Patents by Inventor Craig Stuart MACKENZIE

Craig Stuart MACKENZIE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mobile wireless communications device including NFC antenna matching control circuit and associated methods
    Patent number: 9270337
    Abstract: A mobile wireless communications device includes a near-field communications (NFC) transceiver, NFC antennas and an NFC control circuit. The NFC transceiver generates a received signal strength based on a received signal from an adjacent NFC device. The NFC control circuit includes an antenna switch circuit coupled between the NFC transceiver and the NFC antennas. A capacitance sensing circuit is coupled to the NFC antennas to determine capacitance values thereof. A processor operates the antenna switch circuit based upon the received signal strength and the capacitance values.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: February 23, 2016
    Assignee: BLACKBERRY LIMITED
    Inventors: Lizhong Zhu, Libo Zhu, Robert Michael Philip Gondosch, Craig Stuart Mackenzie
  • MOBILE WIRELESS COMMUNICATIONS DEVICE INCLUDING NFC ANTENNA MATCHING CONTROL CIRCUIT AND ASSOCIATED METHODS
    Publication number: 20150126116
    Abstract: A mobile wireless communications device includes a near-field communications (NFC) transceiver, NEC antennas and an NFC control circuit. The NFC transceiver generates a received signal strength based on a received signal from an adjacent NFC device. The NFC control circuit includes an antenna switch circuit coupled between the NFC transceiver and the NFC antennas. A capacitance sensing circuit is coupled to the NFC antennas to determine capacitance values thereof. A processor operates the antenna switch circuit based upon the received signal strength and the capacitance values.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Inventors: Lizhong ZHU, Libo ZHU, Robert Michael Philip GONDOSCH, Craig Stuart MACKENZIE
  • Mobile wireless communications device including NFC antenna matching control circuit and associated methods
    Patent number: 8934837
    Abstract: A mobile wireless communications device includes a near-field communications (NFC) transceiver, NFC antennas and an NFC control circuit. The NFC transceiver generates a received signal strength based on a received signal from an adjacent NFC device. The NFC control circuit includes an antenna switch circuit coupled between the NFC transceiver and the NFC antennas. A capacitance sensing circuit is coupled to the NFC antennas to determine capacitance values thereof. A processor operates the antenna switch circuit based upon the received signal strength and the capacitance values.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: January 13, 2015
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Libo Zhu, Robert Michael Philip Gondosch, Craig Stuart MacKenzie
  • MOBILE WIRELESS COMMUNICATIONS DEVICE INCLUDING NFC ANTENNA MATCHING CONTROL CIRCUIT AND ASSOCIATED METHODS
    Publication number: 20140187153
    Abstract: A mobile wireless communications device includes a near-field communications (NFC) transceiver, NFC antennas and an NFC control circuit. The NFC transceiver generates a received signal strength based on a received signal from an adjacent NFC device. The NFC control circuit includes an antenna switch circuit coupled between the NFC transceiver and the NFC antennas. A capacitance sensing circuit is coupled to the NFC antennas to determine capacitance values thereof. A processor operates the antenna switch circuit based upon the received signal strength and the capacitance values.
    Type: Application
    Filed: January 3, 2013
    Publication date: July 3, 2014
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: LIZHONG ZHU, Libo ZHU, Robert Michael Philip GONDOSCH, Craig Stuart MACKENZIE
  • Mobile wireless communications device having a single bluetooth / wireless local area network antenna and associated methods
    Patent number: 8576826
    Abstract: A mobile wireless communications device includes a wireless local area network (WLAN) radio configured to generate a WLAN transmit signal, and a Bluetooth radio configured to generate a Bluetooth transmit signal. A circulator is coupled downstream of an antenna. A transmit path couples the WLAN radio and the Bluetooth radio to the circulator such that the WLAN radio and the Bluetooth radio are capable of transmitting simultaneously. In addition, a receive path also couples the WLAN radio and the Bluetooth radio to the circulator such that the WLAN radio and the Bluetooth radio are capable of receiving simultaneously.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: November 5, 2013
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Koon Hung Lee, Jun Xu, Libo Zhu, Fei He, Craig Stuart Mackenzie, Michael Stephen Corrigan, George Soliman Mankaruse, Perry Jarmuszewski
  • MOBILE WIRELESS COMMUNICATIONS DEVICE HAVING A SINGLE BLUETOOTH / WIRELESS LOCAL AREA NETWORK ANTENNA AND ASSOCIATED METHODS
    Publication number: 20120106525
    Abstract: A mobile wireless communications device includes a wireless local area network (WLAN) radio configured to generate a WLAN transmit signal, and a Bluetooth radio configured to generate a Bluetooth transmit signal. A circulator is coupled downstream of an antenna. A transmit path couples the WLAN radio and the Bluetooth radio to the circulator such that the WLAN radio and the Bluetooth radio are capable of transmitting simultaneously. In addition, a receive path also couples the WLAN radio and the Bluetooth radio to the circulator such that the WLAN radio and the Bluetooth radio are capable of receiving simultaneously.
    Type: Application
    Filed: May 26, 2011
    Publication date: May 3, 2012
    Applicants: Ontario, Canada)
    Inventors: Lizhong ZHU, Koon Hung LEE, Jun XU, Libo ZHU, Fei HE, Craig Stuart MACKENZIE, Michael Stephen CORRIGAN, George Soliman MANKARUSE, Perry JARMUSZEWSKI