Method for Operating a Communications Accessory Device
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United States of America Patent
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Issued Date -
Sep 30, 2010
app pub date -
Mar 19, 2010
filing date -
Mar 24, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present application relates to a communications accessory device, system and method for a motor vehicle having an ignition variable between an “ON”-state and an “OFF”-state, wherein the device and system comprises a permanent power supply line input and an ignition sense line input, wherein the device and system further comprises a control logic directly or indirectly connected to both inputs, and wherein, when not installed, the power supply status of both inputs is “LOW” and, when properly installed in a motor vehicle the power supply status of the permanent power supply line input is permanently “HIGH” and the power supply status of the ignition sense line input is “HIGH” when the ignition of the motor vehicle is “ON” and is “LOW” when the ignition of the motor vehicle is “OFF”. A method of the present application comprises individually detecting the power supply status of the power supply line input and of the ignition sense line input and, in response thereto, at least setting a wrong installation status flag when a power supply status “LOW” of the power supply line input is detected while a power supply status “HIGH” of the ignition sense line input is detected.
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