Patents Represented by Attorney R. A. Ryan

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  • Two's complement pipeline multiplier
    Patent number: 3956622
    Abstract: The present invention includes a substantially modular pipeline multiplier for directly forming the correct final product of a 2's complement data word and a sign and magnitude coefficient word. In particular, the present invention includes circuitry for inserting logic 1 signals into the computations as sign extensions during multiplication whenever the data word is a negative 2's complement number.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: May 11, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Richard Francis Lyon