Patents Assigned to Poineer Video Corporation
  • Patent number: 6469961
    Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: October 22, 2002
    Assignees: Sony Corporation, Pioneer Electronic Corporation, Poineer Video Corporation
    Inventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota