Information recording/playback apparatus and method
    12.
    发明授权
    Information recording/playback apparatus and method 有权
    信息记录/播放装置和方法

    公开(公告)号:US07225339B2

    公开(公告)日:2007-05-29

    申请号:US09980272

    申请日:2001-04-05

    IPC分类号: H04L9/00

    摘要: In a tree-structural key distribution system, renewed data of a master key and medium key are sent along with a key renewal block (KRB). KRB is such that each of devices included as leaves of a tree structure has a leaf key and restricted node key. A specific KRB can be generated for a group identified by a specific node and distributed to the group to restrict a device for which the key can be renewed. Any device not belonging to the group cannot decrypt the key, whereby the security of key distribution can be assured. Especially in a system using a generation-managed master key, a master key renewed with KRB can be distributed.

    摘要翻译: 在树结构密钥分配系统中,主密钥和中密钥的更新数据与密钥更新块(KRB)一起发送。 KRB使得作为树结构的叶片包括的每个设备具有叶密钥和受限节点密钥。 可以为由特定节点识别的组生成特定的KRB,并且分配给组以限制可以更新密钥的设备。 任何不属于该组的设备都不能解密该密钥,从而可以确保密钥分配的安全性。 特别是在使用生成管理的主密钥的系统中,可以分配用KRB更新的主密钥。

    Apparatus, method, and computer program for processing information
    13.
    发明授权
    Apparatus, method, and computer program for processing information 有权
    用于处理信息的装置,方法和计算机程序

    公开(公告)号:US07876480B2

    公开(公告)日:2011-01-25

    申请号:US11224962

    申请日:2005-09-14

    IPC分类号: H04N7/025 H04N7/00

    摘要: An information processing apparatus includes a selector for selecting removal information concerning contents to be removed, the removal information prepared on a per content basis for the contents to be removed and including a value uniquely determined from data within a data range of whole or part of a content to be removed, a first range that is the data range, and a second range that is a removal range represented by the position of the first range, a detector for detecting a range at a predetermined position within the whole content, having the same range as the first range contained in the removal information selected by the selector and the same value as the value uniquely determined and contained in the removal information, and a remover for removing a predetermined content based on the second range contained in the removal information selected by the selector if the detector detects the range at the predetermined position.

    摘要翻译: 一种信息处理装置,包括:选择器,用于选择关于要移除的内容的删除信息;按照内容准备的要删除的内容的删除信息,并且包括从全部或部分的数据范围内的数据唯一确定的值 要删除的内容,作为数据范围的第一范围,以及作为第一范围的位置表示的移除范围的第二范围,用于检测在整个内容内的预定位置的范围的检测器,具有相同的 范围作为由选择器选择的删除信息中包含的第一范围和与删除信息中唯一确定和包含的值相同的值;以及删除器,用于基于由删除信息选择的删除信息中包含的第二范围来删除预定内容 如果检测器检测到在预定位置处的范围,则选择器。

    Apparatus, method and program for processing information
    14.
    发明申请
    Apparatus, method and program for processing information 有权
    用于处理信息的装置,方法和程序

    公开(公告)号:US20100299130A1

    公开(公告)日:2010-11-25

    申请号:US12800178

    申请日:2010-05-10

    IPC分类号: G06F9/30 G06F9/455

    摘要: Apparatus and method for processing information may determine whether a migration condition exists by a source information processing unit executing a program. When a migration condition is determined to exist by the source information processing unit, a destination information processing unit may determine whether an instruction to be executed of the program is a predetermined instruction. The instruction to be executed is converted by an instruction emulator, when a result of a determination by the destination information processing unit is the predetermined instruction.

    摘要翻译: 用于处理信息的装置和方法可以确定执行程序的源信息处理单元是否存在迁移条件。 当源信息处理单元确定迁移条件存在时,目的地信息处理单元可以确定要执行的程序的指令是否是预定指令。 当目的地信息处理单元的确定结果为预定指令时,由指令仿真器转换要执行的指令。

    Information recording and/or reproducing method and information recording and/or reproducing device
    15.
    发明授权
    Information recording and/or reproducing method and information recording and/or reproducing device 失效
    信息记录和/或再现方法和信息记录和/或再现装置

    公开(公告)号:US07283633B2

    公开(公告)日:2007-10-16

    申请号:US10049434

    申请日:2001-06-21

    IPC分类号: H04L9/00

    摘要: An information reproducing method and an information reproducing device in which the key renewal block (KRB) of the latest version is selectively used to encrypt the content to store the encrypted contents in a recording medium. A plural number of KRBs of different generations and versions are stored in a recording medium. If the latest KRB is detected, it is stored in a memory unit within the recording and/or reproducing device. A plural number of KRBs having plural different generations or versions are stored on the recording medium. With the present method and device, in storing the content in the recording medium, the latest usable one of the KRB in the memory unit of the reproducing device and plural KRBs on the recording medium is detected to acquire an encrypting key, such as a media key, to execute the content encryption. In this manner, the encrypted content based on a KRB of a newer version can at all times be stored on the recording medium.

    摘要翻译: 一种信息再现方法和信息再现装置,其中选择性地使用最新版本的密钥更新块(KRB)来加密内容以将加密的内容存储在记录介质中。 将不同代和版本的多个KRB存储在记录介质中。 如果检测到最新的KRB,则将其存储在记录和/或再现装置内的存储单元中。 具有多个不同代数或版本的多个KRB被存储在记录介质上。 利用本方法和装置,在将内容存储在记录介质中时,检测再现装置的存储单元中的KRB中的最新可用的一个和记录介质上的多个KRB,以获取诸如媒体之类的加密密钥 密钥,执行内容加密。 以这种方式,可以始终将基于较新版本的KRB的加密内容存储在记录介质上。