Electrical audio signal processing systems and devices – Hearing aids – electrical
Reexamination Certificate
2004-12-01
2008-10-07
Le, Huyen D (Department: 2615)
Electrical audio signal processing systems and devices
Hearing aids, electrical
C381S331000
Reexamination Certificate
active
07433480
ABSTRACT:
To allow bidirectional data communication to be realized in hearing aids which have only a restricted installation space, the earphone, i.e. the electroacoustic transducer unit, is used as the transmitter and the telephone coil as the receiver for high-frequency signal components. This makes it possible to dispense with the installation of an additional antenna, generally of a large volume, that is optimized for transmitting and receiving operations. If appropriate, a small additional antenna may also be used purely as a receiving antenna for high-frequency signals.
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Le Huyen D
Schiff & Hardin LLP
Siemens Audiologische Technik GmbH
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