Color video signal processing device with encoding and compressi

Details Color video signal processing device with encoding and compressi Color video signal processing device with encoding and compressi

1989-04-06

1991-11-19

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 1104

Patent

active

050670107

ABSTRACT:
There is provided a color video signal processing device in which pixels are thinned out for a whole picture plane with respect to each of two kinds of digital color difference signals in accordance with a predetermined role. The encoding is executed on a unit basis of a block consisting of (n.times.m) samples where (n and m are integers no less than 2) which are formed with respect to each of the two kinds of color difference signals whose pixels have been thinned out or a block consisting of (n.times.m) samples formed so as to include both of the two kinds of color difference signals whose pixels had been thinned out. The data compression is executed on a block unit basis.

REFERENCES:
patent: 4302775 (1981-11-01), Widergren
patent: 4635098 (1987-01-01), Thong
patent: 4764805 (1988-08-01), Rabbani et al.
patent: 4797729 (1989-01-01), Tsai
Pratt, Spatial Transform Coding of Color Image, IEEE Transactions on Cummunication Technology, vol. COM-19, No. 6, Dec. 1971, pp. 980-991.

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