Television synchronizing apparatus

Details Television synchronizing apparatus Television synchronizing apparatus

1985-04-01

1987-01-27

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358158, 328 63, H04N 506

Patent

active

046397809

ABSTRACT:
In a synchronized digital horizontal deflection system generating at 2xf.sub.H, a first word is produced that is indicative of the length of one-half the period H between f.sub.H rate horizontal sync pulses. A first f.sub.H rate signal that is synchronized to the horizontal sync pulses is generated. The first f.sub.H rate signal is time shifted by one-half of the period H, in accordance with the first word to produce a second f.sub.H rate second signal. The first and second signals are multiplexed for generating a horizontal deflection control signal at 2xf.sub.H rate that controls the retrace interval timing in a deflection circuit output stage.

REFERENCES:
patent: 3899635 (1975-08-01), Steckler et al.
patent: 4166250 (1979-08-01), Meki et al.
patent: 4317133 (1982-02-01), Fernsler et al.
patent: 4327376 (1982-04-01), Balaban et al.
patent: 4351001 (1982-09-01), McGinn et al.
patent: 4467359 (1984-08-01), Hosoya
patent: 4476490 (1984-10-01), Kaneko
patent: 4518995 (1985-05-01), Harsbarger et al.
Development sample data sheet for MAA 2500 (DPU), pp. 109-127, of DIGIT 2000 Digital TV System, edition 1983/9.

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