Picture signal coding/decoding method and device using thereof

Details Picture signal coding/decoding method and device using thereof Picture signal coding/decoding method and device using thereof

1994-04-25

1996-07-30

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

H04N 7137

Patent

active

055416594

ABSTRACT:
In a picture signal coding/decoding method and a picture signal coding/decoding device, the compressibility and visual picture quality of the picture pattern whose inter field correlation of high frequency decreases and inter field correlation of low frequency remains when slow movement occurs are improved and transmitted. The intra field component separate coding is performed in each field on the first and second fields of picture signal respectively, and by preventing the effect of inter field movement in advance, the dropping of compressibility by the movement is avoided and furthermore, new blocks is constructed by the resultant low frequency components of two fields and since it is so arranged that the component separate coding is performed in the frame, low frequency components which are not easily affected by slow movement can be coded efficiently, and as a result, the compressibility for the picture containing slow movement can be increased.

REFERENCES:
patent: 4858005 (1989-08-01), Lodge
patent: 5109451 (1992-04-01), Aono et al.
patent: 5189526 (1993-02-01), Sasson
patent: 5228028 (1993-07-01), Cucchi et al.
patent: 5235420 (1993-08-01), Gharavi
patent: 5268755 (1993-12-01), Nishino et al.
patent: 5351083 (1994-09-01), Tsukagoshi
patent: 5402185 (1995-03-01), De With et al.

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