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Class Information
Number: 375/250
Name: Pulse or digital communications > Pulse code modulation > Differential > Single bit (delta) > Compand (overload prevention) > Redundancy removal
Description: Subject matter where the delta modulation pulse train is replaced, for transmission purposes, by a derived pulse train containing fewer pulses, and converting the derived pulse train back to the delta modulation pulse train at the receiver.


Patents under this class:

Patent Number Title Of Patent Date Issued
7466658 Receiver and method for decoding of truncated data Dec. 16, 2008
7145936 Bandpass delta sigma truncator and method of truncating a multi-bit digital signal Dec. 5, 2006
7006566 Two stage equalizer for trellis coded systems Feb. 28, 2006
6476735 Method of encoding bits using a plurality of frequencies Nov. 5, 2002
6288657 Encoding apparatus and method, decoding apparatus and method, and distribution media Sep. 11, 2001
5963582 Mitigation of multipath effects in global positioning system receivers Oct. 5, 1999
5815530 Data converters for sound equipment Sep. 29, 1998
5799033 Method of error protected transmission, method of error protected reception of data and transmission system for transmission of data Aug. 25, 1998
5557635 Voice encode/decode subsystem in a system for acquisition of test data using pulse code modulation Sep. 17, 1996
5533052 Adaptive predictive coding with transform domain quantization based on block size adaptation, backward adaptive power gain control, split bit-allocation and zero input response compensation Jul. 2, 1996
5459714 Enhanced port activity monitor for an integrated multiport repeater Oct. 17, 1995
5448543 Apparatus for reproducing data from a regenerative signal using a PLH circuit having loop gain control Sep. 5, 1995
4783792 Apparatus for transmitting digital signal Nov. 8, 1988
4581746 Technique for insertion of digital data bursts into an adaptively encoded information bit stream Apr. 8, 1986
4538234 Adaptive predictive processing system Aug. 27, 1985
4491953 Dual mode coding Jan. 1, 1985
4394774 Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback Jul. 19, 1983
4369463 Gray scale image data compression with code words a function of image history Jan. 18, 1983
4302775 Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback Nov. 24, 1981
4272648 Gain control apparatus for digital telephone line circuits Jun. 9, 1981
4097697 Digital signal performance monitor Jun. 27, 1978
4077053 Television signal encoder utilizing a correlation between frames Feb. 28, 1978
4075655 Composite feedback predictive code communication system for a color TV signal including a carrier chrominance signal Feb. 21, 1978
4051530 Frame-to-frame coding system Sep. 27, 1977
4044306 Digital converter from pulse code modulation to continuous variable slope delta modulation Aug. 23, 1977
4005411 Compression of gray scale imagery to less than one bit per picture element Jan. 25, 1977
3971987 Gain method and apparatus for a delta modulator Jul. 27, 1976
3949299 Signal coding for telephone communication system Apr. 6, 1976
3937871 Code communication Feb. 10, 1976



 
 
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