System and method for protecting a title key in a secure distribution system for recordable media content
    1.
    发明申请
    System and method for protecting a title key in a secure distribution system for recordable media content 失效
    用于保护用于可记录媒体内容的安全分发系统中的标题密钥的系统和方法

    公开(公告)号:US20050177740A1

    公开(公告)日:2005-08-11

    申请号:US10775596

    申请日:2004-02-09

    摘要: A title key protection system includes a title key with recordable media content; storage in a repository is not required. The title key is decrypted when needed by a clearinghouse, and then re-encrypted. The title key confers rights from the content owners to the user to play and copy the content for personal use. A user downloads encrypted content from a content repository. The user's media recording device extracts an encrypted title key from the content and obtains a media key block and media ID from the physical media on which the content will be recorded. The encrypted title key, media key block, and media ID are transmitted to a clearinghouse. The clearinghouse decrypts the title key and derives a media unique key from the media key block and media ID. The clearinghouse re-encrypts the title key with the media unique key and returns this re-encrypted title key to the media recording device for recording with the content on the physical media.

    摘要翻译: 标题密钥保护系统包括具有可记录媒体内容的标题密钥; 存储库中的存储不是必需的。 标题密钥在清算所需要时解密,然后重新加密。 标题密钥赋予内容所有者对用户播放和复制用于个人使用的内容的权利。 用户从内容存储库下载加密的内容。 用户的媒体记录设备从内容中提取加密的标题密钥,并从内容将被记录在物理介质上获取媒体密钥块和媒体ID。 加密的标题密钥,媒体密钥块和媒体ID被发送到结算所。 清算所解密标题密钥,并从媒体密钥块和媒体ID导出媒体唯一密钥。 票据交换所使用媒体唯一键重新加密标题密钥,并将该重新加密的标题密钥返回到媒体记录设备,以便用物理介质上的内容进行记录。

    METHOD AND SYSTEM FOR SPECIFYING A SELECTION OF CONTENT SEGMENTS STORED IN DIFFERENT FORMATS
    2.
    发明申请
    METHOD AND SYSTEM FOR SPECIFYING A SELECTION OF CONTENT SEGMENTS STORED IN DIFFERENT FORMATS 失效
    用于指定选择存储在不同格式中的内容部分的方法和系统

    公开(公告)号:US20070297757A1

    公开(公告)日:2007-12-27

    申请号:US11777937

    申请日:2007-07-13

    IPC分类号: H04N5/76 G11B27/00

    CPC分类号: G11B27/034

    摘要: A method, system and program product are described for specifying a selection of content segments stored in different formats. The invention involves receiving specification of a plurality of portions of first content stored in a first format, the specification identifying beginning and ending frames for each portion, and building a list comprising a starting mark and ending mark for each selected portion of first content, the list for use in accessing corresponding portions of the same content stored as second content in a second format.

    摘要翻译: 描述了用于指定以不同格式存储的内容段的选择的方法,系统和程序产品。 本发明涉及接收以第一格式存储的第一内容的多个部分的指定,该规范标识每个部分的开始和结束帧,以及构建包括第一内容的每个所选部分的起始标记和结束标记的列表, 列表,用于以第二格式访问存储为第二内容的相同内容的相应部分。