Video signal processing apparatus having a noise reduction circu

Details Video signal processing apparatus having a noise reduction circu Video signal processing apparatus having a noise reduction circu

1989-07-14

1991-10-22

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 576

Patent

active

050600788

ABSTRACT:
A video signal processing apparatus which is adapted to a VTR (video tape recorder) and various other video players for processing a video signal so as to reduce noise. A video signal passed through a demodulator and a deemphasis circuit is input to a noise canceller circuit so as to remove most of the noise component thereof. The video signal is then provided with narrow and deep peaks at the respective rising transient portion and the breaking transient portion with bipolarity by an outline emphasizing circuit. Thus, smooth signal processing of the group delay characteristic is enabled in a wide frequency band, thereby producing a video signal having excellent sharpness and not including a strain such as overshoot or ringing.

REFERENCES:
patent: 3424861 (1969-01-01), Delvaux
patent: 3723638 (1973-03-01), Fujita
patent: 4384306 (1983-05-01), Liu
patent: 4402006 (1983-08-01), Karlock
patent: 4520396 (1985-05-01), Dischert et al.
Great Britain Patent Application GB-A-2206012 to Nakata et al., dated Jun. 8, 1988.
Great Britain Patent Application GB 2 200 508 A to Waldron et al., dated Nov. 2, 1987.
Great Britain Patent Application 2 157 528 A to Hirota et al., dated Mar. 21, 1985.
Great Britain Patent Application GB-A-2122547 to Tsunoda et al.
Great Britain Patent Application GB 2104 338 A to Hirota, dated Jun. 21, 1982.
Great Britain Patent Application GB 2 098 825 A to Esser et al., dated Apr. 8, 1982.
European Patent Application 260 913 to Hidetoshi.
European Patent Application 167 387 to Haruo.

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