Patents by Inventor Paul W. Wong

Paul W. Wong 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).

  • Method and apparatus for injecting errors into an array built-in self-test
    Patent number: 5668816
    Abstract: An improved method and apparatus are provided for injecting errors in an array built-in self-test (ABIST) for an array in an integrated circuit driven by at least one controller. The error generation and insertion apparatus is used with the ABIST and includes registers that are set for selecting error injection; for selecting a predetermined ABIST test pattern; and for selecting an address in the array for injecting an error in the predetermined ABIST test pattern. An ABIST pattern is compared with the selected predetermined ABIST test pattern, and the selected address in the array for injecting the error is compared with an ABIST address for the ABIST pattern. The ABIST data is inverted responsive to the selected address in the array for injecting the error equal to the ABIST address. A single bit error or a multiple bit error is selected for an address or all addresses of the array.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: September 16, 1997
    Assignee: International Business Machines Corporation
    Inventors: Steven Michael Douskey, Paul W. Wong