Patents by Inventor Mark Mayo

Mark Mayo 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).

  • Carry-select adder structure and method to generate orthogonal signal levels
    Patent number: 7908308
    Abstract: A Carry-Select Adder structure comprising a carry generation network and a multiplexer to select a particular pre-calculatad sum of a bit-group via orthogonal signal levels of a Hot-Carry signal provided by said carry generation network (21), wherein in order to provide orthogonal signal levels of said Hot-Carry signal, the carry generation network (21) comprises two carry lookahead trees (22, 23) working in parallel to each other, wherein a first carry lookahead tree (22) provides a first signal level of the Hot-Carry signal, and a second carry lookahead tree (23) provides a second, compared to the first signal level inverse signal level of the Hot-Carry signal. Furthermore a method to operate such a Carry-Select Adder is described.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: March 15, 2011
    Assignee: International Business Machines Corporation
    Inventors: Wilhelm Haller, Mark Mayo, Ricardo H. Nigaglioni, Hartmut Sturm
  • Carry-Select Adder Structure and Method to Generate Orthogonal Signal Levels
    Publication number: 20080046498
    Abstract: A Carry-Select Adder structure comprising a carry generation network and a multiplexer to select a particular pre-calculatad sum of a bit-group via orthogonal signal levels of a Hot-Carry signal provided by said carry generation network (21), wherein in order to provide orthogonal signal levels of said Hot-Carry signal, the carry generation network (21) comprises two carry lookahead trees (22, 23) working in parallel to each other, wherein a first carry lookahead tree (22) provides a first signal level of the Hot-Carry signal, and a second carry lookahead tree (23) provides a second, compared to the first signal level inverse signal level of the Hot-Carry signal. Furthermore a method to operate such a Carry-Select Adder is described.
    Type: Application
    Filed: May 15, 2007
    Publication date: February 21, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Wilhelm Haller, Mark Mayo, Ricardo H. Nigaglioni, Hartmut Sturm
  • Combination weapon
    Patent number: D418896
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: January 11, 2000
    Assignee: AAI Corporation
    Inventors: Paul Shipley, Frederick Stephen Brown, Sr., Christopher J. Yaniger, Mark Mayo, George Ronald Christ, David O. Cleveland