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US 5,335,168 AGranted
Computer system with power-down mode for monitor
AssigneeCompaq Computer Corporation
InventorRichard E. Walker
Life of this patent
Estimating the term…
Abstract
A computer system has a monitor which can be powered down to conserve electrical power. The Monitor has two power modes, normal power mode and low power mode. Upon receiving a signal from the CPU, the monitor switches between power modes.
Claims14
A computer system having a central processing unit comprising:
- a display device having a normal powered-on mode and a low powered-on mode;
- a heating filament disposed within the display device;
- a normal voltage source applied to the heating filament when the display device is in the normal power mode;
- a low voltage source applied to the heating filament when the display device is in the low power mode;
- and
- means for changing the power mode of the display device between the normal powered-on mode and the low powered-on mode.
3 more elements
A method for reducing power consumption of a computer system comprising the steps of:
- providing a display device having a normal power consumption mode and a lower power consumption mode;
- and
- reducing the power to the display device from the normal power consumption mode to the lower power consumption mode by reducing the power to selected elements of the display device;
- wherein said power reducing step includes the additional steps of:
- turning off the power to a first set of power-consuming elements of the display;
- and
- reducing the power to a second set of power-consuming elements of the display.
4 more elements
A method of reducing power consumption of a display device having a normal power mode an a low power mode for use with a computer system comprising the steps of:
- receiving a first signal from the computer system;
- and
- reducing the power consumption of the display device from the normal power mode to the low power mode in response to the first signal by reducing the power to selected elements of the display device.
Dependencies are inferred from the claim text.