Television – Image signal processing circuitry specific to television – Combined noise reduction and transition sharpening
Reexamination Certificate
2005-06-03
2009-12-15
Natnael, Paulos M (Department: 2622)
Television
Image signal processing circuitry specific to television
Combined noise reduction and transition sharpening
Reexamination Certificate
active
07633556
ABSTRACT:
In a method of removing a noise signal from a video signal and enhancing edge sharpness to improve the video signal definition, a different weight is assigned depending on a characteristic of input pixels. To this end, at least two pixel blocks including the input and at least two adjacent pixels. A pixel difference between the pixels in the each of the pixel blocks is calculated and one of the calculated pixel differences is selected. The input pixel is assigned with a weight corresponding to the selected pixel difference. Accordingly, the definition of the video signal is improved.
REFERENCES:
patent: 4410912 (1983-10-01), Hess et al.
patent: 4549213 (1985-10-01), Illetschko
patent: 4885639 (1989-12-01), Nakata et al.
patent: 5260791 (1993-11-01), Lubin
patent: 5285277 (1994-02-01), Min
patent: 5446501 (1995-08-01), Takemoto et al.
patent: 5602591 (1997-02-01), Saiki
patent: 5638134 (1997-06-01), Kameyama et al.
patent: 6693669 (2004-02-01), Wu et al.
patent: 6757014 (2004-06-01), Kasahara
patent: 2004/0001632 (2004-01-01), Adachi
patent: 2004/0155983 (2004-08-01), Topper
patent: 2005/0168651 (2005-08-01), Morino
patent: 2006/0274618 (2006-12-01), Bourret
patent: 1189652 (1998-08-01), None
patent: 1440192 (2003-09-01), None
patent: 1001371 (2000-05-01), None
patent: 2003-70228 (2003-08-01), None
patent: 2003-94772 (2003-12-01), None
Chinese Office Action dated Jan. 19, 2007 issued in CN 200510076175.1.
Dutch Search Report issued on Jul. 13, 2006 in Dutch 1029195.
Natnael Paulos M
Samsung Electronics Co,. Ltd.
Stanzione & Kim LLP
LandOfFree
Video signal processing apparatus and method to enhance... 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 signal processing apparatus and method to enhance..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal processing apparatus and method to enhance... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4120180