Television – Image signal processing circuitry specific to television – Combined noise reduction and transition sharpening
Reexamination Certificate
2006-02-27
2010-12-14
Kostak, Victor (Department: 2622)
Television
Image signal processing circuitry specific to television
Combined noise reduction and transition sharpening
C348S616000, C348S625000, C348S701000
Reexamination Certificate
active
07852412
ABSTRACT:
Circuits, methods, and apparatus for measuring a video signal's noise level. The determination can be made based on pixel values for a single video image frame, for example, by comparing pixel color values, luminance, or other parameter for a first and second group of pixels in the frame. Each group of pixels may be part of a line in the frame, and several such measurements may be made along each line of the frame. These measurements can then be further refined depending on the measure noise level. Once a video noise level is determined, a decision on how to further process the video signal can be made. For example, the picture can be filtered or sharpened. The amount of noise filtering can be made dependent on the amount of noise measured.
REFERENCES:
patent: 4242704 (1980-12-01), Ito et al.
patent: 5200824 (1993-04-01), Kageyama
patent: 5757977 (1998-05-01), Mancuso et al.
patent: 5892550 (1999-04-01), Iwasaki et al.
patent: 5931934 (1999-08-01), Li et al.
patent: 2001/0048485 (2001-12-01), Ueyama
patent: 2003/0052979 (2003-03-01), Soga et al.
patent: 2003/0206591 (2003-11-01), Yang et al.
patent: 2005/0013486 (2005-01-01), Wiedemann et al.
patent: 2008/0266307 (2008-10-01), Hofman et al.
Guerrero Miguel A.
Lew Stephen D.
Slavenburg Gerrit A.
Kostak Victor
NVIDIA Corporation
Townsend and Townsend / and Crew LLP
LandOfFree
Video noise level detection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video noise level detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video noise level detection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4166162