HUB, OPERATION SYSTEM, AND CONTROL METHOD THEREOF
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United States of America Patent
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Issued Date -
Sep 1, 2016
app pub date -
Apr 30, 2015
filing date -
Feb 26, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A hub including an up-stream port, at least one down-stream port, a state-determining unit, and a control unit is provided. The up-stream port is configured to be coupled to a host device. The down-stream port is configured to be coupled to at least one peripheral device. The state-determining unit is coupled to the down-stream port and generates a determination result according to a level of a pin of the down-stream port. The control unit is coupled between the up-stream port and the state-determining unit. When the host device sends a sleep request, the control unit determines whether the peripheral device is operating in a specific mode according to the determination result. When the peripheral device is operating in the specific mode, the control unit provides an unready response to the host device.
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