Dynamic digital video correction circuit

Details Dynamic digital video correction circuit Dynamic digital video correction circuit

1985-12-12

1987-06-09

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358163, 340793, 340812, H04N 5235, H04N 557

Patent

active

046724516

ABSTRACT:
A video compensation circuit for compensating the displayed intensity of isolated pixels is disclosed. The video compensation circuit includes a shift register (20) having a plurality of stages (11,13,15) for storing and shifting a serially input digital video signal (DV) and for outputting an output digital video signal (DDV), detection circuitry (17) responsive to the respective outputs of the shift register stages for providing a detection output indicative of the presence of a predetermined sequence of digital video data in the shift register stages, and synchronizing circuitry (19) coupled to the detection circuit for providing in response to the detection output a control signal (DCS) synchronized to the bit of the output digital video signal which corresponds to the pixel to be compensated.

REFERENCES:
patent: 4150365 (1979-04-01), Natori et al.
patent: 4173758 (1979-11-01), Sekine
patent: 4212008 (1980-07-01), Hopkins, Jr.
patent: 4371268 (1983-02-01), Miyasaka et al.
patent: 4393378 (1983-07-01), Danielsen et al.
patent: 4517560 (1985-05-01), Murayama et al.

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