Electricity: battery or capacitor charging or discharging – Cell or battery charger structure
Reexamination Certificate
2010-01-19
2010-12-07
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Cell or battery charger structure
C320S155000
Reexamination Certificate
active
07847517
ABSTRACT:
A system and method for using a universal serial bus (USB) interface in a mobile device is provided that includes providing a battery charger operable to receive a voltage provided at the USB interface, the battery charger operable for charging a battery in the mobile device, and, a voltage regulator operable to receive a voltage provided at the USB interface, the voltage regulator used in powering the mobile device. The method also includes, detecting a USB bus voltage at the USB interface, measuring passage of a predetermined amount of time upon detecting the USB bus voltage, and disabling at least one of the voltage regulator and the battery charger if the predetermined amount of time expires before an enumeration acknowledgement signal is received at the USB interface.
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Guthrie Martin G. A.
Habicher Michael F.
Skarine Alexei
Veselic Dusan
Brown, Jr. J. Robert
Conley & Rose, P.C.
Research In Motion Limited
Tso Edward
Williams Arun
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