a digital signal based on quantizing steps including odd-numbered steps |
Feb. 9, 1999 |
| 5802109 |
Speech encoding communication system |
Sep. 1, 1998 |
| 5802108 |
Waveform correction apparatus |
Sep. 1, 1998 |
| 5754235 |
Bit-rate conversion circuit for a compressed motion video bitstream |
May. 19, 1998 |
| 5751359 |
Method for quantizing compressed video signals |
May. 12, 1998 |
| 5734679 |
Voice signal transmission system using spectral parameter and voice parameter encoding apparatus and decoding apparatus used for the voice signal transmission system |
Mar. 31, 1998 |
| 5661755 |
Encoding and decoding of a wideband digital information signal |
Aug. 26, 1997 |
| 5621760 |
Speech coding transmission system and coder and decoder therefor |
Apr. 15, 1997 |
| 5596602 |
Data compression rate control method and apparatus |
Jan. 21, 1997 |
| 5568514 |
Signal quantizer with reduced output fluctuation |
Oct. 22, 1996 |
| 5555273 |
Audio coder |
Sep. 10, 1996 |
| 5537440 |
Efficient transcoding device and method |
Jul. 16, 1996 |
| 5534930 |
Method for constructing a quantization pattern codebook |
Jul. 9, 1996 |
| 5528298 |
Image encoding apparatus |
Jun. 18, 1996 |
| 5524027 |
Data receiver, method of calculating metrics, and signal processing device |
Jun. 4, 1996 |
| 5487087 |
Signal quantizer with reduced output fluctuation |
Jan. 23, 1996 |
| 5471209 |
Sigma-delta converter having a digital logic gate core |
Nov. 28, 1995 |
| 5428396 |
Variable length coding/decoding method for motion vectors |
Jun. 27, 1995 |
| 5406560 |
Speech packet communication system |
Apr. 11, 1995 |
| 5386436 |
Synchronization system for use in digital transmission system |
Jan. 31, 1995 |
| 5323188 |
DPCM predictive encoder |
Jun. 21, 1994 |
| 5323154 |
Data compressing and expanding apparatus |
Jun. 21, 1994 |
| 5317522 |
Method and apparatus for noise burst detection in a signal processor |
May. 31, 1994 |
| RE34562 |
Amplitude-adaptive vector quantization system |
Mar. 15, 1994 |
| 5283646 |
Quantizer control method and apparatus |
Feb. 1, 1994 |
| 5283814 |
Apparatus for processing digital signal |
Feb. 1, 1994 |
| 5259001 |
ADPCM decoder with an integral digital receive gain and method therefor |
Nov. 2, 1993 |
| 5235418 |
Method and apparatus for low frequency removal in vector quantization |
Aug. 10, 1993 |
| 5233660 |
Method and apparatus for low-delay CELP speech coding and decoding |
Aug. 3, 1993 |
| 5230060 |
Speech coder and decoder for adaptive delta modulation coding system |
Jul. 20, 1993 |
| 5202685 |
Digital sigma-delta modulator having a limiter circuit |
Apr. 13, 1993 |
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