Patents by Inventor Jin Gohshi

Jin Gohshi 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).

  • Optical disc device for recording different types of optical discs and data recording method for optical disc device
    Patent number: 7423942
    Abstract: In an optical disc device comprising: a pickup 3 having a laser diode and generating a laser beam for recording onto an optical disc 1; a disc motor 2 that drives the rotation of an optical disc mounted thereon; a stepping motor that moves the pickup in the radial direction of the disc; and a system controller 6 that supplies drive current to the laser diode, and that controls the rotational speed of the disc motor and the position of the pickup by means of the stepping motor; the pickup has a temperature sensor 31 in its interior and system controller 6 restricts the drive current supplied to the laser diode in accordance with a detected temperature during data recording and controls the rotational speed of the disc motor, based on the detected temperature and the data recording properties of the optical disc which have been determined.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: September 9, 2008
    Assignee: Hitachi-LG Data Storage, Inc.
    Inventors: Hajime Nishimura, Jin Gohshi
  • Optical disc device and data recording method for optical disc device
    Publication number: 20050030859
    Abstract: In an optical disc device comprising: a pickup 3 having a laser diode and generating a laser beam for recording onto an optical disc 1; a disc motor 2 that drives the rotation of an optical disc mounted thereon; a stepping motor that moves the pickup in the radial direction of the disc; and a system controller 6 that supplies drive current to the laser diode, and that controls the rotational speed of the disc motor and the position of the pickup by means of the stepping motor; the pickup has a temperature sensor 31 in its interior and system controller 6 restricts the drive current supplied to the laser diode in accordance with a detected temperature during data recording and controls the rotational speed of the disc motor, based on the detected temperature and the data recording properties of the optical disc which have been determined.
    Type: Application
    Filed: March 17, 2004
    Publication date: February 10, 2005
    Applicant: Hitachi-LG Data Storage, Inc.
    Inventors: Hajime Nishimura, Jin Gohshi