Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-04-24
1993-03-23
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 13, 358138, H04N 7137
Patent
active
051969327
ABSTRACT:
In an image signal processing apparatus, first image data and second image data comprising a plurality of different sample data are input at the same time and are output sequentially following processing wherein data is subjected to thinning-out in direction horizontally of a screen so as to make locations of vertical direction screen data different from each other between the odd-number field period and the even-number field period. The thinned-out sample data are prediction-coded to output prediction-coded data, thus resulting in a substantial reduction of data quantity without deteriorating picture quality.
REFERENCES:
patent: 4716453 (1987-12-01), Pawalski
patent: 4782387 (1988-11-01), Sabri et al.
patent: 4860314 (1989-08-01), Boisson
patent: 4924298 (1990-05-01), Kitamura
Canon Kabushiki Kaisha
Kostak Victor R.
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