Patent ID: 6606127
Filing Date: 2003-08-12
Classification: H04N

Abstract:
A method of generating a composite video signal from at least two other video signals comprisingproviding an analog video signal; providing a digital video signal; determining a clock phase and a clock frequency of the analog video signal; synchronizing the digital video signal with the analog video signal using the clock phase and a clock frequency of the analog video signal; combining the analog video signal and the digital video signal to generate a composite video signal; and providing the composite video signal according to the clock phase and clock frequency of the analog video signal; wherein synchronizing the digital video signal with the analog video signal comprises: storing the analog video signal; storing the digital video signal; outputting the analog video signal, after storing the analog video signal, according to the clock phase and clock frequency of the analog video signal; and outputting the digital video signal, after storing the digital video signal, according to the clock phase and clock frequency of the analog video signal.