Method of synchronizing the horizontal deflection of electron be

Details Method of synchronizing the horizontal deflection of electron be Method of synchronizing the horizontal deflection of electron be

1988-02-19

1991-02-12

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358142, 358165, 358147, H04N 709, H04N 324

Patent

active

049928724

ABSTRACT:
A process for synchronizing horizontal deflection of electron beams in television recievers having a reproduced picture with a visible component, when no transmission signals from a television transmitter are present. If an emitted signal is not available, the synchronization is suspended during the time of the visible picture trace, and is activated only during the picture blanking time. For this purpose, the procedure is to switch off a circuit that synchronizes horizontal deflection during the visible component of the reproduced picture. A synchronization circuit is activated only while the picture is being blanked.

REFERENCES:
patent: 3681522 (1972-08-01), Tanabe
patent: 4396873 (1983-08-01), Fernsler
patent: 4611227 (1986-09-01), Brockhurst et al.
patent: 4774439 (1988-09-01), Butterfield
patent: 4849818 (1989-07-01), Hartman et al.

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