Patents by Inventor Robert Alan Wadsworth

Robert Alan Wadsworth 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).

  • Structure and method with which to generate data background patterns for testing random-access-memories
    Patent number: 6477673
    Abstract: Programmability of the data background patterns used to test random-access-memories (RAMs) is accomplished by adding to the memory input/output (I/O) buffers of RAM memory, for each data bit of a data background pattern to be programmed, a programming mechanism and a selection mechanism. The programming mechanism is capable of programming a data bit of the data background pattern in accordance with a programming information signal provided to the RAM. The selection mechanism provides either the programmed data bit or a normal, application data bit to an input/output buffer of the RAM in accordance with whether the RAM is in a test mode or a normal operating mode, as indicated by a test control signal provided to the RAM.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: November 5, 2002
    Assignee: STMicroelectronics, Inc.
    Inventors: Richard J. Ferrant, Robert Alan Wadsworth