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Re: Use of the term "synchronized equivalent"

From: Marja-Riitta Koivunen <marja@w3.org>
Date: Mon, 29 Nov 1999 13:26:32 -0500
Message-Id: <>
To: Ian Jacobs <ij@w3.org>, w3c-wai-pf@w3.org
Cc: w3c-wai-ua@w3.org
The term continuous equivalent came after discussions with the SMIL WG. It
tells that the element has a time component in itself. Discreate
equivalents do not have it. Both can be synchronized to other time
dependent components. E.g. an image might be shown during the first ten
minutes of a video.

If we want to emphasize the time component I wouldn't want to change the
name continuous equivalent.


At 12:12 PM 11/29/99 -0500, Ian Jacobs wrote:
>Al, Daniel,
>At the 24 November UAGL teleconf [1], I was given an action
>item to propose to this WG the adoption of the term "synchronized
>equivalent" or "synchronized alternative" (proposed by Eric Hansen in
>instead of the term used in the last call draft [2], 
>"continuous equivalent (track)".
>There is some precedent for the new term. From WCAG 1.1, checkpoint 1.4:
>  1.4 For any time-based multimedia presentation (e.g.,
>      a movie or animation), synchronize equivalent
>      alternatives (e.g., captions or auditory descriptions of the
>      visual track) with the presentation.
>The term "continuous equivalent track" first appears in the SMIL
>Access Note [4].
>Please let the UAGL WG know if the term "synchronized equivalent"
>accurately describes captions, auditory descriptions, or other
>alternative formats that must be synchronized with an audio or
>video track.
>Thank you,
> - Ian
>[1] http://lists.w3.org/Archives/Public/w3c-wai-ua/1999OctDec/0426.html
>[2] http://www.w3.org/TR/1999/WD-WAI-USERAGENT-19991105/
>[4] http://www.w3.org/TR/SMIL-access/
>[5] http://lists.w3.org/Archives/Public/w3c-wai-ua/1999OctDec/0337.html
>Ian Jacobs (jacobs@w3.org)   http://www.w3.org/People/Jacobs
>Tel/Fax:                     +1 212 684-1814
>Cell:                        +1 917 450-8783
Received on Monday, 29 November 1999 13:28:59 UTC

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