Patent ID: 7868742
Filing Date: 2011-01-11
Classification: G08B

Abstract:
1. An emergency reporting apparatus for use in combination with an auxiliary battery device attachable to and detachable from the emergency reporting apparatus, the emergency reporting apparatus comprising: a power supply circuit having a vehicle battery mode and an auxiliary battery mode, the power supply circuit being configured to generate operating power of the emergency reporting apparatus from a vehicle battery in the vehicle battery mode and generate the operating power from the auxiliary battery device in the auxiliary battery mode; a control circuit configured to cause the power supply circuit to switch from the vehicle battery mode to the auxiliary battery mode in response to a trigger event to start an emergency reporting procedure, the control circuit starting the emergency reporting procedure by using the operating power generated from the auxiliary battery device; and a timer circuit configured to measure time elapsed since the power supply circuit switches from the vehicle battery mode to the auxiliary battery mode, wherein the control circuit causes the power supply circuit to switch from the auxiliary battery mode back to the vehicle battery mode, when the elapsed time exceeds a predetermined threshold time period.