Color television receiving apparatus

Details Color television receiving apparatus Color television receiving apparatus

1977-08-19

1980-01-15

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, 358 40, H04N 9537

Patent

active

041841735

ABSTRACT:
A color television receiver for receiving a composite color television signal of the type having a chrominance component and which may include a VIR signal having a chrominance reference signal, comprises an input circuit, such as a band-pass amplifier, for receiving the chrominance signal and the chrominance reference signal, a chrominance demodulator for transforming the chrominance signal into red, blue, and green color signals, a video image display for presenting the color signals as a video picture, and a chrominance channel providing a pathway for the chrominance signal and chrominance reference signal between the input circuit and the chrominance demodulator. Included in the chrominance channel are first and second variable gain control circuits. A VIR-signal sensitive circuit is included to control the first variable gain control circuit in accordance with the amplitude of the chrominance reference signal. The second variable gain control circuit, interposed between the first variable gain control circuit and the demodulator, is selectively adjustable to provide preference adjustment of the amplitude of the chrominance signal. In the described embodiment, a level detector is included in advance of the second gain control circuit to provide to the VIR-signal sensitive circuit a level corresponding to the level of the chrominance reference signal.

REFERENCES:
patent: 3624279 (1971-11-01), Curtis
patent: 3943560 (1976-03-01), Freestone
patent: 3950780 (1976-04-01), Freestone
patent: 4059838 (1977-11-01), Banker et al.
patent: 4096515 (1978-06-01), Brown, Jr. et al.
Babcoke-At Last !Automatic Color-Electronic Servicing, Jul. 1976-pp. 30-32.

Affiliated with

Also associated with

Rating

Color television receiving apparatus 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 television receiving apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color television receiving apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1030374