| 摘要 |
The present invention relates to a power management system and method for a computer system. The current ACPI specification defines, amongst other states, an S3 state and an S4 state. The S3 state has the advantage that a transition to a working state S0 is relatively quick, 5 seconds, but the disadvantage that the system context cannot be recovered after a power failure. The S4 state has the disadvantage that a transition to the S2 state takes a significant period of time, between 20-40 seconds, but the advantage that the system context can be recovered from a power failure. Suitably, the present invention defines a safe S3 state in which the transition to the working state takes a relatively short period of time but the same state, upon entry into that state, also saves system context data to a non-volatile storage device to allow recovery from a power failure. <IMAGE> |
