Noise reduction circuit for reducing noise contained in video si

Details Noise reduction circuit for reducing noise contained in video si Noise reduction circuit for reducing noise contained in video si

1995-08-17

1998-02-03

Faile, Andrew

Television

Camera, system and detail

Combined image signal generator and general image signal...

348533, 348607, 348620, H04N 5217, H04N 521, H04N 5213

Patent

active

057150001

ABSTRACT:
A noise reduction circuit for use with video signals or image producing signals in which trailing and other image degrading phenomena are prevented by not using the noise reduction circuit for the edge of the motion picture portion on the image. The noise reduction circuit includes a subtractor 14 which outputs a difference signal E between input video signal VSi and delayed video signal VSd. ROM 18, a look-up table that forms the coefficient multiplier, outputs a corrected difference signal KE corresponding to the difference signal E from subtractor 14. At adder 12, corrected difference signal KE from ROM 18 is added to input video signal VSi, forming output video signal VSo processed by the noise reduction processing. However, when "H" level expansion video signal MEH,Y is output from vertical expansion circuit 42, the outputs of AND gates 24, 26 become null, and the output signal of ROM 18 becomes null.

REFERENCES:
patent: 4485403 (1984-11-01), Illetschko
patent: 4500911 (1985-02-01), Ninomiya
patent: 4636863 (1987-01-01), Kaizaki et al.
patent: 4951137 (1990-08-01), Kisou
patent: 5025316 (1991-06-01), Darby
patent: 5140424 (1992-08-01), Yoshimura et al.
patent: 5161018 (1992-11-01), Matsunaga
patent: 5185664 (1993-02-01), Darby
patent: 5218649 (1993-06-01), Kundu
patent: 5278638 (1994-01-01), Nakada et al.
patent: 5404178 (1995-04-01), Kondo et al.

Affiliated with

Also associated with

Rating

Noise reduction circuit for reducing noise contained in video si does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noise reduction circuit for reducing noise contained in video si, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction circuit for reducing noise contained in video si will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-667025