System and method for power control in a universal serial bus

Details System and method for power control in a universal serial bus System and method for power control in a universal serial bus

1995-10-26

1997-10-07

Harvey, Jack B.

395492, G06F 906, G06F 1520, G06F 1556

Patent

active

056758138

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.

REFERENCES:
patent: 4747041 (1988-05-01), Engel et al.
patent: 5359540 (1994-10-01), Ortiz
patent: 5410713 (1995-04-01), White et al.
patent: 5506790 (1996-04-01), Nguyen

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