Automatic chroma level system

Details Automatic chroma level system Automatic chroma level system

1977-01-19

1978-08-08

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9535

Patent

active

041060547

ABSTRACT:
A color television receiver chrominance channel has first and second chrominance amplifiers supplying chrominance demodulators. An automatic chrominance control (ACC) is operative upon the first chrominance amplifier to maintain a substantially constant signal level. An automatic chrominance level control including a symmetrical amplitude limiter having a nonlinear gain characteristic for chrominance signals above a predetermined amplitude threshold is interposed between the first and second chrominance amplifiers.

REFERENCES:
patent: 2845573 (1958-07-01), Macovski
patent: 3272915 (1966-09-01), Theriault
patent: 3864723 (1975-02-01), Carpenter

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