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219 条记录 (耗时 0.063 秒)

    Data copying system, data copying method, data reading apparatus, data writing apparatus and data recording medium
    1.
    发明授权
    Data copying system, data copying method, data reading apparatus, data writing apparatus and data recording medium 失效
    数据复制系统，数据复制方法，数据读取装置，数据写入装置和数据记录介质

    公开(公告)号：US06539468B1

    公开(公告)日：2003-03-25

    申请号：US09472479

    申请日：1999-12-27

    申请人： Mitsuhiro Inoue ,  Shunji Harada ,  Masayuki Kozuka ,  Makoto Tatebayashi ,  Yoshihisa Fukushima ,  Mitsuhiko Serikawa

    发明人： Mitsuhiro Inoue ,  Shunji Harada ,  Masayuki Kozuka ,  Makoto Tatebayashi ,  Yoshihisa Fukushima ,  Mitsuhiko Serikawa

    IPC分类号： G06F1214

    CPC分类号： G06T1/0071 ,  G11B20/00086 ,  G11B20/00746 ,  G11B20/00768 ,  G11B20/00884 ,  G11B27/034 ,  G11B2020/10833 ,  G11B2220/2562

    摘要： There is provided a copying system for copying information recorded on a first recording medium onto a second recording medium. The first recording medium is recorded with copying control information for representing conditions for permitting copying of the information recorded on the first recording medium, the copying control information being multiplexed within the information recorded on the first recording medium. The copying system includes: a reading section for reading the information from the first recording medium; a detection section for detecting the copying control information within the information read from the first recording medium; a modification section for, if the copying control information represents a condition that “only copying to a second generation copy is permitted”, modifying the copying control information so as to prohibit any further copying; and a writing section for writing information including the modified copying control information, onto the second recording medium.

    摘要翻译： 提供了一种用于将记录在第一记录介质上的信息复制到第二记录介质上的复印系统。 第一记录介质被记录有用于表示允许复制记录在第一记录介质上的信息的条件的复制控制信息，复制控制信息被复用在记录在第一记录介质上的信息中。 复制系统包括：用于从第一记录介质读取信息的读取部分; 检测部分，用于检测从第一记录介质读取的信息内的复制控制信息; 如果复制控制信息表示“仅允许复制到第二代复制件”的条件，则修改部分，修改复制控制信息以禁止进一步复制; 以及用于将包括修改的复制控制信息的信息写入第二记录介质的写入部分。

    Encrypted communication system that limits the damage caused when a secret key has been leaked
    3.
    发明授权
    Encrypted communication system that limits the damage caused when a secret key has been leaked 失效
    加密通信系统，限制秘密密钥泄露时造成的损坏

    公开(公告)号：US6151394A

    公开(公告)日：2000-11-21

    申请号：US940052

    申请日：1997-09-30

    申请人： Makoto Tatebayashi ,  Yoshihisa Fukushima ,  Takehisa Kato ,  Naoki Endoh ,  Koichi Hirayama

    发明人： Makoto Tatebayashi ,  Yoshihisa Fukushima ,  Takehisa Kato ,  Naoki Endoh ,  Koichi Hirayama

    IPC分类号： H04L9/08 ,  H04L9/00

    CPC分类号： H04L9/0833 ,  H04L9/0822

    摘要： In an encrypted transmission system composed of one transmission apparatus 10 and twenty-eight reception apparatuses A1-G4 that are classified into seven groups A-G, two secret key exclusively selected out of a total of fourteen secret keys are distributed beforehand to each group. The transmission apparatus 10 encrypts the same message M using one of the two secret keys distributed to each group and sends each group a message M encrypted with one of the group's secret keys. The reception apparatuses each decrypt the received cryptogram separately using each of the secret keys assigned to the of group to which each reception apparatus belongs, judge whether either of the two decryption results conforms to a predetermined rule, and specify the correct decryption result.

    摘要翻译： 在由分组为七组A-G的一个发送装置10和二十八个接收装置A1-G4组成的加密传输系统中，预先向每个组分发从总共14个秘密密钥中唯一选择的两个秘密密钥。 发送装置10使用分配给每个组的两个秘密密钥中的一个对相同的消息M进行加密，并且向每个组发送用该组的秘密密钥之一加密的消息M. 接收装置分别使用分配给每个接收装置所属的组的每个秘密密钥来分别接收密码，判断两个解密结果是否符合预定规则，并指定正确的解密结果。

    Device authentication system which allows the authentication function to be changed
    5.
    发明授权
    Device authentication system which allows the authentication function to be changed 失效
    允许更改认证功能的设备认证系统

    公开(公告)号：US6034618A

    公开(公告)日：2000-03-07

    申请号：US940076

    申请日：1997-09-29

    申请人： Makoto Tatebayashi ,  Natsume Matsuzaki ,  Yoshihisa Fukushima ,  Koichi Hirayama ,  Atsushi Ishihara

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

    IPC分类号： H04L9/32 ,  G06F11/00

    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，并将作为响应数据RES1发送给解码装置90的函数值fi（CHA1）进行计算。 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。