Pulse code modulation > Differential > Quantizer or inverse quantizer > Patents

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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:

1 2 3 4 5

Patent Number	Title Of Patent	Date Issued
4317208	ADPCM System for speech or like signals	Feb. 23, 1982
4292651	Expansion and compression of television signals by use of differential coding	Sep. 29, 1981
4268861	Image coding	May. 19, 1981
4229820	Multistage selective differential pulse code modulation system	Oct. 21, 1980
4144543	Predictive codec capable of selecting one of at least three prediction signals in two steps	Mar. 13, 1979
4107610	Data transmission system using a sequential approximation encoding and decoding technique	Aug. 15, 1978
4023199	Method and apparatus for encoding color video signals	May. 10, 1977
3991269	Digital coding without additional bits to provide sign information	Nov. 9, 1976
3973199	Prediction differential pulse code modulation system with adaptive compounding	Aug. 3, 1976