Communication terminals with a dual use speaker for sensing...

Details Communication terminals with a dual use speaker for sensing... Communication terminals with a dual use speaker for sensing...

2006-05-30

2006-05-30

Harold, Jefferey (Department: 2646)

Telephonic communications

Substation or terminal circuitry

For loudspeaking terminal

C379S388040, C379S392010

Reexamination Certificate

active

07054436

ABSTRACT:
Communication terminals, methods, and computer program products are provided that sense background noise via a speaker that is also used to generate sounds. In some methods of operating a communication terminal, and a speaker signal is supplied to a first speaker to generate sound therefrom, a noise sensing signal is received from the first speaker. The noise sensing signal includes a contribution associated with background noise that is incident to the first speaker. Presence of the background noise in the noise sensing signal is determined.

REFERENCES:
patent: 5485515 (1996-01-01), Allen et al.
patent: 5748725 (1998-05-01), Kubo
patent: 6363344 (2002-03-01), Higuchi
patent: 2003/0118201 (2003-06-01), Leske et al.

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