Patents by Inventor Cheryl L. Owen

Cheryl L. Owen 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).

  • Systems and methods for injection of test jitter in data bit-streams
    Patent number: 7184469
    Abstract: A method for injecting test jitter in a data bit stream comprises modulating first and second voltage generators to control a rise and fall times of an output signal, respectively. A pair of input voltages are received by a differential pair. At least one current sink device is operated using a first control voltage provided by at least one of the voltage generators to provide an output voltage in response to the input voltages received by the differential pair. A plurality of current sources are operated to provide the output signal using a reference voltage provided by one of the voltage generators in response to the input voltages received by the differential pair, wherein simultaneous variation of the rise and fall times together with the input voltages define the output signal and jitter output by the current sink device and the current sources.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: February 27, 2007
    Assignee: Verigy Pte. Ltd.
    Inventors: Francis Joseph, Klaus D. Hilliges, Cheryl L. Owen
  • Systems and methods for injection of test jitter in data bit-streams
    Publication number: 20040156429
    Abstract: A method for injecting test jitter in a data bit stream comprises modulating first and second voltage generators to control a rise and fall times of an output signal, respectively. A pair of input voltages are received by a differential pair. At least one current sink device is operated using a first control voltage provided by at least one of the voltage generators to provide an output voltage in response to the input voltages received by the differential pair. A plurality of current sources are operated to provide the output signal using a reference voltage provided by one of the voltage generators in response to the input voltages received by the differential pair, wherein simultaneous variation of the rise and fall times together with the input voltages define the output signal and jitter output by the current sink device and the current sources.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 12, 2004
    Inventors: Francis Joseph, Klaus D. Hilliges, Cheryl L. Owen