Video clock generator for multiple video formats

Details Video clock generator for multiple video formats Video clock generator for multiple video formats

2008-04-14

2011-11-15

Yenke, Brian (Department: 2422)

Television

Synchronization

Automatic phase or frequency control

C348S547000, C348S537000, C348S540000, C348S552000, C345S519000, C345S001100

Reexamination Certificate

active

08059200

ABSTRACT:
An integrated video clock signal generator in which a master phase-locked loop (PLL) control circuit uses an off-chip voltage-controlled oscillator (VCO) to produce an on-chip oscillator signal in synchronization with a horizontal reference signal related to a horizontal video synchronization signal. This on-chip oscillator signal drives one or more slave PLL circuits which provide respective one or more on-chip PLL signals synchronized with the on-chip oscillator signal. In accordance with a preferred embodiment, each on-chip PLL signal is a pixel clock signal with a plurality of clock signal pulses which is synchronized with a vertical reference signal related to a vertical video synchronization signal.

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