數(shù)字電視實(shí)時(shí)系統(tǒng)研究與用戶接口模塊實(shí)現(xiàn).pdf

1、焉量大季碩士學(xué)位論文數(shù)字電視實(shí)時(shí)系統(tǒng)研究與用戶接口模塊實(shí)現(xiàn)盂曉苛指導(dǎo)教卿學(xué)科專(zhuān)業(yè)名稱鹼史撮盎目期論走罄辯日期罄辮妻自務(wù)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