Reducing power consumption in monitor by switching off heater po

Details Reducing power consumption in monitor by switching off heater po Reducing power consumption in monitor by switching off heater po

1997-03-10

1999-08-31

Sheikh, Ayaz R.

Electrical computers and digital processing systems: support

Computer power control

Power conservation

713320, 345211, 345212, G06F 132

Patent

active

059448300

ABSTRACT:
An apparatus for controlling the power management of a display monitor includes: a switching circuit provided in a power supply line between one output of a power supplying transformer and a heater of a color display tube for directly switching off the power supply line when the monitor enters the power-off mode. Also, a mode indicator may also be provided for indicating the power-off mode of the monitor. A microcomputer operates in response to the power-off mode to generate a high-level control signal supplied to the switching circuit and to the mode indicator. Also, a continuous pulse train signal having a predetermined on/off pulse duration is generated, representing the power-off mode. When both a high level control signal and the pulse train signal are supplied to the mode indicator, a power-off mode indicating operation using one LED is possible.

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