Key management system for digital content player
    2.
    发明授权
    Key management system for digital content player 有权
    数字内容播放器的密钥管理系统

    公开(公告)号:US06398245B1

    公开(公告)日:2002-06-04

    申请号:US09203307

    申请日:1998-12-01

    IPC分类号: G06F1700

    摘要: A method of managing keys used by a digital content player on a computer system. According to the method, digital content data encrypted with a first encrypting key is decrypted using a first decrypting key, and re-encrypted using a second encrypting key. A second decrypting key is encrypted using a third encrypting key to produce an encrypted second decrypting key. In one preferred method, an encrypted first decrypting key that was encrypted using a fourth encrypting key is received, and the encrypted first decrypting key is decrypted using a fourth decrypting key to reproduce the first decrypting key. A digital content player for use on a computer system is also provided. The content player includes a decrypter that decrypts digital content data, which was encrypted with a first encrypting key, using a first decrypting key so as to produce the content data. An encrypter re-encrypts the content data using a second encrypting key and encrypts a second decrypting key using a third encrypting key. In one preferred content player, a receiver receives an encrypted first decrypting key that was encrypted using a fourth encrypting key, and the decrypter decrypts the encrypted first decrypting key using a fourth decrypting key to reproduce the first decrypting key.

    摘要翻译: 一种管理数字内容播放器在计算机系统上使用的密钥的方法。 根据该方法,使用第一解密密钥解密用第一加密密钥加密的数字内容数据,并使用第二加密密钥重新加密。 使用第三加密密钥对第二解密密钥进行加密,以产生加密的第二解密密钥。 在一个优选方法中,接收使用第四加密密钥加密的加密的第一解密密钥,并且使用第四解密密钥对加密的第一解密密钥进行解密,以再现第一解密密钥。 还提供了用于计算机系统的数字内容播放器。 内容播放器包括解密器,其使用第一解密密钥对用第一加密密钥加密的数字内容数据进行解密,以产生内容数据。 加密器使用第二加密密钥重新加密内容数据,并使用第三加密密钥加密第二解密密钥。 在一个优选的内容播放器中,接收器接收使用第四加密密钥加密的加密的第一解密密钥,并且解密器使用第四解密密钥对加密的第一解密密钥进行解密,以再现第一解密密钥。

    Secure electronic content management system
    3.
    发明授权
    Secure electronic content management system 有权
    安全的电子内容管理系统

    公开(公告)号:US06574609B1

    公开(公告)日:2003-06-03

    申请号:US09152756

    申请日:1998-09-14

    IPC分类号: G06F1760

    摘要: A method of managing content data and associated metadata. According to the method, the content data and the associated metadata are generated. The content data is transferred to a content host, and the metadata and usage condition data for the associated content are transferred to an electronic store. The metadata and/or the usage condition data are altered in order to form promotional data, and the promotional data is transferred from the electronic store to a customer's system. In one preferred method, the content data is encrypted with a first encrypting key before being transferred to the content host. The first encrypting key is encrypted with a second encrypting key, and the encrypted first encrypting key is transferred along with the metadata and usage condition data to the electronic store. Additionally, the encrypted first encrypting key is transferred along with the promotional data to the customer's system.

    摘要翻译: 管理内容数据和相关元数据的方法。 根据该方法,生成内容数据和相关联的元数据。 将内容数据传送到内容主机,并将相关内容的元数据和使用条件数据传送到电子商店。 元数据和/或使用条件数据被改变以形成促销数据,促销数据从电子商店传送到客户的系统。 在一个优选的方法中,内容数据在被传送到内容主机之前用第一加密密钥加密。 第一加密密钥用第二加密密钥加密,并且加密的第一加密密钥与元数据和使用条件数据一起传送到电子商店。 此外,加密的第一加密密钥与促销数据一起传送到客户的系统。

    Multimedia player for an electronic content delivery system
    4.
    发明授权
    Multimedia player for an electronic content delivery system 有权
    用于电子内容传送系统的多媒体播放器

    公开(公告)号:US06418421B1

    公开(公告)日:2002-07-09

    申请号:US09208774

    申请日:1998-12-10

    IPC分类号: G06F1760

    摘要: A system for tracking usage of digital content on user devices. Electronic stores coupled to a network sell licenses to play digital content data to users. Content players, which receive from the network the licensed content data, are used to play the licensed content data. Additionally, a logging site that is coupled to the network tracks the playing of the content data. In particular, the logging site receives play information from the network, and the play information includes the number of times that the content data has been played by the associated content player. Also provided is a method for tracking usage of digital content on user devices. According to the method, a license to play digital content data is sold to a user, and the licensed content data is transmitted to a content player for the user. Further, information is transmitted to a logging site whenever the content data is played by the content player or copied from the content player to an external medium so that usage of the licensed content data can be tracked.

    摘要翻译: 用于跟踪用户设备上数字内容的使用的系统。 耦合到网络的电子商店销售许可证以向用户播放数字内容数据。 从网络接收许可内容数据的内容播放器用于播放许可的内容数据。 此外,耦合到网络的记录站点跟踪内容数据的播放。 特别地,记录站点从网络接收播放信息,并且播放信息包括内容数据已被相关联的内容播放器播放的次数。 还提供了用于跟踪用户设备上的数字内容的使用的方法。 根据该方法,向用户出售播放数字内容数据的许可证,并将许可内容数据发送给用户的内容播放器。 此外,无论何时内容播放器播放内容数据或从内容播放器复制到外部介质,信息被传送到记录站点,从而可以跟踪许可内容数据的使用。

    Method and system for recording in-progress broadcast programs
    5.
    发明授权
    Method and system for recording in-progress broadcast programs 失效
    用于录制进行中的广播节目的方法和系统

    公开(公告)号:US06173112B2

    公开(公告)日:2001-01-09

    申请号:US08980459

    申请日:1997-11-28

    IPC分类号: H04N591

    CPC分类号: H04N5/782 H04N5/781 H04N5/85

    摘要: In a data communication network wherein broadcasted transmissions include a portion uniquely identifying the content of the following transmission and wherein transmissions are repeated at predetermined intervals, a communication unit for operating within the system includes a receiver, a processor, and memory for storing data and instructions for the processor. The receiver receives transmissions over the communication network. The communication unit receives a record command from a user that causes it to record the audio/video content being broadcasted during a subsequent transmission thereof. The memory includes space for storing the program that causes the communication unit to automatically record the transmission at the time the transmission is re-broadcasted.

    摘要翻译: 在数据通信网络中,其中广播的传输包括唯一地标识后续传输的内容的部分,并且其中以预定间隔重复传输,用于在系统内操作的通信单元包括接收器,处理器和用于存储数据和指令的存储器 为处理器。 接收机通过通信网络接收传输。 通信单元接收来自用户的记录命令,使得其在其后续发送期间记录正在广播的音频/视频内容。 存储器包括用于存储使通信单元自动记录传输被重新传播时的传输的程序的空间。

    System for tracking end-user electronic content usage
    6.
    发明授权
    System for tracking end-user electronic content usage 有权
    跟踪最终用户电子内容使用的系统

    公开(公告)号:US06389538B1

    公开(公告)日:2002-05-14

    申请号:US09177096

    申请日:1998-10-22

    IPC分类号: G06F1130

    摘要: A system for tracking usage of digital content on user devices. Electronic stores coupled to a network sell licenses to play digital content data to users. Content players, which receive from the network the licensed content data, are used to play the licensed content data. Additionally, a logging site that is coupled to the network tracks the playing of the content data. In particular, the logging site receives play information from the network, and the play information includes the number of times that the content data has been played by the associated content player. Also provided is a method for tracking usage of digital content on user devices. According to the method, a license to play digital content data is sold to a user, and the licensed content data is transmitted to a content player for the user. Further, information is transmitted to a logging site whenever the content data is played by the content player or copied from the content player to an external medium so that usage of the licensed content data can be tracked.

    摘要翻译: 用于跟踪用户设备上数字内容的使用的系统。 耦合到网络的电子商店销售许可证以向用户播放数字内容数据。 从网络接收许可内容数据的内容播放器用于播放许可的内容数据。 此外,耦合到网络的记录站点跟踪内容数据的播放。 特别地,记录站点从网络接收播放信息,并且播放信息包括内容数据已被相关联的内容播放器播放的次数。 还提供了用于跟踪用户设备上的数字内容的使用的方法。 根据该方法,向用户出售播放数字内容数据的许可证,并将许可内容数据发送给用户的内容播放器。 此外,无论何时内容播放器播放内容数据或从内容播放器复制到外部介质,信息被传送到记录站点,从而可以跟踪许可内容数据的使用。