Method and system for encoding and decoding video data

Details Method and system for encoding and decoding video data Method and system for encoding and decoding video data

1994-09-26

1996-06-11

Tran, Thai Q.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358342, 358310, H04N 5781

Patent

active

055261345

ABSTRACT:
An original image signal is encoded into an image code signal of a predetermined format through an approximation process on colors. A first luminance component is derived from the image code signal. A second luminance component is derived from the original image signal. A difference between the first luminance component and the second luminance component is derived. The difference is converted into a luminance corrective signal. The image code signal and the luminance corrective signal are transmitted via a common transmission line. In a decoder, the luminance corrective signal is decoded to a luminance difference signal, which is added to an image signal decoded from the image code signal.

REFERENCES:
patent: 4403250 (1983-09-01), Kellar
patent: 4652905 (1987-03-01), Lippel
patent: 4942476 (1990-07-01), Koga et al.
patent: 4956726 (1990-09-01), Takimoto et al.
patent: 5097349 (1992-03-01), Nomura et al.
patent: 5233434 (1993-08-01), Furuki et al.
"Compact Disc Digital Audio System" 908 IEC 1987.

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