Patents by Inventor Masako Onodera

Masako Onodera 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: 4807062
    Abstract: A magnetic disk drive in which a magnetic head contacts to a landing zone on a magnetic disk when the rotation of the magnetic disk is stopped. The magnetic disk drive is characterized by the provision of abnormality detection means for detecting that the drive is in abnormal condition, position detection means for detecting whether or not the magnetic head has moved to the landing zone or not, control means for outputting a first instruction signal when the abnormal condition is detected by the abnormality detection means and for outputting a second instruction signal when it is detected by the position detection means that the magnetic head has not yet moved to the landing zone, and drive means for driving the magnetic head by a first drive force when said first instruction signal is inputted and for driving the magnetic head by a second drive force greater than the first drive force when said second instruction signal is inputted, whereby the magnetic head is moved to the landing zone.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: February 21, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Masako Onodera