Patent ID: 7463256

Claim:
A system for displaying video signals, the system comprising: a controller that monitors a pulse rate value and a polarity value of at least one of a vertical synchronization signal and a horizontal synchronization signal associated with a video signal, compares previous pulse rate and polarity values with current pulse rate and polarity values to detect a change in pulse rate and polarity values, and provides a phase adjustment signal in response to detecting a change in the pulse rate and polarity values, wherein the phase adjustment signal comprises a signal for delaying sampling of the video signal so that video signal is sampled at a time when a reliable signal can be obtained; a table of phase adjustment signals coupled to the controller, wherein the table cross references phase adjustment signals with pulse rate and polarity values, and the phase adjustment signal provided by the controller is taken from the table of phase adjustment signals; an analog-to-digital converter that receives the video signal and uses the phase adjustment signal to convert the video signal to a digital signal; and a display that receives the digital signal and displays images represented therein.