Patents by Inventor Iwao Ohyama

Iwao Ohyama 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: 6873481
    Abstract: A disk apparatus includes a disk guide member, a disk transfer mechanism, a disk rotating section, a disk clamp mechanism, and a control section. The guide member has a pair of detectors arranged in the disk transfer direction with a predetermined distance therebetween so as to be brought into a detection state by a peripheral edge of a disk when the disk reaches such a position as to be clamped by the disk rotating section. The control section operates the disk clamp mechanism so that the disk rotating section is urged toward the disk when one of the detectors is brought into a detection state during the transfer of the disk, determines that a clamping operation of the disk is completed when both of the detectors are in a detection state and the detection state continues for a predetermined time, and then stops the disk transfer mechanism.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: March 29, 2005
    Assignee: Alpine Electronics, Inc.
    Inventors: Iwao Ohyama, Masatoshi Ito
  • Publication number: 20030156508
    Abstract: A disk apparatus includes a disk guide member, a disk transfer mechanism, a disk rotating section, a disk clamp mechanism, and a control section. The guide member has a pair of detectors arranged in the disk transfer direction with a predetermined distance therebetween so as to be brought into a detection state by a peripheral edge of a disk when the disk reaches such a position as to be clamped by the disk rotating section. The control section operates the disk clamp mechanism so that the disk rotating section is urged toward the disk when one of the detectors is brought into a detection state during the transfer of the disk, determines that a clamping operation of the disk is completed when both of the detectors are in a detection state and the detection state continues for a predetermined time, and then stops the disk transfer mechanism.
    Type: Application
    Filed: January 13, 2003
    Publication date: August 21, 2003
    Inventors: Iwao Ohyama, Masatoshi Ito
  • Patent number: D324040
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: February 18, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinji Saito, Kazuharu Yamamoto, Masahiko Kashiwabara, Kazuya Fujita, Iwao Ohyama