Automatic focus adjusting device

Details Automatic focus adjusting device Automatic focus adjusting device

1992-02-11

1993-05-18

Gellner, Michael L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358227, G03B 1300

Patent

active

052125165

ABSTRACT:
An automatic focus adjusting device comprises an image sensor arranged to convert into a video signal an object image formed on its image sensing plane by a photo-taking lens optical system and to produce the video signal; a circuit which detects a high-frequency component included in the video signal; a circuit which detects from the video signal the degree of sharpness of the image on the basis of the width of the edge part of the image; a driving circuit which changes the position of the optical system relative to the image sensing plane in the direction in which the detection output of the high-frequency component and that of the degree of sharpness increase; and a control circuit which controls the driving speed of the driving circuit according to the detection output of the degree of sharpness.

REFERENCES:
patent: 4804831 (1989-02-01), Baba et al.

Affiliated with

Also associated with

Rating

Automatic focus adjusting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic focus adjusting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focus adjusting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-807361