Patent Number: 6,941,479

Title: Electronic apparatus

Abstract: The life of a secondary battery is extended and important data is backed upwhen power trouble, such as an incidental power failure, occurs. When asudden power failure occurs, a battery supplies backup power to a memoryfor storing data to be backed up. By using a main switch for turning themain power supply of the apparatus on or off, the supply of the backuppower from the battery to the memory is stopped, interlocked with the mainswitch, when the main switch shuts down the main power supply. Thisreduces the number charge-discharge cycles of the battery, preventsdeterioration of the battery, and prolongs the life of the battery.

Inventors: Sugiura; Takashi (Moriya-machi, JP)


International Classification:

Expiration Date: 09/06/2013