Patent ID: 8028177
Filing Date: 2011-09-27
Classification: G06F

Abstract:
1. A method for changing power states of a computer, comprising: receiving a first power command to change a power state of the computer from a work state to a sleep state; sending a shutdown event to all running applications of the computer; storing a system memory image of the computer into a flash memory of the computer, and storing the system memory image into a hard disk of the computer; changing the state of the computer from the work state to the sleep state by executing a series of going-to-sleep instructions; receiving a second power command to change the power state of the computer from the sleep state to the work state; identifying hardware configuration of the computer and checking if the hardware configuration of the computer has been changed in the sleep state; and restoring the system memory image from the hard disk or directly loading an operating system image from the hard disk if the hardware configuration of the computer has been changed, comprising: