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US 8,283,897 B2Granted
Method and apparatus for handling a charging state in a mobile electronic device
AssigneeResearch In Motion Limited
InventorsDusan Veselic, Alexei Skarine
Life of this patent
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Abstract
The present invention is directed at a method of handling a device charging state for a Universal Serial Bus (USB) connected mobile electronic device comprising the steps of sensing a presence of a bus voltage; sensing an enumeration acknowledgement signal between the device and a USB host; and transmitting a signal to instruct the device to enter the device charging state.
Claims16
A method for charging a mobile device, the method comprising:
- enabling a battery charger upon coupling the mobile device to a Universal Serial Bus (USB) host;
- and
- disabling the battery charger if enumeration between the mobile device and the USB host is not acknowledged within a first predetermined time.
A Universal Serial Bus (USB) device comprising:
- a battery charger operable to charge a mobile device upon the mobile device being connected to a USB host, wherein the battery charger is disabled if enumeration between the mobile device and the USB host is not acknowledged within a first predetermined time.
Dependencies are inferred from the claim text.