- From: Johan Hjelm <hjelm@w3.org>
- Date: Mon, 08 Mar 1999 15:11:18 +0100
- To: Philipp Hoschka <ph@w3.org>, www-tv@w3.org
- Cc: w3t-arch@w3.org
Actually, this problem is exactly the same as when you have a pager or other device that does not have bidirectional communication with the server. One way to do it is to set up a generic profile for the device class, which is activated when the device is activated (e.g. when the device is bought, through a telephone call to the provider - the same way as is done with pagers now). The WAP Forum Push group has been working on this (using CC/PP), but there are some other problems with push media that also need to be adressed (e.g. caching) that it is not clear how to solve. Johan At 10:53 1999-03-08 +0100, Philipp Hoschka wrote: >Date: Sun, 07 Mar 1999 14:53:09 -0800 >To: www-tv@w3.org (WWW TV List) >From: "Michael A. Dolan" <miked@tbt.com> >Mime-Version: 1.0 >Subject: HTTP server driven content negotiation >Resent-From: www-tv@w3.org >X-Mailing-List: <www-tv@w3.org> archive/latest/302 >X-Loop: www-tv@w3.org >Sender: www-tv-request@w3.org >Resent-Sender: www-tv-request@w3.org >Precedence: list >Content-Type: text/plain; charset="us-ascii" >Content-Length: 731 > >When making content-based system profiles, it would be handy to tag >broadcast content. > >As best as I can tell, CC/PP and the IETF conneg work is not suitable since >it requires the client to first describe its profile (which cannot >generally be done in TV). > >HTTP 1.1 has the Vary tag and the concept of server driven content >negotiation. However, I found the use of the Vary tag somewhat vague. >Anyone have any experience with this tag? Is there more info somewhere at >W3C on this - from the HTTP 1.1 author perhaps? > >Thanks for any pointers. > >Regards, > Mike > >- ------------------------------------------------------ >Michael A. Dolan, Representing DIRECTV, (619)445-9070 >PO Box 1673 Alpine, CA 91903 FAX: (619)445-6122 > > >------- End of Forwarded Message ************************************************************ Johan HJELM Ericsson Research, User Applications Group Currently visiting engineer at the W3C The World Wide Web Consortium hjelm@w3.org http://www.w3.org/People/W3Cpeople.html#Hjelm Fax +1-617-258 5999, Phone +1-617-263-9630 MIT/LCS, 545 Tech. Sq. Cambridge MA 02139 USA opinions are personal, always my own, and not necessarily those of Ericsson or the W3C. ============================================================
Received on Monday, 8 March 1999 09:15:23 UTC