Research in Motion Corporation

Blackberry Corporation

Nortel Networks Corporation

Runbo Fu

Xin Jin

Wen Zhao

Farhad Ahmed

Stewart Charles Morris

Jorgen Staal Nielsen

Edwin Llanos

Karen A Rudnitski

Pokin Yeung

Ming Jian

Padakandla Krishna Rao

Jonathan Halse

Hongchang Tian

Jason Tyler Griffin

Mihal Lazaridis

Xixian Chen

Asif Hossain

Dietmar Frank Wennemer

Marcelo Varanda

Krishna Rao

Ray Dikun

Krishna Padakandla Rao

Jason Griffin

A method and apparatus for creating a communication group for a given type of communication using a mobile station for initiating communication sessions of the given type among mobile stations are disclosed. A group definition for determining members of the new communication group is composed from one or more contacts from the electronic address book such as by selecting from the address book using the mobile station. The group definition may include logical operators to define the combination of contacts. A name may be specified for the new group. The assembly of the list of members may be performed by the mobile station, a communication network server for maintaining groups (e.g. a Group and List Management Server (GLMS)) or an email server.

Method and apparatus for creating a communication group using an address book

An apparatus and method for telephony tone signal and character code generation for QWERTY keyboards includes a QWERTY style keyboard, a processor and a keyboard mode control software module. The QWERTY style keyboard has a plurality of letter keys, wherein each letter key is configured to generate a unique input signal. The processor is coupled to the keyboard and is configured to convert each unique input signal generated by the letter keys into a character code and/or a telephony tone signal. The keyboard mode control software module operates on the processor, and controls whether the processor converts the unique input signals from the letter keys into character codes or telephony tone signals.

Multifunctional keyboard for a mobile communication device and method of operating the same

Various embodiments are described for data communication between a host device and a mobile communication device having two processors. In a first mode of operation, data communication occurs between the host device and a main processor of the mobile device. In a second mode of operation, data communication occurs between the host device and a communications processor of the mobile device. Some of the embodiments also implement power transfer from the host device to the mobile device.

Method and mobile device for operating in different data transfer modes

A method and apparatus for creating a communication group using an electronic address book to facilitate Push-to-Talk over Cellular (PoC) group communication sessions are disclosed. A group definition for determining members of the new PoC Group is composed from one or more contacts from the electronic address book such as by selecting from the address book using the mobile station. The group definition may include logical operators to define the combination of contacts. A name may be specified for the new group. The assembly of the PoC Group list of members may be performed by the mobile station, a communication network server for maintaining PoC Groups (e.g. a Group and List Management Server (GLMS)) or an email server.

A system for enhancing functionality of a mobile device comprising: the mobile device, wherein the mobile device includes: a radio subsystem; a processor adapted to interact with the radio subsystem; a user interface; a short range communications system; and a battery adapted to power the mobile device; and an accessory adapted to communicate with the mobile device, the accessory including: at least one processor; a radio subsystem communicating with the processor; and a short range communications system adapted to communicate with the short range communications system of the mobile device, wherein the radio subsystem of the mobile device differs from the radio subsystem of the accessory.

Radio accessory for a mobile device

A system and method for obtaining a frequency error estimate representing the difference between a reference frequency and the frequency of a space-time transmit diversity signal is disclosed. The method includes taking the correlation of total sums, comprised of partial sums taken in defined first and second intervals, to represent the frequency error as the imaginary component of the correlation function.

Method and apparatus for frequency tracking in a space time transmit diversity receiver

An electrical device is powered by a battery. The device includes transition phase determining circuitry operatively connected to the battery to determine that the battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery. Battery capacity determining circuitry is operatively connected to the transition phase determining circuitry and configured to determine, in response the transition phase determining circuitry determining that the battery is in the transition phase, a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage. The transition phase determining circuitry is further configured to determine an end of the transition phase based on the transition phase battery capacity model and a non-transition battery capacity model of capacity-vs.-voltage yielding the same capacity value for a given measured voltage of the battery.

Method for determining battery capacity

A system and method for obtaining a frequency error estimate representing the difference between a reference frequency and the frequency of a space-time transmit diversity signal is disclosed herein. The method includes taking the correlation of total sums, comprised of partial sums taken in defined first and second intervals, to represent the frequency error as the imaginary component of the correlation function.

An electrical device is powered by a battery. The device includes transition phase determining circuitry operatively connected to the battery to determine that the battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery. Battery capacity determining circuitry is operatively connected to the transition phase determining circuitry and configured to determine, in response to the transition phase determining circuitry determining that the battery is in the transition phase, a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage. The transition phase determining circuitry is further configured to determine an end of the transition phase based on the transition phase battery capacity model and a non-transition battery capacity model of capacity-vs.-voltage yielding the same capacity value for a given measured voltage of the battery.

The invention relates to a system and method for controlling implementation of a command to a NAND memory device. The method comprises: monitoring an input/output (I/O) bus connected to the NAND memory device for an assertion of a write command for the NAND memory device. Upon detection of the write command, the method evaluates a destination address associated with the write command. If the destination address is not a restricted address for the NAND memory device, then the method allows the write command to modify the contents; and if the destination address is a restricted address for the NAND memory device, then the method prevents assertion of the write command on the contents.

System and method for controlling access to a memory device of an electronic device

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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Kanata, Canada

Runbo Fu