Chroma overload detector using a differential amplifier

Details Chroma overload detector using a differential amplifier Chroma overload detector using a differential amplifier

1988-05-12

1990-10-09

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 40, 307362, H04N 968

Patent

active

049624172

ABSTRACT:
In a color television receiver having first and second chroma amplifiers, a chroma overload detector uses a differential amplifier for peak detection of a chrominance signal over a predetermined threshold level, and in response thereto, for generating a control signal and applying it to the second chroma amplifier to control the gain of the amplifier.

REFERENCES:
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patent: 3764734 (1973-10-01), Srivastava et al.
patent: 3867685 (1975-02-01), Ahmed
patent: 3877067 (1975-04-01), Furrey
patent: 3962723 (1976-06-01), Srivastava
patent: 4054905 (1977-10-01), Harwood et al.
patent: 4106054 (1978-08-01), Tzakis
patent: 4106055 (1978-08-01), Burdick et al.
patent: 4197557 (1980-04-01), Tuma et al.
patent: 4349834 (1982-09-01), Tonomura et al.
patent: 4630102 (1986-12-01), Wargo et al.

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