中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.074 seconds)

    OPTICAL DISK PLAYER
    1.
    发明专利
    OPTICAL DISK PLAYER 未知

    公开(公告)号：CA1244941A

    公开(公告)日：1988-11-15

    申请号：CA477207

    申请日：1985-03-22

    Applicant: SONY CORP

    Inventor： TSUKAMURA YOSHIHIRO ,  MORIMOTO TOSHIRO ,  KUBO MATAYASU ,  MUKAI MASATAKA

    IPC: G11B7/004 ,  G11B7/005 ,  G11B7/125 ,  G11B27/36 ,  G11B7/00

    Abstract: This invention relates to an optical disk recording and reproducing apparatus for recording a predetermined signal on and/or reproducing the same from a writable disk which is rotated at the constant linear velocity by using the laser from a laser source. In this case, upon reproducing the above-described signal, if a signal recorded on the inner periphery of the disk is accessed, during the period from this addressing up to the time when the linear velocity at the inner periphery of the disk becomes constant, on the basis of a spindle lock signal, the beam amount of the laser from the laser source and irradiating the disk is decreased to thereby prevent useless data from being rewritten in the disk.

    OPTICAL DISK PLAYER
    2.
    发明专利
    OPTICAL DISK PLAYER 未知

    公开(公告)号：DE3571356D1

    公开(公告)日：1989-08-10

    申请号：DE3571356

    申请日：1985-03-22

    Applicant: SONY CORP

    Inventor： TSUKAMURA YOSHIHIRO ,  MORIMOTO TOSHIRO ,  KUBO MATAYASU ,  MUKAI MASATAKA

    IPC: G11B7/004 ,  G11B7/005 ,  G11B7/125 ,  G11B7/00

    Abstract: This invention relates to an optical disk recording and reproducing apparatus for recording a predetermined signal on and/or reproducing the same from a writable disk which is rotated at a constant linear velocity by using a laser from a laser source. In this case, upon reproducing the above-described signal, if a signal recorded on the inner periphery of the disk is accessed, during the period from this addressing up to the time when the linear velocity at the inner periphery of the disk becomes constant, on the basis of a spindle lock signal, the beam power of the laser from the laser source and irradiating the disk is decreased to thereby prevent useless data from being rewritten on the disk.

    OPTICAL DISC PLAYER
    3.
    发明专利
    OPTICAL DISC PLAYER 未知

    公开(公告)号：AU567800B2

    公开(公告)日：1987-12-03

    申请号：AU4024685

    申请日：1985-03-22

    Applicant: SONY CORP

    Inventor： TSUKAMURA YOSHIHIRO ,  MORIMOTO TOSHIRO ,  KUBO MATAYASU ,  MUKAI MASATAKA

    IPC: G11B7/004 ,  G11B7/005 ,  G11B7/125 ,  G11B7/085 ,  G11B7/00

    Abstract: This invention relates to an optical disk recording and reproducing apparatus for recording a predetermined signal on and/or reproducing the same from a writable disk which is rotated at a constant linear velocity by using a laser from a laser source. In this case, upon reproducing the above-described signal, if a signal recorded on the inner periphery of the disk is accessed, during the period from this addressing up to the time when the linear velocity at the inner periphery of the disk becomes constant, on the basis of a spindle lock signal, the beam power of the laser from the laser source and irradiating the disk is decreased to thereby prevent useless data from being rewritten on the disk.

    OPTICAL DISC PLAYER
    5.
    发明专利
    OPTICAL DISC PLAYER 未知

    公开(公告)号：AU4024685A

    公开(公告)日：1985-09-26

    申请号：AU4024685

    申请日：1985-03-22

    Applicant: SONY CORP

    Inventor： TSUKAMURA YOSHIHIRO ,  MORIMOTO TOSHIRO ,  KUBO MATAYASU ,  MUKAI MASATAKA

    IPC: G11B7/004 ,  G11B7/005 ,  G11B7/125 ,  G11B7/085

    Abstract: This invention relates to an optical disk recording and reproducing apparatus for recording a predetermined signal on and/or reproducing the same from a writable disk which is rotated at a constant linear velocity by using a laser from a laser source. In this case, upon reproducing the above-described signal, if a signal recorded on the inner periphery of the disk is accessed, during the period from this addressing up to the time when the linear velocity at the inner periphery of the disk becomes constant, on the basis of a spindle lock signal, the beam power of the laser from the laser source and irradiating the disk is decreased to thereby prevent useless data from being rewritten on the disk.

Patent Agency Ranking