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US 7,065,660 B2Granted
Power management based on current state and duration of a request signal
AssigneeHewlett-Packard Development Company, L.P.
InventorSamuel Navarro Sanchez
Life of this patent
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Abstract
A control module for a system having a current state comprising one of a first state and a second state, the control module being operable to receive a first input corresponding to the current state and a second input corresponding to a requested state, the control module being operable when the current state and the requested state are different, to generate a output to cause a transition from the current state to the requested state.
Claims7
A computer comprising a power management control module, a manually operable switch, and a power control module wherein
- a current state of the computer comprises a power on state and a power off state,
- the power management control module being operable to receive a first input and a second input, the first input corresponding to the current state, the second input comprising a request signal received from the manually operable switch and corresponding to a requested state, the requested signal having a time duration, wherein a request signal corresponding to the power off state has a time duration that is different from that of a request signal corresponding to the power on state,
- generate an output comprising a single pulse when the requested state is different from the current state,
- cause no change in the output when the request signal corresponds to the power on state and when the computer is in the power on state, and
- generate an output having two pulses when the computer is in the power off state and when the requested state is the power off state,
- wherein the power control module is responsive to the output to cause a transition between the power on state and the power off state.
3 more elements
Dependencies are inferred from the claim text.