Patents by Inventor John Freeseman

John Freeseman 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).

  • Publication number: 20070195618
    Abstract: A method and apparatus for filtering failures due to must-repair rows or columns from a memory test fail summary image includes current available redundant row failure counts respectively associated with rows of a memory device and current available redundant column failure counts associated with columns of the device. Respective failure counts are preloaded with the respective values of redundant rows and columns available for repairing the device. When failures in memory cells of the device are encountered, either during test, or during scan of an earlier generated error image, the row and column failure counts associated with the rows and columns containing the memory cell failures are decremented. At the end of a test, the value of the failure counts indicates whether the corresponding row or column contain any failures at all, whether the corresponding row or column is designated as a “must-repair” row or column, and otherwise how many errors the corresponding row or column contain.
    Type: Application
    Filed: February 17, 2006
    Publication date: August 23, 2007
    Inventors: Alan Krech, Stephen Jordan, John Freeseman
  • Patent number: 7231573
    Abstract: A delay management system in a computer system includes a delay manager and a first storage element that stores a delay time. The delay manager is configured to receive a series of delay values and respond to each delay value in the series of delay values by providing a corresponding delay time value. The delay time is updated to the corresponding delay time value if the corresponding delay time value is greater than the delay time.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: June 12, 2007
    Assignee: Verigy Pte. Ltd.
    Inventors: Alan Howard Davis, John Freeseman
  • Publication number: 20040153890
    Abstract: A delay management system in a computer system includes a delay manager and a first storage element that stores a delay time. The delay manager is configured to receive a series of delay values and respond to each delay value in the series of delay values by providing a corresponding delay time value. The delay time is updated to the corresponding delay time value if the corresponding delay time value is greater than the delay time.
    Type: Application
    Filed: December 20, 2002
    Publication date: August 5, 2004
    Inventors: Alan Howard Davis, John Freeseman