System for calibrating a hands-free system

Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part

Reexamination Certificate

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Details

C455S423000, C455S424000, C455S425000, C455S067110, C455S067130, C455S068000, C455S074100, C455S570000, C455S115100, C455S115200, C455S226100, C702S085000, C702S107000, C702S117000, C324S130000, C324S527000, C324S755090, C324S763010

Reexamination Certificate

active

07826799

ABSTRACT:
A method for calibrating a hands-free system is provided. The hands-free system comprising a hands-free unit and a mobile phone, the method comprising the following steps of setting up a connection between the hands-free system and a distant terminal via a mobile telephony network of the mobile phone, transmitting a predetermined test signal from one of the hands-free system and the distant terminal to the other of the hands-free system and the distant terminal, the predetermined test signal being provided in both the hands-free system and the distant terminal as reference test signal, comparing the received test signal to the reference test signal stored in the other of the hands-free system and the distant terminal, and determining the calibration parameters of the hands-free system in accordance with the comparison.

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patent: 7519392 (2009-04-01), Kwak
patent: 2004/0207422 (2004-10-01), Lehtinen et al.
patent: 1376997 (2004-01-01), None
patent: 1 583 265 (2005-05-01), None
patent: 1583265 (2005-10-01), None
patent: 2736490 (1995-07-01), None

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