Patents by Inventor Kouhei Takamatsu

Kouhei Takamatsu 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).

  • Apparatus for recording or/and reproducing information and method for reducing power consumption thereof
    Patent number: 7289287
    Abstract: In an apparatus for recording and/or reproducing information, which reproduces servo information being recorded on a medium and conducts a tracking operation based on the servo information, a power save part conducts a power save operation by reducing an operation clock frequency in accordance with a predetermined process during a tracking operation, during a seek operation, and/or during spindle motor startup.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: October 30, 2007
    Assignee: Fujitsu Limited
    Inventors: Kouhei Takamatsu, Tomoaki Saito, Kenji Itou, Isamu Tomita, Hiroshi Tsurumi
  • Disk device
    Patent number: 7136245
    Abstract: A disk device performs position control of a head. An acquiring unit acquires correction information and check information from a disk for checking the correction information. A judging unit judges whether the correction information acquired should be used for correcting position information recorded in the disk, based on the correction information acquired and the check information acquired.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: November 14, 2006
    Assignee: Fujitsu Limited
    Inventors: Kazunori Mori, Isamu Tomita, Takeyori Hara, Yoshiyuki Kagami, Kouhei Takamatsu
  • Disk device
    Publication number: 20050190480
    Abstract: A disk device performs position control of a head. An acquiring unit acquires correction information and check information from a disk for checking the correction information. A judging unit judges whether the correction information acquired should be used for correcting position information recorded in the disk, based on the correction information acquired and the check information acquired.
    Type: Application
    Filed: July 23, 2004
    Publication date: September 1, 2005
    Inventors: Kazunori Mori, Isamu Tomita, Takeyori Hara, Yoshiyuki Kagami, Kouhei Takamatsu
  • Apparatus for recording or/and reproducing information and method for reducing power consumption thereof
    Publication number: 20030133216
    Abstract: In an apparatus for recording and/or reproducing information, which reproduces servo information being recorded on a medium and conducts a tracking operation based on the servo information, a power save part conducts a power save operation by reducing an operation clock frequency in accordance with a predetermined process during a tracking operation, during a seek operation, and/or during spindle motor startup.
    Type: Application
    Filed: October 22, 2002
    Publication date: July 17, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Kouhei Takamatsu, Tomoaki Saito, Kenji Itou, Isamu Tomita, Hiroshi Tsurumi