Patent ID: 8588311
Filing Date: 2013-11-19
Classification: H04H

Abstract:
1. A method for identifying a digital video signal in a video system, comprising the steps of: phase modulating an incoming digital video signal with an identification signal at an input of the video system to identify the digital video signal, wherein the video system is a cross-point matrix, wherein the frequency of the identification signal lies above a passband of a loop filter in an output of an equalizer and re-clocking circuit and the frequency of the identification signal is chosen so as not to be an integer sub-multiple of the serial digital video rate, and further wherein the phase modulation is set so that a combined total of the phase modulation and jitter from other sources is less than a predetermined percentage of a unit interval for the serial digital video rate; and demodulating the phase modulated digital video signal at an output of the video system to yield the identity of the digital video signal.