Method of reducing and magnifying picture size of a video compos

Details Method of reducing and magnifying picture size of a video compos Method of reducing and magnifying picture size of a video compos

1996-03-19

1997-12-30

Hsia, Sherrie

Television

Image signal processing circuitry specific to television

Selective image modification

348562, 348582, H04N 974, H04N 964

Patent

active

057036594

ABSTRACT:
A method is provided for reducing or magnifying the picture size of a video composite signal with the use of fewer memories than a conventional video composite signal processor which processes pixel data after being converted into R, G, B signals. A video composite signal is directly converted into digital data and sampled with a sampling frequency of four times the color sub-carrier and stored in a pair of field buffers to be processed for picture size reduction or magnification. The digital data are reduced or multiplied in units of pairs of data with a phase difference of .pi./2. Color information is reproduced from corresponding two pairs of data of two adjacent fields having a phase difference of .pi..

REFERENCES:
patent: 4689660 (1987-08-01), Kashigi
patent: 5065230 (1991-11-01), Kumano
patent: 5396298 (1995-03-01), Hosokawa

Affiliated with

Also associated with

Rating

Method of reducing and magnifying picture size of a video compos does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of reducing and magnifying picture size of a video compos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of reducing and magnifying picture size of a video compos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-207469