Automobile telephone device with battery saver

H - Electricity – 04 – M

Patent

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325/30

H04M 1/64 (2006.01) H04B 1/16 (2006.01) H04Q 7/04 (1990.01)

Patent

CA 1300231

ABSTRACT OF THE DISCLOSURE An automobile telephone device uses as its power source a battery for the automobile. This applies to an automobile telephone device with an automatic answering or receiving function. In the automobile telephone device, a voltage monitoring unit monitors the voltage of the battery. When the voltage falls near a limit voltage required for starting the automobile engine, the monitoring unit electrically interrupts a power source line connecting the battery and the telephone device via a proper switch circuit to thereby inhibit excessive consumption of the automobile battery by the automatic answering or receiving function during engine stoppage.

578685

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