Apparatus for waking up a system and the computer system using the same
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United States of America Patent
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Nov 18, 2014
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N/A
app pub date -
May 8, 2013
filing date -
May 18, 2012
priority date (Note) -
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Abstract
An apparatus for waking up a computer system is disclosed. The apparatus is electrically coupled to a south bridge, or a Platform Controller Hub (PCH), having a first USB host interface. The apparatus comprises: a second USB host interface; a switch element, for electrically coupling a USB keyboard to either the first USB host interface or the second USB host interface; a control element, electrically coupled to the second USB host interface and the switch element; and a wake-up element, electrically coupled to the control element, wherein when the computer system enters a suspend-to-ram mode, a suspend-to-disk mode or a shutdown mode, the control element controls the switch element to electrically couple the USB keyboard to the second USB host interface; wherein when a user inputs a password, the second USB host interface receives the password and transfers it to the control element, and if the password matches the predetermined password, the control element wakes up the computer system and controls the switch element to electrically couple the USB keyboard to the first USB host interface.
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