Patents by Inventor Masanao Wakikawa

Masanao Wakikawa 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: 6335914
    Abstract: An optical disc device, having a traverse base includes an optical pickup and a feed motor that drives the optical pickup forward and backward from an inner circumferential position of an optical disc to an outer circumferential position thereof. This device comprises a loading device for transferring an optical disc from the exterior of the device body onto the traverse base, and a loading driving device for driving the loading device by using the driving of the feed motor. The feed motor can move the optical pickup for signal reproduction and eject the optical disc to the exterior of the device, thereby reducing the number of motors used in the device to provide a more inexpensive optical disc device.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: January 1, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toru Tanaka, Yuji Ariyoshi, Masanao Wakikawa, Kiyoshi Ishioka, Masanori Onishi
  • Publication number: 20010030926
    Abstract: An object of this invention is to reduce the number of motors used in a device to provide a more inexpensive optical disc device. A traverse base (3) includes an optical pickup (7) and a feed motor (11) that drives the optical pickup (7) forward and backward from the inner circumferential position of the optical disc (70) to the outer circumferential position thereof, and this device comprises a loading means for transferring the optical disc (70) from the exterior of the device body (1) onto the traverse base (3) and a loading driving means (30) for driving the loading means by using the driving of the feed motor (11). The feed motor (11) can move the optical pickup (7) for signal reproduction and eject the optical disc (70) to the exterior of the device, thereby reducing the number of motors used in the device to provide a more inexpensive optical disc device.
    Type: Application
    Filed: June 16, 1999
    Publication date: October 18, 2001
    Inventors: TORU TANAKA, YUJI ARIYOSHI, MASANAO WAKIKAWA, KIYOSHI ISHIOKA, MASANORI ONISHI