Motion detector for chrominance signal in TV receiver

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358 21R, H04J 964

Patent

active

047362529

ABSTRACT:
A motion detector for a chrominance signal which is used with a TV receiver equipped with a video signal motion detector. This motion detector for a chrominance signal has a delay element for delaying the chrominance signal of a video signal by 1 frame period, a subtractor for subtracting the output signal of the delay element from the input signal thereof, an absolute value conversion circuit to which the output signal from the subtractor is inputted, and a smoother circuit to which the output signal from the absolute value conversion circuit is supplied. If the chrominance signals of video signals on two consecutive frames are the same, the output signal of the subtractor becomes zero. If the chrominance signals of video signals on two consecutive frames are different, the output signal of the substractor takes a positive or negative value. The negative value signal is converted into a positive value signal by the absolute value conversion circuit. A signal is outputted from the smoother circuit only when the chrominance signals of video signals on two consecutive frames are different. This outputted signal is a chrominance signal motion detection signal. The luminance signal contained in a video signal is removed from the video signal using a comb-type filter.

REFERENCES:
patent: 4556900 (1985-12-01), Willis
patent: 4626891 (1986-12-01), Achiha
patent: 4639767 (1987-01-01), Suzuki
patent: 4641120 (1987-02-01), Richter
"A Motion-Adaptive High-Definition Converter for NTSC Color Signals", Achida et al., SMPTE Journal, May 1984, pp. 470-476.

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

Motion detector for chrominance signal in TV receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motion detector for chrominance signal in TV receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion detector for chrominance signal in TV receiver will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2236566

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