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RE: Real-time events

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Sun, 26 Feb 2006 15:30:36 -0600
To: <w3c-wai-gl@w3.org>
Message-ID: <002501c63b1b$e234e170$ee8cfea9@NC6000BAK>


Building on Yvette's contribution, how about we do the following


1)      Add the phrase  "where time-out is essential" to  the fourth bullet
under 2.2. 

2)      Change the definition of real time event to:  



"Real world events that are occurring at the same time as the viewing and
are not recorded or generated by the content."  


For referenced that the provisions would look like:

 2.2.1 For each time-out that is a function of the content, at least one of
the following is true: [
tml#time-limits-required-behaviors> How to meet 2.2.1] 

*         the user is allowed to deactivate the time-out or; 

*         the user is allowed to adjust the time-out over a wide range which
is at least ten times the length of the default setting or;

*         the user is warned before time expires and given at least 20
seconds to extend the time-out with a simple action (for example, "hit any
key") and the user is allowed to extend the timeout at least 10 times or;

*         the time-out is an important part of a real-time event  where
time-out is essential to the activity (for example, an auction), and no
alternative to the time-out is possible or;

*         the time-out is part of an
<http://www.w3.org/WAI/GL/WCAG20/appendixA.html#activity-timingdef> activity
where timing is essential (for example, competitive gaming or time-based
testing) and time limits can not be extended further without invalidating
the activity.


2.2.4 Except for real-time events
<http://www.w3.org/WAI/GL/WCAG20/appendixA.html#real-time-eventsdef> ,
timing is not an essential part of the event or activity presented by the
content. [
tml#time-limits-no-exceptions> How to meet 2.2.4]



 -- ------------------------------ 
Gregg C Vanderheiden Ph.D. 
Professor - Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 
The Player for my DSS sound file is at http://tinyurl.com/dho6b


Received on Sunday, 26 February 2006 21:30:39 UTC

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