Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2004-05-05
2008-11-18
Suryawanshi, Suresh K (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
C713S310000, C713S320000
Reexamination Certificate
active
07454630
ABSTRACT:
An invention is provided for limiting power during an unconfigured state of a USB device. The invention includes a first voltage regulator, which supplies a first voltage, in electrical communication with internal device logic of a USB device. A second voltage regulator is also included that supplies a second voltage that is higher than the first voltage. In addition, a current limiting resistor is included. The current limiting resistor is coupled to an output of the second voltage regulator and is further in electrical communication with the internal device logic of the USB device. The current limiting resistor is configured to allow a maximum current of 100 mA from being provided to the internal device logic of a USB device from the second voltage regulator.
REFERENCES:
patent: 5675813 (1997-10-01), Holmdahl
patent: 6253329 (2001-06-01), Kang
patent: 6507172 (2003-01-01), Sherman
patent: 6715071 (2004-03-01), Ono et al.
patent: 6810481 (2004-10-01), Kawade et al.
patent: 7340627 (2008-03-01), Harvey
patent: 2004/0063464 (2004-04-01), Akram et al.
Ong Ann Tiong
Wang Xun Zhang
Zhou James Jianyun
Adaptec, Inc.
Martine & Penilla & Gencarella LLP
Suryawanshi Suresh K
LandOfFree
System and method for interconnecting downstream USB ports... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for interconnecting downstream USB ports..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for interconnecting downstream USB ports... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4020266