Supplying standby voltage to memory and wakeup circuitry to wake a computer from a low power mode
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United States of America Patent
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-
Oct 23, 2001
Issued Date -
N/A
app pub date -
Dec 30, 1997
filing date -
Dec 29, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An improved power management system provides a dual mode power supply that supplies normal voltages and standby voltages. When the computer is placed in a power saving mode, the power supply is controlled to cease supplying the normal voltages to conserve power. While the computer is in the power saving mode, the standby power is supplied to specific devices that may be involved in waking the computer. When an I/O device or another device detects computer activity while in the power saving mode, a wake signal is generated and input to a power management device. The power management device then controls the power supply to supply the normal voltages to wake the computer.
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