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    Method of packaging broadcast contents
    1.
    发明授权
    Method of packaging broadcast contents 有权
    打包播放内容的方法

    公开(公告)号：US08301571B2

    公开(公告)日：2012-10-30

    申请号：US11402981

    申请日：2006-04-13

    申请人： Sun-nam Lee ,  Myung-sun Kim ,  Sung-hyu Han ,  Young-sun Yoon ,  Jae-heung Lee ,  Bong-seon Kim ,  Moon-young Choi

    发明人： Sun-nam Lee ,  Myung-sun Kim ,  Sung-hyu Han ,  Young-sun Yoon ,  Jae-heung Lee ,  Bong-seon Kim ,  Moon-young Choi

    IPC分类号： G06F21/00

    CPC分类号： G06Q30/02

    摘要： 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.

    摘要翻译： 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。

    Method of measuring round trip time and proximity checking method using the same
    5.
    发明授权
    Method of measuring round trip time and proximity checking method using the same 失效
    测量往返时间的方法及使用其的接近检查方法

    公开(公告)号：US07653713B2

    公开(公告)日：2010-01-26

    申请号：US11340794

    申请日：2006-01-27

    申请人： Sung-hyu Han ,  Myung-sun Kim ,  Young-sun Yoon ,  Sun-nam Lee ,  Bong-seon Kim ,  Jae-heung Lee

    发明人： Sung-hyu Han ,  Myung-sun Kim ,  Young-sun Yoon ,  Sun-nam Lee ,  Bong-seon Kim ,  Jae-heung Lee

    IPC分类号： G06F15/16

    CPC分类号： H04L12/66

    摘要： A method of measuring round trip time (RTT) and a proximity checking method using the same. The method of measuring RTT includes: transmitting a hashed second random number and starting the RTT measurement; and receiving a hashed first random number from a device that received the hashed second random number and ending the RTT measurement, thereby greatly reducing repetitive encryption and decryption operations in the proximity check using a repetitive RTT measurement.

    摘要翻译： 一种测量往返时间（RTT）的方法和使用该方法的接近检查方法。 测量RTT的方法包括：发送哈希二次随机数，开始RTT测量; 并从接收到散列的第二随机数的设备接收散列的第一随机数，并结束RTT测量，从而大大减少了使用重复RTT测量的邻近检查中的重复加密和解密操作。

    Method and apparatus for managing digital content
    7.
    发明申请
    Method and apparatus for managing digital content 有权
    用于管理数字内容的方法和装置

    公开(公告)号：US20060253398A1

    公开(公告)日：2006-11-09

    申请号：US11410029

    申请日：2006-04-25

    申请人： Myung-sun Kim ,  Young-sun Yoon ,  Sun-nam Lee ,  Bong-seon Kim ,  Jae-heung Lee ,  Sung-hyu Han

    发明人： Myung-sun Kim ,  Young-sun Yoon ,  Sun-nam Lee ,  Bong-seon Kim ,  Jae-heung Lee ,  Sung-hyu Han

    IPC分类号： G06Q99/00

    CPC分类号： G06F21/10

    摘要： A method and apparatus for managing digital content, which can detect the leakage of an encryption key when the encryption key used for encrypting the digital content is leaked or cracked. When the encrypted digital content is decrypted by an illegal device, a module linked with the encrypted digital content is automatically driven and a digital content managing apparatus is then notified that the encrypted digital content has been decrypted by the illegal device such that the digital content managing apparatus can change the encryption key. Thus, it is possible to prevent the digital content from being continuously leaked due to the use of the same encryption key for encrypting subsequent digital content.

    摘要翻译： 一种用于管理数字内容的方法和装置，当用于加密数字内容的加密密钥泄漏或破解时，可以检测加密密钥的泄漏。 当加密的数字内容被非法设备解密时，自动驱动与加密的数字内容链接的模块，然后通知数字内容管理装置加密的数字内容已被非法设备解密，使得数字内容管理 设备可以改变加密密钥。 因此，可以防止数字内容由于使用相同的加密密钥来加密后续数字内容而不断地泄漏。

    Domain management method and apparatus
    10.
    发明申请
    Domain management method and apparatus 审中-公开
    域管理方法和装置

    公开(公告)号：US20070172069A1

    公开(公告)日：2007-07-26

    申请号：US11410033

    申请日：2006-04-25

    申请人： Bong-seon Kim ,  Myung-sun Kim ,  Sung-hyu Han ,  Young-sun Yoon ,  Sun-nam Lee ,  Jae-heung Lee

    发明人： Bong-seon Kim ,  Myung-sun Kim ,  Sung-hyu Han ,  Young-sun Yoon ,  Sun-nam Lee ,  Jae-heung Lee

    IPC分类号： H04L9/00

    CPC分类号： H04L63/10 ,  G06F21/10 ,  H04L9/0891 ,  H04L63/065 ,  H04L2209/60 ,  H04L2463/101

    摘要： A method and apparatus of protecting digital content within a domain is provided. if a device registered with a domain withdraws from the domain, a domain key used in the domain before withdrawal of the device is updated to a domain key which cannot be used by the device; and the domain key not exposed to the device is transmitted to a plurality of devices currently registered with the domain so that only the currently registered devices have the most recent domain key. Therefore, devices not registered with the domain and devices which previously registered with the home domain but withdrawn from the home domain can be prevented from using digital content currently shared within the domain. In addition, registered devices that withdraw from the home domain may use digital content legitimately downloaded from the home domain before they withdrew from the domain.

    摘要翻译： 提供一种保护域内数字内容的方法和装置。 如果注册域的设备从域中退出，则在提取设备之前在域中使用的域密钥被更新为设备不能使用的域密钥; 并且未暴露于设备的域密钥被发送到当前在域中注册的多个设备，使得只有当前注册的设备具有最新的域密钥。 因此，可以防止未注册到域的设备和以前在本地域注册但从归属域撤回的设备使用当前在域内共享的数字内容。 此外，退出本地域的注册设备可以在他们退出域之前使用从归属域合法下载的数字内容。