Video synchronization circuit comprising a PLL with a circuit to

Details Video synchronization circuit comprising a PLL with a circuit to Video synchronization circuit comprising a PLL with a circuit to

1995-07-07

1997-05-06

Lee, Michael H.

Television

Synchronization

Automatic phase or frequency control

348521, H04N 504

Patent

active

056275960

ABSTRACT:
A video system pulse generating circuit has the frequency of the video system pulse being an integral multiple of a video synchronizing signal, and being synchronized with video synchronizing signal. The video system pulse generating circuit includes a phase locked loop circuit, a dividing circuit, and a synchronizing range determining circuit, wherein an asynchronous oscillator such as a quartz oscillator is not required.

REFERENCES:
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patent: 5359297 (1994-10-01), Hodel et al.
patent: 5410572 (1995-04-01), Yoshida
patent: 5502502 (1996-03-01), Gaskill et al.

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