Patent ID: 7864028

Claim:
An in-vehicle emergency call apparatus comprising: an emergency notification detection unit configured to determine whether a condition for transmitting an emergency call signal from a radio communication unit to a service center is satisfied within a predetermined period from a time when the emergency notification detection unit received a detection signal indicating the existence of an emergency situation, and output a power supply switch signal and an emergency notification detection signal when the condition for transmitting the emergency call signal is determined to be satisfied; a power supply switch unit configured to switch an operating power supply unit from a main battery to an auxiliary battery when the power supply switch signal is input from the emergency notification detection unit to the power supply switch unit; a control unit configured to cause the radio-communication unit to transmit the emergency call signal to the service center when the emergency notification detection signal is inputted from the emergency notification detection unit to the control unit and when an electric power condition that the electric power is supplied to the radio communication unit is satisfied; an electric power supply unit electrically connected with the main battery and the auxiliary battery via the power supply switch unit, and configured to supply the electric power to the emergency notification detection unit, the control unit and the radio-communication unit selectively from one of the main battery and the auxiliary battery; a first electric power supply line system including a first wiring that electrically connects the electric power supply unit to the emergency notification detection unit and the control unit, and that allows the electric power supply unit to supply the electric power to the emergency notification detection unit and the control unit selectively from the one of the main battery and the auxiliary battery; and a second electric power supply line system including a second wiring that is provided independently of the first wiring such that: the second wiring electrically connects the electric power supply unit to the radio communication unit; and the second wiring allows the electric power supply unit to supply the electric power to the radio communication unit selectively from the one of the main battery and the auxiliary battery.