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1、Abstractsystemopenandclose.Thepowercircuit,audio/videoswitchingcircuit,VGAswitchingcircuit,digitalvolumetunecircuit,equipmentpowermanagementcircuitandcommunicationcircuitareincludedinthemaincontrolcircuit.Theoperationsofthesecircuitsareallcontrolledu
2、singCPU.Thissimplemaincontrolcircuitcanswitchtheaudio/videosynchronously,tunethevolumeandcontrolthepowerofdevices.Panelbuttonscanbeusedtocontroloperationofthecontroller,canalsobeequippedwitharandomcontrolsoftware,viaRS-232communication(withcontrolcom
3、puter)tocontrolthecontroller.ThecontrollerhasRS-232inputandoutputinterface,RS-232inputinterfacehaslinkedtocontrolcomputer,usedtocontrolprojector,andRS-232outputinterfacehaslinkedtoprojector.Thisthesisexpatiatetheswitchtechnologyofaudio、videoandVGAsig
4、nalbasedonthetechnologyofmultimedia.ThenthehardwaremodelwithSPCE061ASCMasamajorcontrolchipispresented.Itanalysesthefunctionofeachsoftwaremodule,andexpoundsthemodularizationdesignedthoughtaboutmultimediaconcentratedcontrollerandtheprincipleofthecentra
5、lizedcontrol,andelucidatesexactlythecontrolprincipleofthecontrollingmodule,theswitchbetweenaudioandvideomodule,andthedevicepowermanagementmodule,thenexpresslyintroducesdesigningandimplementofsomeimportanttechnology.Thisthesishadbigenhancementintheque
6、stiontosolvesynchronizationoftheswitchbetweenaudioandvideosignal.Intheend,themultimediaconcentratedcontrollerisverygoodinfunctionandapplication.Itmakesdevelopprojectmorerapidandmakesmodifyhardwarecircuitmoreeasy.Socombinedwithuseofsoftware,thecontrol
7、lerisappliedformultimediacontroldeviceorotherfront-endequipmentinvideomonitor.Multimediaconcentratedcontrolleristhemostup-to-datescienceandtechnologyconnectingwithelectronictechnologyandnettechnology.Itcancontrolalloftheequipments.Thetypicalcharacter
8、isticisthatoperationalprocessbecomeofsimpleness,andcaneasilyuseit,avoidmisuseanddamagedequipmentprematurely.Keywords:multimedia,centralizedcontroller,remotecontrol,anti-jammingtechnology.AbstractAbstractToday,scienceandtechnologyisswiftlydevelop,thee
