Patent ID: 7071996

Claim:
A video synchronizing device, wherein the video synchronizing device is operable to synchronize a first video signal having a first video format and a second video signal having a second video format, both video signals having the same frame rate, the video synchronizing device comprising: a genlock signal input terminal operable to receive a genlock signal from the first video signal, and propagate a stripped genlock signal of a first frequency; a first phase-locked loop circuit operable to receive at least a part of the stripped genlock signal and produce an intermediate signal of an intermediate frequency; and a second phase-locked loop circuit operable to receive the intermediate signal and produce a final signal of a final frequency; wherein the first video signal is synchronized with video frame timing of the second video signal; and wherein one or more of the first-phase locked loop and the second phase locked loop are operable to adjust the phase of the intermediate signal with respect to the genlock signal.