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    • 3. 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。
    • 6. 发明申请
    • Method of receiving session key in home network and method of reproducing content using the same
    • 在家庭网络中接收会话密钥的方法和使用它们再现内容的方法
    • US20060107051A1
    • 2006-05-18
    • US11268647
    • 2005-11-08
    • Jae-heung LeeMyung-sun KimSung-hyu HanYong-kuk YouBong-seon KimYoung-sun Yoon
    • Jae-heung LeeMyung-sun KimSung-hyu HanYong-kuk YouBong-seon KimYoung-sun Yoon
    • H04L9/00
    • H04L9/0822H04L63/062H04L2209/60H04L2463/101
    • A method of receiving a session key in a home network and a method of reproducing content using the same. The method of receiving a session key from a home server in a home network, includes: (a) whenever one of members of the home network changes, receiving and storing the session key and a session version indicating a session key generation sequence; (b) receiving a license necessary for reproducing predetermined content; and (c) determining a session key necessary for reproducing the predetermined content based on an encoding session version (ESV), which is a session version extracted from the license, and the stored session version. A home server transmits a session key and a session version to a user device whenever a subscriber to a home network changes, and the user device determines a session key using the session version, thereby performing a variety of domain administration by freely transmitting content between user devices.
    • 一种在家庭网络中接收会话密钥的方法以及使用该会话密钥再现内容的方法。 从家庭网络中的家庭服务器接收会话密钥的方法包括:(a)家庭网络的每个成员之一改变,接收和存储会话密钥以及指示会话密钥生成序列的会话版本; (b)接收再现预定内容所需的许可证; 以及(c)基于从许可证中提取的会话版本的编码会话版本(ESV)和所存储的会话版本,确定再现预定内容所必需的会话密钥。 家庭服务器每当家庭网络的用户改变时向用户设备发送会话密钥和会话版本,并且用户设备使用会话版本来确定会话密钥,从而通过在用户之间自由发送内容来执行各种域管理 设备。
    • 7. 发明授权
    • Method of copying and decrypting encrypted digital data and apparatus therefor
    • 复制和解密加密数字数据的方法及其装置
    • US07987361B2
    • 2011-07-26
    • US10958237
    • 2004-10-06
    • Hee-chul HanYun-sang KimYang-lim ChoiSung-hyu HanYong-kuk You
    • Hee-chul HanYun-sang KimYang-lim ChoiSung-hyu HanYong-kuk You
    • H04L29/06
    • G11B20/00442G06F21/10G11B20/00362G11B20/00492G11B20/00557
    • A method of and an apparatus for copying and decrypting encrypted digital data. The method of copying encrypted digital data includes encrypting a first media key block to be used for decryption of the encrypted digital data using a predetermined key of a second information storage medium and storing the encrypted digital data and the encrypted first media key block in the second information storage medium. Security of data encryption is heightened by not discarding an encryption key used for an initial encryption, encrypting the encryption key used for initial encryption using another encryption key used for a second encryption, and storing the encrypted encryption key with the data. Also, since unnecessary decryption and encryption of data are not repeated, the time required for copying data is reduced, and since data is transferred between apparatuses in an encrypted state, a security level is higher.
    • 一种用于复制和解密加密的数字数据的方法和装置。 复制加密的数字数据的方法包括使用第二信息存储介质的预定密钥加密要用于解密加密的数字数据的第一媒体密钥块,并将加密的数字数据和加密的第一媒体密钥块存储在第二媒体密钥块中 信息存储介质。 通过不丢弃用于初始加密的加密密钥来加密数据加密的安全性,使用用于第二加密的另一加密密钥加密用于初始加密的加密密钥,并将加密的加密密钥与该数据进行存储。 此外,由于不重复数据的不必要的解密和加密,所以减少了复制数据所需的时间,并且由于数据在加密状态的装置之间传送,所以安全级别更高。