Patent ID: 8810659
Filing Date: 2014-08-19
Classification: H04N,H04S

Abstract:
1. A method of tracking an audio or video signal having an active portion which signal is selected from a plurality of signals for at least its active portion to be passed through a first processing circuitry in a television system, said method including the steps of: a) In response to artifacts already present in the active portion of an electronic first input signal which is input to a first processing circuit, associating a plurality of first input delay trackers with said first input signal, each said first input delay tracker corresponding to at least one said artifact of said first input signal; b) in response to artifacts in a first output signal from said first processing circuit, associating a plurality of first output delay trackers with said first output signal, each said first output delay tracker corresponding to at least one said artifact of said first output signal; c) in response to a plurality of said first input delay trackers and a plurality of said first output delay trackers, determining if a version of said first input signal is being output from said first processing circuit as said first output signal.