Video coding and decoding apparatus including corresponding nonl

Details Video coding and decoding apparatus including corresponding nonl Video coding and decoding apparatus including corresponding nonl

1996-04-19

1998-03-31

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348407, 348413, 348416, 348699, H04N 712, H04N 1102, H04N 1104

Patent

active

057344310

ABSTRACT:
A video coding apparatus includes a motion compensation circuit for motion-compensating a picture signal in a frame previous to a frame of video signals input for each frame, and generating a motion compensation picture signal, a nonlinear processing circuit for compressing a motion compensation error signal representing an error between each of the input video signal and the motion compensation picture signal at a compression rate which rises as the error increases, and outputting a motion compensation error signal, and a coding circuit for orthogonally transforming the motion compensation error signal output from the nonlinear difference circuit, quantizing the orthogonally-transformed signal, and coding the quantized signal.

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