Patents by Inventor Marsha R. Moskowitz

Marsha R. Moskowitz 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).

  • Space compression technique for pseudo-exhaustive self-testing of digital electronic circuits
    Patent number: 5309447
    Abstract: Compaction of the response signals produced by separate sets of sub-circuits (12.sub.i) within a digital circuit (10) under test is accomplished by first analyzing each response signal produced by a corresponding set of sub-circuits (by way of a logic analyzer (16,18)) to determine if the response signal has a particular pattern. A pattern bit is then set in accordance with the response signal which has the particular pattern. The pattern bits are then compacted by a set of daisy-chained time compactors (20), each compactor serving to exclusively OR the pattern bit from a corresponding logic analyzer (16,18) with a compacted bit generated previously by an upstream compactor.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: May 3, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Marsha R. Moskowitz, Eleanor Wu