| 摘要 |
PURPOSE: A multimedia advertising system having a guide message output function is provided to have advertisement effects in the normal times and offer information on an emergency state and a shelter in the event of an emergency. CONSTITUTION: An auxiliary power unit(116) charges power supplied from a power source(113) during the normal operation of the power source and confirms a power outage and supplies the charged power to components when the power supply is cut off. An emergency message storage unit(117) stores guide messages according to emergency state and provides a guide message corresponding to an input control signal to a driving unit(112). An alarm sensor(115) monitors the occurrence of an emergency and provides a sensing signal according to a detected emergency state so that a control unit controls the emergency message storage unit and the driving unit according to the emergency state. |
