Color correction circuit for a color television receiver

Details Color correction circuit for a color television receiver Color correction circuit for a color television receiver

1977-10-06

1979-05-08

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, 358 28, H04N 962, H04N 9535

Patent

active

041539117

ABSTRACT:
A color correction circuit responsive to a VIR signal that includes a clamping circuit to clamp a color demodulated signal to a predetermined voltage level during the chrominance reference portion of the VIR signal. A sample-and-hold circuit samples the luminance reference portion of the VIR signal immediately succeeding the clamped portion and holds the sampled value, and a comparator compares the sampled signal with the predetermined clamping voltage to generate an error-correction voltage that can be applied to a gain-control amplifier in the chrominance channel to correct saturation and to a phase-control circuit to adjust the hue by shifting the phase of the locally generated subcarrier.

REFERENCES:
patent: 3673320 (1972-06-01), Carnt et al.
patent: 3950780 (1976-04-01), Freestone
patent: 4059838 (1977-11-01), Banker et al.

Affiliated with

Also associated with

Rating

Color correction circuit for a color television receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color correction circuit for a color television receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color correction circuit for a color television receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1235955