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1、中國科學技術大學碩士學位論文網絡視頻數據庫系統(tǒng)設計方法研究姓名:沈勇申請學位級別:碩士專業(yè):電路與系統(tǒng)指導教師:程義民2000.5.1AbstractWiththecomingoffuformationErainformationresourcehasbeenmoreandmoreimportantintheconstructionofnationaleconomicsandnationaldefenseAmongwhich,themo

2、stsymbolized,visualinformation,hasbeenwidelyusedinnationaleconomy,nationaldefense,scienceresearch,entertainment,etcWiththefastdevelopmentofWorldWideWebandIntemet,thevideodataincreasesrapidly,soitismoreandmoreimportanttos

3、toreandmanagethemsufficientlyandefficientlyinnetworksThus,theresearchworkofnetvideodatabasesystem,hasbeennotonlytheoreticalimportance,butalsowideparticleusesIn80’stheMDBMS(MultimediaDatabaseManagementSystem)alwaysusedist

4、ributedsystemstructureAndwhentimeturninto90’s,Client/ServerStructureisbecomingthecommonstructureofdistributedsystem,andaimportantsignofdistributesystemClient/Serverstructureitselfhasexperiencedthedevelopmentfromthetradit

5、ionalTwotierClient/ServertotheNTierClient/ServerandtoBrowser/ServerthathasmostlyimprovedtheapplicationofkindsofVideoServiceSystems,suchasNetDig“aIVideoLibrary,VideoonDemand,TVConferenceSystem,andsoonSoitbecomesthehotspot

6、oftheresearchworkfordesignmethodoftheNetVideoApplicationSystemBasedonthetechniquesforNetVideoDatabaseSystemsuchasVideoStandard,VideoCompressionandCodingtechnique,VideoTransmissiontechniqueinNetwork,DatabaseTechnique,wean

7、alyzetherequirementofdesignforNetVideoDatabaseSystemindetailAtierthat,Weputforwardaviableproject,whichisforthedesignandrealizationofNetVideoDatabaseSysteminIntcruet/IntranetAccordingtothisscheme,wehavealreadyrealizedanet

8、workvideodatabasesystemandanetworkechocardiogramdatabasesystemallbasedonapplicationcircumstanceofInteFnet,Intranetwithcurrenthardware/softwareplatform;0LEandObjectIdentifyingtechnologyareusedinthelow1eveldatabasetocombin

9、eRDBandOODBsothattheproblemoflow—leveldatabasedatamodeliswellresolved;ByapplyingtheprincipleofTN2VCalgorithm,reversibletransformbetweentreestructurenodeandspecifiedunfixed1engthstringisrealizeditwellresolvetIlequeryprobl

10、emofvideodatabaseVideodataiscompressedandstoredaccordingtoMPEGlstandard,andthetransferandplaybackgobystreamformat,italleviatestheconflictbetweenqualificationofplaybackandthetransmissionspeed;BasedontheregularizationandZe

11、roClient,therequirementofClientiswellsatisfiedNowthesesystemshavebeenverifiedonapersonalcomputerandworksverywellTheresultshows:theprojectfordesignandrealizationhasboththesuitablestructureandtheadvancedidealItcansomehowre

12、solveoralleviatekindsofproblemanddifficultythattheNetVideoDatabaseSystemcanbefaced州miIlthecurrenthardwareandsoftwareconditionsAllthosemoduieofthesystemsuchasdataquery,dataviewsecuritymodule,systemmanagementaregoonwellwor

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