Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1990-02-27
1993-08-03
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358342, H04N 5781
Patent
active
052334341
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: 4652905 (1987-03-01), Lippel
patent: 5032901 (1991-07-01), Vlahos
"Compact Disc Digital Audio System" 908 IEC 1987.
Furuki Tsuneo
Hikawa Kazuo
Ito Yasuo
Richardson Robert L.
Victor Company of Japan Ltd.
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