Patents by Inventor Michael Frank Carnevale

Michael Frank Carnevale 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).

  • Data strobe signals (DQS) for high speed dynamic random access memories (DRAMs)
    Patent number: 6909315
    Abstract: Embodiments are provided in which a method for delaying a strobe signal for a first pre-specified amount of time is described. A test signal is sent through a first number of delay books and a test is done as to whether it takes the test signal approximately a second pre-specified amount of time to pass the first number of delay books. Then, the number of delay books is increased or decreased by one at a time and until the number of delay books reaches a second number where it takes the test signal approximately the second pre-specified amount of time to pass the second number of delay books. From the second number, a third number of delay books is determined which is needed to cause a propagation delay approximately equal to the first pre-specified amount of time. Finally, the strobe signal is passed through the third number of delay books.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: June 21, 2005
    Assignee: International Business Machines Corporation
    Inventors: Michael Frank Carnevale, Paul Allen Ganfield, Daniel Frank Moertl