DPCM Coding apparatus

Details DPCM Coding apparatus DPCM Coding apparatus

1977-04-04

1979-01-30

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 902

Patent

active

041375491

ABSTRACT:
A DPCM coding apparatus adapted for directly coding a composite color television signal is disclosed which carries out a so-called two-dimensional prediction using horizontal and vertical signals from a predetermined earlier period as predict value for DPCM while taking the color sub-carrier wave into consideration. The two-dimensional prediction allows immediate restoration after dropout of the coded signal should this occur.

REFERENCES:
patent: 3921204 (1975-11-01), Thompson

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