Power switching device and method of display monitor through res

Details Power switching device and method of display monitor through res Power switching device and method of display monitor through res

1998-05-29

2000-09-12

Palys, Joseph E.

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

713320, G06F 15177, G06F 132

Patent

active

061192252

ABSTRACT:
A method and device which powerswitches a display monitor through the reset of a microcomputer is adapted to interrupt the latch up caused during the use of a soft power key by reading the power state of the display monitor before latch up from a memory, and switching the power state to the state before the latch up of the display monitor. The device includes: a soft power key section for generating a reset signal; an EPROM for storing data concerning the power on/off state of the display monitor before the operation of the soft power key section; a microcomputer for generating a power-off signal with the use of the soft power key section and, if a latch up occurs during the use of the soft power key section, reading the power on/off state data stored in the EPROM and switching the power state of the display monitor to the state before the latch up; and a power supply circuit section controlled according to the presence of the power-off signal generated by the microcomputer, and switching the output of a DC voltage.

REFERENCES:
patent: 5097249 (1992-03-01), Yamamoto
patent: 5521854 (1996-05-01), Kadowaki
patent: 5721934 (1998-02-01), Scheeurich
patent: 5845136 (1998-12-01), Babcock
patent: 5892942 (1999-04-01), Ohnishi

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