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    Device authentication system which allows the authentication function to be changed
    2.
    发明公开
    Device authentication system which allows the authentication function to be changed 失效
    Vorrichtung zur Authentifizierung einesGerätsmitveränderbarerAuthentifizierungsfunktion

    公开(公告)号：EP0840479A2

    公开(公告)日：1998-05-06

    申请号：EP97307675.5

    申请日：1997-09-30

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  KABUSHIKI KAISHA TOSHIBA

    发明人： Tatebayashi, Makoto ,  Matsuzaki, Natsume ,  Fukushima, Yoshihisa ,  Hirayama, Koichi ,  Ishihara, Atsushi

    IPC分类号： H04L9/32

    CPC分类号： H04L9/3271

    摘要： The decoder apparatus 90 generates a random number R1 for authenticating the optical disc drive apparatus 70 and sends it to the optical disc drive apparatus 70 as the challenge data CHA1. The optical disc drive apparatus 70 selects one out of the sixteen claimant functions stored in the claimant function unit 722 and calculates the function value fi(CHA1) which it sends to the decoder apparatus 90 as the response data RES1. The decoder apparatus 90 compares the response data RES1 with sixteen function values f1(R1) to f16(R1) that are obtained using the sixteen verification functions stored in the verification function unit 922, and authenticates the optical disc drive apparatus 70 when at least one of the function values matches the response data RES1.

    摘要翻译： 解码器装置90生成用于认证光盘驱动装置70的随机数R1，并将其发送到作为挑战数据CHA1的光盘驱动装置70。 光盘驱动装置70选择存储在权利要求函数单元722中的十六个要求函数中的一个，并计算作为响应数据RES1发送给解码装置90的函数值fi（CHA1）。 解码器装置90将响应数据RES1与使用存储在验证功能单元922中的十六个验证功能获得的十六个功能值f1（R1）至f16（R1）进行比较，并且当至少一个 的功能值与响应数据RES1匹配。

    Data processing apparatus with means for recording data by moving a head to a plurality of tracks
    4.
    发明公开
    Data processing apparatus with means for recording data by moving a head to a plurality of tracks 失效
    数据处理装置，用于通过将头移动到多个轨迹来记录数据

    公开(公告)号：EP0089020A3

    公开(公告)日：1983-10-19

    申请号：EP83102372

    申请日：1983-03-10

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Kimoto, Katsumi ,  Ishihara, Atsushi

    IPC分类号： G11B19/02 ,  G11B21/02 ,  G11B21/08 ,  G11B19/04 ,  G11B27/36 ,  G11B07/00

    CPC分类号： G11B19/04 ,  G11B7/0045 ,  G11B19/02 ,  G11B21/081 ,  G11B27/36

    摘要： A data recording apparatus is provided which has a recording/reproduction head (3) for recording data on or reproducing the data from a recording medium, a moving mechanism (92, 93) for moving the recording/reproducing head (3) on the recording medium, an error detectors (78,85) for detecting an error in accordance with a signal from the recording/reproduction head (3) in the recording mode, and a control section (21) for detecting that an access to a recording start track cannot be made by the recordingl reproduction head (3) for recording data, for determining a track number in the vicinity of the recording start track by the recording/reproduction head (3) in accordance with a detection result, and for controlling a moving mechanism (92, 93) to move the recording/reproduction head (3) to a target track ahead of a predetermined number of tracks which correspond to a distance between the target track and the recording start track without performing recording of data on the predetermined number of tracks in accordance with a detection result from a tracking error detector (78, 85).

    Data processing apparatus with means for recording data by moving a head to a plurality of tracks
    6.
    发明公开
    Data processing apparatus with means for recording data by moving a head to a plurality of tracks 失效
    一种数据处理设备，包括用于通过头移动到多数磁道记录数据的装置。

    公开(公告)号：EP0089020A2

    公开(公告)日：1983-09-21

    申请号：EP83102372.6

    申请日：1983-03-10

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Kimoto, Katsumi ,  Ishihara, Atsushi

    IPC分类号： G11B19/02 ,  G11B21/02 ,  G11B21/08 ,  G11B19/04 ,  G11B27/36

    CPC分类号： G11B19/04 ,  G11B7/0045 ,  G11B19/02 ,  G11B21/081 ,  G11B27/36

    摘要： A data recording apparatus is provided which has a recording/reproduction head (3) for recording data on or reproducing the data from a recording medium, a moving mechanism (92, 93) for moving the recording/reproducing head (3) on the recording medium, an error detectors (78,85) for detecting an error in accordance with a signal from the recording/reproduction head (3) in the recording mode, and a control section (21) for detecting that an access to a recording start track cannot be made by the recordingl reproduction head (3) for recording data, for determining a track number in the vicinity of the recording start track by the recording/reproduction head (3) in accordance with a detection result, and for controlling a moving mechanism (92, 93) to move the recording/reproduction head (3) to a target track ahead of a predetermined number of tracks which correspond to a distance between the target track and the recording start track without performing recording of data on the predetermined number of tracks in accordance with a detection result from a tracking error detector (78, 85).