Circuit for separating luminance and chrominance signals

Details Circuit for separating luminance and chrominance signals Circuit for separating luminance and chrominance signals

1991-01-15

1993-04-27

Razavi, Michael

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 39, H04N 964, H04N 977

Patent

active

052067157

ABSTRACT:
A circuit for separating the luminance signal and chrominance signal from a composite video signal in a digital signal processing system using adaptive 2H comb filters. The circuit according to the present invention generates luminance difference signals, and chrominance difference signals from the horizontal scanning lines of a composite video signal for the purpose of detecting the correlation of the chrominance difference signals as well as the correlation of the luminance difference signals to generate a correlation coefficient. The chrominance signal is accurately separated from a composite video signal in response to the generated correlation coefficient.

REFERENCES:
patent: 4703342 (1987-10-01), Takahashi
patent: 4809060 (1989-02-01), Saeki

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