Patents by Inventor Kazuhiro Oyamada

Kazuhiro Oyamada 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).

  • Magnetic disk apparatus and magnetic disk apparatus control method
    Patent number: 7738211
    Abstract: A magnetic disk apparatus has a heater for heating a head incorporated in the magnetic disk apparatus, an atmospheric pressure detector for detecting a change in atmospheric pressure in the magnetic disk apparatus, and an adjuster for adjusting a thermal dose supplied to the head by the heater according to the change in atmospheric pressure detected by the atmospheric pressure detector.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: June 15, 2010
    Assignee: Toshiba Storage Device Corporation
    Inventors: Kazuhiro Oyamada, Koji Ishii
  • MAGNETIC DISK APPARATUS AND MAGNETIC DISK APPARATUS CONTROL METHOD
    Publication number: 20090141390
    Abstract: A magnetic disk apparatus has a heater for heating a head incorporated in the magnetic disk apparatus, an atmospheric pressure detector for detecting a change in atmospheric pressure in the magnetic disk apparatus, and an adjuster for adjusting a thermal dose supplied to the head by the heater according to the change in atmospheric pressure detected by the atmospheric pressure detector.
    Type: Application
    Filed: October 30, 2008
    Publication date: June 4, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Kazuhiro OYAMADA, Koji Ishii
  • Storage apparatus, control method, control device, and program which preheats head
    Patent number: 7430090
    Abstract: Upon correction, a preheat sector number measurement unit measures a preheat sector number which corresponds to transition time from when electric power distribution to and heating of the heater by preheat electric power is started until when it is stabilized to a predetermined target flying height. Upon reproduction or recording, a flying height control unit distributes electric power to the heater from a sector position which is before a target sector by the preheat sector number so as to perform preliminary heating, and then controls the flying height of the head to a predetermined target flying height from a target sector position.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: September 30, 2008
    Assignee: Fujitsu Limited
    Inventors: Kazuhiro Oyamada, Koji Ishii
  • Storage apparatus, control method, and control circuit
    Publication number: 20080068739
    Abstract: Upon correction, a preheat sector number measurement unit measures a preheat sector number which corresponds to transition time from when electric power distribution to and heating of the heater by preheat electric power is started until when it is stabilized to a predetermined target flying height. Upon reproduction or recording, a flying height control unit distributes electric power to the heater from a sector position which is before a target sector by the preheat sector number so as to perform preliminary heating, and then controls the flying height of the head to a predetermined target flying height from a target sector position.
    Type: Application
    Filed: December 22, 2006
    Publication date: March 20, 2008
    Inventors: Kazuhiro Oyamada, Koji Ishii