Service switch arrangement for a color television receiver

Details Service switch arrangement for a color television receiver Service switch arrangement for a color television receiver

1977-05-12

1978-10-31

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 962

Patent

active

041237765

ABSTRACT:
A service switch in a color television receiver for simulating quiescent signal conditions to permit set-up adjustment of a color image reproducing kinescope responsive to luminance and chrominance signals processed by luminance and chrominance channels of the receiver. Separate, adjustable image brightness and contrast control networks are coupled to the luminance channel for respectively varying a D.C. level and peak-to-peak amplitude of the luminance signal. The switch has "normal" and "service" positions and is coupled to the chrominance channel, brightness and contrast networks, and a vertical deflection circuit of the receiver. In the "service" position, the switch renders the chrominance channel inoperative to process the chrominance signal, and disables vertical scanning of the kinescope. The switch also causes the brightness and contrast networks to establish predetermined values of the D.C. level and peak amplitude of the luminance signal substantially independent of the setting of the brightness and contrast networks, to facilitate proper service adjustment of the kinescope.

REFERENCES:
patent: 3525801 (1970-08-01), Willis

Affiliated with

Also associated with

Rating

Service switch arrangement 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 Service switch arrangement for a color television receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Service switch arrangement for a color television receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1837953