Patents by Inventor Shoji Asakawa

Shoji Asakawa 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 disk driving apparatus capable of detecting overlapped disc insertion
    Patent number: 7210150
    Abstract: Herein disclosed is an optical disc driving apparatus 100, 200 for driving an optical disc while reading out information contained in the optical disc, the optical disc having an outer peripheral surface, comprising: a housing 101 formed with an loading slot having the optical disc passed therethrough; first detecting means 102 for performing a detection of the outer peripheral surface of the optical disc to be moved into the housing 101; and second detecting means 103 for performing a detection of the outer peripheral surface of the optical disc to be moved into the housing 101 after the detection of the outer peripheral surface of the optical disc is performed by the first detecting means 102; and judging means 104 for judging whether one optical disc or partially overlapped optical discs are passed through the loading slot 101a of the housing 101 based on results detected by the first and second detecting means 102 and 103.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: April 24, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji Urushihara, Takanori Hayashi, Masakazu Kashikawa, Shoji Asakawa
  • Optical disc driving apparatus
    Publication number: 20040062155
    Abstract: Herein disclosed is an optical disc driving apparatus 100, 200 for driving an optical disc while reading out information contained in the optical disc, the optical disc having an outer peripheral surface, comprising: a housing 101 formed with an loading slot having the optical disc passed therethrough; first detecting means 102 for performing a detection of the outer peripheral surface of the optical disc to be moved into the housing 101; and second detecting means 103 for performing a detection of the outer peripheral surface of the optical disc to be moved into the housing 101 after the detection of the outer peripheral surface of the optical disc is performed by the first detecting means 102; and judging means 104 for judging whether one optical disc or partially overlapped optical discs are passed through the loading slot 101a of the housing 101 based on results detected by the first and second detecting means 102 and 103.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 1, 2004
    Inventors: Kenji Urushihara, Takanori Hayashi, Masakazu Kashikawa, Shoji Asakawa