Adaptive digital aperture compensation and noise cancel circuit

Details Adaptive digital aperture compensation and noise cancel circuit Adaptive digital aperture compensation and noise cancel circuit

1991-09-05

1993-05-25

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358162, 358 36, H04N 5213, H04N 5208

Patent

active

052145107

ABSTRACT:
In multiplying an absolute value of a high frequency component of an input video signal and a gain selected from an aperture compensation gain and a noise cancel gain to carry out the aperture compensation and the noise cancel of the video signal, upper or lower bits of the absolute value are selected dependent on a control selected from the aperture compensation and the noise cancel in accordance with a level of the absolute value and a level of the input video signal. In carrying out the addition and the subtraction between the input video signal and a multiplied value, upper or lower bits of the multiplied value are selected in the same manner as in the above multiplying stage. As a result, a scale of a multiplier can be small.

REFERENCES:
patent: 4855829 (1989-08-01), Kihara
patent: 4918528 (1990-04-01), Oohashi
patent: 4991021 (1991-02-01), Nikoh

Affiliated with

Also associated with

Rating

Adaptive digital aperture compensation and noise cancel circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive digital aperture compensation and noise cancel circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive digital aperture compensation and noise cancel circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-901597