ACCESS DEVICE, INFORMATION RECORDING DEVICE, INFORMATION RECORDING SYSTEM, FILE MANAGEMENT METHOD, AND PROGRAM
    81.
    发明申请
    ACCESS DEVICE, INFORMATION RECORDING DEVICE, INFORMATION RECORDING SYSTEM, FILE MANAGEMENT METHOD, AND PROGRAM 有权
    访问设备,信息记录设备,信息记录系统,文件管理方法和程序

    公开(公告)号:US20110022645A1

    公开(公告)日:2011-01-27

    申请号:US12934334

    申请日:2009-04-01

    IPC分类号: G06F17/30

    摘要: An information recording device, which includes a nonvolatile memory whose areas are managed using an FAT file system and enhances the reliability of directory entries using a cyclic shift checksum, recalculates the cyclic shift checksum efficiently and performs seeking at a higher speed. A nonvolatile memory (25) of an information recording device 2 is managed using an FAT file system. In the memory, a plurality of directory entries are allocated to a single file. The device enhances the reliability of the directory entries using a cyclic shift checksum, and manages information indicating the position and the size of a storage area of file data using an extent information entry (203). The device further uses an update information entry (204) and a dummy entry (205).

    摘要翻译: 包括使用FAT文件系统管理区域的非易失性存储器并且使用循环移位校验和提高目录条目的可靠性的信息记录装置重新计算循环移位校验和并以更高的速度执行寻找。 使用FAT文件系统来管理信息记录装置2的非易失性存储器(25)。 在存储器中,将多个目录条目分配给单个文件。 该装置使用循环移位校验和增强目录条目的可靠性,并且使用扩展信息条目来管理指示文件数据的存储区域的位置和大小的信息(203)。 设备还使用更新信息条目(204)和虚拟条目(205)。

    Method for generating data for detection of tampering, and method and apparatus for detection of tampering
    82.
    发明授权
    Method for generating data for detection of tampering, and method and apparatus for detection of tampering 有权
    用于产生用于检测篡改的数据的方法,以及用于检测篡改的方法和装置

    公开(公告)号:US07730320B2

    公开(公告)日:2010-06-01

    申请号:US11223939

    申请日:2005-09-13

    IPC分类号: H04L9/00

    摘要: In a target apparatus which stores at least one piece of domain key information in a first area and a plurality of pieces of content key information each associated with any one of the domain key information in a second area, a method for generating data for detecting tampering of the content key information. The method comprises the steps of encrypting the content key information associated with one of the domain key information using a chain encryption technique, extracting data at predetermined positions in the encrypted content key information, concatenating the pieces of data extracted at the predetermined positions in the encrypted content key information to obtain concatenated data, performing a hash calculation with respect to the concatenated data to obtain a hash value, storing check values corresponding to the data at the predetermined positions in plain text, in the target apparatus, and storing the hash value in the target apparatus.

    摘要翻译: 在将第一区域中存储至少一段领域密钥信息和与第二区域中的任何一个域密钥信息相关联的多条内容密钥信息的目标设备中,存储用于检测篡改的数据的方法 的内容密钥信息。 该方法包括以下步骤:使用链式加密技术加密与一个领域密钥信息相关联的内容密钥信息,在加密的内容密钥信息中的预定位置提取数据,连接在加密的内容密钥信息中的预定位置提取的数据段 内容密钥信息以获得连接的数据,对所述连接的数据执行哈希计算以获得哈希值,将与所述预定位置上的数据相对应的校验值存储在目标设备中,并将哈希值存储在 目标设备。

    Information recording medium and region management method for a plurality of recording regions each managed by independent file system
    84.
    发明授权
    Information recording medium and region management method for a plurality of recording regions each managed by independent file system 有权
    用于由独立文件系统管理的多个记录区域的信息记录介质和区域管理方法

    公开(公告)号:US07653796B2

    公开(公告)日:2010-01-26

    申请号:US10546453

    申请日:2004-02-19

    IPC分类号: G06F13/00

    摘要: A region management method for an information recording medium capable of maintaining data interchangeability among devices and preventing malfunction when one information recording medium shared among devices different in type or number of file systems that can be interpreted by devices is provided. A recording region of the information recording medium is divided into a plurality of regions, and region information such as position and size of each region is held in the information recording medium. Different file systems are constructed in individual data recording regions. In response to a command from an information processing apparatus, accessible regions by the information processing apparatus are changed over by, for example, referring to validity flag information that indicates a presently valid region.

    摘要翻译: 一种用于信息记录介质的区域管理方法,用于在设备中可以解释的文件系统的类型或数量不同的设备之间共享一个信息记录介质时,能够维护设备之间的数据可互换性并防止故障。 信息记录介质的记录区域被划分为多个区域,并且各区域的位置和大小等区域信息保存在信息记录介质中。 在各个数据记录区域中构建不同的文件系统。 响应于来自信息处理设备的命令,通过例如参考指示当前有效区域的有效性标志信息来改变信息处理设备的可访问区域。

    Server device and program management system
    85.
    发明授权
    Server device and program management system 有权
    服务器设备和程序管理系统

    公开(公告)号:US07620811B2

    公开(公告)日:2009-11-17

    申请号:US10511751

    申请日:2003-04-16

    IPC分类号: H04L9/00

    摘要: A server apparatus includes a CPU, a RAM, a cipher processing unit for carrying out encryption and decryption, a communication processing unit for carrying out communication with an information processing terminal, and a data storage unit for storing information that does not require confidentiality. The server apparatus also includes a distribution information storage unit for storing information such as a program to be distributed, and a specific information distribution history holding unit for holding a specific information distribution history for managing a record of a program specific information of a program previously distributed to the information processing terminal.

    摘要翻译: 服务器装置包括CPU,RAM,用于执行加密和解密的密码处理单元,用于与信息处理终端进行通信的通信处理单元,以及用于存储不需要机密性的信息的数据存储单元。 服务器装置还包括:分发信息存储单元,用于存储要分发的程序的信息;以及特定信息分发历史保存单元,用于保存用于管理预先分发的节目的节目特定信息的记录的特定信息分发历史 到信息处理终端。

    RECORDING MEDIUM STORING MANAGEMENT INFORMATION FOR CONTENT ATTRIBUTE AND RECORDING DEVICE AND PLAYBACK DEVICE FOR THE RECORDING MEDIUM
    86.
    发明申请
    RECORDING MEDIUM STORING MANAGEMENT INFORMATION FOR CONTENT ATTRIBUTE AND RECORDING DEVICE AND PLAYBACK DEVICE FOR THE RECORDING MEDIUM 审中-公开
    记录媒体记录和记录设备的记录存储管理信息和记录介质的回放设备

    公开(公告)号:US20090231968A1

    公开(公告)日:2009-09-17

    申请号:US12065098

    申请日:2006-08-29

    IPC分类号: G11B20/10 G11B7/24

    摘要: A semiconductor recording medium stores attribute management information for managing various attribute information on a content (genre, composer, artist, album, title, etc.) for each item; and sort management information managing information on a sort order when information managed by the attribute management information is sorted by a predetermined procedure. The attribute management information contains character data indicating items to be managed and pointer information indicating link relationship between the attribute management information. The sort management information contains information on the sort order when all the entries in each of attribute management information are sorted by a predetermined procedure for each of attribute management information.

    摘要翻译: 半导体记录介质存储用于管理关于每个项目的内容(类型,作曲者,艺术家,专辑,标题等)的各种属性信息的属性管理信息; 并且当由属性管理信息管理的信息按照预定的过程排序时,对排序顺序管理信息进行排序管理信息。 属性管理信息包含指示要管理的项目的字符数据和指示属性管理信息之间的链接关系的指针信息。 排序管理信息包含关于每个属性管理信息中的每个属性管理信息中的所有条目按照每个属性管理信息的预定过程排序的排序顺序的信息。

    Data Storing Method, Data Playback Method, Data Recording Device, Data Playback Device, and Recording Medium
    88.
    发明申请
    Data Storing Method, Data Playback Method, Data Recording Device, Data Playback Device, and Recording Medium 有权
    数据存储方法,数据回放方法,数据记录装置,数据回放装置和记录介质

    公开(公告)号:US20090013195A1

    公开(公告)日:2009-01-08

    申请号:US11813740

    申请日:2006-01-18

    IPC分类号: H04L9/06

    摘要: Provided is a method for performing high-speed search for a content key associated with encrypted content in the case of a key-separation-type content management method where content keys and their respective pieces of encrypted content are correlated by ID information and stored in different recording media. An external recording medium is used to store a plurality of content files that contain: their respective pieces of encrypted content that are encrypted with different encryption keys; and their respective content IDs, each being associated with a corresponding piece of the encryption content, and a semiconductor recording medium is used to store a list that contains: pieces of encryption key storage location information, each indicating where a corresponding one of the encryption keys is stored; and the content IDs, the list being sorted in accordance with the content IDs. When encrypted content is played back, the list is searched to find encryption key storage location information associated with a content ID that matches the content ID of the encrypted content, and the encryption key is read based on the encryption key storage location information.

    摘要翻译: 提供了一种用于在密钥分离型内容管理方法的情况下执行与加密内容相关联的内容密钥的高速搜索的方法,其中内容密钥及其各自的加密内容通过ID信息相关并存储在不同的密钥分离型内容管理方法中 录音媒体 外部记录介质用于存储多个内容文件,其中包含:使用不同加密密钥加密的其各自的加密内容; 以及它们各自的内容ID,每个内容ID与相应的一部分加密内容相关联,并且半导体记录介质用于存储列表,该列表包含:加密密钥存储位置信息,每个加密密钥存储位置信息指示相应的一个加密密钥 被存储 和内容ID,该列表根据内容ID进行排序。 当回放加密内容时,搜索列表以找到与与加密内容的内容ID匹配的内容ID相关联的加密密钥存储位置信息,并且基于加密密钥存储位置信息来读取加密密钥。