Sample and hold circuit for a control system in a video signal p

Details Sample and hold circuit for a control system in a video signal p Sample and hold circuit for a control system in a video signal p

1986-08-15

1987-06-30

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 29, 358 65, H04N 568, H04N 920

Patent

active

046774912

ABSTRACT:
A video signal processing and display system includes apparatus for automatically controlling the bias of an image display device. A sample and hold network of the control apparatus includes an amplifier, a switch and a storage capacitor. During sampling intervals the switch connects the capacitor directly to a bias control terminal. During substantially longer holding intervals, the switch connects the capacitor to the bias control terminal via the amplifier.

REFERENCES:
patent: 4130829 (1978-11-01), Kam
patent: 4387405 (1983-06-01), Hinn
patent: 4484228 (1984-11-01), Parker
patent: 4502073 (1985-02-01), Hinn
patent: 4587566 (1986-05-01), Hinn

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