Video signal processing circuit and method for converting...

Television – Format conversion – Changing number of lines for standard conversion

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C348S556000, C348S558000

Reexamination Certificate

active

11093567

ABSTRACT:
A double-rate signal achieved by subjecting a video signal to double-rate conversion is supplied to a scan line number converter. In the converter, the portion of the effective scan lines of the double-rate signal is written into a frame memory on the basis of a signal achieved by multiplying horizontal and vertical synchronous signals based on the double-rate signal. In the effective scan line section of HDTV signal, the video signal written in the frame memory is read out on the basis of horizontal and vertical reference signals based on the HDTV signal. Out of the effective scan line section of the HDTV signal, a pedestal level signal written in a memory is read out on the basis of the horizontal and vertical reference signals based on the HDTV signal, thereby achieving HDTV signal whose vertical scan line number is equal to 1125 lines. Accordingly, the HDTV signal suffers no degradation because the video signal in the section of 960 effective scan lines of the double-rate signal is not interpolated.

REFERENCES:
patent: 4673981 (1987-06-01), Lippman et al.
patent: 5168362 (1992-12-01), Yoshida et al.
patent: 5200840 (1993-04-01), Koike et al.
patent: 5452093 (1995-09-01), Kwak
patent: 5592220 (1997-01-01), Ishii et al.
patent: 5986635 (1999-11-01), Naka et al.
patent: 6522339 (2003-02-01), Orimo et al.
patent: 6525778 (2003-02-01), Suzuki
patent: 6704463 (2004-03-01), Okada et al.
patent: 06-253269 (1994-09-01), None
patent: 08-265666 (1996-10-01), None
patent: 11-168639 (1999-06-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Video signal processing circuit and method for converting... 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 circuit and method for converting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal processing circuit and method for converting... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3780556

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.