Patents by Inventor Curtis R. Alexander

Curtis R. Alexander 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).

  • Standby SBC backplane
    Patent number: 6708286
    Abstract: A computer system comprising a first computer coupled to a primary PCI bus via a first PCI bus switch and a second computer coupled to the primary PCI bus via a second PCI bus switch. A monitor system is coupled to both the first and second computers as well as the first and second PCI bus switches. In the event of a malfunction in the first computer, the monitor system decouples the first computer from the primary PCI bus, by opening the first PCI bus switch and coupling the second computer to the primary PCI bus by closing the second PCI bus switch.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: March 16, 2004
    Assignee: I-Bue Corporation
    Inventors: Curtis R. Alexander, Alonso Perez, Thang Doan
  • Standby SBC backplate
    Patent number: 6510529
    Abstract: A computer system employs a first computer; a first bus switch coupled to the first computer; a data bus coupled to the first computer via the first bus switch; a second computer; a second bus switch coupled to the second computer, the data bus being coupled to the second computer through the second bus switch; and a monitor system coupled to the first computer, to the first bus switch, and to the second bus switch.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: January 21, 2003
    Assignee: I-Bus
    Inventors: Curtis R. Alexander, Alonso Perez, Thang Doan
  • Standby SBC backplane
    Publication number: 20030005357
    Abstract: A computer system comprising a first computer coupled to a primary PCI bus via a first PCI bus switch and a second computer coupled to the primary PCI bus via a second PCI bus switch. A monitor system is coupled to both the first and second computers as well as the first and second PCI bus switches. In the event of a malfunction in the first computer, the monitor system decouples the first computer from the primary PCI bus, by opening the first PCI bus switch and coupling the second computer to the primary PCI bus by closing the second PCI bus switch.
    Type: Application
    Filed: September 4, 2002
    Publication date: January 2, 2003
    Applicant: I-Bus/Phoenix, Incorporated
    Inventors: Curtis R. Alexander, Alonso Perez, Thang Doan
  • Method and apparatus for asynchronous time measurement
    Patent number: 4908784
    Abstract: The present invention relates to time measurement apparatus and method for measuring, with picosecond precision, intervals between single edged events, where each measured interval comprises the summation of a rough clock count and fine or calibrated vernier counts of measured fractional clock periods before and after each START and STOP event selected from a calibrated vernier memory. The calibrated vernier memory takes the form of a table of linear voltage versus time developed using pseudo-random generated measurement events of random duration and random separation.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: March 13, 1990
    Assignee: Wave Technologies, Inc.
    Inventors: Gary W. Box, Thomas S. Foote-Lennox, Rodney G. Herreid, James F. Hoff, Dennis J. Leisz, John A. Perlick, Terry T. Steeden, John J. Turner, Curtis R. Alexander