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    Method for managing defects in an information recording medium, and a device and information recording medium using said method
    1.
    发明授权
    Method for managing defects in an information recording medium, and a device and information recording medium using said method 失效
    用于管理信息记录介质中的缺陷的方法，以及使用所述方法的设备和信息记录介质

    公开(公告)号：US5715221A

    公开(公告)日：1998-02-03

    申请号：US630610

    申请日：1996-04-10

    申请人： Motoshi Ito ,  Takahiro Nagai ,  Hiroshi Ueda

    发明人： Motoshi Ito ,  Takahiro Nagai ,  Hiroshi Ueda

    IPC分类号： G11B20/18 ,  G11B7/00

    CPC分类号： G11B20/1883 ,  G11B2220/20

    摘要： A defect list (FIG. 12B) on an information recording medium only includes pairings (A1 and A2, B1 and B3 in FIG. 12B) of addresses of defective sectors belonging to the data sector area and addresses of non-defective sectors which belong to the spare sector area and which are to be used to replace the defective sectors, so that information relating to spare sectors which become defective (B2 in FIG. 12B) is not recorded in the list.

    摘要翻译： 信息记录介质上的缺陷列表（图12B）仅包括属于数据扇区的缺陷扇区的地址和属于非缺陷扇区的地址的配对（图12B中的A1和A2，B1和B3） 备用扇区，并用于替换缺陷扇区，从而与列出有缺陷的备用扇区（图12B中的B2）有关的信息不被记录在列表中。

    Optical disc recording method and optical disc reproducing method
    7.
    发明授权
    Optical disc recording method and optical disc reproducing method 失效
    光盘记录方法和光盘再现方法

    公开(公告)号：US07209422B2

    公开(公告)日：2007-04-24

    申请号：US10493249

    申请日：2002-10-25

    申请人： Takahiro Sato ,  Takashi Yumiba ,  Takahiro Nagai

    发明人： Takahiro Sato ,  Takashi Yumiba ,  Takahiro Nagai

    IPC分类号： G11B20/10

    CPC分类号： G11B7/24085 ,  G11B7/00736 ,  G11B20/00586

    摘要： An optical disc recording method is provided for superimposing sub information by displacing edges of one or more optically-readable recording marks by a minute amount on the basis of a binary sequence code, when recording main information by forming said one or more recording marks, the optical disc recording method including a sequence generation step of generating a first binary sequence code and a second binary sequence code that is different from the first binary sequence code; a first displacement step of displacing one of the edges according to the first binary sequence code; and a second displacement step of displacing another of the edges according to the second binary sequence code.

    摘要翻译： 提供了一种光盘记录方法，用于通过基于二进制序列码将一个或多个光学可读记录标记的边缘移位微小量来叠加子信息，当通过形成所述一个或多个记录标记记录主信息时， 光盘记录方法，包括产生与第一二进制序列码不同的第一二进制序列码和第二二进制序列码的序列生成步骤; 第一位移步骤，根据第一二进制序列码移位边缘之一; 以及根据第二二进制序列码来移位另一个边缘的第二位移步骤。

    Encryption device a decrypting device a secret key generation device a copyright protection system and a cipher communication device
    10.
    发明申请
    Encryption device a decrypting device a secret key generation device a copyright protection system and a cipher communication device 失效
    加密装置，解密装置，密钥生成装置，版权保护系统和密码通信装置

    公开(公告)号：US20050021941A1

    公开(公告)日：2005-01-27

    申请号：US10490346

    申请日：2002-09-11

    申请人： Motoji Ohmori ,  Makoto Tatabayashi ,  Takahiro Nagai ,  Hideshi Ishihara

    发明人： Motoji Ohmori ,  Makoto Tatabayashi ,  Takahiro Nagai ,  Hideshi Ishihara

    IPC分类号： G11B20/00 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32 ,  H04L9/00

    CPC分类号： G11B20/00086 ,  H04L9/0891 ,  H04L9/3268 ,  H04L2209/603

    摘要： An encryption device, a decrypting device, a secret key generation device, a copyright protection system and a cipher communication device comprise: a CRL memory unit 111 that memorizes a CRL, a device key ring memory unit 112 that memorizes a peculiar device key KD A in every IC card 210a used in a decrypting device 200a, a content key memory unit 113 that memorizes a content key Kc which is a secret key for decrypting content, a hashing function processing unit 114 that calculates a hashing value of the CRL memorized in the CRL memory unit 111, an Ex-OR unit 115 that carries out an exclusive OR between the hashing value and the device key KD A memorized in the device key ring memory unit 112, and an Enc unit 116 that encrypts the content key Kc memorized in the content key memory unit 113 with an output value of an Ex-OR unit 115.

    摘要翻译： 加密装置，解密装置，秘密密钥生成装置，版权保护系统和密码通信装置包括：存储CRL的CRL存储单元111，存储特定装置密钥KD A的装置密钥存储单元112 在解密装置200a中使用的每个IC卡210a中，存储作为用于解密内容的秘密密钥的内容密​​钥Kc的内容密钥存储单元113，计算存储在内容中的CRL的散列值的散列函数处理单元114 CRL存储单元111，执行散列值与存储在设备密钥环存储单元112中的设备密钥KD A之间的异或的Ex-OR单元115以及加密存储在设备密钥环存储单元112中的内容密钥Kc的Enc单元116 具有Ex-OR单元115的输出值的内容密钥存储单元113。