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Class Information
Number: 375/244
Name: Pulse or digital communications > Pulse code modulation > Differential
Description: Subject matter where the difference between the actual amplitude and a predicted, or locally decoded, value of the amplitude is encoded and transmitted.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609614 |
Uplink modulation and receiver structures for asymmetric OFDMA systems |
Oct. 27, 2009 |
| 7558326 |
Method and apparatus for sending auxiliary data on a TMDS-like link |
Jul. 7, 2009 |
| 7555061 |
Optical communication device |
Jun. 30, 2009 |
| 7472057 |
Detector for use in voice communications systems |
Dec. 30, 2008 |
| 7453855 |
Multiuser detection and interference suppression techniques for direct sequence spread spectrum systems in which all users employ same spreading code |
Nov. 18, 2008 |
| 7391813 |
Digital wireless communications device |
Jun. 24, 2008 |
| 7376555 |
Encoding and decoding of overlapping audio signal values by differential encoding/decoding |
May. 20, 2008 |
| 7336713 |
Method and apparatus for encoding and decoding data |
Feb. 26, 2008 |
| 7298783 |
Method of compressing sounds in mobile terminals |
Nov. 20, 2007 |
| 7299012 |
Circuit to add and subtract two differential signals |
Nov. 20, 2007 |
| 7266152 |
Digital signal processing device and digital signal processing method |
Sep. 4, 2007 |
| 7184483 |
Technique for emulating differential signaling |
Feb. 27, 2007 |
| 7142597 |
Full bridge integral noise shaping for quantization of pulse width modulation signals |
Nov. 28, 2006 |
| 7092682 |
Electronic circuit, modulation method, information processing device, and information processing method |
Aug. 15, 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 |
| 7020208 |
Differential clock signals encoded with data |
Mar. 28, 2006 |
| 7006568 |
3D wavelet based video codec with human perceptual model |
Feb. 28, 2006 |
| 6999516 |
Technique for emulating differential signaling |
Feb. 14, 2006 |
| 6985531 |
Dual domain differential encoder/decoder |
Jan. 10, 2006 |
| 6898201 |
Apparatus and method for inter-node communication |
May. 24, 2005 |
| 6889184 |
Device for improving voice signal in quality |
May. 3, 2005 |
| 6882296 |
Method of encoding a digital data stream |
Apr. 19, 2005 |
| 6865230 |
Filter system with reduced switch thermal noise and a .SIGMA..DELTA. modulator using such a filter |
Mar. 8, 2005 |
| 6862317 |
Modulation technique providing high data rate through band limited channels |
Mar. 1, 2005 |
| 6850572 |
Encoding/decoding apparatus and method for orientation interpolator node data |
Feb. 1, 2005 |
| 6768776 |
Transcoder-codec circuit arrangement and method that supports voice-switched hands-free radio operation |
Jul. 27, 2004 |
| 6760590 |
Communication terminal apparatus, base station apparatus, and radio communication method |
Jul. 6, 2004 |
| 6738428 |
Apparatus and methods for decoding a predictively encoded signal and removing granular noise |
May. 18, 2004 |
| 6727833 |
Adaptive .SIGMA..DELTA. modulation with one-bit quantization |
Apr. 27, 2004 |
| 6707855 |
Digital delta sigma modulator in a fractional-N frequency synthesizer |
Mar. 16, 2004 |
| 6658383 |
Method for coding speech and music signals |
Dec. 2, 2003 |
| 6594304 |
Adaptive configurable class-A/class-B transmit DAC for transceiver emission and power consumption control |
Jul. 15, 2003 |
| 6590945 |
Method and apparatus for frequency offset compensation |
Jul. 8, 2003 |
| 6578162 |
Error recovery method and apparatus for ADPCM encoded speech |
Jun. 10, 2003 |
| 6574281 |
Voice recording and playback mode using the G.726 half-rate within the personal handy phone system |
Jun. 3, 2003 |
| 6549580 |
Subset averaged median predictor for differential pulse code modulation |
Apr. 15, 2003 |
| 6546055 |
Carrier offset determination for RF signals having a cyclic prefix |
Apr. 8, 2003 |
| 6535153 |
Adaptive sigma-delta modulation with one-bit quantization |
Mar. 18, 2003 |
| 6522662 |
Method and apparatus for providing a 10BASE-T compatible home network over a single twisted-pair phone line |
Feb. 18, 2003 |
| 6463092 |
System and method for sending and receiving data signals over a clock signal line |
Oct. 8, 2002 |
| 6445745 |
Phase encoding methods for handling multiple phase modulated signals on a single channel |
Sep. 3, 2002 |
| 6418170 |
Method and apparatus for achieving 180.degree. phase invariant transmission in a PCM modem system |
Jul. 9, 2002 |
| 6384753 |
High density analog interface |
May. 7, 2002 |
| 6256354 |
Voice recording and playback mode using the G.726 half-rate within the personal handy phone system |
Jul. 3, 2001 |
| 6212238 |
Selective by-pass of analog mode in communication between digital devices |
Apr. 3, 2001 |
| 6172965 |
Duplex transmission scheme |
Jan. 9, 2001 |
| 6125139 |
Narrowband digital cordless telephone |
Sep. 26, 2000 |
| 6112236 |
Method and apparatus for making quality of service measurements on a connection across a network |
Aug. 29, 2000 |
| 6097760 |
Data communications system |
Aug. 1, 2000 |
| 6094458 |
Arrangements and methods for generating a radio frequency signal |
Jul. 25, 2000 |
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