Patent ID: 6795926
Filing Date: 2004-09-21
Classification: G06F

Abstract:
A computer system comprising:at least one connector, each connector configured to be coupled to a respective computer card circuit to provide a power management signal from the computer card circuit indicating a request to change a power state of the computer system; a chassis detection circuit having an output to provide an indication signal of whether a chassis of the computer system is open or closed; a gating circuit operably coupled to the chassis detection circuit to receive the indication signal from the chassis detection circuit and operably coupled to the at least one connector, the gating circuit having an output to selectively provide, as determined by the indication signal, a gated power management signal to initiate the placement of the computer system in a higher power state from a lower power state in response to receiving a power management signal from the at least one connector, wherein the gating circuit provides a gated power management signal when the indication signal indicates that the chassis is closed, wherein the gating circuit does not provide the gated power management signal when the indication signal indicates that the chassis is open; the gating circuit including an input to receive a power state indication signal indicating that the computer system is in a powered up power state; and when the indication signal indicates that the computer system is in a powered up state, the gating circuit providing at its output a signal to initiate a change in the power state of the computer system in response to receiving a power management signal from the at least one connector regardless of whether the indication signal of the chassis detection circuit indicates whether the chassis is open or closed.