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US 5,630,144 AGranted
Desktop computer monitor power control using keyboard controller
AssigneePhoenix Technologies Ltd.
InventorsKenneth M. Woog, Tony Casano, Mark Caradori
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AssigneePhoenix Technologies Ltd.
InventorsKenneth M. Woog, Tony Casano, Mark Caradori
Estimating the term…
A desktop computer power controller uses the keyboard controller of the computer to time the duration of keyboard or other input device inactivity and to assert a power control signal when the duration exceeds a predetermined threshold value. A power control unit coupled to the keyboard controller interrupts power to a peripheral device such as a video monitor when the duration of inactivity exceeds the threshold value. In an alternative embodiment, the power control unit switches the peripheral device into a low-power mode when the duration of inactivity exceeds the threshold value. Once in low-power mode, the keyboard controller switches the device back to normal mode upon detecting resumed activity on the keyboard or other input device.
A system for controlling power to a peripheral device associated with a computer, the computer including a central processing unit and an input device in addition to the peripheral device, the system comprising:
A method of controlling power to a peripheral device associated with a computer, the computer including a central processing unit, an input device and an input device controller in addition to the peripheral device, the method comprising the steps of:
Dependencies are inferred from the claim text.