Electrical audio signal processing systems and devices – Hearing aids – electrical – Remote control – wireless – or alarm
Reexamination Certificate
2011-01-11
2011-01-11
Nguyen, Tuan D (Department: 2614)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Remote control, wireless, or alarm
C381S331000
Reexamination Certificate
active
07869612
ABSTRACT:
A system and method provides optimization of the strength and orientation of the inductive field of a hearing aid compatible (“HAC”) device, relative to a telecoil in a user's hearing aid. One aspect provides control of the drive level of a transmitting telecoil contained in the HAC device. Other aspects provide steering of the inductive field of the device by using a telecoil array and controlling the amplitude or phase of the signals transmitted by each telecoil in the array to create a composite field. Another aspect provides a plurality of transmitting telecoils arranged such that each telecoil has a different orientation, and a plurality of switches for controlling which transmitting telecoil is active. The user may then select the telecoil having a preferred orientation. Another aspect allows a transmitting telecoil to be physically oriented to an optimal position by embedding the telecoil in a substantially spherical element.
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AT&T Mobility II LLC
Moazzam & Associates, LLC
Nguyen Tuan D
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