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公开(公告)号：US07614077B2
公开(公告)日：2009-11-03
申请号：US10121033
申请日：2002-04-10
申请人： Glenn E. Brew , Marco M. Hurtado , David Medina , Jonathan P. Munson , Stefan Nusser , Giovanni Pacifici , Alaa S. You{grave over (s)}sef
发明人： Glenn E. Brew , Marco M. Hurtado , David Medina , Jonathan P. Munson , Stefan Nusser , Giovanni Pacifici , Alaa S. You{grave over (s)}sef
CPC分类号： G06F21/10
摘要： A system for providing persistent access control of protected content is disclosed. The method on a client system includes sending a first request for authentication of the client to a server system. Subsequently, the client is authenticated by the server. Next, a user on the client attempts to access a file comprising a trailer and content encrypted with an encrypting key. Then, a second request for access to the content is sent to the server by the client, wherein an identifier from the trailer is included in the second request. The identifier identifies the content or an access control policy of the content. The server determines that the second request is in accordance with an access control policy associated with the content, and grants access to the content. Lastly, the client accesses the content in accordance with the access control policy.
摘要翻译： 公开了一种用于提供受保护内容的持续访问控制的系统。 客户端系统上的方法包括向服务器系统发送客户端认证的第一请求。 随后，客户端被服务器认证。 接下来，客户端上的用户尝试访问包括预告片的文件和用加密密钥加密的内容。 然后，客户端向服务器发送访问内容的第二请求，其中来自预告片的标识符被包括在第二请求中。 标识符识别内容的内容或访问控制策略。 服务器确定第二请求符合与内容相关联的访问控制策略，并授予对内容的访问权。 最后，客户端根据访问控制策略访问内容。
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12.发明授权公开(公告)号：US06832198B1
公开(公告)日：2004-12-14
申请号：US09606469
申请日：2000-06-29
IPC分类号： G10L2100
CPC分类号： G11B20/10527 , G10L19/167 , G11B20/00007
摘要： The present invention provides a system, computer program product and a method for overlapping boundary data of an audio information track which includes ending data from a previous track and starting data from a succeeding track. By doing this, the ending data from a previous track and the beginning data from a succeeding track are available for the compression process. The compression program then manipulates the additional appended data in order to generate the compressed audio. Later, by severing the overlapping appended additional information before recombining the tracks, the resulting No-Pause CD audio stream is free from distortion and mismatch.
摘要翻译： 本发明提供了一种系统，计算机程序产品和用于重叠音频信息轨道的边界数据的方法，该音频信息轨道包括从先前轨道结束数据并从后续轨道开始数据。 通过这样做，来自前一轨道的结束数据和来自后续轨道的开始数据可用于压缩处理。 压缩程序然后操纵附加的附加数据以便生成压缩音频。 之后，通过在重新组合轨道之前切断重叠附加的附加信息，所得到的No-Pause CD音频流没有失真和不匹配。
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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
CPC分类号： G06F21/10 , G06F2221/0737 , G06F2221/2135 , G06Q20/3674 , G06Q20/382 , G06Q20/3829 , G06Q30/0617 , G06Q30/0623 , G06Q30/0633 , H04L9/0822 , H04L9/0825 , H04L63/0428 , H04L67/18 , H04L69/329 , H04L2209/603 , H04L2463/101 , H04L2463/102 , H04W4/02
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。
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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
CPC分类号： G06F21/10 , G06F2221/0737 , G06F2221/2135 , G06Q20/3674 , G06Q20/382 , G06Q20/3829 , G06Q30/0617 , G06Q30/0623 , G06Q30/0633 , H04L9/0822 , H04L9/0825 , H04L63/0428 , H04L67/18 , H04L69/329 , H04L2209/603 , H04L2463/101 , H04L2463/102 , H04W4/02
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。
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15.发明授权
公开(公告)号：US5493651A
公开(公告)日：1996-02-20
申请号：US017548
申请日：1993-02-16
申请人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
发明人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
CPC分类号： G06F15/17375 , G06F13/4022 , H04L12/50
摘要： A system and method is provided for dequeuing connection requests in a data communications system comprising a calling subsystem and a called subsystem connected by a serial simplex switch. The connection requests are made by the calling subsystem to the called subsystem by sending a connect request message to the switch and queuing the connect request message in a buffer therein. The switch establishes a connection between the calling subsystem and the called subsystem by thereafter queuing the connect request message in a buffer in the called subsystem. Concurrently, the switch sends a connect request acknowledge message to the calling subsystem while the calling subsystem sends a connect request dequeue message to the switch. To prevent loss of synchronization between the calling subsystem and the switch, the connect request dequeue message received by the switch is interpreted as a disconnect request message and the connect request acknowledge message received by the calling subsystem is interpreted as a connect request dequeue acknowledge message. The connect request dequeue message and the disconnect request message are identically serially encoded, as are the connect request acknowledge message and the connect request dequeue acknowledge message, to enable such interpretation.
摘要翻译： 提供了一种系统和方法，用于在包括由串行单工交换机连接的调用子系统和被叫子系统的数据通信系统中出列连接请求。 通过向交换机发送连接请求消息并将连接请求消息排队在其中的缓冲器中，由呼叫子系统向被叫子系统进行连接请求。 交换机之后通过在被叫子系统的缓冲区中排队连接请求消息来建立呼叫子系统和被叫子系统之间的连接。 同时，交换机向呼叫子系统发送连接请求确认消息，而主叫子系统向交换机发送连接请求出队消息。 为了防止主叫子系统和交换机之间的同步丢失，交换机接收到的连接请求出队消息被解释为断开请求消息，由呼叫子系统接收到的连接请求确认消息被解释为连接请求出队确认消息。 连接请求出局消息和断开请求消息被同样地串行编码，连接请求确认消息和连接请求出队确认消息也是如此，以实现这种解释。
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公开(公告)号：US5317565A
公开(公告)日：1994-05-31
申请号：US9602
申请日：1993-01-26
申请人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
发明人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
CPC分类号： H04L49/107 , H04L12/50 , H04L49/101 , H04L49/106 , H04L49/255 , H04Q11/0478 , H04J2203/0005 , H04L2012/445 , H04L49/205 , H04L49/351
摘要： A sequencing scheme is provided for prioritizing bus operations occurring in simplex switches which interconnect subsystems in a data communications system, thereby yielding improved aggregate system data throughput. The sequencing scheme provides procedures which simultaneously accommodate (i) concurrently pending requests to a first control bus which processes only circuit switched operations and (ii) concurrently pending requests to a second control bus which processes only packet switched operations, in an order which optimizes link level control message throughput of the simplex switch. The control messages which are coordinated by the sequencing scheme include connect and disconnect requests, connect and disconnect request acknowledgments, and data acknowledgments. All connect request and disconnect requests are managed by a connection processing (CP) bus, which operates as a circuit switching bus, and all data acknowledgments and connect request acknowledgments from subsystems attached to a cascaded switch are made over an out-of-band (OB) bus, which operates as a packet switching bus. Because connect and disconnect operations over the CP bus can proceed independently of acknowledgment operations over the OB bus, the sequencing procedures for each of the control buses are permitted to operate independently and simultaneously.
摘要翻译： 提供了一种排序方案，用于对在单向开关中发生的总线操作进行优先级排序，这些交换机将数据通信系统中的子系统互连，从而产生改进的聚合系统数据吞吐量。 排序方案提供了同时适应（i）同时处理的请求到仅处理电路交换操作的第一控制总线的步骤，以及（ii）以仅处理分组交换操作的第二控制总线的同时待决请求，其优化链接 单工交换机的级别控制消息吞吐量。 由排序方案协调的控制消息包括连接和断开请求，连接和断开请求确认以及数据确认。 所有连接请求和断开请求由连接处理（CP）总线管理，连接处理（CP）总线作为电路交换总线工作，所有数据确认和连接到级联交换机的子系统的请求确认通过带外（ OB）总线，作为分组交换总线工作。 因为通过CP总线的连接和断开操作可以独立于通过OB总线的确认操作进行，所以允许每个控制总线的排序程序独立且同时地进行操作。
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