Adaptive noise reduction apparatus using motion detection signal

Details Adaptive noise reduction apparatus using motion detection signal Adaptive noise reduction apparatus using motion detection signal

1991-12-26

1993-09-21

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, H04N 5213

Patent

active

052473627

ABSTRACT:
A noise reduction apparatus is disclosed which comprises a horizontal motion compensator, a subtractor, a memory, NOR and OR gates, a current frame value altering unit, an adder, and delaying units, thereby greatly enhancing background picture quality of a picture and preventing after-image of a motion picture.

REFERENCES:
patent: 4242704 (1980-12-01), Ito et al.
patent: 4500911 (1985-02-01), Ninomiya et al.
patent: 4658285 (1987-04-01), Lewis, Jr.
patent: 4951137 (1990-08-01), Kisou et al.
patent: 5140424 (1992-08-01), Yoshimura et al.

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