Differential gain error correction in color television systems

Details Differential gain error correction in color television systems Differential gain error correction in color television systems

1976-06-23

1978-06-13

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

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358 27, H04N 9535

Patent

active

040952568

ABSTRACT:
In a color television system a first periodic signal having subcarrier frequency is inserted into an amplitude-modulated carrier during line blanking interval with constant amplitude and there is inserted periodically into the first signal, at least once in every field scan, a second signal having a different mean amplitude from the first and a constant amplitude, an amplitude comparison between the first and second signals being utilized in the receiver to correct differential gain distortion.

REFERENCES:
patent: 3368029 (1968-02-01), Macdiarmid
patent: 3673320 (1972-06-01), Carnt et al.
patent: 3679816 (1972-07-01), Avins et al.
Hutson, Color Television Theory, McGraw-Hill, 1971, pp. 46-63.
Macdiamid et al., "Correcting Color Signal Distortion", Electronics World, Feb. 1966, p. 66.

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