Method and apparatus for detecting focusing in an image pickup d

Details Method and apparatus for detecting focusing in an image pickup d Method and apparatus for detecting focusing in an image pickup d

1985-07-19

1986-12-30

Adams, Russell E.

Facsimile and static presentation processing

Facsimile

Recording apparatus

354402, 354409, H04N 5232

Patent

active

046333193

ABSTRACT:
Apparatus for adjusting the focus of an optical system comprising an image pickup device providing an image detection plane where the image of an object is focused via the optical system to be adjusted and a circuit for processing the analog video signal provided by the pickup device to control the focus. The circuit comprises a means for forming a time and level shifted version for comparison with the unshifted analog video signal and means for shifting the focus to minimize the length of time during which this comparison exceeds a prescribed threshold level.

REFERENCES:
patent: 4301478 (1981-11-01), Sakane et al.
patent: 4333716 (1982-06-01), Sakane et al.
patent: 4470676 (1984-09-01), Kinoshita et al.

Affiliated with

Also associated with

Rating

Method and apparatus for detecting focusing in an image pickup d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting focusing in an image pickup d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting focusing in an image pickup d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1551380