URL: DTV and ATSC URL proposal from GI

Here is a proposal of a URL, actually 2 URLs: 
1. Generic DTV URL which can cover both ATSC as well as DVB transport
streams
2. ATSC specific URL which takes advantage of ATSC specific features such as
PSIP. 

This still needs some work, especially the mapping to the transport stream
components (events, carousels, applications, etc.).

	Petr

 <<T3S8252.DOC>> 
________________________________
Petr Peterka
Sr. Staff Engineer, Advanced Technology
General Instrument, San Diego
(619) 404 2689
ppeterka@gi.com

> -----Original Message-----
> From:	djz@corp.webtv.net [SMTP:djz@corp.webtv.net]
> Sent:	Friday, October 09, 1998 1:24 PM
> To:	'Philipp Hoschka'; www-tv@w3.org
> Subject:	URL: Getting started
> 
> I've volunteered to take a stab at writing a document on TV-oriented URL
> schemes.  I happen to be already working on a revision to my original
> IETF Internet-Draft on "tv:", so the timing works out well to bring this
> into the interest group.
> 
> It sounds to me like there's probably more than one URL scheme needed
> anyway: there's a generic URL for TV broadcasts that is transport
> independent (like "tv:") and then there are probably several
> transport-specific schemes (like "dvb:").  The first is more like a
> resource name than a locator (describing a given broadcast stream,
> rather than explaining where to find it), whereas the second class of
> schemes are true resource locators.
> 
> Since my old "tv:" URL draft has expired, I've put it up on our local
> Web site at http://www.microsoft.com/dtv/draft-zigmond-tv-url-00.txt.
> This was just an early draft, so understand that I'm not proposing this
> as the final answer for us.  But I hope it helps get the discussion
> going.
> 
> 	Dan
> 
> 
> ---------------------------------------------------
> Dan Zigmond
> Co-Manager, Interactive Television
> Senior Manager, Interactive Television Standards
> WebTV Networks, Inc.
> djz@corp.webtv.net
> ---------------------------------------------------
> 
> 
> -----Original Message-----
> From: Philipp Hoschka [mailto:ph@w3.org]
> Sent: Friday, October 09, 1998 1:12 PM
> To: www-tv@w3.org
> Subject: Getting started
> 
> 
> 
> In the immediate future, we need to address the following
> discussion items from
> 
> http://www.w3.org/TV/TVWeb
> 
> 1) Document on TV-specific requirements on CSS
> 2) Document on "tv" URL-scheme
> 
> The page already lists a number of people that have
> expressed interest to do the work required here.
> It also lists the current status that I'm aware of, e.g.
> which documents already exist.
> 
> To get started, I guess the best way to procede is
> for one or more of the people listed as "workers" for
> each topic to come up with strawman proposal(s) on these
> topics, and send them to this list. To distinguish between
> the two topics, please put "URL:" or "CSS:" at the beginning
> of the subject line.
> 
> The page also lists a discussion item on a "Document on
> TV-specific requirements on HTML". My feeling is that
> this has been a bit overtaken by events since the IG proposal
> was written, since different groups have already started to work on
> this (see page for details)
> 
> If there are no objections, I would thus like to change
> this work item into reviewing eventual working
> drafts coming out of these groups on whether they meet the
> TV-specific requirements they claim to address,
> rather than writing our own requirements document.
> However, I'm open to suggestions.
> 
> -Philipp Hoschka, W3C
> 
> ----------------------------------------------------------------------
>    Philipp Hoschka                  |
>    http://www.w3.org/people/hoschka |
> 				    |   World Wide Web Consortium
> 				    |   MIT-LCS
>    ph@w3.org                        |   545, Technology Square
>    Tel:(+1) 617.258.0604            |   Cambridge, MA 02139
>    Fax:(+1) 617.258.5999            |   USA
> ----------------------------------------------------------------------