Patents by Inventor Goru Fujita

Goru Fujita 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 and optical disc driving device
    Patent number: 6292451
    Abstract: An optical disk having a plurality of substantially concentric tracks, each of which includes a plurality of segments each comprising a servo area ARs provided with servo pits for giving servo information to a disk drive and a data area ARd. Identification marks SGM, ADM, STM1, STM2 are recorded in the servo area ARs. The identification marks SGM, ADM, STM1, STM2 provide information for identifying the respective segments depending on the recording position in the servo area ARs.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: September 18, 2001
    Assignee: Sony Corporation
    Inventors: Tobita Minoru, Goru Fujita, Satoshi Otsuka, Tamotsu Yamagami