Video camera with an automatic focusing system

Details Video camera with an automatic focusing system Video camera with an automatic focusing system

1988-10-07

1990-05-08

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 5232

Patent

active

049243179

ABSTRACT:
A video camera has an automatic focusing system provided with a focus detecting section for calculating and outputting a focus signal corresponding to a focus condition of an picked-up image from a video signal produced by an image pickup element. Either the image pickup element or a focusing lens in a photographic lens is oscillated back and forth of its present position, as needed, to detect an in-focus direction at the moment. The focusing lens is moved in the in-focus direction up to a position at which an optimum focus condition is obtained.

REFERENCES:
patent: 4370038 (1983-01-01), Kimura
patent: 4414575 (1988-11-01), Yamamoto et al.
patent: 4484806 (1984-11-01), Onishi et al.
patent: 4575764 (1986-03-01), Stauffer
patent: 4745484 (1988-05-01), Drexler et al.

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