Method and system for supplementing current during...

Details Method and system for supplementing current during... Method and system for supplementing current during...

2002-08-27

2008-03-04

Perveen, Rehana (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power sequencing

C713S340000, C323S266000, C323S267000, C320S137000, C320S138000

Reexamination Certificate

active

07340627

ABSTRACT:
A method and device for supplementing current from the USB bus for enumerating USB devices that require additional current beyond that allowable by USB bus specification. A chargeable power source, such as a capacitor or rechargeable battery, is supplied to the enumeration circuitry and is charged from the USB bus for an initial period of time. The charged power source is then discharged to supplement the allowable current available for enumeration during a second period of time. It is during this second period of time that the enumeration takes place. The circuitry may exist in the USB device or may be supplied separately as a power monitor or power maintenance chip or device.

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