Camera apparatus

Details Camera apparatus Camera apparatus

1997-01-09

1997-12-16

Faile, Andrew

Television

Camera, system and detail

Optics

348347, 348349, H04N 5232

Patent

active

056991169

ABSTRACT:
A camera, which includes a first lens group for a zoom operation, a second lens group for a focus adjustment operation, a motor for moving the first and second lens groups parallel to an optical axis, a sharpness signal detection circuit for extracting a sharpness signal according to a focusing degree from a video signal of an object image formed via the first and second lens groups, and a focus adjustment circuit for performing the focus adjustment operation on the basis of the sharpness signal output from the sharpness signal detection circuit, further includes a sharpness signal detection region changing circuit for changing a region for extracting the sharpness signal at a predetermined period within a picture obtained from the video signal.

REFERENCES:
patent: 5003339 (1991-03-01), Kikuchi et al.

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