System for using text terminal for the deaf (TTD) devices...

Details System for using text terminal for the deaf (TTD) devices... System for using text terminal for the deaf (TTD) devices...

2004-04-29

2009-08-25

Pwu, Jeffrey (Department: 2446)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Reexamination Certificate

active

07580977

ABSTRACT:
A gateway receives a call from a Text Terminal for the Deaf (TTD) device associated with an instant messaging or chat session. The gateway establishes the instant messaging or chat session on behalf of the TTD device and then converts between the TTD tones used by the TTD device and text used in the instant messaging or chat session.

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patent: 7142642 (2006-11-01), McClelland et al.
patent: 7174004 (2007-02-01), Michaelis
patent: 2004/0228325 (2004-11-01), Hepworth et al.

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