Level shifter for an automatic kinescope bias sampling system

Details Level shifter for an automatic kinescope bias sampling system Level shifter for an automatic kinescope bias sampling system

1982-10-29

1984-11-13

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 27, 358 74, H04N 568, H04N 9535

Patent

active

044829213

ABSTRACT:
A system for automatically controlling the bias of a kinescope in a television receiver comprises a clamping reference network including an input coupling capacitor, and a sampling amplifier. Signals to be sampled are coupled from the clamping capacitor to the amplifier by a level shifting network for providing signals compatible with the input requirements of the amplifier. The level shifting network is non-conductive at all times except during the kinescope bias control intervals, thereby effectively decoupling the clamping capacitor to prevent its being discharged.

REFERENCES:
patent: 4331981 (1982-05-01), Parker
patent: 4387405 (1983-06-01), Hinn
patent: 4414577 (1983-11-01), Tallant

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