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City Cork / / Company Figure / Australian Broadcasting Co. / CNN / TiVo / AT&T Labs / ABC / Comcast / PRISM / MPEG-2 PRISM / Merwe / AT&T Labs / / Country United States / Ireland / / / Event FDA Phase / / Facility University of California at Berkeley / ABC station WABC / DirectTV ABC station WABC / ABC station / University College Cork Cork / / IndustryTerm personal computer systems / Web-based program guide / streaming media / streaming software / request redirection solution / remote portal / portal startup / content discovery solution / large media objects / large internet caches / media player / consumer equipment / prototype software / search capability / content distribution networks / streaming content distribution networks / content management solutions / cooperative caching systems / broadband access networks / satellite / redirection portal / request-response protocol / friendly Web interface / broadcast media / Web Server Backbone / network distributor / static solution / origin server / content-aware search engines / Web content / content management / public Internet / Web browsers / wide area networks / office automation type applications / compliant streaming software / redirection systems / portal network / Web interface / portal infrastructure / Internet Multicast Architecture / content management systems / Web service model / appropriate portal / streaming content distribution network / streaming services / real broadband access network / broadband access technologies / portal software / content-based streaming services / television broadcasting technologies / / OperatingSystem FreeBSD / / Organization University of California / Mapping Service / Infrastructure Service / Hierarchical Mapping Service / / Person Backbone Figure / David Gibbon / Larry Ruedisueli / / Position content manager / policy Content Manager / Manager Portal Intradomain Portal Portal Portal Intradomain Portal Portal Portal Portal UPDATE REPORT Figure / Player / Manager Content Discovery content location Redirector name / Contact author / policy Inter-domain Master Content Manager Content Manager Delegated Content Manager / specified content manager / manager / start player / / Product abc / / ProgrammingLanguage XML / / ProvinceOrState California / / RadioStation WABC / / Technology television broadcasting technologies / XML / MPEG-2 / broadband access technologies / Real Time Streaming Protocol / Extensible Markup Language / Quality of Service / html / Content Management / Uniform Resource Name / indexing technology / request-response protocol / RTSP protocol / UMP protocol / streaming video / Streaming Media / digital video / Operating Systems / broadband access / DSL / DNS / content management system / discovery protocols / http / caching / 3.2 URI Mapping Protocol / / URL www.w3.org/XML / www.icravetv.com / www.freebsd.org / www.recordtv.com / http / SocialTag 
1 PRISM Architecture: Supporting Enhanced Streaming Services in a Content Distribution Network C. D. Cranor, M. Green, C. Kalmanek, D. Shur, S. Sibal, C. Sreenan‡ and J.E. van der Merwe∗