Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1991-02-28
1992-09-22
Razavi, Michael
Facsimile and static presentation processing
Facsimile
Recording apparatus
358226, 358209, 2502017, 354402, H04N 5232
Patent
active
051502178
ABSTRACT:
A video camera system has a movable focusing lens which is automatically focused to form a sharp subject image on a CCD. The CCD generates a video signal based on light from a subject transmitted through the movable focusing lens. Contrast data are produced from smaller and larger image frames in a field on the CCD based on the generated video signal. The movable focusing lens is controlled on the basis of the contrast data in order to maximize the contrast data simultaneously within the smaller and larger image frames.
REFERENCES:
patent: 4542289 (1985-09-01), Yokoyama et al.
patent: 4804831 (1989-02-01), Baba et al.
patent: 4851657 (1989-06-01), Taniguchi et al.
patent: 4922346 (1990-05-01), Hidaka et al.
patent: 5003339 (1991-09-01), Kikuchi et al.
Senuma Satoko
Tsuruta Masaaki
Eslinger Lewis H.
Ho Tuan V.
Maioli Jay H.
Razavi Michael
Sony Corporation
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