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25 条记录 (耗时 0.024 秒)

    CONTENT PROTECTION SYSTEM
    7.
    发明公开
    CONTENT PROTECTION SYSTEM 审中-公开
    INHALTSSCHUTZSYSTEM

    公开(公告)号：EP1624608A1

    公开(公告)日：2006-02-08

    申请号：EP04719578.9

    申请日：2004-03-11

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： NAKANO, Toshihisa ,  FUTA, Yuichi ,  OHMORI, Motoji ,  TATEBAYASHI, Makoto ,  HARADA, Shunji ,  MURASE, Kaoru ,  YAMAMICHI, Masato

    IPC分类号： H04L9/08

    CPC分类号： H04L9/0822 ,  G11B20/00086 ,  G11B20/00253 ,  H04L9/3268 ,  H04L2209/60

    摘要： The invention provides a recording apparatus and a reproduction apparatus that are able to prevent illegitimate use of contents. A recording medium stores therein a medium inherent number in the unrewritable area. The recording apparatus writes media key data and an encrypted content onto the recording medium. The media key data includes encrypted media keys generated by (i) for each of unrevoked reproduction apparatuses, encrypting a media key using a device key of the unrevoked reproduction apparatus respectively, and (ii) for each of revoked reproduction apparatuses, encrypting detection information using a device key of the revoked reproduction apparatus respectively. The reproduction apparatus decrypts the encrypted media key using a device key to generate a decryption media key, judges whether the decryption media key is the detection information or not, and prohibits the encrypted content recorded on the recording medium from being decrypted when having judged in the affirmative.

    摘要翻译： 本发明提供能够防止非法使用内容的记录装置和再现装置。 记录介质在其中存储不可重写区域中的媒体固有数字。 记录装置将媒体密钥数据和加密内容写入到记录介质上。 媒体密钥数据包括通过（i）针对每个未被复制的再现设备生成的加密的媒体密钥，分别使用未被复制的设备的设备密钥加密媒体密钥，以及（ii）对于每个撤销的再现设备，使用 解除再现设备的设备密钥。 再现装置使用设备密钥解密加密的媒体密钥以生成解密媒体密钥，判断解密媒体密钥是否为检测信息，并且当在 肯定。

    CONTENT MANAGEMENT METHOD AND CONTENT MANAGEMENT APPARATUS
    8.
    发明公开
    CONTENT MANAGEMENT METHOD AND CONTENT MANAGEMENT APPARATUS 审中-公开
    INHALTSVERWALTUNGSVERFAHREN UND INHALTSVERWALTUNGSVORRICHTUNG

    公开(公告)号：EP1406175A1

    公开(公告)日：2004-04-07

    申请号：EP02736211.0

    申请日：2002-07-02

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： SHIMOJIMA, Takashi ,  SATO, Mitsuhiro ,  NOGUCHI, Naohiko ,  MATSUI, Shinichi ,  INOUE, Ryuji ,  MURASE, Kaoru ,  HARADA, Shunji

    IPC分类号： G06F12/14 ,  G06F17/60 ,  G11B20/10

    CPC分类号： G06Q30/02 ,  G06F21/10 ,  G06F2221/2135 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00557 ,  G11B20/00746 ,  G11B20/00768

    摘要： With content management apparatus 110 serving as a copy origin and storage medium 120 as a copy target, the copy origin retains allowed copy count control information on content, and when the content is copied from the copy origin to the copy target, the allowed copy count control information retained at the copy origin before copy processing is updated in accordance with a predetermined rule to generate allowed copy count control information to be retained at the copy origin and allowed copy count control information to be retained at the copy target, and subsequent copy processing at the copy origin is done based on the allowed copy count control information retained at the copy origin, whereas subsequent copy processing on the content stored in storage medium 120 is done based on the allowed copy count control information stored in storage medium 120. In this way, it is possible to achieve content management which is easily understandable for users.

    摘要翻译： 当内容管理装置（110）是复制原件并且记录介质（120）是复制目的地时，并且当复制原稿保持内容复制使能计数控制信息并且内容从复制原件复制到复制目的地时。 根据预定规则更新由复制处理之前的复制原点保持的复制使能计数控制信息。 根据记录在记录介质上的复制使能计数控制信息，根据由复制原稿保存的复制使能计数控制信息和记录在记录介质中的内容的复制处理执行复制原始处理。 因此，可以实现用户容易理解的内容管理。