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公开(公告)号：US06900828B2
公开(公告)日：2005-05-31
申请号：US10484066
申请日：2002-07-19
IPC分类号： H04B1/16 , H04L1/00 , H04L12/56 , H04N5/21 , H04N5/44 , H04N7/24 , H04N7/26 , H04N19/89 , H04W24/00 , H04W28/14 , H04W72/12 , H04N7/06
CPC分类号： H04L1/08 , H04H20/30 , H04H20/42 , H04H20/72 , H04L1/007 , H04L1/0086 , H04L2001/0093 , H04N5/211 , H04N5/4401 , H04N19/37 , H04N19/39 , H04N19/67 , H04N19/89 , H04N21/234327 , H04N21/2365 , H04N21/2383 , H04N21/4347 , H04N21/4382 , H04N21/4392 , H04N21/44004 , H04N21/44209
摘要： In a digital broadcast communications system, a higher priority component and a lower priority component are broadcast from a transmitter to a receiver. Each of these components generates a main and a supplemental signal, and each supplemental signal is advanced in time with respect to the corresponding main signal. The main and supplemental signals for both the higher and lower priority components are combined into a single signal, which is broadcast to a receiver. In the receiver, the time advanced supplemental signals are stored in a buffer to time align them with their corresponding main signals. Both main signals are processed in the normal manner in the receiver, and are also monitored to detect a fading event. When a fading event is detected, the corresponding buffered supplemental signals are substituted for the faded main signals and normal processing continues.
摘要翻译： 在数字广播通信系统中，从发射机到接收机广播较高优先权分量和较低优先权分量。 这些部件中的每一个产生主要信号和补充信号，并且每个补充信号相对于相应的主信号在时间上提前。 用于较高和较低优先级组件的主要和补充信号被组合成单个信号，其被广播到接收机。 在接收机中，时间先进的补充信号被存储在缓冲器中以使它们与其相应的主信号对准。 两个主信号在接收机中以正常方式进行处理，并被监控以检测衰落事件。 当检测到衰落事件时，相应的缓冲补充信号代替衰落的主信号，并继续正常处理。
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2.发明授权Digital rights management (DRM) enabled portable playback device, method and system 有权数字版权管理（DRM）启用便携式播放设备，方法和系统公开(公告)号：US08640219B2
公开(公告)日：2014-01-28
申请号：US11922442
申请日：2005-06-23
CPC分类号： H04L63/102 , G06F21/10 , G06F21/16 , G06F2221/0786 , H04L67/28 , H04L69/329 , H04L2463/101
摘要： A method for enabling access to digital rights managed (DRM) content from a server to a portable playback device using a device that functions as a proxy for enabling communication between the server and the portable playback device. The method provides for establishing a connection with a device capable of operating as a gateway device for passing data between the portable playback device and the server, requesting that the device establish a connection with the server and operate as a proxy for enabling data exchange between the portable playback device and the server, sending to the server, upon establishing the connection with the server via the device operating as a proxy, data indicating DRM solutions supported by the portable playback device, and a list comprising requested DRM content to be downloaded to the portable playback device, and receiving from the server, via the device operating as a proxy, the requested DRM content and DRM rules associated with the received content.
摘要翻译： 一种用于使用作为用于实现服务器与便携式再现设备之间的通信的代理的设备的服务器到便携式回放设备来访问数字版权管理（DRM）内容的方法。 该方法提供建立与能够作为网关设备操作的设备的连接，用于在便携式再现设备和服务器之间传递数据，请求设备与服务器建立连接并作为代理进行操作，以实现数据交换 便携式播放装置和服务器，在通过作为代理操作的装置建立与服务器的连接之后发送到服务器，指示由便携式播放装置支持的DRM解决方案的数据，以及包括要下载到 便携式播放设备，以及经由作为代理操作的设备从服务器接收与所接收的内容相关联的所请求的DRM内容和DRM规则。
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公开(公告)号：US08027386B2
公开(公告)日：2011-09-27
申请号：US10542976
申请日：2004-01-21
IPC分类号： H04N7/12
CPC分类号： H04N9/8042 , H04L1/02 , H04L1/08 , H04L27/02 , H04L2001/0098 , H04N5/85 , H04N19/00 , H04N19/107 , H04N19/12 , H04N19/142 , H04N19/164 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/188 , H04N19/20 , H04N19/36 , H04N19/37 , H04N19/39 , H04N19/61 , H04N19/63 , H04N19/89 , H04N19/895 , H04N21/234327 , H04N21/234363 , H04N21/234381 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/2662 , H04N21/4347 , H04N21/4382 , H04N21/4383 , H04N21/631
摘要： A method for staggercasting, includes encoding a first signal representing content using encoding having successive independent decoding segments and encoding a second signal representing the content using encoding having successive independent decoding segments respectively corresponding to the independent decoding segments of the first encoded signal. A composite signal including the first and second encoded signals is generated in which the first encoded signal is delayed with respect to the second encoded signal. If an error is detected in the composite signal during a portion of an independent decoding segment of the delayed first encoded signal, then the corresponding independent decoding segment of the received second encoded signal is decoded to produce the content, otherwise, the received delayed first encoded signal is decoded to produce the content.
摘要翻译： 一种用于交错的方法包括使用具有连续的独立解码段的编码对使用编码的第一信号进行编码，并且使用具有分别对应于第一编码信号的独立解码段的连续独立解码段的编码来编码表示内容的第二信号。 产生包括第一和第二编码信号的复合信号，其中第一编码信号相对于第二编码信号被延迟。 如果在延迟的第一编码信号的独立解码段的一部分期间在复合信号中检测到错误，则对所接收的第二编码信号的相应独立解码段进行解码以产生内容，否则，接收到的延迟的第一编码信号 信号被解码以产生内容。
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公开(公告)号：US08027381B2
公开(公告)日：2011-09-27
申请号：US10542972
申请日：2004-01-27
IPC分类号： H04N7/12
CPC分类号： H04N21/4347 , H04L1/02 , H04L1/08 , H04L27/02 , H04L2001/0098 , H04N19/107 , H04N19/12 , H04N19/142 , H04N19/164 , H04N19/169 , H04N19/172 , H04N19/188 , H04N19/39 , H04N19/61 , H04N19/895 , H04N21/234327 , H04N21/234363 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/26275 , H04N21/4382 , H04N21/4383 , H04N21/631
摘要： A method and apparatus for staggercasting includes encoding a set of signals representing content. The set of encoded signals is capable of being decoded to produce a corresponding set of decoded signals, each having a quality which is different from the qualities of the decoded signals corresponding to the other encoded signals. A composite signal is generated which includes the set of encoded signals, staggered in time. The set of encoded signals extracting from the composite signal. Errors in the set of extracted encoded signals are detected to produce a subset of available extracted encoded signals which are not erroneous. A content representative signal at a selectable desired quality is then decoded.
摘要翻译： 用于交错广播的方法和装置包括对表示内容的一组信号进行编码。 编码信号的集合能够被解码以产生对应的一组解码信号，每个解码信号的质量与对应于其它编码信号的解码信号的质量不同。 产生包括编码信号的集合的复合信号，其在时间上交错。 从复合信号提取的编码信号集合。 检测提取的编码信号组中的错误以产生不是错误的可用提取的编码信号的子集。 然后对可选择的期望质量的内容代表信号进行解码。
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5.发明授权公开(公告)号：US08126061B2
公开(公告)日：2012-02-28
申请号：US10543483
申请日：2004-01-22
IPC分类号： H04N7/18
CPC分类号： H04N9/8042 , H04L1/02 , H04L1/08 , H04L27/02 , H04L2001/0098 , H04N5/85 , H04N19/00 , H04N19/107 , H04N19/12 , H04N19/142 , H04N19/164 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/188 , H04N19/20 , H04N19/36 , H04N19/37 , H04N19/39 , H04N19/61 , H04N19/63 , H04N19/89 , H04N19/895 , H04N21/234327 , H04N21/234363 , H04N21/234381 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/2662 , H04N21/4347 , H04N21/4382 , H04N21/4383 , H04N21/631
摘要： A method and apparatus for staggercasting to a mobile receiver, includes encoding a first signal representing content at a first quality and encoding a second signal representing the content at a second quality different than the first quality. A composite signal comprising the first and second encoded signals, wherein the first encoded signal is delayed with respect to the second encoded signal, is broadcast. The broadcast composite signal receiving at the mobile receiver where the received encoded signal having the lower quality is extracted from the received composite signal and the extracted encoded signal is decoded.
摘要翻译： 一种用于交错移动接收机的方法和装置，包括：以第一质量编码表示内容的第一信号，并以不同于第一质量的第二质量编码表示内容的第二信号。 包括第一编码信号和第二编码信号的复合信号，其中第一编码信号相对于第二编码信号被延迟，被广播。 在接收到的接收到的具有较低质量的编码信号的移动接收机处接收到的广播复合信号从接收到的合成信号中提取出来并被解码。
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公开(公告)号：US08059711B2
公开(公告)日：2011-11-15
申请号：US10543044
申请日：2004-01-20
IPC分类号： H04N7/12
CPC分类号： H04N9/8042 , H04L1/02 , H04L1/08 , H04L27/02 , H04L2001/0098 , H04N5/85 , H04N19/00 , H04N19/107 , H04N19/12 , H04N19/142 , H04N19/164 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/188 , H04N19/20 , H04N19/36 , H04N19/37 , H04N19/39 , H04N19/61 , H04N19/63 , H04N19/89 , H04N19/895 , H04N21/234327 , H04N21/234363 , H04N21/234381 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/2662 , H04N21/4347 , H04N21/4382 , H04N21/4383 , H04N21/631
摘要： A method and apparatus for staggercasting, encodes a first signal representing content and encodes a second signal representing the content using encoding relatively more robust than the encoding of the first encoded content representative signal. A composite signal including at least the first and second encoded signals is generated, in which one of the first and second encoded signals is delayed with respect to the other encoded signal. If an error is detected in the composite signal, then the undelayed encoded signal is decoded to reproduce the content. Otherwise, the delayed encoded signal is decoded to reproduce the content.
摘要翻译： 一种用于交错广播的方法和装置，对表示内容的第一信号进行编码，并使用比第一编码内容代表信号的编码更加鲁棒的编码对使用表示内容的第二信号进行编码。 生成包括至少第一和第二编码信号的复合信号，其中第一和第二编码信号中的一个相对于另一编码信号被延迟。 如果在复合信号中检测到错误，则对未延迟的编码信号进行解码以再现内容。 否则，对延迟编码的信号进行解码以再现内容。
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公开(公告)号：US08036262B2
公开(公告)日：2011-10-11
申请号：US10543045
申请日：2004-01-26
IPC分类号： H04N7/12
CPC分类号： H04N9/8042 , H04L1/02 , H04L1/08 , H04L27/02 , H04L2001/0098 , H04N5/85 , H04N19/00 , H04N19/107 , H04N19/12 , H04N19/142 , H04N19/164 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/188 , H04N19/20 , H04N19/36 , H04N19/37 , H04N19/39 , H04N19/61 , H04N19/63 , H04N19/89 , H04N19/895 , H04N21/234327 , H04N21/234363 , H04N21/234381 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/2662 , H04N21/4347 , H04N21/4382 , H04N21/4383 , H04N21/631
摘要： A method and apparatus for storing staggercasted content includes encoding a set of signals representing content. The set of signals is capable of being decoded to produce a corresponding set of decoded signals, each decoded signal having a quality different from the qualities of the decoded signals corresponding to the other encoded signals. A composite signal comprising the set of encoded signals, staggered in time, is generated. The set of encoded signals is extracted from the composite signal. Errors in the set of extracted encoded signals are detected to produce a subset of available extracted encoded signals which are not erroneous. A content representative signal at a selectable desired quality is decoded. The decoded content representative signal is then stored in a storage device.
摘要翻译： 用于存储交错内容的方法和装置包括对表示内容的一组信号进行编码。 该组信号能够被解码以产生相应的一组解码信号，每个解码信号的质量与对应于其它编码信号的解码信号的质量不同。 产生包括时间上错开的编码信号集合的复合信号。 从复合信号中提取编码信号的集合。 检测提取的编码信号组中的错误以产生不是错误的可用提取的编码信号的子集。 可选择期望质量的内容代表信号被解码。 然后将经解码的内容代表信号存储在存储设备中。
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公开(公告)号：US08699564B2
公开(公告)日：2014-04-15
申请号：US10543043
申请日：2004-01-21
CPC分类号： H04N9/8042 , H04L1/02 , H04L1/08 , H04L27/02 , H04L2001/0098 , H04N5/85 , H04N19/00 , H04N19/107 , H04N19/12 , H04N19/142 , H04N19/164 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/188 , H04N19/20 , H04N19/36 , H04N19/37 , H04N19/39 , H04N19/61 , H04N19/63 , H04N19/89 , H04N19/895 , H04N21/234327 , H04N21/234363 , H04N21/234381 , H04N21/2362 , H04N21/2365 , H04N21/2383 , H04N21/2662 , H04N21/4347 , H04N21/4382 , H04N21/4383 , H04N21/631
摘要： A method and apparatus for staggercasting includes encoding a first signal representing content having a time duration and a second signal also representing that content. A time delay period is specified for the time duration of the content. A composite signal, comprising the first and second encoded signals, is generated. In the composite signal the first encoded signal is delayed with respect to the second encoded signal by the time delay period for the time duration of the content. If an error is detected in the composite signal, then the received second encoded signal is decoded to produce the content, otherwise the delayed received first encoded signal is decoded to produce the content.
摘要翻译： 用于交错广播的方法和装置包括编码表示具有持续时间的内容的第一信号和也表示该内容的第二信号。 为内容的持续时间指定时间延迟时间。 产生包括第一和第二编码信号的复合信号。 在复合信号中，第一编码信号相对于第二编码信号延迟内容持续时间的时间延迟周期。 如果在复合信号中检测到错误，则对接收到的第二编码信号进行解码以产生内容，否则对延迟的接收到的第一编码信号进行解码以产生内容。
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公开(公告)号：US20100315561A1
公开(公告)日：2010-12-16
申请号：US12806456
申请日：2010-08-13
CPC分类号： H04N21/4349 , H04N7/17318 , H04N21/26275 , H04N21/4384 , H04N21/44209
摘要： A method and apparatus for staggercasting a plurality of content representative signals includes encoding a first and a corresponding second signal representing each of the plurality of content representative signals. A composite signal is generated comprising the plurality of first and second encoded signals. In the composite signal, each respective second encoded signal is delayed with respect to the corresponding first encoded signal. The first and second encoded signal representing a selected one of the content representative signals is extracted to reproduce the selected content representative signal. The extracted first encoded signal is decoded if an error is detected in the extracted second encoded signal, otherwise the extracted second encoded signal is decoded. When a different content representative signal is newly selected, the first extracted encoded signal is decoded until the delayed second extracted encoded signal is available.
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公开(公告)号：US20090210701A1
公开(公告)日：2009-08-20
申请号：US11921424
申请日：2005-06-23
CPC分类号： H04L9/0891 , H04L9/0825 , H04L9/16 , H04L63/045 , H04L63/068 , H04L63/0823 , H04N7/163 , H04N7/165 , H04N7/1675 , H04N7/17318 , H04N7/17336 , H04N21/25816 , H04N21/63345 , H04N21/63775
摘要： A method for enabling an access device to securely access content from at least a content provider and prevent a cloned access device from accessing such content. During registration of the access device with the content provider, the access device requests from a designated certificate authority a certificate having a public key of the content provider therein. Upon authentication of the certificate, the access device generates a key and uses the public key to exchange the key with the content provider. The key is then used for subsequent secure communications between the access device and the content provider. In this manner, a cloned device does not have access to the key and is unable to download content from the content provider.
摘要翻译： 一种用于使得访问设备能够从至少内容提供商安全地访问内容并防止克隆的访问设备访问这样的内容的方法。 在访问设备与内容提供商的注册期间，访问设备从指定的证书颁发机构请求具有内容提供商的公开密钥的证书。 在认证证书时，访问设备生成密钥并使用公共密钥与内容提供商交换密钥。 密钥随后用于接入设备和内容提供商之间的后续安全通信。 以这种方式，克隆的设备不能访问密钥，并且不能从内容提供商下载内容。
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