Automatic focusing device of video camera

Details Automatic focusing device of video camera Automatic focusing device of video camera

1985-02-19

1987-06-09

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

354402, H04N 326

Patent

active

046724567

ABSTRACT:
An apparatus and method for the automatic focussing of a video camera having a camera circuit for generating electric image signals corresponding to the brightness of an object, a circuit for sampling at least two sampling signals from the electric image signal, an A/D converter for obtaining at least one inclination value corresponding to at least one pair of the sampling signal, and a stop for stopping a focussing lens when at least one of the inclination values exceeds a predetermined value.

REFERENCES:
patent: 4354204 (1982-10-01), Kimura
patent: 4392726 (1983-07-01), Kimura
patent: 4422097 (1983-12-01), Inuiya
patent: 4470676 (1984-09-01), Konoshita
patent: 4531158 (1985-07-01), Murakami

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