數(shù)字電視實時系統(tǒng)研究與用戶接口模塊實現(xiàn).pdf

1、焉量大季碩士學位論文數(shù)字電視實時系統(tǒng)研究與用戶接口模塊實現(xiàn)盂曉苛指導教卿學科專業(yè)名稱鹼史撮盎目期論走罄辯日期罄辮妻自務主席量墨煎墅基堡讓氧甑撻掛皇塑監(jiān)———————一墊鰱生韭L——————————一墊墅曼生生生坦——————————一直墮量—墼撞——————————一＼ResearchontheReal—TimeSystemofDigitalTelevisionandImplementationoftheUserInterfaceMod

2、uleAbstractThetechnologyof謝每taltelevisionmakesthedi舀talsocietytobepossibleSothetechnologyofdigitaltelevisionwasthedevelopmentdirection，whileitisalsothetypicalapplicationoftheembeddedsysteminbroadcastfieldInourcountryther

3、esearchesofdigitaltechnologyStartlaterthanoverseascountryAndfollowing。lherequestofthemarketdomesticresearchesfocusontheapplicationmoduleofdi酊taltelevision，suchastheconditionalaccesssystemTherefore，itisnecessarytesearchon

4、realtimesystemofdigitaltelevisionThereisnooperatingsystemintraditionaltelevisionwhichusecontrolcommandstomanagesystemThedigitaltelevisionhasmorefunctionsandtasks，soitneedstherealtimesystemtocontr01Thedigitaltelevisionsys

5、temhandlesrefreshingthescreen，updatingtheprogramandrespondingthekeypadevent，andsoonSothispaperusesthemicrokerneltocontrolsystem，whichtakesthenecessarypartofrealtimeoperatingsystemasitskernelandaccordingthecharactersofdig

6、italtelevisiontomodifyitskernelAtthepresenttimethereisnounionizedstandardindigitaltelevisionf：ieldinourcountrywhichmakesthedifferentdigitaltelevisionhavedifferentsystemsTherefore，theportabilityofdigitaltelevisionsystemne

7、edstobeimprovedThispaperusesthemethodofembeddedsystemwhichusesthehardwareabstractionlayertose[arate也ehardwareandsoftwareapplicationIfyouwanttochangethehardwaresystemyouneednottomodifytheapplicationlayerBecauseoftheindepe

8、ndencyofsoftware，thispaperusesthemoduleswhichbasedonobjectionandtheyareindependedwithcachotherAttheendofthisPaperweintroducethedesigningoftheuserinteffacemodule，whichhandlethekeypadeventsKeywords：embeddedsystems，realtime