Automatic contrast circuit for instantaneous compensation

Details Automatic contrast circuit for instantaneous compensation Automatic contrast circuit for instantaneous compensation

1989-02-13

1990-12-18

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358169, 358243, H04N 514

Patent

active

049790447

ABSTRACT:
An automatic contrast control circuit for a television receiver detects the variations in video signal brightness to compensate the brightness and contrast by supplying as a contrast control signal a direct voltage output which is a composite of the brightness signal and a limited beam current from an automatic brightness limiter circuit (ABL), thus it is possible to obtain a reproduced image with a sharp contrast without the shake of the image.

REFERENCES:
patent: 4005262 (1977-01-01), Fijisawa et al.
patent: 4091419 (1978-05-01), Rhee et al.
patent: 4209808 (1980-06-01), Harwood
patent: 4404593 (1983-09-01), Shanley, II et al.
patent: 4587554 (1986-05-01), Tamura et al.

Affiliated with

Also associated with

Rating

Automatic contrast circuit for instantaneous compensation 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 contrast circuit for instantaneous compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic contrast circuit for instantaneous compensation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1429296