Electrical computers and digital processing systems: support – Computer power control – Having power source monitoring
Reexamination Certificate
2011-07-19
2011-07-19
Lee, Thomas (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
Having power source monitoring
C713S300000, C713S320000, C713S330000, C455S572000, C455S573000
Reexamination Certificate
active
07984318
ABSTRACT:
A handheld communication device to communicate with a remote universal serial bus (USB) host controller via an integrated power and data port is provided. The device includes a microprocessor communicating with a power management integrated circuit (IC), wherein said microprocessor requires greater than 100 mA to be enumerated with the USB host controller. The device includes a USB microcontroller communicating with the USB host controller via a multiplexer and integrated power and data port, wherein the USB microcontroller requires less than 100 mA to be enumerated with the USB host controller, and wherein if a current available from the rechargeable battery is below a specified threshold required to power up the microprocessor, then the USB microcontroller performs USB enumeration with the USB host controller.
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Fu Runbo
Halse Jonathan
Morris Stewart
Brown Michael J
Brown, Jr. J. Robert
Conley & Rose, P.C.
Lee Thomas
Research In Motion Limited
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