Apparatus and method for controlling power supply for use with c

Details Apparatus and method for controlling power supply for use with c Apparatus and method for controlling power supply for use with c

1996-12-05

1999-10-05

Sheikh, Ayaz R.

Electrical computers and digital processing systems: support

Computer power control

713320, G06F 100

Patent

active

059616474

ABSTRACT:
A method and circuit for controlling power supply for use with a monitor is disclosed. Without using separate switching device, the circuit utilizes a microcomputer in performing switching operation for supplying power. The circuit includes a control signal generating circuit disposed to receive a signal input from the computer system and to generate a corresponding control signal at its output terminal in dependence upon individual signal input; and a switching circuit for electrically switching power supply being applied responsive to the control signal. The method includes the steps of receiving a signal produced from the computer system via a signal cable at an input terminal of the monitor, the signal being subject to individual state of display power management system employed in the computer system', and generating a control signal corresponding to the signal from an output terminal of a microcomputer to an input terminal of a switching circuit. By eliminating manually operated switching device, aesthetic visual appearance of a monitor is enhanced, allowing manufacturing process more simplified thereby enhancing productivity at a low cost.

REFERENCES:
patent: 5335168 (1994-08-01), Walker
patent: 5359540 (1994-10-01), Ortiz
patent: 5375245 (1994-12-01), Solhjell et al.
patent: 5389952 (1995-02-01), Kikinis
patent: 5481732 (1996-01-01), Shahbazi
patent: 5483464 (1996-01-01), Song
patent: 5603040 (1997-02-01), Frager et al.
patent: 5696978 (1997-12-01), Nishikawa

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