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1. 发明授权

US07725557B2 Client-side caching of streaming media content 有权
标题翻译：流媒体内容的客户端缓存
公开(公告)号：US07725557B2
公开(公告)日：2010-05-25
申请号：US10179770
申请日：2002-06-24
申请人： Anders E. Klemets , Troy D. Batterberry , Eduardo P. Oliveira
发明人： Anders E. Klemets , Troy D. Batterberry , Eduardo P. Oliveira
IPC分类号： G06F15/16
CPC分类号： H04N21/6373 , H04N5/76 , H04N7/17336 , H04N21/23106 , H04N21/440281 , H04N21/47202
摘要： Various functionality with respect to streaming media content is made available to users. Such functionality includes one or more of: streaming media content at a rate independent of the encoded bit rate of the content, allowing streaming of content to continue even when the user has selected various shuttle control options (e.g., pause, stop, fast forward, seek, rewind, etc.), allowing streaming content to be recorded for playback at a later time, and allowing streaming content to be time-shifted.
摘要翻译：向用户提供了关于流媒体内容的各种功能。这样的功能包括一个或多个：独立于内容的编码比特率的速率的流媒体内容，即使当用户选择了各种穿梭控制选项（例如，暂停，停止，快进，寻找，倒带等），允许流媒体内容被记录以便稍后播放，并允许流内容被时移。

2. 发明授权

US07548948B2 Client-side caching of streaming media content 有权
标题翻译：流媒体内容的客户端缓存
公开(公告)号：US07548948B2
公开(公告)日：2009-06-16
申请号：US11267377
申请日：2005-11-04
申请人： Anders E. Klemets , Troy D. Batterberry , Eduardo P. Oliveira
发明人： Anders E. Klemets , Troy D. Batterberry , Eduardo P. Oliveira
IPC分类号： G06F15/16
CPC分类号： H04N21/6373 , H04N5/76 , H04N7/17336 , H04N21/23106 , H04N21/440281 , H04N21/47202
摘要： Various functionality with respect to streaming media content is made available to users. Such functionality includes one or more of: streaming media content at a rate independent of the encoded bit rate of the content, allowing streaming of content to continue even when the user has selected various shuttle control options (e.g., pause, stop, fast forward, seek, rewind, etc.), allowing streaming content to be recorded for playback at a later time, and allowing streaming content to be time-shifted.
摘要翻译：向用户提供了关于流媒体内容的各种功能。这样的功能包括一个或多个：独立于内容的编码比特率的速率的流媒体内容，即使当用户选择了各种穿梭控制选项（例如，暂停，停止，快进，寻找，倒带等），允许流媒体内容被记录以便稍后播放，并允许流内容被时移。

3. 发明授权

US07054774B2 Midstream determination of varying bandwidth availability 有权
公开(公告)号：US07054774B2
公开(公告)日：2006-05-30
申请号：US10609329
申请日：2003-06-27
申请人： Troy D. Batterberry , Alexandre V. Grigorovitch , Anders E. Klemets , James C. Stewart , Yejin Choi
发明人： Troy D. Batterberry , Alexandre V. Grigorovitch , Anders E. Klemets , James C. Stewart , Yejin Choi
IPC分类号： G06F15/00
CPC分类号： H04L65/4084 , H04L29/06027 , H04L65/80
摘要： Systems and methods for midstream determination of varying available bandwidth for streaming content between two network entities are described. During content streaming, a client requests a server to surge the content transmission rate. One or more bandwidth measurements are taken during the surge to determine if the increased transmission rate can be adequately managed. If the increased transmission rate can be adequately managed, the client may request the server to transmit remaining content at a transmission rate that is not greater than the increased, or surged, transmission rate. In a multi-bitrate file scenario, the surge rate may be higher than the rate of the fastest useable stream. In such a case, the fastest useable stream is selected. If the increased transmission rate is not suitable for future transmission, then the rate may remain at the original transmission rate.

4. 发明授权

US07634373B2 Midstream determination of varying bandwidth availability 有权
标题翻译：中游确定不同带宽可用性
公开(公告)号：US07634373B2
公开(公告)日：2009-12-15
申请号：US11277056
申请日：2006-03-21
申请人： Troy D. Batterberry , Alexandre V. Grigorovitch , Anders E. Klemets , James C. Stewart , Yejin Choi
发明人： Troy D. Batterberry , Alexandre V. Grigorovitch , Anders E. Klemets , James C. Stewart , Yejin Choi
IPC分类号： G06F15/16
CPC分类号： H04L65/4084 , H04L29/06027 , H04L65/80
摘要： Systems and methods for midstream determination of varying available bandwidth for streaming content between two network entities are described. During content streaming, a client requests a server to surge the content transmission rate. One or more bandwidth measurements are taken during the surge to determine if the increased transmission rate can be adequately managed. If the increased transmission rate can be adequately managed, the client may request the server to transmit remaining content at a transmission rate that is not greater than the increased, or surged, transmission rate. In a multi-bitrate file scenario, the surge rate may be higher than the rate of the fastest useable stream. In such a case, the fastest useable stream is selected. If the increased transmission rate is not suitable for future transmission, then the rate may remain at the original transmission rate.
摘要翻译：描述了用于中间流确定两个网络实体之间的流内容的可变带宽的系统和方法。在内容流传输期间，客户端请求服务器浪费内容传输速率。在浪涌期间进行一个或多个带宽测量，以确定是否可以充分地管理增加的传输速率。如果可以适当地管理增加的传输速率，则客户端可以请求服务器以不大于增加或激增的传输速率的传输速率发送剩余内容。在多比特率文件场景中，浪涌速率可能高于最快可用流的速率。在这种情况下，选择最快的可用流。如果增加的传输速率不适合将来传输，则速率可能保持在原始传输速率。

5. 发明授权

US08321690B2 Protecting digital media of various content types 有权
标题翻译：保护各种内容类型的数字媒体
公开(公告)号：US08321690B2
公开(公告)日：2012-11-27
申请号：US11201751
申请日：2005-08-11
申请人： Eduardo P. Oliveira , Anders E. Klemets , Sanjay Bhatt , Anand Paka , James M. Alkove
发明人： Eduardo P. Oliveira , Anders E. Klemets , Sanjay Bhatt , Anand Paka , James M. Alkove
IPC分类号： G06F12/14
CPC分类号： H04L63/10 , G06F21/10 , G06F2221/0784 , G06F2221/2145 , H04L9/0822 , H04L9/0825 , H04L63/0428 , H04L63/08 , H04L2209/603 , H04L2463/101 , H04N21/63345 , H04N21/64322 , H04N21/6437 , H04N21/8193 , H04N21/8355 , H04N21/8456
摘要： Systems and/or methods (“tools”) are described that enable a digital rights management policy to be associated with digital media having an arbitrary content type or transfer control protocol. In some embodiments, the tools encrypt data segments of a media file and add a descriptor to each of those segments. These descriptors can enable a receiver of the encrypted media file to decrypt the file and consume it according to the correct digital rights management policy.
摘要翻译：描述了能够使数字版权管理策略与具有任意内容类型或传输控制协议的数字媒体相关联的系统和/或方法（工具）。在一些实施例中，工具加密媒体文件的数据段并将描述符添加到这些段中的每一个。这些描述符可以使得加密的媒体文件的接收者能够根据正确的数字版权管理策略对文件进行解密并消费。

6. 发明授权

US07769880B2 Carrying protected content using a control protocol for streaming and a transport protocol 有权
标题翻译：使用用于流传输和传输协议的控制协议来承载受保护的内容
公开(公告)号：US07769880B2
公开(公告)日：2010-08-03
申请号：US11176058
申请日：2005-07-07
申请人： Anand Paka , Anders E. Klemets , Eduardo P. Oliveira , Sanjay Bhatt
发明人： Anand Paka , Anders E. Klemets , Eduardo P. Oliveira , Sanjay Bhatt
IPC分类号： G06F15/16 , H04N7/173 , H04N7/16 , G06F15/173
CPC分类号： H04L63/10 , G06F21/10 , H04L63/0428 , H04L65/4084 , H04L65/608 , H04L2463/101
摘要： Various embodiments utilize methods of protecting content, such as Digital Rights Management (DRM), to enable secure playback of content on machines and devices within a local network, such as a home media network. In at least some embodiments, messages and content are delivered using, respectively, a control protocol for streaming and a transport protocol. In at least some embodiments, the control protocol for streaming is Real Time Streaming Protocol (RTSP), and the transport protocol is Real Time Transport Protocol (RTP).
摘要翻译：各种实施例利用保护诸如数字版权管理（DRM）的内容的方法来实现本地网络（例如家庭媒体网络）内的机器和设备上的内容的安全回放。在至少一些实施例中，消息和内容分别使用用于流传输和传输协议的控制协议来传送。在至少一些实施例中，流控制协议是实时流协议（RTSP），传输协议是实时传输协议（RTP）。

7. 发明授权

US07720983B2 Fast startup for streaming media 有权
标题翻译：快速启动流媒体
公开(公告)号：US07720983B2
公开(公告)日：2010-05-18
申请号：US10838465
申请日：2004-05-03
申请人： Anders E. Klemets , Eduardo P. Oliveira , Sanjay Bhatt , Tong L. Wynn
发明人： Anders E. Klemets , Eduardo P. Oliveira , Sanjay Bhatt , Tong L. Wynn
IPC分类号： G06F15/16
CPC分类号： H04N21/6582 , H04L29/06027 , H04L65/608 , H04L65/80 , H04L69/16 , H04L69/163 , H04L69/164 , H04L69/165 , H04N21/23439 , H04N21/2385 , H04N21/266 , H04N21/4384 , H04N21/44209 , H04N21/643 , H04N21/64322 , H04N21/6587 , H04N21/8106 , H04N21/84
摘要： Fast startup for streaming media includes one or both of a technique for predictive start and a technique for switching delivery channel(s) during streaming. Predictive start allows a media content source to predict which media stream(s) are desired by the requesting client device and begin streaming those predicted media stream(s) to the client device. The delivery channel switching technique allows the media content source to begin streaming the media stream(s) using one delivery channel (e.g., using the Transmission Control Protocol (TCP)), and then check whether another delivery channel (e.g., using the User Datagram Protocol (UDP)) will work and switch to that other delivery channel if it will work.
摘要翻译：用于流媒体的快速启动包括用于预测启动的技术中的一种或两种，以及用于在流传输期间切换传送信道的技术。预测开始允许媒体内容源预测请求的客户端设备所期望的哪个媒体流，并开始将这些预测的媒体流传送到客户端设备。传送信道切换技术允许媒体内容源使用一个传送信道（例如，使用传输控制协议（TCP））开始流媒体流，然后检查另一传送信道（例如，使用用户数据报协议（UDP））将工作并切换到该另一个传送通道，如果它将工作。

8. 发明授权

US07586938B2 Methods and systems for self-describing multicasting of multimedia presentations 有权
标题翻译：用于自我描述多媒体演示的组播的方法和系统
公开(公告)号：US07586938B2
公开(公告)日：2009-09-08
申请号：US10693430
申请日：2003-10-24
申请人： Anders E. Klemets , Eduardo P. Oliveira , James M. Alkove
发明人： Anders E. Klemets , Eduardo P. Oliveira , James M. Alkove
IPC分类号： H04J3/16 , G06F15/16 , H04N7/173
CPC分类号： H04L65/4076 , H04L12/1895 , H04L29/06027 , H04L65/4015 , H04L65/607 , H04L65/608 , H04M7/006 , H04N21/23439 , H04N21/44004 , H04N21/6405 , H04N21/643 , H04N21/6437
摘要： Multimedia presentations are multicast using an announcement channel that includes presentation description information along with multiple channels for multiple streams of multimedia data to accommodate clients of different multimedia resources. Clients can use the announcement channel to select channel(s) appropriate for their multimedia resources. The channels are created in a predetermined manner (e.g., preselected logical addresses, preselected ports of an IP address, etc.) so that clients can immediately join a channel without (or concurrently with) joining the announcement channel to reduce startup latency. An acceleration channel may be created that provides blocks of data containing a preselected number of previous units, which may be transmitted at at a bit rate that is “faster than real-time”. This feature allows clients with suitable resources to more quickly buffer sufficient data to begin presenting the multimedia data to users.
摘要翻译：多媒体演示是使用包括演示描述信息以及多个多媒体数据流的多个频道的通知信道来组播的，以适应不同多媒体资源的客户端。客户可以使用通知通道选择适合其多媒体资源的频道。以预定方式（例如，预先选择的逻辑地址，IP地址的预选端口等）创建信道，使得客户端可以在不（或同时）加入通告信道的情况下立即加入信道以减少启动等待时间。可以创建加速度通道，其提供包含预选数量的先前单元的数据块，其可以以“比实时更快”的比特率发送。该功能允许具有适当资源的客户端更快速地缓冲足够的数据，以开始向用户呈现多媒体数据。

9. 发明授权

US07561696B2 Delivering policy updates for protected content 有权
标题翻译：为受保护的内容提供策略更新
公开(公告)号：US07561696B2
公开(公告)日：2009-07-14
申请号：US11179206
申请日：2005-07-12
申请人： Eduardo P. Oliveira , James M. Alkove , Anders E. Klemets
发明人： Eduardo P. Oliveira , James M. Alkove , Anders E. Klemets
IPC分类号： H04L9/00 , H04L9/08 , G06F7/04 , G06F17/30 , H04N7/16 , G06F11/30 , G06F12/14 , G06F21/00
CPC分类号： H04L9/0822 , G06F21/10 , H04L9/0825 , H04L63/06 , H04L63/102 , H04L2209/603 , H04L2463/062
摘要： Various embodiments permit policy updates, such as DRM policy updates, to be delivered and updated for a given piece of protected content. In at least some embodiments, various protocols can be extended to permit policy updates to be represented and carried by the protocol. In one embodiment, Hypertext Transport Protocol or HTTP is utilized to carry the policy updates. In another embodiment, Real Time Streaming Protocol or RTSP is used to carry policy updates.
摘要翻译：各种实施例允许针对给定的受保护内容片段进行策略更新（如DRM策略更新）被传递和更新。在至少一些实施例中，可以扩展各种协议以允许由协议来表示和携带策略更新。在一个实施例中，使用超文本传输协议或HTTP来承载策略更新。在另一实施例中，实时流协议或RTSP用于携带策略更新。

10. 发明授权

US07876896B2 RTP payload format 有权
标题翻译： RTP有效载荷格式
公开(公告)号：US07876896B2
公开(公告)日：2011-01-25
申请号：US12360099
申请日：2009-01-26
申请人： James M. Alkove , Anders E. Klemets
发明人： James M. Alkove , Anders E. Klemets
IPC分类号： H04K1/00 , G06F15/16
CPC分类号： H04L63/0457 , H04L29/06 , H04L29/06027 , H04L65/607 , H04L65/608 , H04L69/03 , H04N21/2347 , H04N21/2381 , H04N21/4143 , H04N21/42623 , H04N21/472 , H04N21/4788 , H04N21/6437
摘要： A data stream is encrypted to form encryption units that are packetized into RTP packets. Each RTP packet includes an RTP packet header, one or more payloads of a common data stream, and a RTP payload format header for each payload and including, for the corresponding encryption units, a boundary for the payload. The payload can be one or more of the encryption units or a fragment of one of the encryption units. The encryption units are reassembled the using the payloads in the RTP packets and the respective boundary in the respective RTP payload format header. The reassembled of encryption units are decrypted for rendering. Each RTP payload format header can have attributes for the corresponding payload that can be used to render the payload. The RTP packets can be sent server-to-client or peer-to-peer.
摘要翻译：数据流被加密以形成被打包成RTP分组的加密单元。每个RTP分组包括RTP分组报头，公共数据流的一个或多个有效载荷和用于每个有效载荷的RTP有效载荷格式报头，并且对于相应的加密单元，包括有效载荷的边界。有效载荷可以是一个或多个加密单元或加密单元之一的片段。使用RTP分组中的有效载荷和相应的RTP有效载荷格式报头中的相应边界重新组合加密单元。重新组合的加密单元被解密以进行渲染。每个RTP有效载荷格式头可以具有可用于渲染有效载荷的对应有效载荷的属性。 RTP数据包可以被发送到服务器到客户端或者点对点。

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