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RE: Real-time events

From: Roberto Scano - IWA/HWG <rscano@iwa-italy.org>
Date: Fri, 24 Feb 2006 10:54:15 +0100
To: "'Yvette Hoitink'" <y.p.hoitink@heritas.nl>, <w3c-wai-gl@w3.org>
Message-ID: <013701c63928$48099360$0200a8c0@rsnbiwa>

Agree with Yvette.
Also this definition of "real time" is good:

A term used to describe any system which operates such that input,
processing, and output take place over a short period of time and without
any long delays or storage of input or of intermediate or final results.

This refer to satellite, but I think could be adapted to our idea of

-----Original Message-----
From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf
Of Yvette Hoitink
Sent: Friday, February 24, 2006 10:39 AM
To: w3c-wai-gl@w3.org
Subject: RE: Real-time events

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 

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 captions are provided for live multimedia. [How to meet
2.2.1 For each time-out that is a function of the content, at least one of
the following is true: [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 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, timing is not an essential part of the
event or activity presented by the content. [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/> 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 09:54:46 UTC

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