Thread View: comp.multimedia
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Started by Jonathan Rosenberg
Thu, 05 Nov 1992 14:16
Re: Video on demand --- info requested
Author: Jonathan Rosenberg
Date: Thu, 05 Nov 1992 14:16
Date: Thu, 05 Nov 1992 14:16
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From: nobuko@heel.CS.Berkeley.EDU (Nobuko (Koko) Nathan) Subject: Video on demand --- info requested Date: 5 Nov 1992 01:27:53 GMT > I am doing a survey of research on "Video on demand". > The idea is to keep a library of video data (e.g. > video tapes for movies) and let users to down load > whatever they want to their TV set at home through > telephone line, or some kind of communication lines. > I know the data set is too large for the telephone > lines we have today, Depends what you mean by "telephones lines". If you mean the phone network that runs to residences today, then yes, you're quite right (the best you can attain on those right now is about 14.4 kb/s, with a modem). But there is a technology that is beginning to move out of the lab that can support T1 rates (1.544 Mb/s) to most residences over the existing copper plant. This technology is known as ADSL (Asymmetric Digital Subscriber Line). If MPEG I-encoded video is acceptable to people for entertainment video, then ADSL will support video-on-demand. > but do you know anybody who is > working on this type of project? Or are you working > on it right now? If you do, please send me a mail. > I'd like to get some information. Any lead is > appreciated. Many thanks in advance. Try the following for starters: A. D. Gelman, H. Kobrinski, L. S. Smoot, S. B. Weinstein, M. Fortier and D. Lemay "A Store-and-forward Architecture for Video-on-demand Service" IEEE ICC '91, Denver, CO JR
Re: Video on demand --- info requested
Author: Jonathan Heiliger
Date: Sat, 07 Nov 1992 17:30
Date: Sat, 07 Nov 1992 17:30
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In article <1992Nov5.141630.10937@walter.bellcore.com> jxr@thumper.bellcore.com (Jonathan Rosenberg) writes: >best you can attain on those right now is about 14.4 kb/s, with a >modem). But there is a technology that is beginning to move out of the >lab that can support T1 rates (1.544 Mb/s) to most residences over the >existing copper plant. This technology is known as ADSL (Asymmetric Actually a T1 line still runs over normal copper wire. True, you usually need a hub & a hub adaptor for it; however it's still a normal phone wire. Or there is always 57.6Mb/sec lines which are just half of a T1. -- Jonathan Heiliger ........ Electric Power Research Institute Internet: -/- jonathan@rahul.net -/- flix@mecca.epri.com -/- Telephone <*> (415) 855-2888
Re: Video on demand --- info requested
Author: Ari Ollikainen
Date: Sat, 07 Nov 1992 20:46
Date: Sat, 07 Nov 1992 20:46
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In article <BxCwM4.n3F@rahul.net> jonathan@rahul.net (Jonathan Heiliger) writes: >In article <1992Nov5.141630.10937@walter.bellcore.com> >Or there is always 57.6Mb/sec lines which are just half of a T1. I'll bet you meant 756kb/s ! Ari Ollikainen ari@es.net
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