Wireless phone powered inductive loopset

Details Wireless phone powered inductive loopset Wireless phone powered inductive loopset

2006-10-03

2006-10-03

Swerdlow, Daniel (Department: 2615)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S420000, C455S550100, C455S557000, C455S100000, C455S573000, C455S127100, C329S350000, C381S094600, C381S323000

Reexamination Certificate

active

07117010

ABSTRACT:
An induction-type loopset is provided that is connectable to a wireless device. The loopset contains a first coil electromagnetically coupled to a t-coil hearing aid and an impedance-matching device coupled to the first coil. The impedance-matching device is responsive to an audio signal from the wireless device. The induction-type loopset is powered from the power source of the wireless device. The power source is responsive to an activation state of the wireless device.

REFERENCES:
patent: 5575682 (1996-11-01), Alexander
patent: 5786106 (1998-07-01), Armani
patent: 5876242 (1999-03-01), Williams
patent: 5903850 (1999-05-01), Huttunen et al.
patent: 6118882 (2000-09-01), Haynes
patent: 6307945 (2001-10-01), Hall
patent: 6381308 (2002-04-01), Cargo et al.
patent: 6616300 (2003-09-01), Hrabal
patent: 2004/0136555 (2004-07-01), Enzmann

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