Patent ID: 6414960
Filing Date: 2002-07-02
Classification: H04L,H04N,H04Q

Abstract:
In a network providing high bandwidth, broadcast quality video (V) and audio (A), apparatus for measuring the skew between the video and audio signal comprising:means for transmitting the A/V signal via an ATM network to a distant end; means including an A/V synchronous test signal generator sender for non-intrusively injecting video and audio markers into the transmitted video and audio signals; means for routing the audio and video signals into a switch for encoding and transmission via the ATM to the distant end; means at the distant end for decoding and routing the analog and video signal; A/V synchronous test signal generator receiver for receiving the analog and video signal and detecting the audio and video markers; and means for calculating the A/V skew from the detected audio and video markers.