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公开(公告)号：US08695041B2
公开(公告)日：2014-04-08
申请号：US11385184
申请日：2006-03-20
CPC分类号： H04N21/4532 , H04N5/44543 , H04N7/17318 , H04N21/4227 , H04N21/4516 , H04N21/454 , H04N21/47214 , H04N21/47217 , H04N21/4755 , H04N21/485 , H04N21/6582
摘要： A method for transferring DHCT settings includes receiving by a first digital home communication terminal (DHCT) a request for transmitting a DHCT setting from the first DHCT to a second DHCT, and transmitting the DHCT setting from the first DHCT to the second DHCT. Systems and other methods for transferring DHCT settings are also provided.
摘要翻译： 用于传送DHCT设置的方法包括：由第一数字家庭通信终端（DHCT）将从第一DHCT发送DHCT设置的请求接收到第二DHCT，以及将DHCT设置从第一DHCT发送到第二DHCT。 还提供了用于传送DHCT设置的系统和其他方法。
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公开(公告)号：US08782261B1
公开(公告)日：2014-07-15
申请号：US12417864
申请日：2009-04-03
摘要： Systems and methods for processing segment boundary notifications in a digital media receiver are disclosed. One such method includes the step of registering for notification of segment boundary events associated with a first service provided to the digital media receiver. The method further includes receiving a notification of one of the segment boundary events, while tuned to a second service different than the first service; and tuning to the first service responsive to the received notification.
摘要翻译： 公开了一种在数字媒体接收机中处理段边界通知的系统和方法。 一种这样的方法包括注册与提供给数字媒体接收机的第一服务相关联的片段边界事件的通知的步骤。 该方法还包括在调谐到不同于第一服务的第二服务时接收段边界事件之一的通知; 并响应于接收的通知调整到第一服务。
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公开(公告)号：US08548166B2
公开(公告)日：2013-10-01
申请号：US10602986
申请日：2003-06-25
CPC分类号： H04H60/23 , H04H20/78 , H04H60/15 , H04L63/0428 , H04L63/104 , H04L2463/101 , H04N7/162 , H04N7/1675 , H04N21/23476 , H04N21/44055 , H04N21/472
摘要： A cable television system provides conditional access to services. The cable television system includes a headend from which service “instances,” or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decrypting the instances for display to system subscribers. The service instances are partially-encrypted using public and/or private keys provided by service providers or central authorization agents. Keys used by the set tops for selective decryption may also be public or private in nature, and such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.
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公开(公告)号：US08542830B2
公开(公告)日：2013-09-24
申请号：US10602988
申请日：2003-06-25
CPC分类号： H04L63/04 , H04J2203/008 , H04L63/0428 , H04L63/0442 , H04L63/045 , H04L63/062 , H04L63/08 , H04L63/0823 , H04L63/12 , H04L63/123 , H04L63/126 , H04L2463/101 , H04N5/4401 , H04N7/162 , H04N7/163 , H04N7/1675 , H04N7/17354 , H04N21/2265 , H04N21/23476 , H04N21/26606 , H04N21/4405 , H04N21/4524 , H04N21/63345
摘要： A cable television system provides conditional access to services. The cable television system includes a headend from which service “instances,” or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decrypting the instances for display to system subscribers. The service instances are partially-encrypted using public and/or private keys provided by service providers or central authorization agents. Keys used by the set tops for selective decryption may also be public or private in nature, and such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.
摘要翻译： 有线电视系统提供条件访问服务。 有线电视系统包括广播服务“实例”或节目的前台，以及用于接收实例的多个机顶单元，并选择性地解密实例以供系统用户显示。 服务实例使用由服务提供商或中央授权代理提供的公共和/或私钥进行部分加密。 用于选择性解密的设置顶部使用的密钥也可以是公共的或私有的，并且可以在不同的时间重新分配这些密钥，以提供最小化盗版问题的有线电视系统。
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公开(公告)号：US20090147954A1
公开(公告)日：2009-06-11
申请号：US12352712
申请日：2009-01-13
CPC分类号： H04N7/163 , H04N7/1675 , H04N21/23476 , H04N21/2362 , H04N21/43607 , H04N21/44055
摘要： Systems and method for partial encryption are disclosed. One example method comprises: creating a program association table to include a first program number which identifies a program encrypted in accordance with a first encryption scheme, and a second program number which identifies the same program encrypted in accordance with a second encryption scheme; and creating a program map table for the same program to include first audio and video identifiers associated with the first encryption scheme and second audio and video identifiers associated with the second encryption scheme.
摘要翻译： 公开了用于部分加密的系统和方法。 一个示例性方法包括：创建程序关联表以包括标识根据第一加密方案加密的程序的第一程序号和标识根据第二加密方案加密的相同程序的第二程序号; 以及创建用于相同程序的程序映射表，以包括与第一加密方案相关联的第一音频和视频标识符以及与第二加密方案相关联的第二音频和视频标识符。
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6.发明授权公开(公告)号：US07360233B2
公开(公告)日：2008-04-15
申请号：US10235201
申请日：2002-09-05
CPC分类号： H04N21/4821 , H04N21/4104 , H04N21/4349 , H04N21/436 , H04N21/44231 , H04N21/443
摘要： Systems and methods are disclosed for providing objects to a remote digital home communication terminal (remote DHCT) via a gateway device located at a customer premises. One such method, among others, includes receiving a message from a remote DHCT requesting a carousel object, receiving the carousel object from a server device, and transmitting the carousel object to the remote DHCT.
摘要翻译： 公开了用于经由位于客户驻地的网关设备将对象提供给远程数字家庭通信终端（远程DHCT）的系统和方法。 一种这样的方法包括从远程DHCT请求转盘对象的接收消息，从服务器设备接收轮播对象，以及将轮播对象发送到远程DHCT。
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7.发明授权Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system 有权用于在条件访问覆盖系统中提供部分双加密流的方法和装置公开(公告)号：US07224798B2
公开(公告)日：2007-05-29
申请号：US10629839
申请日：2003-07-30
CPC分类号： H04N7/1675 , H04J2203/008 , H04L63/0428 , H04L63/0478 , H04L2463/101 , H04N5/4401 , H04N7/162 , H04N7/163 , H04N7/17354 , H04N21/2265 , H04N21/2347 , H04N21/23476 , H04N21/23608 , H04N21/23897 , H04N21/26606 , H04N21/43607 , H04N21/4405 , H04N21/4524 , H04N21/63345
摘要： The present invention is directed towards providing a partial dual-encrypted stream in a conditional access overlay system. The headend equipment includes an aligner, identifier, and remapper (AIR) device (615) that receives a clear stream and one or two encrypted streams, where the two encrypted streams have been encrypted by two different encryption schemes. The AIR device (615) identifies critical packets associated with the clear stream and subsequently allows two encrypted streams to pass and drops the critical packets of the clear stream. A multiplexer (640) then combines a percentage of the non-critical packets of the clear stream and the critical packets of the two encrypted streams to provide the partial dual-encrypted stream.
摘要翻译： 本发明旨在在条件访问覆盖系统中提供部分双加密流。 前端设备包括对准器，标识符和再映射器（AIR）设备（615），其接收清除流和一个或两个加密流，其中两个加密流已经被两种不同的加密方案加密。 AIR设备（615）识别与清除流相关联的关键分组，并且随后允许两个加密流传递和丢弃清除流的关键分组。 然后，多路复用器（640）组合清除流的非关键分组的百分比和两个加密流的关键分组以提供部分双加密流。
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8.发明授权公开(公告)号：US06526508B2
公开(公告)日：2003-02-25
申请号：US09748313
申请日：2000-12-26
申请人： Glendon L. Akins, III , Robert O. Banker , Michael S. Palgon , Howard G. Pinder , Anthony J. Wasilewski
发明人： Glendon L. Akins, III , Robert O. Banker , Michael S. Palgon , Howard G. Pinder , Anthony J. Wasilewski
IPC分类号： H04L900
CPC分类号： H04L63/04 , H04J2203/008 , H04L63/0428 , H04L63/0442 , H04L63/045 , H04L63/062 , H04L63/0823 , H04L63/12 , H04L63/123 , H04L63/126 , H04L2463/101 , H04N5/4401 , H04N7/162 , H04N7/163 , H04N7/1675 , H04N7/17354 , H04N21/2265 , H04N21/23476 , H04N21/26606 , H04N21/4405 , H04N21/4524 , H04N21/63345
摘要： A cable television system provides conditional access to services. The cable television system includes a headend from which service “instances”, or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decrypting the instances for display to system subscribers. The service instances are encrypted using public and/or private keys provided by service providers or central authorization agents. Keys used by the set tops for selective decryption may also be public or private in nature, and such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.
摘要翻译： 有线电视系统提供条件访问服务。 有线电视系统包括一个头端，从其中广播服务“实例”或程序，以及多个机顶单元，用于接收实例，并选择性地解密实例以供系统用户显示。 服务实例使用由服务提供商或中央授权代理提供的公共和/或私钥进行加密。 用于选择性解密的设置顶部使用的密钥也可以是公共的或私有的，并且可以在不同的时间重新分配这些密钥，以提供最小化盗版问题的有线电视系统。
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公开(公告)号：US06252964B1
公开(公告)日：2001-06-26
申请号：US09488230
申请日：2000-01-20
IPC分类号： H04L908
CPC分类号： H04L63/04 , H04J2203/008 , H04L63/0428 , H04L63/0442 , H04L63/045 , H04L63/062 , H04L63/08 , H04L63/0823 , H04L63/12 , H04L63/123 , H04L2463/101 , H04N5/4401 , H04N7/162 , H04N7/163 , H04N7/1675 , H04N7/17354 , H04N21/2265 , H04N21/23476 , H04N21/26606 , H04N21/4405 , H04N21/4524 , H04N21/63345
摘要： A cable television system provides conditional access to services. The cable television system includes a headend from which service “instances”, or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decrypting the instances for display to system subscribers. The service instances are encrypted using public and/or private keys provided by service providers or central authorization agents. Keys used by the set tops for selective decryption may also be public or private in nature, and such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.
摘要翻译： 有线电视系统提供条件访问服务。 有线电视系统包括一个头端，从其中广播服务“实例”或程序，以及多个机顶单元，用于接收实例，并选择性地解密实例以供系统用户显示。 服务实例使用由服务提供商或中央授权代理提供的公共和/或私钥进行加密。 用于选择性解密的设置顶部使用的密钥也可以是公共的或私有的，并且可以在不同的时间重新分配这些密钥，以提供最小化盗版问题的有线电视系统。
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10.发明授权Method and apparatus for uniquely encrypting a plurality of services at a transmission site 失效用于在传输站点唯一加密多个服务的方法和装置
公开(公告)号：US5381481A
公开(公告)日：1995-01-10
申请号：US101974
申请日：1993-08-04
IPC分类号： H04B7/204 , H04H20/28 , H04K1/02 , H04L9/08 , H04L9/20 , H04N7/16 , H04N7/167 , H04N21/2347 , H04L9/00 , H04L27/30
CPC分类号： H04H20/28 , H04B7/2041 , H04L9/16 , H04N21/2347 , H04N21/26606 , H04N21/4405 , H04N7/163 , H04N7/1675
摘要： Methods and apparatus are described for uniquely encrypting a plurality services at a transmission site and for decrypting selected services at a reception site while reducing the amount of encryption related information that must be transmitted to the reception site for decryption purposes. A unique spreading function is generated at the transmission site for each service to be transmitted. A random quantity is then transmitted, and the random quantity is convolved with each spreading function to produce a unique encryption seed for each service. At least a portion of each service is then encrypted using the unique encryption seeds produced for each service. Only the random quantity is transmitted to the reception site along with the encrypted portions of each service. None of the unique encryption seeds are transmitted. At the reception site, the unique spreading functions generated at the transmission site for each service are regenerated. A selected service is then decrypted by (i) convolving the received random quantity with the regenerated spreading function associated with the selected service to reproduce the unique encryption seed used to encrypt the received encrypted portion of the selected service at the transmission site, and (ii) decrypting the received encrypted portion of the selected service using the reproduced encryption seed. By transmitting only the random quantity, and then reproducing the encryption seeds at the reception site, the amount of encryption related information transmitted to the reception site is greatly reduced.
摘要翻译： 描述了用于在传输站点处唯一地加密多个服务并且在接收站点解密所选择的服务的方法和装置，同时减少必须发送到接收站点的用于解密的加密相关信息的量。 在传输站点生成要传输的每个服务的唯一扩展功能。 然后发送随机数，随机数量与每个扩展函数进行卷积，以产生每个服务的唯一加密种子。 然后，使用为每个服务生成的唯一加密种子来加密每个服务的至少一部分。 只有随机数量与每个服务的加密部分一起被发送到接收站点。 没有一个唯一的加密种子被传输。 在接收站点，在每个业务的传输站点生成的独特的扩展功能被重新生成。 然后通过以下步骤来解密所选择的服务：（i）使用与所选择的服务相关联的再生扩展功能卷积所接收的随机数，以再现用于加密在传输站点处所选服务的接收的加密部分的唯一加密种子， ）使用所再现的加密种子解密所选服务的接收的加密部分。 通过仅发送随机数，然后在接收站点再现加密种子，大大减少了发送到接收站点的加密相关信息量。
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