基于CSCW的多媒體協(xié)同支持平臺研究.pdf

1、天津大學(xué)碩士學(xué)位論文基于CSCW的多媒體協(xié)同支持平臺研究姓名：何光明申請學(xué)位級別：碩士專業(yè)：計算機系統(tǒng)結(jié)構(gòu)指導(dǎo)教師：何丕廉20030101ABSTRACTCSCWanewlystudyhotspotfocusesondistributedvirtualenvironments，mainlyinvestigatesconcurrencycontr01strategyandworkplatformforcollaboratorstocomp

2、letesometasktogetherAnditissuretobewidelyappliedinmanyfieldssuchasdistanceeducation，videoconference，distancemedicine，networkinggamesandsoonTheresearchoftletaskistostudythekemellayerofthearchitectureofCSCW：CollaborativeSu

3、pportingPlatfornl，includingcooperativestrategiesandsupportingtoolsTheresultingCSCWapplicativesystem，NetworkingVirtualClassroom，isprovidedorientedtonetworkingdistanceeducationbycutting，rearrangingthesetoolsandcombingthese

4、strategiesFirst，thisarticledescribesCSCWrelatedinformation，developingbackground，architecture，keytechnologiesandrealizationofthesementionedintheresultingsystem，suchtechnologiesascollaborativemodel、awarenessandconcurrencyc

5、ontr01strategySecond，therealizationandkeytechnologyofthetwointeractivetools，dataandmultimediaformatoftheMultimediaCollaborativeSupportingPlatfoiTn，arediscussedindetailBesides，thearticleprovidestheflmctionandrealizationme

6、thodofthesedatainteractivetools、theCobrowerandSharedElectricWhiteboardorientedtoeducationapplicationWhiteboardadoptingCSCWtheoryprovidesawarenesscomponent，telepointegandconcurrencycontrolstrategybasedoncreatorandrole，whi

7、chnotonlyembodimentsteachers’roleofconstructing，butacceleratesthespeedofinformationfeedbackandcirculationinthesystemandalleviatesloadofserverthroughlayeredconcurrencecontrolstrategyInaddition，whiteboardcansupport0LEobjec

8、t，makingitpossibletotackleorcontainsuchcomplexobjectsasmathematicchemicalequationsandpaintbrusht001Astomultimediainteractivetool，thisarticledescribestheprocessofmultimediacollectionbyVF、ⅣMPEG一4encodingarithmerle，RTPrealt

9、imetransportationmechanism，IPmulticasttheorymulticasttunnelingarithmeticalandfunctionsofsoftyMCU(MultipointContro】u伍t)likeaudiomixingandswitchofmultivideostreamtheseareanalyzedindetailAndtwoaudioenhancementarithmetic，dyn

10、amiticnorinalizationscalingforeliminatingove胡owduringaudiomixingandfrequencysubtractionforeliminatingnoise，aredescribeddetailedandsimplyrespectivelyFinallythisarticleconcludestechnologiesandprospectsapplicationofthisplat