Video camera

Details Video camera Video camera

1990-10-31

1992-01-21

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821319, H04N 5238

Patent

active

050832093

ABSTRACT:
An automatic exposure control type video camera is designed to cope with the problem of deterioration in the image quality, for an object of higher brightness, by an arrangement in which a diaphragm is actuated when the brightness of the object light is below a predetermined threshold value, and in which the shutter speed is changed when the brightness of the object light is above the predetermined threshold value. More particularly, when the brightness of the object light is below a predetermined value, the shutter speed is set so as to remain constant and rotary diaphragm vanes, for example, are actuated mechanically to control the opening size of the diaphragm to limit the volume of incident light on the image sensing device. Conversely, when the brightness of the object light exceeds a predetermined value and the opening size of the diaphragm vanes reaches a predetermined value, the diaphragm is set so as to remain constant and the shutter is actuated to control the exposure time of the image sensing device to limit the incident light volume.

REFERENCES:
patent: 4455068 (1984-06-01), Izuhara
patent: 4471383 (1984-09-01), Shiono et al.
patent: 4534639 (1985-08-01), Konishi et al.
patent: 4554587 (1985-11-01), Ooi et al.
patent: 4689689 (1987-08-01), Saito et al.
patent: 4714966 (1987-12-01), Saito et al.
patent: 4734777 (1988-03-01), Okino et al.

Affiliated with

Also associated with

Rating

Video camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-119521