Patent ID: 6941479
Filing Date: 2005-09-06
Classification: G06F,H04N

Abstract:
1. An electronic apparatus including a memory to which a power is supplied from a main power supply of the apparatus, a main switch for controlling turn-on/turn-off of the main power supply of the apparatus and a soft-switch for controlling mechanical closing/opening of the main switch, said apparatus further comprising: control means for determining whether important data which causes serious damage when erased is stored in the memory, when the shutdown of the main power supply is instructed by the soft-switch, and for controlling a shutdown operation of the main power supply by the main switch according to a result of the determination; backup battery for supplying power to the memory while the main power supply is shut down; switch means controlling the supply from the backup battery to the memory; wherein said control means causes the switch means to forcibly hold the supply of power from the backup battery to the memory when the control means determines that important data is stored in the memory, while said control means causes the switch means not to supply the power from the backup battery to the memory when the control means determines that no important data is stored in the memory.