Clamp system used for television signal

Details Clamp system used for television signal Clamp system used for television signal

1989-02-23

1991-04-16

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358172, H04N 518

Patent

active

050087533

ABSTRACT:
A clamp system for television signal comprises a first clamp device for clamping to a clamp control voltage supplied from an external source by a horizontal clamp pulse and a second clamp device for controlling the DC potential of the television signal by adding the externally-supplied control voltage to an input television signal. The first clamp device is used during the period requiring an early clamp start, and the second clamp device is operated under normal conditions.

REFERENCES:
patent: 4516042 (1985-05-01), Nakomura
patent: 4544951 (1985-10-01), Yoshisoto
patent: 4583121 (1986-04-01), Yost
patent: 4612577 (1986-09-01), Keen
patent: 4651213 (1987-03-01), Takimoto
patent: 4688097 (1987-08-01), Lin
patent: 4748497 (1988-05-01), Sengoku
patent: 4816917 (1989-03-01), Yamomoto et al.
patent: 4853782 (1989-08-01), Asano et al.

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