×

Apparatus and method for gradually shutting down a power supply

  • US 5,915,118 A
  • Filed: 01/16/1996
  • Issued: 06/22/1999
  • Est. Priority Date: 03/28/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for shutdown of an information processing system processing first data stored in a storage device, the information processing system receiving electric power from a main power supply and from a battery when the electric power is not received from the main power supply, said method comprising:

  • detecting an outage of the electric power from the main power supply;

    monitoring remaining capacity of the battery when interruption of the electric power from the main power supply is detected;

    determining a starting point for executing a series of processes for shutdown of the information processing system based on the remaining capacity of the battery monitored by said monitoring, the series of processes includinga process of inhibiting access to the storage device,a process of storing second data in an external storage device, the second data relating to the first data stored in the storage device,a process of storing third data in the external storage device, the third data used for processing the first data stored in the storage device, anda final ending process of the series of processes to terminate operation of the information process system; and

    executing the series of processes from the process at the starting point to the final ending process.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×