Low-bit rate interframe video encoder with adaptive transformati

Details Low-bit rate interframe video encoder with adaptive transformati Low-bit rate interframe video encoder with adaptive transformati

1992-12-28

1994-09-27

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

H04N 7133, H04N 7137

Patent

active

053510860

ABSTRACT:
An interframe video encoder of the type known as a hybrid coder, combines the advantages of both the interfield and the interframe codings for low bit-rate video transmission. The pel elements of differential block from subtracter are rearranged and the correlation of the rearranged block is estimated. The correlation of the differential block is also provided. And then, one of the differential block and the rearranged block is subjected to two-dimensional transform according to the comparsion of the correlations.

REFERENCES:
patent: 4707738 (1987-11-01), Ferre et al.
patent: 4723161 (1988-02-01), Koga
patent: 4821119 (1989-04-01), Gharavi
patent: 4825285 (1989-04-01), Speidel et al.
patent: 5025482 (1991-06-01), Murakami et al.
patent: 5113255 (1992-05-01), Nagata et al.
patent: 5235419 (1993-08-01), Krause

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