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    • 1. 发明授权
    • Method of transmitting and reproducing content processed by various DRM systems
    • 发送和再现由各种DRM系统处理的内容的方法
    • US08151356B2
    • 2012-04-03
    • US11191137
    • 2005-07-28
    • Chi-hurn KimYang-lim ChoiYoung-sun Yoon
    • Chi-hurn KimYang-lim ChoiYoung-sun Yoon
    • G06F1/00
    • H04N21/2347G06F21/10G06F21/6236G06Q10/10H04L9/083H04L2209/603H04N7/1675H04N21/4405H04N21/63345H04N21/8355
    • Provided is a method of transmitting content processed according to first digital rights management (DRM) to a device that uses second DRM. The method includes generating a ticket using a first license server and a second license server, the first license server issuing a first license for use in the first DRM and the second license server issuing a second license for use in the second DRM; the second device obtaining a second content key required to process the content using the ticket and the second DRM; and the second device receiving the content from the first device and processing the content using the second content key and the second DRM. The ticket includes use control information that specifies a restriction of use of the content, and the second content key required to process the content using the second DRM.
    • 提供了一种将根据第一数字版权管理(DRM)处理的内容发送到使用第二DRM的设备的方法。 该方法包括使用第一许可证服务器和第二许可服务器生成故障单,所述第一许可服务器发出用于所述第一DRM的第一许可证,所述第二许可服务器发出用于所述第二DRM中的第二许可证; 所述第二设备获得使用所述票证和所述第二DRM处理所述内容所需的第二内容密钥; 并且所述第二设备从所述第一设备接收所述内容,并且使用所述第二内容密钥和所述第二DRM来处理所述内容。 票包括指定内容使用限制的使用控制信息和使用第二DRM处理内容所需的第二内容密钥。
    • 9. 发明授权
    • Method of packaging broadcast contents
    • 打包播放内容的方法
    • US08301571B2
    • 2012-10-30
    • US11402981
    • 2006-04-13
    • Sun-nam LeeMyung-sun KimSung-hyu HanYoung-sun YoonJae-heung LeeBong-seon KimMoon-young Choi
    • Sun-nam LeeMyung-sun KimSung-hyu HanYoung-sun YoonJae-heung LeeBong-seon KimMoon-young Choi
    • G06F21/00
    • G06Q30/02
    • A method of packaging broadcast contents are provided. The method includes: extracting a copy control bit from input broadcast contents and determining whether the broadcast contents will be stored after being encrypted based on the extracted copy control bit; creating usage rule information which includes an encryption method of the broadcast contents if it is determined that the broadcast contents will be stored after being encrypted; extracting the copy control bit from each new broadcast content sequentially input and detecting broadcast contents which include copy control bits indicating that the broadcast contents will be stored without being encrypted; and encrypting the input broadcast contents through the broadcast contents before the detected broadcast contents using the encryption method and packaging and storing the encrypted broadcast contents and the usage rule information. Therefore, the unauthorized copying of broadcast contents transmitted through a digital broadcast receiver can be prevented.
    • 提供一种封装广播内容的方法。 该方法包括:从输入广播内容中提取复制控制位,并根据所提取的复制控制位确定是否在加密之后存储广播内容; 创建使用规则信息,如果确定在加密之后将存储广播内容,则包括广播内容的加密方法; 从每个新的广播内容中提取复制控制位,顺序地输入和检测包括指示广播内容将不被加密的复制控制位的广播内容; 并且通过使用加密方法的检测到的广播内容之前的广播内容来加密输入的广播内容,并且包装和存储加密的广播内容和使用规则信息。 因此,可以防止通过数字广播接收机发送的广播内容的未经授权的复制。