Patents by Inventor Christopher Eugene Snyder

Christopher Eugene Snyder 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).

  • Patent number: 9179411
    Abstract: A system and method for controlling envelope tracking in a transmitter with closed loop power control, including up-converting and pre-amplifying a baseband signal to a pre-amplified RF signal, amplifying the pre-amplified RF signal, converting the envelope of the baseband signal into a shaped envelope signal, adjusting the gain of the pre-amplified RF signal, and adjusting the shape of the envelope signal in response to changes in the gain of the pre-amplified RF signal.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: November 3, 2015
    Assignee: BLACKBERRY LIMITED
    Inventors: Stephen Arnold Devison, Christopher Eugene Snyder
  • Patent number: 8942656
    Abstract: In a radio receiver, a method of reducing second order distortion components, involves at a first mixer, mixing an input signal with an oscillator signal to generate an I component of a received radio signal; at a second mixer, mixing the input signal with a phase shifted oscillator signal to generate a Q component of the received radio signal; where the I and Q components of the received signal have a receive bandwidth; computing an estimate of second order distortion components as a power output of the I and Q components between approximately the receive bandwidth and twice the receive bandwidth of the received radio signals; and adjusting an operational parameter of the radio receiver to reduce the estimated value of second order distortion components. This abstract is not to be considered limiting.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 27, 2015
    Assignee: BlackBerry Limited
    Inventors: Tajinder Manku, Christopher Eugene Snyder, Stephen Arnold Devison
  • Publication number: 20150017931
    Abstract: A system and method for controlling envelope tracking in a transmitter with closed loop power control, including up-converting and pre-amplifying a baseband signal to a pre-amplified RF signal, amplifying the pre-amplified RF signal, converting the envelope of the baseband signal into a shaped envelope signal, adjusting the gain of the pre-amplified RF signal, and adjusting the shape of the envelope signal in response to changes in the gain of the pre-amplified RF signal.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 15, 2015
    Inventors: Stephen Arnold DEVISON, Christopher Eugene SNYDER
  • Publication number: 20140273905
    Abstract: In a radio receiver, a method of reducing second order distortion components, involves at a first mixer, mixing an input signal with an oscillator signal to generate an I component of a received radio signal; at a second mixer, mixing the input signal with a phase shifted oscillator signal to generate a Q component of the received radio signal; where the I and Q components of the received signal have a receive bandwidth; computing an estimate of second order distortion components as a power output of the I and Q components between approximately the receive bandwidth and twice the receive bandwidth of the received radio signals; and adjusting an operational parameter of the radio receiver to reduce the estimated value of second order distortion components. This abstract is not to be considered limiting.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Tajinder MANKU, Christopher Eugene SNYDER, Stephen Arnold DEVISON
  • Patent number: 8830859
    Abstract: Method and devices for use in a wireless device are described herein. A signal is received over a plurality of time segments, the signal over each time segment including a plurality of resource element blocks. For each time segment, at least one resource element block is selected from the plurality of resource element blocks of the time segment based on information determined about the time segment. For each time segment, a power value associated with the at least one resource element block of the time segment is determined. For each time segment, a gain adjustment value to adjust the gain of the time segment or one or more subsequent time segments of the signal is determined based upon the power value associated with the at least one resource element block.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: September 9, 2014
    Assignee: BlackBerry Limited
    Inventors: Jianfeng Weng, Yangwen Liang, Xing Qian, Qing Feng Xu, Christopher Eugene Snyder
  • Patent number: 8824535
    Abstract: There are disclosed systems and methods that dynamically vary the word length of data being transmitted through a digital interface. In one embodiment, the method comprises: (i) obtaining at least one parameter indicative of a quality of a signal; (ii) if the at least one parameter indicates that the quality of the signal is above a threshold, then transmitting the data as a number of digital words at a first predetermined word length; (ii) if the at least one parameter indicates that the quality of the signal is below the threshold, then transmitting the data as a number of digital words at a second predetermined word length. The second predetermined word length is different from the first predetermined word length.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: September 2, 2014
    Assignee: BlackBerry Limited
    Inventors: Jianfeng Weng, Yangwen Liang, Xing Qian, Qing Feng Xu, Christopher Eugene Snyder
  • Publication number: 20130315288
    Abstract: There are disclosed systems and methods that dynamically vary the word length of data being transmitted through a digital interface. In one embodiment, the method comprises: (i) obtaining at least one parameter indicative of a quality of a signal; (ii) if the at least one parameter indicates that the quality of the signal is above a threshold, then transmitting the data as a number of digital words at a first predetermined word length; (ii) if the at least one parameter indicates that the quality of the signal is below the threshold, then transmitting the data as a number of digital words at a second predetermined word length. The second predetermined word length is different from the first predetermined word length.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 28, 2013
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: JIANFENG WENG, YANGWEN LIANG, XING QIAN, QING FENG XU, CHRISTOPHER EUGENE SNYDER
  • Publication number: 20130301428
    Abstract: Method and devices for use in a wireless device are described herein. A signal is received over a plurality of time segments, the signal over each time segment including a plurality of resource element blocks. For each time segment, at least one resource element block is selected from the plurality of resource element blocks of the time segment based on information determined about the time segment. For each time segment, a power value associated with the at least one resource element block of the time segment is determined. For each time segment, a gain adjustment value to adjust the gain of the time segment or one or more subsequent time segments of the signal is determined based upon the power value associated with the at least one resource element block.
    Type: Application
    Filed: May 10, 2012
    Publication date: November 14, 2013
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Jianfeng WENG, Yangwen LIANG, Xing QIAN, Qing Feng XU, Christopher Eugene SNYDER
  • Publication number: 20130061280
    Abstract: An apparatus, and an associated method, provides for synchronized play out of media at separate devices. An invitation is generated at a device and communicated to a second device to invite a user of the second device to share media streaming of common media content pursuant to a common media experience. Control commands generated at one of the devices is communicated to another of the devices upon a bearer control channel to cause control of the media play out in a common manner at each of the devices.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 7, 2013
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Grant Henry Robert Bartnik, Arun Prasath Sivakumaran, Christopher Eugene Snyder