Digital video synchronizer

Details Digital video synchronizer Digital video synchronizer

1976-12-30

1979-01-09

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 4, 360 33, H04N 504, H04N 578

Patent

active

041341317

ABSTRACT:
A television signal synchronizer is provided in which non-synchronous signals are written into memory storage, while previously stored video signals are read-out of the memory storage synchronous with a local reference. A memory control circuit, responsive to the write and read ready signals, prevents the simultaneous reading and writing of the memory storage by generating memory control signals for reading stored video signals out of the memory at a periodic rate synchronous with the read signal, while generating write-into memory control signals at a non-periodic rate determined by the same read signal.

REFERENCES:
patent: 3909839 (1975-09-01), Inaba et al.
patent: 4007486 (1977-02-01), Inaba et al.
patent: 4018990 (1977-04-01), Long et al.

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