Video camera with automatic focus control

Details Video camera with automatic focus control Video camera with automatic focus control

1993-06-04

1995-06-06

Razavi, Michael T.

Television

Camera, system and detail

Optics

348354, H04N 5232

Patent

active

054226732

ABSTRACT:
A CCD sensor 3 generates video signals in response to an incident light representing an image of an image. In accordance with a video signal supplied from a focusing region of the CCD sensor, a first control section including a focusing control unit 9 generates a focus control signal. In response to the focus control signal, a drive circuit 10 and a motor 1 control an imaging lens 2 so as to focus the lens 2 on the image. Further, in response to a motion vector signal outputted from a motion vector detecting unit 6, a second control section including a distance measurement region control unit 7 controls a position of the focusing region so that the focusing region tracks motion of the image of the object. In addition, a view-finder 11 displays the video signals supplied from the CCD image sensor 3 and a cursor representing the focusing region.

REFERENCES:
patent: 4853789 (1989-08-01), Murashima et al.
patent: 5210566 (1993-05-01), Nishida
patent: 5345264 (1994-09-01), Murata et al.

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