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    • 3. 发明申请
    • REPRODUCING ENCRYPTED CONTENT USING REGION KEYS
    • 使用区域密钥重新生成加密内容
    • WO2005015557A3
    • 2005-05-12
    • PCT/IB2004051339
    • 2004-07-30
    • KONINKL PHILIPS ELECTRONICS NVKELLY DECLAN PDE HAAN WIEBEVAN GESTEL WILHELMUS J
    • KELLY DECLAN PDE HAAN WIEBEVAN GESTEL WILHELMUS J
    • G11B20/00
    • G11B20/00086
    • A reproducing apparatus (1) reproduces content stored in encrypted form on a record carrier (2). The record carrier (2) further stores a carrier region code (RCC) indicating in which region content shall be allowed to be reproduced and an encrypted region key (RK) for decrypting content, in order to make it more difficult to hack a reproducing apparatus (1) for it to play record carriers having a wrong region code. The reproducing apparatus (1) has a region code storage (10) for storing a device region code (RCD), and a device key storage (11) for storing a device key (DK), which device key (DK) is different for all regions. The reproducing apparatus (1) reads a carrier region code (RCC) from the record carrier (2), checks if the carrier region code (RCC) matches the device region code (RCD), reads the encrypted region key (RK) from the record carrier (2), decrypts the encrypted region key (RK) using said device key (DK) in case the carrier region code (RCC) matches the device region code (RCD), reads the encrypted content from the record carrier (2), decrypts the encrypted content using the decrypted region key (RCD) and outputs the decrypted content.
    • 再现设备(1)再现以加密形式存储在记录载体(2)上的内容。 记录载体(2)还存储指示允许再现哪个区域内容的载体区域代码(RCC)和用于解密内容的加密区域密钥(RK),以便更难以破解再现装置 (1)它播放具有错误区域码的记录载体。 再现设备(1)具有用于存储设备区域码(RCD)的区域码存储器(10)和用于存储设备密钥(DK)的设备密钥存储器(11),该设备密钥(DK) 所有地区。 再现设备(1)从记录载体(2)读取载体区域码(RCC),检查载体区域码(RCC)是否匹配装置区域码(RCD),从该装置区域码 记录载体(2)在载体区域码(RCC)与设备区域码(RCD)匹配的情况下使用所述设备密钥(DK)解密加密区域密钥(RK),从记录载体(2)读取加密内容, 使用解密的区域密钥(RCD)解密加密的内容并输出解密的内容。
    • 5. 发明申请
    • METHOD OF RECORDING DATA ON A DUAL-LAYER OPTICAL WRITE-ONCE DISC
    • 在双层光学写入盘上记录数据的方法
    • WO2006111905A3
    • 2007-03-08
    • PCT/IB2006051163
    • 2006-04-13
    • KONINKL PHILIPS ELECTRONICS NVDE HAAN WIEBE
    • DE HAAN WIEBE
    • G11B27/034
    • G11B27/034G11B2220/216G11B2220/218G11B2220/235G11B2220/2562G11B2220/2583
    • A method of recording data on a dual- layer optical write-once disc (10) , comprising the steps of : creating a first-layer video-data fragment (28) on a first layer (20) of the optical disc, the first-layer video-data fragment extending from a minimum first-layer video- data radius within a data zone of the disc to an outer radius within the data zone of the disc, the outer radius defining a layer boundary (38) , creating a second- layer video-data fragment (40) on a second layer (22) of the optical disc, the second-layer video-data fragment extending from minimum second-layer video-data radius within the data zone of the disc to the layer boundary, - writing video data (32) to the first-layer video-data fragment, starting from an inner radius of the disc up to a maximum first-layer video-data radius smaller than or equal to the layer boundary, writing video data to the second- layer video-data fragment, starting from the layer boundary, and - if the maximum first-layer video-data radius is smaller than the layer boundary, writing a Buffer Cell (66) to the first-layer video-data fragment extending from the maximum first-layer video-data radius to the layer boundary. A corresponding dual-layer optical disc and an apparatus for recording data on a dual- layer optical disc, are also disclosed.
    • 一种在双层光学一次写入盘(10)上记录数据的方法,包括以下步骤:在光盘的第一层(20)上创建第一层视频数据片段(28),第一层 从光盘的数据区域内的最小第一层视频数据半径延伸到盘的数据区域内的外半径,所述外半径限定层边界(38),创建第二层视频数据片段 - 在所述光盘的第二层(22)上的层视频数据片段(40),所述第二层视频数据片段从所述盘的数据区域内的最小第二层视频数据半径延伸到所述层边界 - 将视频数据(32)写入第一层视频数据片段,从盘的内半径开始直到小于或等于层边界的最大第一层视频数据半径,将视频数据写入 第二层视频数据片段,从层边界开始,以及 - 如果最大第一层视频数据片段 ius小于层边界,将缓冲单元(66)写入从最大第一层视频数据半径延伸到层边界的第一层视频数据片段。 还公开了一种对应的双层光盘和用于在双层光盘上记录数据的装置。