Image sensing apparatus with sensitivity and exposure control

Details Image sensing apparatus with sensitivity and exposure control Image sensing apparatus with sensitivity and exposure control

1988-09-09

1989-05-23

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358209, 358219, H04N 5235, H04N 5238

Patent

active

048335363

ABSTRACT:
An image sensing apparatus having simple structural arrangement and improved responsivity includes an image sensor arranged to convert an optical image into an electrical signal; an exposure control circuit arranged to control an exposure state of the image sensor; a sensitivity control circuit arranged to control a sensitivity of the apparatus; and an arithmetic control circuit arranged to have the sensitivity increased to a predetermined degree by the sensitivity control circuit and to have a degree of exposure, controlled by the exposure control circuit, decreased approximately to the above-stated predetermined degree when an exposure condition is outside of the exposure controllable limits of the exposure control circuit. Since the apparatus has the sensitivity control circuit arranged to automatically control the sensitivity of the apparatus in combination with a display circuit which is arranged to display the operating state of the sensitivity control circuit, an erroneous operation can be prevented.

REFERENCES:
patent: 2901539 (1959-08-01), Morgan
patent: 3086077 (1963-04-01), Mayer
patent: 3691302 (1972-09-01), Gaebele et al.
patent: 4025955 (1977-05-01), Grallien et al.
patent: 4050085 (1977-09-01), Prince et al.
patent: 4141043 (1979-02-01), Liu
patent: 4152055 (1979-05-01), Ohta et al.
patent: 4174526 (1979-11-01), Geurts
patent: 4409472 (1983-10-01), Kimura
patent: 4427996 (1984-01-01), Tamura
patent: 4495520 (1985-01-01), Kravitz et al.
patent: 4532553 (1985-07-01), Brill
patent: 4542403 (1985-09-01), Zimmermann et al.
patent: 4554587 (1985-11-01), Ooi
Pentax Brochure: Instructions for Program Plus Model, p. 51, .COPYRGT.Asahi Optical, 6/84.

Affiliated with

Also associated with

Rating

Image sensing apparatus with sensitivity and exposure control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image sensing apparatus with sensitivity and exposure control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image sensing apparatus with sensitivity and exposure control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1734235