Electrical computers and digital data processing systems: input/ – Intrasystem connection – Protocol
Reexamination Certificate
2009-11-06
2011-10-18
Cleary, Thomas J (Department: 2111)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Protocol
C710S008000, C710S011000, C710S014000, C710S060000
Reexamination Certificate
active
08041866
ABSTRACT:
The disclosure describes a system and method for controlling interfacing parameters for a device when connected to a host. In the system and method, the communications interface is configurable to be in operable connection to a host using a microprocessor in the device having a first bus controller and a second bus controller, the second bus controller external to the microprocessor. The method comprises: establishing an initial connection by the device; conducting negotiations by the device to set a first data transmission rate for the device for the initial connection utilizing a communication bus controller contained in the microprocessor; and after detecting completion of enumeration of the device, re-establishing the connection by the device using the second bus controller in the device that processes the communications at a second transmission rate that is higher than the first data transmission rate.
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“Universal Serial Bus Specification Revision 2.0”, USB Implementers Forum, Apr. 27, 2000.
Barake Omar
Goldsmith Michael
Mailloux Jerry
Matton Maxime
Winger Lyall
Cleary Thomas J
McCarthy Tétrault LLP
Research in Motion Limited
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