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    Content recording/reproducing system, distribution device, reproducing device, and recording device
    1.
    发明授权
    Content recording/reproducing system, distribution device, reproducing device, and recording device 有权
    内容记录/再现系统，分发设备，再现设备和记录设备

    公开(公告)号：US07702109B2

    公开(公告)日：2010-04-20

    申请号：US10548265

    申请日：2004-03-11

    申请人： Yuichi Futa ,  Masato Yamamichi ,  Masami Yamamichi, legal representative ,  Satomi Yamamichi, legal representative ,  Keiko Yamamichi, legal representative ,  Motoji Ohmori ,  Masaya Yamamoto ,  Makoto Tatebayashi

    发明人： Yuichi Futa ,  Masato Yamamichi ,  Motoji Ohmori ,  Masaya Yamamoto ,  Makoto Tatebayashi

    IPC分类号： H04L9/00

    CPC分类号： H04N21/4325 ,  G11B20/00086 ,  G11B20/00173 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00362 ,  G11B20/00492 ,  H04N21/26613 ,  H04N21/835

    摘要： A content recording/reproducing system, which records and reproduces a sub-content relating to a main content, includes a distribution device, first and second recording media, a recording device and a reproducing device. The first recording medium that is non-rewritable prestores key data based on which a public key is derivable, and the main content. The distribution device outputs verification information that includes the sub-content and is generated by applying a digital signature to relative information relating to the sub-content based on a secret key corresponding to the public key. The recording device acquires and records the verification information on the second recording medium that is rewritable. The reproducing device acquires the key data from the first recording medium and the verification information from the second recording medium, derives the public key from the key data, verifies the verification information using the public key, and reproduces the sub-content if the verification succeeds.

    摘要翻译： 记录和再现与主要内容相关的子内容的内容记录/再现系统包括分发装置，第一和第二记录介质，记录装置和再现装置。 不可重写的第一种记录介质预先存储基于该公钥的可导出的密钥数据，以及主要内容。 分发装置输出包含子内容的验证信息，并且通过基于与公开密钥相对应的秘密密钥将数字签名应用于与子内容相关的相关信息来生成。 记录装置在可重写的第二记录介质上获取并记录验证信息。 再现装置从第一记录介质获取密钥数据和来自第二记录介质的验证信息，从密钥数据中导出公共密钥，使用公钥验证验证信息，并且如果验证成功则再现子内容 。

    Securely aggregating content on a storage device
    3.
    发明授权
    Securely aggregating content on a storage device 有权
    在存储设备上安全地聚合内容

    公开(公告)号：US07823212B2

    公开(公告)日：2010-10-26

    申请号：US10553412

    申请日：2004-04-21

    申请人： Masato Yamamichi ,  Satomi Yamamichi, legal representative ,  Keiko Yamamichi, legal representative ,  Motoji Ohmori ,  Masaya Yamamoto ,  Yasushi Uesaka ,  Hiroshi Hamasaka

    发明人： Masato Yamamichi ,  Motoji Ohmori ,  Masaya Yamamoto ,  Yasushi Uesaka ,  Hiroshi Hamasaka

    IPC分类号： G06F21/00

    CPC分类号： G11B20/00086 ,  G11B20/10

    摘要： An aggregation system aggregates contents recorded on a plurality of recording mediums and recording them onto another recording medium while protecting the copyrights of the contents is provided. The aggregation system includes an aggregation apparatus and a reproduction apparatus. The aggregation apparatus obtains a main content from an optical disc, obtains a sub content from a memory card, and aggregates the obtained main content and sub content and records them onto a portable medium. The reproduction apparatus obtains the main content from the optical disc, obtains reproduction control information for controlling reproduction of the main content, and reproduces the main content recorded on the optical disc based on the reproduction control information.

    摘要翻译： 聚合系统聚合记录在多个记录介质上的内容并将其记录在另一记录介质上，同时保护内容的版权。 聚合系统包括聚合装置和再现装置。 聚合装置从光盘获得主要内容，从存储卡获取子内容，并且将获得的主要内容和子内容聚合并将其记录在便携式介质上。 再现装置从光盘获得主要内容，获得用于控制主要内容的再现的再现控制信息，并且基于再现控制信息再现记录在光盘上的主要内容。

    Content recording/reproducing system, distribution device, reproducing device, and recording device
    5.
    发明申请
    Content recording/reproducing system, distribution device, reproducing device, and recording device 有权
    内容记录/再现系统，分发设备，再现设备和记录设备

    公开(公告)号：US20070094505A1

    公开(公告)日：2007-04-26

    申请号：US10548265

    申请日：2004-03-11

    申请人： Yuichi Futa ,  Masato Yamamichi ,  Masami Yamamichi ,  Satomi Yamamichi ,  Keiko Yamamichi ,  Motoji Ohmori ,  Masaya Yamamoto ,  Makoto Tatabayashi

    发明人： Yuichi Futa ,  Masato Yamamichi ,  Masami Yamamichi ,  Satomi Yamamichi ,  Keiko Yamamichi ,  Motoji Ohmori ,  Masaya Yamamoto ,  Makoto Tatabayashi

    IPC分类号： H04L9/00

    CPC分类号： H04N21/4325 ,  G11B20/00086 ,  G11B20/00173 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00362 ,  G11B20/00492 ,  H04N21/26613 ,  H04N21/835

    摘要： A content recording/reproducing system, which records and reproduces a sub-content relating to a main content, includes a distribution device, first and second recording media, a recording device and a reproducing device. The first recording medium that is non-rewritable prestores key data based on which a public key is derivable, and the main content. The distribution device outputs verification information that includes the sub-content and is generated by applying a digital signature to relative information relating to the sub-content based on a secret key corresponding to the public key. The recording device acquires and records the verification information on the second recording medium that is rewritable. The reproducing device acquires the key data from the first recording medium and the verification information from the second recording medium, derives the public key from the key data, verifies the verification information using the public key, and reproduces the sub-content if the verification succeeds.

    摘要翻译： 记录和再现与主要内容相关的子内容的内容记录/再现系统包括分发装置，第一和第二记录介质，记录装置和再现装置。 不可重写的第一种记录介质预先存储基于该公钥的可导出的密钥数据，以及主要内容。 分发装置输出包含子内容的验证信息，并且通过基于与公开密钥相对应的秘密密钥将数字签名应用于与子内容相关的相关信息来生成。 记录装置在可重写的第二记录介质上获取并记录验证信息。 再现装置从第一记录介质获取密钥数据和来自第二记录介质的验证信息，从密钥数据中导出公共密钥，使用公钥验证验证信息，并且如果验证成功则再现子内容 。

    Distribution system, distribution apparatus, and reception apparatus for distributing contents having usage expiry
    6.
    发明授权
    Distribution system, distribution apparatus, and reception apparatus for distributing contents having usage expiry 有权
    用于分发具有使用期满的内容的分发系统，配送装置和接收装置

    公开(公告)号：US07386618B2

    公开(公告)日：2008-06-10

    申请号：US10431500

    申请日：2003-05-08

    申请人： Yuichi Futa ,  Motoji Ohmori ,  Makoto Tatebayashi ,  Masaya Yamamoto

    发明人： Yuichi Futa ,  Motoji Ohmori ,  Makoto Tatebayashi ,  Masaya Yamamoto

    IPC分类号： G06F15/16

    CPC分类号： G06F21/10 ,  G06F2221/2137

    摘要： A reception apparatus includes a first timer and sends to a distribution apparatus a first date-time clocked by the first timer. The distributing apparatus includes a second timer, and generates expiry information based on a difference obtained by subtracting, from the first date-time, a second date-time that is clocked by the second timer. The expiry information is used to adjust a usage expiry date-time of content. The reception apparatus judges whether playback of the content is permitted based on the first timer and the expiry information. With this arrangement, unauthorized use of the content beyond the expiry date-time is prevented.

    摘要翻译： 接收装置包括第一定时器，并且向配送装置发送由第一定时器计时的第一日期时间。 分发装置包括第二定时器，并且基于通过从第一日期时间减去由第二定时器计时的第二日期时间而获得的差产生到期信息。 过期信息用于调整内容的使用期限日期时间。 接收装置基于第一定时器和到期信息判断是否允许内容的回放。 通过这种安排，防止超出期满日期时间的内容的未经授权的使用。