Method and apparatus to directly access a peripheral device when central processor operations are suspended
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United States of America Patent
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Oct 5, 2004
Grant Date -
Aug 22, 2002
app pub date -
Dec 27, 2000
filing date -
Dec 27, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for facilitating direct access to computer resources by a peripheral device while the computer's CPU is in a sleeping state. A peripheral device having a circuit to detect the power management state of a central processor, a first interface to couple the device to the central processor if the circuit detects the first power management state, and a second interface to couple the device to a peripheral device if the circuit detects the second power management state.
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