Method and apparatus for waking up a computer system via a paral

Details Method and apparatus for waking up a computer system via a paral Method and apparatus for waking up a computer system via a paral

1995-11-29

1999-02-02

An, Meng-Ai T.

395821, 39518212, G06F 132

Patent

active

058677186

ABSTRACT:
A method and apparatus for waking up a computer system using a peripheral device connected to a standard parallel port of the computer system. Functionality is added to the parallel port Select line normally used to indicate that the peripheral device connected to the parallel port is on line when the select signal is high. A signal transition on the Select line from low to high is detected and used to wake up the computer system. This toggling of the Selected line is detected and used to activate the computer system power supply into a normal operating state from a power save state.

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