Agc keying signal circuit

Details Agc keying signal circuit Agc keying signal circuit

H - Electricity

04

N

350/90

H04N 5/44 (2006.01) H03G 3/20 (2006.01) H04N 5/53 (2006.01)

Patent

CA 1129084

RCA 71,620 Abstract An automatic gain control keying signal circuit is provided for generating an automatic gain control (AGC) keying signal for a television AGC circuit. A keying signal is produced upon the normal coincidence of a sync pulse from the sync separator and a horizontal retrace pulse from the horizontal deflection system in a tele- vision receiver. The keying signal begins upon coincidence of the sync pulse and the horizontal retrace pulse and ends upon termination of the retrace pulse, thereby producing a keying signal pulse of substantially constant time duration, irrespective of the duration of the sync pulse. According to a further aspect of the invention, an "out-of-lock" signal is produced upon the occurrence of a horizontal retrace pulse which is not in coincidence with a sync pulse.

333312

Affiliated with

Also associated with

Rating

Agc keying signal circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-281233