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1、ACORBA-BasedDistributedMultimediaSystemTae-HyoungYun,Ji-YoungKongandJamesW.HongDept.ofComputerScienceandEngineeringPohangUniversityofScienceandTechnologySan31,Hyoja-Dong,Pohang,790-784,KOREATEL:+82-562-279-2244FAX:+82-562-279-5699fthyun,konga,jwkhongg@nile.postech.ac.krAbstractdiaapplicationscanb
2、edevelopedeasily.Further,inordertoensurereliableandefficientoperationsofthesemulti-Ashigh-speed,broadbandnetworksreplaceslower,mediaapplications,theymustbemanaged.Thisrequiresnarrowbandnetworks,multimediaapplicationsaremoresystemssupportformonitoringandcontrollingapplicationswidelyusedtodaythanever
3、before.Distributedmultime-thatmustbemanaged[8,10,12].diaapplicationsare,however,verydifficulttodevelopandTomakeiteasiertodevelop,operateandmanagemulti-manage.Thisismainlyduetothelackofappropriatesup-mediaapplications,wehavedevelopedadistributedmulti-portinconventionaloperatingsystems.Inordertosolve
4、mediasystemcalledMAESTRO.Anumberofmultimediathisproblem,wehavedevelopedanobject-orienteddis-systemshavebeendevelopeduptodate,butmostofthesetributedmultimediasystemcalledMAESTRO.MAESTROsystemshavebeendevelopedforspecificmultimediaappli-providesdistributedmultimediaserviceswhichcansup-cationsoronspec
5、ificenvironments[1,2,5,6,7,15].MAE-portawidevarietyofmultimediaapplications.Thispa-STROhasbeendesignedtosupportawidevarietyofmulti-perpresentsthedesignarchitectureofMAESTRO,partic-mediaapplications(suchasvideoconferencing,video-on-ularlyfocusingonitsmultimediacommunicationandses-demand,whiteboards,
6、telemedicine,etc.)thatcanoper-sionservices.Wehavedesignedmultimediaservicesus-ateindistributedenvironmentsinmind.MAESTROpro-ingtheobject-orientedapproach.AprototypeMAESTROvidesageneralmultimediaapplicationprogramminginter-distributedmultimediasystemhasbeenimplementedus-face(API)thatcanbeusedfordev
7、eloping,operatingandingaCORBAdistributedplatform.Asaproofofconcept,managingvariousmultimediaapplications.weshowhowdistributedvideo/audioconferencingappli-TheheartofMAESTROliesasetofmultimediaservicescationscanbee