Synchronizing signal generator device for television

Details Synchronizing signal generator device for television Synchronizing signal generator device for television

1980-04-16

1982-05-04

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358150, H04N 946, H04N 506

Patent

active

043285139

ABSTRACT:
A synchronizing signal generator device for television includes an oscillator circuit which generates a color subcarrier signal, a voltage-controlled oscillator circuit which includes a counter and whose oscillation frequency is controlled by the output signal of the first-mentioned oscillator circuit, a counter which receives an output of the voltage-controlled oscillator circuit, and a decoder which receives an output of the second-mentioned counter. The decoder provides a synchronizing signal for the NTSC, PAL or SECAM format in such a manner that the count numbers of the respective counters are controlled. The synchronizing signal generator device for television also includes various circuits for receiving external synchronizing signals. As a result, the synchronizing signal generator device for television can be synchronized with another synchronizing signal generator device for television.

REFERENCES:
patent: 4038683 (1977-07-01), Thorpe et al.

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