METHOD AND APPARATUS FOR DYNAMIC POWER MANAGEMENT CONTROL USING PARALLEL BUS MANAGEMENT PROTOCOLS
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United States of America Patent
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Issued Date -
Oct 1, 2009
app pub date -
Mar 26, 2009
filing date -
Mar 28, 2008
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Abandoned
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Abstract
An apparatus for on-demand power management includes an I/O parallel communication master device, peripheral devices that communicate with the master along the parallel bus, and a power manager that arbitrates the parallel bus. The power manager also manages voltage regulation and clock sources to the peripheral devices, with the ability of placing the peripheral devices in an inactive state, or in any number of active states as a means to conserve energy. In some embodiments, the I/O parallel communication master device acts as if the peripheral devices are always in the highest activity state, and the power manager manages the communications to and from the peripheral devices and the power management of the peripheral devices to minimize energy consumption and reduce system latency.
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