Luminance signal and chrominance signal separating circuit

Details Luminance signal and chrominance signal separating circuit Luminance signal and chrominance signal separating circuit

1992-02-19

1994-11-01

Groody, James J.

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

348665, H04N 978

Patent

active

053611039

ABSTRACT:
The luminance signal-color signal separating circuit obtains signals of three lines by a 1H delaying circuit. Further, by unit delaying circuits, signals at three points are obtained in each line. Thus, signals at nine points continued vertically and horizontally are input into a color signal detecting circuit which determines an oblique correlation of the signals at these nine points to thereby obtain the degree of the color. The color signal detecting circuit obtains a color signal output having had the oblique luminance component removed by the operation of the color signal component from a three-line color separating circuit and the degree of the color.

REFERENCES:
patent: 4851898 (1989-07-01), Asahara
patent: 4980737 (1990-12-01), Umezawa
patent: 5051818 (1991-09-01), Mishima
patent: 5099315 (1992-03-01), Koga et al.
patent: 5146317 (1992-09-01), Ishizu et al.

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