中數(shù)傳媒節(jié)目平臺兩級系統(tǒng)的設(shè)計及實現(xiàn).pdf

1、天津大學碩士學位論文中數(shù)傳媒節(jié)目平臺中數(shù)傳媒節(jié)目平臺兩級兩級系統(tǒng)的設(shè)計及實現(xiàn)系統(tǒng)的設(shè)計及實現(xiàn)DesignImplementationOfTheTwoTieredSystemFChinaDTVMediaProgramPlatfm學科專業(yè)：軟件工程研究生：于超指導(dǎo)教師：張亞平副教授企業(yè)導(dǎo)師：李國勇高級工程師天津大學軟件學院二零一三年十一月ABSTRACTABSTRACTWiththerapiddevelopmentofdigitaltele

2、visioninrecentyearsthecontentofTVprogramhasbecomeincreasinglyabundantthefunctionshavealsobecomemepowerfulthanbefe.DTVischanginghuman’slifestylegradually.CDM(ChinaDigitalMedia)ProgramPlatfmwasinvestedbyCCTVauthizedbytheSt

3、ateAdministrationofradiofilmtelevision.ThisPlatfmistheintegratedoperationcenterfPayTVinChinawhichmainlycontainsintegrationencryptionuseradministration.NowthebusinessofCDMhascoveredthewholecountry.Howeverbecausethelocalpr

4、ogramplatfmadoptsdifferenttechnologiestoencryptdecryptthetransmissionitisdifficultfCDMtoaccesstheprogramadministrateterminaluserssoastotheycouldnotgettheexactlydatafromusers.Duetothisconcernbasedonthepremisethattheiginal

5、securesystemcanbeguaranteedupgradedthesystemtoatwotieredsystembecausethiscontributestheeffectofreceptionequaljointmanagement.Theadvantagesofgingaccuracyauthizedindependenthouseholdcontrollablecanbeachievedfinally.CDMprog

6、ramplatfmmainlycontainstwopartsasbelowwhichisalsothemainpointsofthisthesis:1、ConditionalAccessSystem(CAS)CDMincreasedtwotieredCAmodulebasedoniginalfourCASs.ThetwotieredCAsystemrefersthatCDMlocalprogramplatfmsadoptthesame

7、CASimplementtwiceencryptiondecryptionsetauthizeICcardsasaresultofreceptionequaljointmanagement.2、SubscribersManagementSystem(SMS)SMSismainlyresponsiblefthebusinessrequestofprocessingauthizationuser’sinfmationstagederinfm

8、ation.TwotieredsystemmoduleoneofthemajtechnologiesisthetwotieredusermanagementsystemwhichsatisfiestherequirementimplementationofCDMoperationpattern.Twotieredsystemisonesophisticatedsystemengineeringwithvarioustechnologie