Jam-resistant TV system

Details Jam-resistant TV system Jam-resistant TV system

1979-05-03

1982-06-01

Buczinski, S. C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358122, 358123, 358148, 358153, 358259, H04N 716

Patent

active

043331076

ABSTRACT:
A jam-resistant TV transmission system including means to transmit a composite video signal in which each vertical sync pulse is replaced by several increasingly-delayed symbols from a pseudo-random number generator. Receiver means includes a correlator which produces a correlation pulse on receipt of a predetermined one of the symbols. The timing of the correlation pulse and the known delay of the predetermined symbol are used to generate reconstituted vertical sync pulses.

REFERENCES:
patent: 3780213 (1973-11-01), Harna
patent: 3916406 (1975-10-01), Miller et al.
patent: 4075660 (1978-02-01), Horowitz
patent: 4091423 (1978-05-01), Branscome

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