Picture quality adjusting circuit with fir filter for digital pr

Details Picture quality adjusting circuit with fir filter for digital pr Picture quality adjusting circuit with fir filter for digital pr

1989-02-23

1990-04-10

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, H04N 5213, H04N 964

Patent

active

049165429

ABSTRACT:
A circuit for adjusting a picture quality by processing a digital video signal. A digital filter receives the digital video signal and extracts a high-frequency component therefrom. A first waveform-shaping element wave-shapes the high-frequency component to provide a noise cancel signal for canceling the noise. A second waveform-shaping element wave-shapes the high-frequency component to provide a contour compensation signal for compensating a contour of a picture. An adder adds the digital video signal, the noise cancel signal and the contour compensation signal to provide a signal with adjusted picture quality.

REFERENCES:
patent: 4009334 (1977-02-01), Sypula
patent: 4015076 (1977-03-01), Ishiodori
patent: 4573075 (1986-02-01), Bolger
patent: 4691293 (1987-09-01), Conboy
patent: 4695877 (1987-09-01), Matsumoto
patent: 4709269 (1987-11-01), Ozaki
patent: 4823190 (1989-04-01), Yamamoto

Affiliated with

Also associated with

Rating

Picture quality adjusting circuit with fir filter for digital pr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Picture quality adjusting circuit with fir filter for digital pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Picture quality adjusting circuit with fir filter for digital pr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2302921