DigitalVideoandDSP-2008forKeithJackAlthoughtherearemanyvariationsandimplementationtechniques,videosignalsarejustawayoftransferringvisualinformationfromonepointtoanother.TheinformationmaybefromaVCR,DVDplayer,achannelonthelocalbroadcast,cabletelevision,orsatellitesystem,theInternet,