Television cross color suppression and chrominance noise reducti

Details Television cross color suppression and chrominance noise reducti Television cross color suppression and chrominance noise reducti

1992-04-24

1994-04-19

Groody, James J.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

348665, 348713, H04N 964, H04N 977, H04N 978

Patent

active

053051203

ABSTRACT:
Cross color from composite television signals is suppressed by averaging baseband chrominance samples spaced a certain number of frames apart, or when motion is detected in the television signals, by averaging baseband chrominance samples spaced a certain number of lines apart. Cross color suppression when motion is detected may be improved by low-pass filtering the line-spaced chrominance sample average. Both NTSC and PAL implementations are presented.

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patent: 5122876 (1992-06-01), Aoki
patent: 5260775 (1993-11-01), Faroudja

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