Synchronous circuit

Details Synchronous circuit Synchronous circuit

1984-03-06

1986-07-08

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358149, H04N 504

Patent

active

045996490

ABSTRACT:
A synchronous circuit useful for video games and the like is employed to coincide an external video signal in synchronization with an internally-generated video signal. The external signal may be produced by a laser disc playing device, or by other devices. The synchronous circuit reduces the time period for synchronization and eliminates jitter on the external synchronizing signal. A flip-flop circuit element is employed, together with a horizontal synchronizing signal counter having a cycle period somewhat smaller than that of an external horizontal synchronizing signal. The flip-flop circuit element is connected at one input terminal to an output stage of a counter output through a reset line.

REFERENCES:
patent: 4517587 (1985-05-01), Aizawa et al.

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