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RE: Real-time events

From: Yvette Hoitink <y.p.hoitink@heritas.nl>
Date: Fri, 24 Feb 2006 10:38:41 +0100
To: w3c-wai-gl@w3.org
Message-id: <001e01c63926$19543f90$d200a8c0@heritas.local>
Hi Gregg and others,
I don't like "events that are live" as a definition of "real-time events". I
associate "live" with performances, not with events like auctions, games,
"Live" has multiple definitions in dictionary.com, including the following
which relate to your use of the word:

*	Broadcast while actually being performed; not taped, filmed, or
recorded: a live television program. 
*	Involving performers or spectators who are physically present: live
entertainment; a live audience. 

Neither of them are what we mean for real-time events. Real-time events
don't necessarily involve broadcasting or performers or spectators who are
physically present. 
Dictionary.com has the following definition of real-time:  "Of or relating
to the actual time during which something occurs; that is, current as
opposed to delayed."  That seems closer to what we want so perhaps that can
be some inspiration for the definition of real-time events. I can't think of
a way to make it work so I have no suggestion.
Yvette Hoitink
Heritas, Alphen aan den Rijn, the Netherlands
E-mail: y.p.hoitink@heritas.nl
WWW:  <http://www.heritas.nl/> http://www.heritas.nl 



From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf
Of Gregg Vanderheiden
Sent: vrijdag 24 februari 2006 5:25
To: w3c-wai-gl@w3.org
Subject: Real-time events

I had an action item to see if our new definition for Real-time would work.


Here are the places we use the term  (the first one is actually not a use of
real-time events)


1.2.3 Real-time
<http://www.w3.org/WAI/GL/WCAG20/appendixA.html#captionsdef> captions are
provided for live
<http://www.w3.org/WAI/GL/WCAG20/appendixA.html#multimediadef> multimedia. [
tml#media-equiv-real-time-captions> How to meet 1.2.3]


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 (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
<http://www.w3.org/WAI/GL/WCAG20/appendixA.html#real-time-eventsdef> events,
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]



The new definition is


real-time events

events that are live 



Interesting.  Should we just plug in "live events"?    (or would we need to
define that)





Gregg C Vanderheiden Ph.D. 
Professor - Depts of Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 
< <http://trace.wisc.edu/> http://trace.wisc.edu/> FAX 608/262-8848  
For a list of our list discussions http://trace.wisc.edu/lists/

The Player for my DSS sound file is at  <http://tinyurl.com/dho6b>



Received on Friday, 24 February 2006 09:38:49 UTC

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