Patents by Inventor Christopher Joel Hannaford

Christopher Joel Hannaford 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: 9297830
    Abstract: A high voltage connector assembly includes a plurality of pin assemblies, each of the plurality of pin assemblies having a first end and a second end. The first end of each of the plurality of pin assemblies is configured to releasably electrically engage a load board. A plurality of pin pads, wherein the second end of each of the plurality of pin assemblies is configured to electrically engage a pin pad included within the plurality of pin pads. A plurality of connector pads are electrically coupled to the plurality of pin pads, wherein each of the plurality of connector pads is configured to be electrically coupled to a wire-based conductor included within a plurality of wire-based conductors. A potting compound is configured to encapsulate the plurality of connector pads.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: March 29, 2016
    Assignee: Xcerra Corporation
    Inventors: Richard McCarthy, Christopher Joel Hannaford, Lisette J. Zarzalejo, Roger H. Therrien
  • Publication number: 20140203833
    Abstract: A high voltage connector assembly includes a plurality of pin assemblies, each of the plurality of pin assemblies having a first end and a second end. The first end of each of the plurality of pin assemblies is configured to releasably electrically engage a load board. A plurality of pin pads, wherein the second end of each of the plurality of pin assemblies is configured to electrically engage a pin pad included within the plurality of pin pads. A plurality of connector pads are electrically coupled to the plurality of pin pads, wherein each of the plurality of connector pads is configured to be electrically coupled to a wire-based conductor included within a plurality of wire-based conductors. A potting compound is configured to encapsulate the plurality of connector pads.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 24, 2014
    Applicant: LTX-Credence Corporation
    Inventors: Richard McCarthy, Christopher Joel Hannaford, Lisette J. Zarzalejo, Roger H. Therrien
  • Patent number: 8415941
    Abstract: A method for identifying and reducing spurious frequency components is provided. A method in accordance with at least one embodiment of the present disclosure may include generating a digital sinusoidal waveform at a direct digital synthesizer (DDS) and receiving the digital sinusoidal waveform at an audio digital-to-analog converter. The method may further include converting the digital sinusoidal waveform to an analog sinusoidal waveform containing spurious frequency components, combining the analog sinusoidal waveform with an analog distortion correction waveform to generate a composite output waveform and receiving the composite output waveform at notch filter circuitry. The method may also include filtering the composite output waveform to generate a filtered composite output waveform and amplifying a difference between the filtered composite output waveform and a signal from a circuit-under-test (CUT) to generate an amplified analog signal.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: April 9, 2013
    Assignee: LTX-Credence Corporation
    Inventors: Solomon Max, Christopher Joel Hannaford, R. Warren Necoechea
  • Patent number: 8269480
    Abstract: A method for identifying and reducing spurious frequency components is provided. A method in accordance with at least one embodiment of the present disclosure may include generating a digital sinusoidal waveform at a direct digital synthesizer (DDS) and receiving the digital sinusoidal waveform at an audio digital-to-analog converter. The method may further include converting the digital sinusoidal waveform to an analog sinusoidal waveform containing spurious frequency components, combining the analog sinusoidal waveform with an analog distortion correction waveform to generate a composite output waveform and receiving the composite output waveform at notch filter circuitry. The method may also include filtering the composite output waveform to generate a filtered composite output waveform and amplifying a difference between the filtered composite output waveform and a signal from a circuit-under-test (CUT) to generate an amplified analog signal.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: September 18, 2012
    Assignee: LTX-Credence Corporation
    Inventors: Solomon Max, Christopher Joel Hannaford, R. Warren Necoechea
  • Patent number: 8239434
    Abstract: A system, method, and apparatus for distortion analysis is provided. A method in accordance with at least one embodiment of the present disclosure may include receiving a clock frequency at a direct digital synthesizer (DDS) and generating at least one stream of phase numbers via said DDS. The method may further include generating a digital sine wave using, at least in part, said clock frequency and said at least one stream of phase numbers. Of course, additional implementations are also within the scope of the present disclosure.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: August 7, 2012
    Assignee: LTX Corporation
    Inventors: Solomon Max, Christopher Joel Hannaford
  • Publication number: 20110193547
    Abstract: A method for identifying and reducing spurious frequency components is provided. A method in accordance with at least one embodiment of the present disclosure may include generating a digital sinusoidal waveform at a direct digital synthesizer (DDS) and receiving the digital sinusoidal waveform at an audio digital-to-analog converter. The method may further include converting the digital sinusoidal waveform to an analog sinusoidal waveform containing spurious frequency components, combining the analog sinusoidal waveform with an analog distortion correction waveform to generate a composite output waveform and receiving the composite output waveform at notch filter circuitry. The method may also include filtering the composite output waveform to generate a filtered composite output waveform and amplifying a difference between the filtered composite output waveform and a signal from a circuit-under-test (CUT) to generate an amplified analog signal.
    Type: Application
    Filed: April 20, 2011
    Publication date: August 11, 2011
    Applicant: LTX-Credence Corporation
    Inventors: Solomon Max, Christopher Joel Hannaford, R. Warren Necoechea
  • Publication number: 20090063071
    Abstract: A system, method, and apparatus for distortion analysis is provided. A method in accordance with at least one embodiment of the present disclosure may include receiving a clock frequency at a direct digital synthesizer (DDS) and generating at least one stream of phase numbers via said DDS. The method may further include generating a digital sine wave using, at least in part, said clock frequency and said at least one stream of phase numbers. Of course, additional implementations are also within the scope of the present disclosure.
    Type: Application
    Filed: July 9, 2008
    Publication date: March 5, 2009
    Inventors: Solomon Max, Christopher Joel Hannaford
  • Publication number: 20090033375
    Abstract: A method for identifying and reducing spurious frequency components is provided. A method in accordance with at least one embodiment of the present disclosure may include generating a digital sinusoidal waveform at a direct digital synthesizer (DDS) and receiving the digital sinusoidal waveform at an audio digital-to-analog converter. The method may further include converting the digital sinusoidal waveform to an analog sinusoidal waveform containing spurious frequency components, combining the analog sinusoidal waveform with an analog distortion correction waveform to generate a composite output waveform and receiving the composite output waveform at notch filter circuitry. The method may also include filtering the composite output waveform to generate a filtered composite output waveform and amplifying a difference between the filtered composite output waveform and a signal from a circuit-under-test (CUT) to generate an amplified analog signal.
    Type: Application
    Filed: July 9, 2008
    Publication date: February 5, 2009
    Inventors: Solomon Max, Christopher Joel Hannaford, R. Warren Necoechea