Patent ID: 7131011
Filing Date: 2006-10-31
Classification: G06F

Abstract:
1. A computer comprising: an operating system; an energy storage medium having a DC voltage; a power supply for converting AC power into DC power for powering components of the computer, the power supply having a switchover circuit configured to connect the DC voltage of the energy storage medium to the power supply for powering operations of the computer when a failure of the AC power occurs while the computer is in a standby state; a power management controller for controlling transitions of the computer between power states, the power management controller being programmed to wake the computer from the standby state to enter a working state in response to the AC power failure; and a battery driver configured to generate a backup-power-critical signal after the computer is in the working state to trigger the operating system to store state data of the computer in a non-volatile memory and put the computer into a hibernation state, the battery driver generating the backup-power-critical signal when the energy storage medium is not at a critically low energy level, the switching circuit disconnecting the energy storage medium from the power supply after the computer is in the hibernation state.