- From: Jeff Sussna <jeff.sussna@quokka.com>
- Date: Tue, 30 Nov 1999 13:08:16 -0800
- To: "'fin@finseth.com'" <fin@finseth.com>
- Cc: "'www-tv@w3.org'" <www-tv@w3.org>
Actually, the "U" in URI stands for "uniform", universal. There is nothing in the URI spec that states that a given resource identifier must have universal semantics. Just look at the "file:" scheme. Uniform just means that the overal URI protocol is uniform in that new schemes can be introduced without disrupting existing ones. "Channel 2" is therefore a perfectly valid URI, just as is "file://d:". It seems like the one thing we all agree on is that there are two levels of TV URI: physical (channel/time) and logical (program), and that the two must be mapped to one another. I don't really see any way of making physical URI's "universal" without a universal physical transport protocol. IP defines such a thing in the data world, but the TV world does not (unless you want to refer to things by their physical location in the electromagnetic spectrum). Jeff -----Original Message----- From: Craig A. Finseth [mailto:fin@finseth.com] Sent: Monday, November 29, 1999 7:54 PM To: jeff.sussna@quokka.com Subject: Re: TV Broadcast URI Schemes Requirements Yes, the same person may be creating content and assigning URI's, but a different person will be figuring out how to retrieve them. In the carousel case, I would claim that the carousel mechanism should be hidden from the URI, just as packet retransmission is. The case of a show that's on at OK. Fair enough. How about a box that has both an over-the-air antenna and a satellite dish? It needs to know if two items received (one via each) are the same. multiple times, that's more interesting. I think I may actually see your point here. I'll have to think further. I am certainly happy with the notion of a URN that maps to multiple URL's. Perhaps "channel 2 at 3:00 pm" is a URL and "X Files" is a URN. Hmm... But "Channel 2" is not (part of) a URL, because it is not U(niversal)... Craig
Received on Tuesday, 30 November 1999 16:05:11 UTC