System and method for power control in a universal serial bus
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United States of America Patent
Stats
-
Oct 7, 1997
Grant Date -
N/A
app pub date -
Oct 26, 1995
filing date -
Oct 26, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bus powered hub having a switch to control power distribution in a universal serial bus. A single switch is used to control power distribution to a number of peripherals connected to the bus powered hub. When the bus powered hub is initialized, the switch is activated thus providing power to the peripheral devices coupled to the bus powered hub. The system subsequently queries the peripheral devices to determine if an illegal configuration exists. If an illegal configuration exists, the system generates an error message to the user indicating the nature of the illegal configuration. If no illegal configuration exists, the system initializes the various peripheral devices.
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