Patents by Inventor Edward Kevin Dahill

Edward Kevin Dahill 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).

  • Servo positioning error control for magnetic disk file
    Patent number: 3947881
    Abstract: In a magnetic disk file head positioning control system, the servo loop controlling the fine positioning of magnetic heads for a particular head track is responsive to a servo error signal. The servo error signal consists of a low pass filtered head position error signal summed with a pseudo velocity signal derived from the same head position error signal.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: March 30, 1976
    Assignee: Control Data Corporation
    Inventors: Edward Kevin Dahill, Ronald Bruce Howes, Jr.