Patents by Inventor Eduardo Akira Misawa

Eduardo Akira Misawa 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).

  • Patent number: 7208898
    Abstract: Method and apparatus for control object manipulation from an initial position to a final position. A jerk control profile describes a near time-optimal jerk trajectory for the control object and includes a sequence of first, second and third sinusoidal pulses of respectively alternating polarity and common absolute magnitude. The area of the second pulse is nominally equal to the combined area of the first and third pulses, and the pulses are preferably symmetric about the respective maximum pulse values. Associated control profiles (control voltage, current, velocity, displacement, etc.) are derived from the jerk control profile. For longer seeks, constant, non-zero jerk segments are inserted into the profile between the pulses, during which control voltage is maintained near saturation. The control object preferably comprises a transducer in a data storage device and the jerk control profile is stored in a memory location of the device.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: April 24, 2007
    Assignee: The Board of Regents for Oklahoma State University
    Inventors: Chad Andrew Stoecker, Eduardo Akira Misawa, Clyde Everett Goodner, III