Apparatus for detecting noise in a color video signal

Details Apparatus for detecting noise in a color video signal Apparatus for detecting noise in a color video signal

1995-09-15

1998-10-13

Lee, Michael

Television

Synchronization

Automatic phase or frequency control

348505, 348624, 348498, H04N 945, H03L 700

Patent

active

058220119

ABSTRACT:
A phase detector provides angular phase error measurements of the color burst component of a video input signal. Burst phase errors exceeding a given angular threshold are detected and the number occurring within a given period of time are counted. From the accumulated count, a noise indicating signal is derived and applied to a video picture processor for controlling a parameter of displayed images.

REFERENCES:
patent: 4376952 (1983-03-01), Troiano
patent: 4384306 (1983-05-01), Liu
patent: 4430665 (1984-02-01), Cochran
patent: 4684989 (1987-08-01), Roeder et al.
patent: 4860090 (1989-08-01), Murata et al.
patent: 4989073 (1991-01-01), Wagner
patent: 5353066 (1994-10-01), Lee
patent: 5396293 (1995-03-01), Shellard

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