| 摘要 |
PROBLEM TO BE SOLVED: To reduce the electric energy supplied to terminal equipment for emergency notice system equipped with a telephone handset from a battery mounted on a vehicle by reducing the power consumption of the terminal equipment when the equipment connects an emergency notice to an emergency notice center for transferring positional data, etc., to the center, and so on. SOLUTION: When the terminal equipment starts emergency notice connecting operation based on the depressing of an emergency notice transmitting button 3, and so on, at normal time other than emergency notice connecting operation performing time, the equipment controls to turn off the power supply to the telephone handset 8. At the time of turning off the power supply to the handset 8, a control section 12 outputs an 'L' signal to the base terminal of a second transistor (184). The transistor (184) opens the base terminal of a first transistor (182) in accordance with the 'L' signal. When the base terminal is opened, the transistor (182) turns off the power supply to the telephone set 8. |
