| 摘要 |
The radio telephone apparatus which is mounted on a car is disclosed. An operational state of the apparatus is memorized therein as a power flag. On the basis of the power flag, the apparatus may be recovered to an operational state at a time when an ignition switch of the car is turned off. More specifically, the power flag may be referred every time a position of the ignition switch is changed from OFF position to ON position. At the event, if the flag indicates that the apparatus was in an operative state at a time when the ignition switch of the car is turned off, the power supply to the apparatus is resumed in response to the position change of the ignition switch. Contrarily, if the flag indicates that the apparatus was not in an operative state, the power supply to the apparatus is not initiated even if the position of the ignition switch is changed.
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