Reciprocating dropout compensator

Details Reciprocating dropout compensator Reciprocating dropout compensator

1977-08-12

1980-09-02

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358163, 358167, H04N 514

Patent

active

042209714

ABSTRACT:
A compensator for inserting a signal segment into a video signal in substitution for a signal segment that is detected to be impaired is particularly adapted to use with discrete-sample-type video signals as, for example, may be derived using an imager having a grid of elemental imaging areas. Such compensator includes first and second registers that are capable of receiving new data in one mode and reading out data with recirculation thereof in a second mode. In operation, the registers reciprocate from one mode to the other on a scan-line by scan-line basis, but reciprocation is cancelled upon detection of a dropout or other signal impairment. Cancellation of a mode change automatically results in an insertion of recirculated information for a previous scan line.

REFERENCES:
patent: 3699246 (1972-10-01), Hodge
patent: 3825680 (1974-07-01), Verhoeven
patent: 3863022 (1975-01-01), Bruch
patent: 3904818 (1975-09-01), Kovac

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