Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1993-06-09
1994-03-15
Powell, Mark R.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348533, H04N 1700, H04N 964, H04N 5213, H04N 508
Patent
active
052949796
ABSTRACT:
Noise estimation circuitry for estimating the noise in a small number of horizontal scanning lines of a video signal includes a lowpass line comb filter responding to said video signal, but not to chrominance-descriptive components thereof. The video signal free from chrominance-descriptive components is repeatedly sampled during the backporch interval of each horizontal scanning line, and the samples are accumulated to generate a revised noise estimate each successive horizontal scanning line.
REFERENCES:
patent: 4496978 (1985-01-01), Sakamoto et al.
patent: 4581641 (1986-04-01), Turner
patent: 4684989 (1987-08-01), Roeder et al.
patent: 4873574 (1989-10-01), Darby
patent: 4970594 (1990-11-01), Kitaura et al.
patent: 5032915 (1991-07-01), Ichimura
patent: 5113262 (1992-05-01), Strolle et al.
Altman Ted N.
Patel Chandrakant B.
Weckenbrock Hermann J.
Wedam Werner F.
Bushnell Robert E.
Miller John W.
Powell Mark R.
Samsung Electronics Co,. Ltd.
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