Television – Image signal processing circuitry specific to television – Chrominance-luminance signal separation
Reexamination Certificate
2005-10-18
2005-10-18
Natnael, Paulos M. (Department: 2614)
Television
Image signal processing circuitry specific to television
Chrominance-luminance signal separation
Reexamination Certificate
active
06956620
ABSTRACT:
An apparatus for separating luminance and chrominance signals from an NTSC composite video signal includes first through fourth delayers connected to a digital composite video signal in series for delaying input signals each by 1, a first filter for separating a first chrominance signal from signals output from the first and second delayers; a second filter for separating a second chrominance signal from signals output from the second and third delayers, a vertical edge direction detector for detecting a vertical edge direction by receiving signals output from the second and fourth delayers and receiving the digital composite video signal, a multiplexer for outputting one of the first and second chrominance signals based on a signal output from the vertical edge direction, a chrominance signal outputting unit for receiving the output of the multiplexer and then outputting a perfect chrominance signal, and a luminance signal outputting unit for receiving the signal of the second delayer and receiving the chrominance signal and then outputting a perfect luminance signal. Using the apparatus, cross-luminance and cross-chrominance can be substantially eliminated from the chrominance and luminance signals.
REFERENCES:
patent: 4641180 (1987-02-01), Richter
patent: 4707732 (1987-11-01), Matono et al.
patent: 4855815 (1989-08-01), Yasuki et al.
patent: 5029001 (1991-07-01), Tanaka et al.
patent: 5091783 (1992-02-01), Miyaguchi
patent: 5134467 (1992-07-01), Kim
patent: 5155583 (1992-10-01), Yoshimura et al.
patent: 5345276 (1994-09-01), Hong
patent: 5355176 (1994-10-01), Inagaki et al.
patent: 5475445 (1995-12-01), Yamaguchi et al.
patent: 5654770 (1997-08-01), Hatano et al.
patent: 5686972 (1997-11-01), Kim
patent: 5909255 (1999-06-01), Hatano
patent: 6738097 (2004-05-01), Satoh
patent: WO 97/39589 (1997-10-01), None
Mills & Onello LLP
Natnael Paulos M.
Samsung Electronics Co,. Ltd.
LandOfFree
Apparatus for separating a luminance signal and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for separating a luminance signal and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for separating a luminance signal and a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3435870