Aperture correction circuit

Details Aperture correction circuit Aperture correction circuit

1988-03-22

1989-08-08

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 37, H04N 514

Patent

active

048558290

ABSTRACT:
An aperture correction circuit that adds an aperture correction signal formed from an input video signal to the input video signal, wherein the aperture correction signal is processed by a non-linear processing and then added to the input video signal to thereby effect the aperture correction for a picture of low or high contrast.

REFERENCES:
patent: 4621290 (1986-11-01), Fling
patent: 4668988 (1987-05-01), Sasaki et al.

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