Patents by Inventor Joel W. Gannett

Joel W. Gannett 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: 8625986
    Abstract: A method and system to economically monitor an optical OOK signal that can detect perceptible changes in signal quality and identify the type of optical impairment causing the change. The invention requires a new and novel combination of known techniques to create an eye diagram of the transmitted pulse in a wavelength division multiplexing systems and then removing the noise from the eye diagram. Economy of operation is achieve by using asynchronous sampling techniques for generating the eye diagram. The resulting “cleaner” eye diagram is then analyzed to identify any changes in performance. In the preferred embodiment, the analysis is conducted on histograms generated from eye diagram, the histograms are computed at a number of points across the optical signal pulse period.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: January 7, 2014
    Assignee: TTI Inventions A LLC
    Inventors: Ronald A. Skoog, Thomas Clyde Banwell, Haim Kobrinski, Sarry Habiby, Joel W. Gannett, Russell Fischer
  • Publication number: 20080075457
    Abstract: A method and system to economically monitor an optical OOK signal that can detect perceptible changes in signal quality and identify the type of optical impairment causing the change. The invention requires a new and novel combination of known techniques to create an eye diagram of the transmitted pulse in a wavelength division multiplexing systems and then removing the noise from the eye diagram. Economy of operation is achieve by using asynchronous sampling techniques for generating the eye diagram. The resulting “cleaner” eye diagram is then analyzed to identify any changes in performance. In the preferred embodiment, the analysis is conducted on histograms generated from eye diagram, the histograms are computed at a number of points across the optical signal pulse period.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 27, 2008
    Inventors: Ronald A. Skoog, Thomas Banwell, Haim Kobrinski, Sarry Habiby, Joel W. Gannett, Russell Fischer
  • Patent number: 4551838
    Abstract: In order to test a digital circuit, such as a digital logic circuit (e.g., 100), for faults, during the first three cycles of a test operation of many cycles in duration, a predetermined input word is delivered to the input terminals of the logic circuit. Throughout the remaining cycles of the test operation, each output terminal of the circuit is connected by an input multiplexer (e.g., 200) to a fixed different one (or more) of the input terminals, whereby output of each cycle serves as input for the next cycle of the test operation. A counter (e.g., 300) counts the number of test operation cycles and sends an enabling signal to a signature detector (e.g., 400) when the counter counts a predetermined number of test cycles. Finally, in response to this enabling signal, each output terminal's output bit developed during the last cycle of the test operation is compared by the signature detector (e.g., 400) with the corresponding "correct" bit.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: November 5, 1985
    Assignee: AT&T Bell Laboratories
    Inventor: Joel W. Gannett