Automatic gain control system

Details Automatic gain control system Automatic gain control system

1975-04-30

1976-02-03

Libman, George H.

Telegraphy

Systems

Simplex-reversing periodic

375326, H04N 552

Patent

active

039365999

ABSTRACT:
An automatic gain control system applicable to a television receiver is described. Synchronizing pulses contained in the video detector output are sensed to obtain a measure of the signal strength. This is done by applying the detected output, containing the pulses, to a threshold circuit to produce current increments representative of the excess of said pulses over the threshold. The current increments thus obtained are then applied to a non-linear amplifier which, as a bi-directional source of current, supplies charging or discharging current, depending upon signal strength variation, to an integrating network to obtain a smoothed gain control voltage. The circuit is characterized by both fast attack and fast release and may be used with or without external gating. It is suitable for general AGC control in a television receiver which must be substantially immune to aircraft flutter.

REFERENCES:
patent: 3624290 (1971-11-01), Hofmann

Affiliated with

Also associated with

Rating

Automatic gain control system 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 gain control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic gain control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2123063