Information playing/reproducing apparatus and method
    2.
    发明授权
    Information playing/reproducing apparatus and method 有权
    信息播放/再现装置和方法

    公开(公告)号:US08112811B2

    公开(公告)日:2012-02-07

    申请号:US12613255

    申请日:2009-11-05

    IPC分类号: H04L9/00

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。

    Information recording/playback apparatus and method
    3.
    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:US07882564B2

    公开(公告)日:2011-02-01

    申请号:US11626288

    申请日:2007-01-23

    IPC分类号: H04L9/00

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。

    INFORMATION RECORDING/REPRODUCING APPARATUS AND METHOD
    4.
    发明申请
    INFORMATION RECORDING/REPRODUCING APPARATUS AND METHOD 有权
    信息记录/再现装置和方法

    公开(公告)号:US20100054462A1

    公开(公告)日:2010-03-04

    申请号:US12613255

    申请日:2009-11-05

    IPC分类号: G06F12/14 H04L9/18 H04L9/06

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。

    INFORMATION RECORDING/PLAYBACK APPARATUS AND METHOD
    5.
    发明申请
    INFORMATION RECORDING/PLAYBACK APPARATUS AND METHOD 有权
    信息记录/播放装置和方法

    公开(公告)号:US20070116278A1

    公开(公告)日:2007-05-24

    申请号:US11626288

    申请日:2007-01-23

    IPC分类号: H04N7/167

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。

    Information recording/reproducing device
    6.
    发明授权
    Information recording/reproducing device 有权
    信息记录/再现装置

    公开(公告)号:US07239702B1

    公开(公告)日:2007-07-03

    申请号:US09807703

    申请日:2000-08-16

    IPC分类号: G06F12/14

    摘要: Contents data that have been enciphered and transmitted are recorded as they are on a recording medium, and the contents key used to encipher these data is enciphered in a way used in this recording system and is recorded on the medium. Moreover, a step is taken to ensure that fine trick plays can be performed. In recording contents data that have been enciphered and transmitted, the contents data themselves are recorded in the enciphered state on the recording medium. However, the contents data are decoded by a contents data decoding circuit 46, and a map file containing necessary management information for reproduction is created by a map file creating circuit 47 and this file is recorded together with the contents data.

    摘要翻译: 已经被加密和发送的内容数据原样记录在记录介质上,并且用于加密这些数据的内容密钥以该记录系统中使用的方式被加密并被记录在介质上。 此外,采取步骤以确保可以执行精细特技播放。 在记录已经被加密和发送的内容数据时,内容数据本身以加密状态记录在记录介质上。 然而,由内容数据解码电路46对内容数据进行解码,并且通过地图文件创建电路47创建包含用于再现的必要的管理信息的地图文件,并且该文件与内容数据一起被记录。

    Information recording and/or reproducing apparatus
    7.
    发明申请
    Information recording and/or reproducing apparatus 审中-公开
    信息记录和/或再现装置

    公开(公告)号:US20070110238A1

    公开(公告)日:2007-05-17

    申请号:US11647395

    申请日:2006-12-29

    IPC分类号: H04N7/167

    摘要: Contents data that have been enciphered and transmitted are recorded as they are on a recording medium, and the contents key used to encipher these data is enciphered in a way used in this recording system and is recorded on the medium. Moreover, a step is taken to ensure that fine trick plays can be performed. In recording contents data that have been enciphered and transmitted, the contents data themselves are recorded in the enciphered state on the recording medium. However, the contents data are decoded by a contents data decoding circuit 46, and a map file containing necessary management information for reproduction is created by a map file creating circuit 47 and this file is recorded together with the contents data.

    摘要翻译: 已经被加密和发送的内容数据原样记录在记录介质上,并且用于加密这些数据的内容密钥以该记录系统中使用的方式被加密并被记录在介质上。 此外,采取步骤以确保可以执行精细特技播放。 在记录已经被加密和发送的内容数据时,内容数据本身以加密状态记录在记录介质上。 然而,由内容数据解码电路46对内容数据进行解码,并且通过地图文件创建电路47创建包含用于再现的必要的管理信息的地图文件,并且该文件与内容数据一起被记录。

    Information recording/playback apparatus and method
    8.
    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:US07181624B2

    公开(公告)日:2007-02-20

    申请号:US09980390

    申请日:2001-04-04

    IPC分类号: H04L9/00

    摘要: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.

    摘要翻译: 使用与TS分组的到达时间相对应的附加到包括在传输流中的每个TS(传输流)分组的ATS(到达时间戳)来生成加密块数据的块密钥。 ATS是根据到达时间的随机数据,因此可以生成块唯一密钥,这增强了对数据密码分析的保护。 块密钥是从ATS与设备唯一的密钥,诸如主密钥,盘唯一密钥,标题 - 唯一密钥等的记录介质等的组合生成的。 由于使用ATS来生成块密钥,因此可能不会在记录介质中提供用于存储每个块的加密密钥的任何区域。