Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2008-07-29
2008-07-29
Ometz, David (Department: 2622)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
C348S610000, C348S470000, C348S701000, C375S233000, C382S275000
Reexamination Certificate
active
11116098
ABSTRACT:
An adaptive equalization method and system for reducing noise and distortion in a sampled video signal improves the quality of output video information in both consumer and professional applications. A multi-band equalizer applied to the sampled video information reduces noise and distortion artifacts in the sampled video information. The gains of each of the equalizer bands is adjusted dynamically by control outputs provided by a noise and distortion detector. The noise and distortion detector incorporates circuits for comparing the luminance of each plane on a per-pixel basis with neighboring pixels and also includes a pattern matching comparator that detects edge features by comparing each pixel and its neighbors with a set of predetermined patterns. The noise and distortion detection can be further confirmed by comparing the detection results across multiple frames and the equalizer gain values may be further selected by a result of a video motion type classification.
REFERENCES:
patent: 4652922 (1987-03-01), Ozaki
patent: 5099329 (1992-03-01), Oyama et al.
patent: 5113142 (1992-05-01), Yoshikawa
patent: 5161015 (1992-11-01), Citta et al.
patent: 5519790 (1996-05-01), Manning
patent: 6546149 (2003-04-01), Ruggiero et al.
patent: 6760478 (2004-07-01), Adiletta et al.
patent: 6847682 (2005-01-01), Liang
patent: 6912322 (2005-06-01), Smith et al.
patent: 6975777 (2005-12-01), Kenmochi
patent: 7260377 (2007-08-01), Burns et al.
patent: 2005/0201572 (2005-09-01), Lindahl et al.
Cirrus Logic Inc.
Désir Jean W
Harris Andrew M.
Mitch Harris Atty at Law, LLC
Ometz David
LandOfFree
Adaptive equalization method and system for reducing noise... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive equalization method and system for reducing noise..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive equalization method and system for reducing noise... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3906321