Decoding system for compact high definition television receivers

Details Decoding system for compact high definition television receivers Decoding system for compact high definition television receivers

1993-10-07

1996-05-28

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348402, 348416, H04N 712, H04N 730

Patent

active

055216420

ABSTRACT:
A simplified decoding system for providing a reduced image frame to a high definition television receiver with a small size screen through the use of d.c. transform coefficients. The decoding system selectively decodes and inverse quantizes d.c. transform coefficients to produce a set of difference data, each of which represents an average of pixel differences between a block of two-dimensional pixels of a current frame and a corresponding block of its preceding frame. Each of two-dimensional motion vectors is also decoded and modified to derive a pixel data from the previous reduced image frame. The derived pixel data and the average pixel difference value are successively combined so as to generate the reduced frame.

REFERENCES:
patent: 5001559 (1991-03-01), Gonzales et al.
patent: 5046071 (1991-09-01), Tanoi
patent: 5113255 (1992-05-01), Nagata et al.
patent: 5189526 (1993-02-01), Sasson
patent: 5243420 (1993-09-01), Hibi
patent: 5262854 (1993-11-01), Ng
patent: 5278646 (1994-01-01), Civanlar et al.
patent: 5363139 (1994-11-01), Keith

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