Real Time Caption providers

We are collecting the names of companies that provide real-time  
captioning over the web.

The ones we know about are

http://www.captionfirst.com/
http://www.vitac.com/
http://www.captioncolorado.com/

if you know of others can you send me an email?

thanks

Gregg
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Gregg Vanderheiden Ph.D.
Director Trace R&D Center
Professor Ind and Biomed Engr
University of Wisconsin-Madison