Focus detection using an image signal extracted before digital s

Details Focus detection using an image signal extracted before digital s Focus detection using an image signal extracted before digital s

1995-09-05

1999-01-19

Shalwala, Bipin

Television

Camera, system and detail

Combined image signal generator and general image signal...

348240, 348249, 348358, 382300, H04N 5235, H04N 5262, H04N 5225

Patent

active

058619178

ABSTRACT:
In an image pickup apparatus having an electronic zooming function for enlarging and interpolating an image by electronic image processing of an image pickup signal output from an image pickup device, a focus is detected by extracting a predetermined focal signal varying depending upon a focal state from the image pickup signal before the image pickup signal undergoes enlargement/interpolation processing by electronic zooming.

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patent: 5150217 (1992-09-01), Senuma et al.
patent: 5223934 (1993-06-01), Hong
patent: 5225940 (1993-07-01), Ishii et al.
patent: 5253064 (1993-10-01), Yamamoto et al.
patent: 5517239 (1996-05-01), Nakayama

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