usenet announcement

Peter Williams <P.Williams@cs.ucl.ac.uk> Tue, 03 November 1992 01:01 UTC

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To: ietf-oda@cs.ucl.ac.uk
Subject: usenet announcement
Date: Mon, 02 Nov 92 10:46:33 +0000
From: Peter Williams <P.Williams@cs.ucl.ac.uk>
Message-ID: <9211022001.aa09567@CNRI.Reston.VA.US>

Just in case you dont read usenet:

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From: cs.utexas.edu!uwm.edu!zaphod.mps.ohio-state.edu!@net.uu.uunet (Wolfgang Appelt)
Subject: Re: ODA futures - multimedia, video etc.?
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As a member of SC 18/WG 3 I can make some comments on your questions:
- - The new version of ODA is currently prepared by the Editors. The
  final Editors meeting is scheduled for next February in Barcelona.
  The new version will contain all Addenda and Technical Corrigenda
  which have been developed since the first publication of ODA in 1989,
  e.g., the colour addendum and the addendum on security. Except for
  some new encoding types for raster images, no new content architectures
  will be included.
- - The inclusion of JPEG pictures has already been discussed in WG 3
  and it is rather likely that JPEG will be added in the future. I
  believe that JPEG does not require a real new content architecture.
  It is probably sufficient to deal with JPEG as an additional
  encoding for raster images, and maybe one or two new attributes
  have to be added. (Group 4 fax is already included in ODA).
- - WG 3 is currently working very actively on hypermedia extensions of
  the ODA standard where one of these extensions is the introduction
  of the concept of time, e.g., each layout object receives a position
  and duration on the time axis in addition to the current two-dimensional
  spatial coordinates.
- - Another part of ODA currently under development is "Part 9: Audio
  Content Architectures". Obviously, the above mentioned concept of
  time is required when introducing audio content.
- - Having introduced the concept of time into ODA, the inclusion of
  content types such as MPEG should be straightforward. There exists
  not yet a firm plan to really include MPEG, but forwarding a
  respective requirement to ISO (by means of your ISO national member
  body) would most likely initiate such a project.
- - There exists a close liaison to the MHEG group in SC 29. In fact,
  WG 3 members participate in MHEG meetings, and vice versa.
- - The usage of X.400 for transmitting ODA documents is already
  addressed in Part 1 of the ODA standard.

Wolfgang Appelt
German National Research Center for Computer Science
St. Augustin
Germany

email: appelt@gmd.de
kKeywords: video ODA multimedia

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