Method for calibration of a keyless entry system for a motor...

Details Method for calibration of a keyless entry system for a motor... Method for calibration of a keyless entry system for a motor...

2005-07-05

2005-07-05

Foster, Roland G. (Department: 2645)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S264000, C455S041300, C340S426360, C180S287000, C307S010100

Reexamination Certificate

active

06915122

ABSTRACT:
Method for calibrating a motor vehicle hands-free access system comprising a control unit (UC) with an emitting antenna (AE) and an antenna controller (PA), consists in:1. sending to the control unit (UC), from a measurement apparatus (AM) equipped with a receiving antenna (AR) connected to the control unit (UC) via a wire link (LF), a message to configure the control unit (UC) in calibration mode,2. transmitting a signal via said emitting and receiving antennas (AE, AR) to said measurement apparatus (AM),3. measuring characteristics of the received signal, comparing them with reference values and sending calibration data via the wire link (LF),4. on receipt of the data, modifying the parameters of the antenna controller (PA). Using this method, it is possible to correct certain operating defects of the hands-free access systems through an operation at the end of the motor vehicle assembly line.

REFERENCES:
patent: 4755823 (1988-07-01), Ohe et al.
patent: 5396255 (1995-03-01), Durkota et al.
patent: 2002/0014859 (2002-02-01), Boulesteix
patent: 2002/0160720 (2002-10-01), Meradi
patent: 0 901 183 (1999-03-01), None
patent: 1189302 (2002-03-01), None

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