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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 |
| 7583584 |
System and method for time diversity |
Sep. 1, 2009 |
| 7574355 |
Apparatus and method for determining a quantizer step size |
Aug. 11, 2009 |
| 7541959 |
High speed signal processor |
Jun. 2, 2009 |
| 7532671 |
Gain control method and apparatus |
May. 12, 2009 |
| 7453942 |
Method and unit for substracting quantization noise from a PCM signal |
Nov. 18, 2008 |
| 7406157 |
Methods and apparatuses for determining loop characteristics using an extended voice-band modem |
Jul. 29, 2008 |
| 7391813 |
Digital wireless communications device |
Jun. 24, 2008 |
| 7391814 |
Gain control method and apparatus |
Jun. 24, 2008 |
| 7386052 |
Automation device using FSK modulation |
Jun. 10, 2008 |
| 7356085 |
Embedded multiple description scalar quantizers for progressive image transmission |
Apr. 8, 2008 |
| 7336713 |
Method and apparatus for encoding and decoding data |
Feb. 26, 2008 |
| 7333547 |
Methods and devices for dynamic quantizing input of a soft decision decoder |
Feb. 19, 2008 |
| 7330555 |
Coding device and method, and recording medium |
Feb. 12, 2008 |
| 7324598 |
Apparatus and method to reduce quantization error |
Jan. 29, 2008 |
| 7315602 |
Digital spread spectrum frequency synthesizer |
Jan. 1, 2008 |
| 7313186 |
Method and apparatus for implementing wavelet filters in a digital system |
Dec. 25, 2007 |
| 7295617 |
ADPCM decoder |
Nov. 13, 2007 |
| 7289781 |
Device for receiving digital signals |
Oct. 30, 2007 |
| 7289565 |
Multiple description coding communication system |
Oct. 30, 2007 |
| 7266152 |
Digital signal processing device and digital signal processing method |
Sep. 4, 2007 |
| 7233624 |
Method and system for all digital gain control |
Jun. 19, 2007 |
| 7142597 |
Full bridge integral noise shaping for quantization of pulse width modulation signals |
Nov. 28, 2006 |
| 7119701 |
Techniques for detection of an active connection to a network |
Oct. 10, 2006 |
| 7088779 |
Method and apparatus for reducing the word length of a digital input signal and method and apparatus for recovering a digital input signal |
Aug. 8, 2006 |
| 7046260 |
Menu generating method and recording device for a record carrier |
May. 16, 2006 |
| 7031395 |
Apparatus and methods for digital-to-analog conversion |
Apr. 18, 2006 |
| 7020189 |
Method and apparatus for implementing digital filters in the data path of a PCM modem for efficient transition of a second analog-to-digital conversion process |
Mar. 28, 2006 |
| 7002913 |
Packet loss compensation method using injection of spectrally shaped noise |
Feb. 21, 2006 |
| 6985532 |
Ultra wideband (UWB) transmitter architecture |
Jan. 10, 2006 |
| 6973143 |
Soft-normalizer for a channel decoder |
Dec. 6, 2005 |
| 6950641 |
Apparatus, and an associated method, for increasing receiver sensitivity of a direct conversion receiver |
Sep. 27, 2005 |
| 6909746 |
Fast robust data compression method and system |
Jun. 21, 2005 |
| 6894602 |
System and method for active detection of connection to a network |
May. 17, 2005 |
| 6823017 |
Systems, methods and computer program products for filtering glitches from measured values in a sequence of code points |
Nov. 23, 2004 |
| 6823018 |
Multiple description coding communication system |
Nov. 23, 2004 |
| 6785340 |
PCM upstream and downstream system for universal digital loop carrier |
Aug. 31, 2004 |
| 6754267 |
Image processing apparatus |
Jun. 22, 2004 |
| 6751260 |
Detecting superimposed information channels for modem connections |
Jun. 15, 2004 |
| 6728319 |
Decoding method and apparatus |
Apr. 27, 2004 |
| 6697434 |
Method for tracing optimal path using Trellis-based adaptive quantizer |
Feb. 24, 2004 |
| 6647064 |
ADPCM encoding apparatus, ADPCM decoding apparatus and delay circuit |
Nov. 11, 2003 |
| 6600788 |
Narrow-band filter including sigma-delta modulator implemented in a programmable logic device |
Jul. 29, 2003 |
| 6574280 |
Method and apparatus for detecting and determining characteristics of a digital channel in a data communication system |
Jun. 3, 2003 |
| 6504863 |
Method and apparatus for adaptive bit resolution in a digital receiver and digital transmitter |
Jan. 7, 2003 |
| 6493389 |
Method and device for modifying data in an encoded data stream |
Dec. 10, 2002 |
| 6486811 |
Offset-free analog-to-digital converter |
Nov. 26, 2002 |
| 6480550 |
Method of compressing an analogue signal |
Nov. 12, 2002 |
| 6477211 |
Transcoding of a data stream |
Nov. 5, 2002 |
| 6466629 |
Multi-carrier transmission systems |
Oct. 15, 2002 |
| 6417949 |
Broadband communication system for efficiently transmitting broadband signals |
Jul. 9, 2002 |
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