Television – Image signal processing circuitry specific to television – Transition or edge sharpeners
Reexamination Certificate
2004-12-09
2008-03-18
Hsia, Sherrie (Department: 2622)
Television
Image signal processing circuitry specific to television
Transition or edge sharpeners
C348S606000
Reexamination Certificate
active
07345711
ABSTRACT:
A video signal improving circuit comprises an input section which receives a video signal; a delay circuit which delays the video signal to generate a plurality of delayed video signals which have delayed times different from one another; an improving signal producing circuit which generates, as an improving signal, an improving amount for performing a transient improvement on the video signal based upon an original video signal before delay and the plurality of delayed video signals; a band-limiting filter which performs a frequency band limitation on the improving signal; a timing correcting circuit which causes timings of any one of the plurality of delayed video signals and the improving signal which has passed through the band-limiting filter to match with each other; and an adder which adds the improving signal which has passed through the band-limiting filter to the delayed video signal which has passed through the timing correcting circuit.
REFERENCES:
patent: 5146319 (1992-09-01), Engel et al.
patent: 5469225 (1995-11-01), Hong
patent: 5920357 (1999-07-01), Ohara
patent: 5959693 (1999-09-01), Wu et al.
patent: 6650792 (2003-11-01), Aida et al.
patent: 2-4367 (1990-01-01), None
patent: 4-38077 (1992-02-01), None
patent: 10-150582 (1998-06-01), None
LandOfFree
Video signal improving circuit 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 improving circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal improving circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3976728