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1. 发明授权

US09014545B2 Adaptive streaming for digital content distribution 有权
标题翻译：数字内容分发的自适应流
公开(公告)号：US09014545B2
公开(公告)日：2015-04-21
申请号：US12509364
申请日：2009-07-24
申请人： Anthony Neal Park , Wei Wei
发明人： Anthony Neal Park , Wei Wei
IPC分类号： H04N5/91 , H04N21/439 , H04N7/173 , H04N21/2343 , H04N21/44 , H04N21/442 , H04N21/845 , H04N5/76
CPC分类号： H04N21/2223 , H04N5/76 , H04N7/173 , H04N21/23406 , H04N21/23439 , H04N21/2387 , H04N21/4392 , H04N21/44004 , H04N21/44209 , H04N21/462 , H04N21/6125 , H04N21/6379 , H04N21/8456
摘要： One embodiment of the present invention sets forth a technique for adapting playback bit rate to available delivery bandwidth in a content delivery system comprising a content server and a content player. A content player periodically estimates whether a given playback bit rate can feasibly provide complete playback for a given title assuming currently available bandwidth. If playback becomes unfeasible at a current bit rate assuming currently available bandwidth, then the content player adapts the bit rate downward until a feasible bit rate is achieved. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward.
摘要翻译：本发明的一个实施例提出了一种用于在包括内容服务器和内容播放器的内容传送系统中使播放比特率适应于可用传送带宽的技术。内容播放器周期性地估计给定的重放比特率是否可以为当前可用带宽的给定标题提供完整的播放。如果播放在当前可用带宽的当前比特率下变得不可行，则内容播放器将比特率向下适应，直到达到可行比特率。如果使用较高的比特率进行播放是可行的，则内容播放器可以向上调整比特率。

2. 发明授权

US08433814B2 Digital content distribution system and method 有权
标题翻译：数字内容分发系统及方法
公开(公告)号：US08433814B2
公开(公告)日：2013-04-30
申请号：US12504528
申请日：2009-07-16
申请人： Anthony Neal Park , Neil D. Hunt , Wei Wei
发明人： Anthony Neal Park , Neil D. Hunt , Wei Wei
IPC分类号： G06F15/173
CPC分类号： H04L67/06 , H04N21/238 , H04N21/4392 , H04N21/44004 , H04N21/44209 , H04N21/4425 , H04N21/4622 , H04N21/845 , H04N21/8586
摘要： One embodiment of the present invention sets forth a technique for selecting a content distribution network (CDN) comprising at least one content server, from a plurality of CDNs, and a playing digital content file from the CDN on a content player. Selecting the CDN is based on a rank order of CDNs, an assigned weight value for each CDN, and a bandwidth measured between the content player and each CDN. Advantageously, a given content player may select a CDN based on prevailing network and CDN loading conditions, thereby increasing overall robustness and reliability when downloading digital content file from a CDN.
摘要翻译：本发明的一个实施例提出了一种用于从多个CDN中选择包括至少一个内容服务器的内容分发网络（CDN）和来自内容播放器上的CDN的播放数字内容文件的技术。选择CDN是基于CDN的排序顺序，每个CDN的分配权重值以及在内容播放器和每个CDN之间测得的带宽。有利地，给定的内容播放器可以基于当前的网络和CDN加载条件来选择CDN，从而在从CDN下载数字内容文件时增加总体鲁棒性和可靠性。

3. 发明授权

US08631455B2 Adaptive streaming for digital content distribution 有权
标题翻译：数字内容分发的自适应流
公开(公告)号：US08631455B2
公开(公告)日：2014-01-14
申请号：US12509365
申请日：2009-07-24
申请人： Anthony Neal Park , Wei Wei
发明人： Anthony Neal Park , Wei Wei
IPC分类号： H04N7/173
CPC分类号： H04N21/44004 , H04N21/44209 , H04N21/6175 , H04N21/6373
摘要： One embodiment of the present invention sets forth a technique for adapting playback bit rate to available delivery bandwidth in a content delivery system comprising a content server and a content player. A content player periodically estimates whether a given playback bit rate can feasibly provide complete playback for a given title assuming currently available bandwidth. If playback becomes unfeasible at a current bit rate assuming currently available bandwidth, then the content player adapts the bit rate downward until a feasible bit rate is achieved. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward.
摘要翻译：本发明的一个实施例提出了一种用于在包括内容服务器和内容播放器的内容传送系统中使播放比特率适应于可用传送带宽的技术。内容播放器周期性地估计给定的重放比特率是否可以为当前可用带宽的给定标题提供完整的播放。如果播放在当前可用带宽的当前比特率下变得不可行，则内容播放器将比特率向下适应，直到达到可行比特率。如果使用较高的比特率进行播放是可行的，则内容播放器可以向上调整比特率。

4. 发明申请

US20110016225A1 DIGITAL CONTENT DISTRIBUTION SYSTEM AND METHOD 有权
标题翻译：数字内容分发系统及方法
公开(公告)号：US20110016225A1
公开(公告)日：2011-01-20
申请号：US12504528
申请日：2009-07-16
申请人： Anthony Neal Park , Neil D. Hunt , Wei Wei
发明人： Anthony Neal Park , Neil D. Hunt , Wei Wei
IPC分类号： G06F15/16
CPC分类号： H04L67/06 , H04N21/238 , H04N21/4392 , H04N21/44004 , H04N21/44209 , H04N21/4425 , H04N21/4622 , H04N21/845 , H04N21/8586
摘要： One embodiment of the present invention sets forth a technique for selecting a content distribution network (CDN) comprising at least one content server, from a plurality of CDNs, and a playing digital content file from the CDN on a content player. Selecting the CDN is based on a rank order of CDNs, an assigned weight value for each CDN, and a bandwidth measured between the content player and each CDN. Advantageously, a given content player may select a CDN based on prevailing network and CDN loading conditions, thereby increasing overall robustness and reliability when downloading digital content file from a CDN.
摘要翻译：本发明的一个实施例提出了一种用于从多个CDN中选择包括至少一个内容服务器的内容分发网络（CDN）和来自内容播放器上的CDN的播放数字内容文件的技术。选择CDN是基于CDN的排序顺序，每个CDN的分配权重值以及在内容播放器和每个CDN之间测得的带宽。有利地，给定的内容播放器可以基于当前的网络和CDN加载条件来选择CDN，从而在从CDN下载数字内容文件时增加总体鲁棒性和可靠性。

5. 发明授权

US08532290B2 Content playback APIS using encrypted streams 有权
标题翻译：使用加密流播放APIS的内容
公开(公告)号：US08532290B2
公开(公告)日：2013-09-10
申请号：US13041303
申请日：2011-03-04
申请人： James Mitch Zollinger , Yung-Hsiao Lai , Anthony Neal Park , David Randall Ronca , Scott Gregory Kelly
发明人： James Mitch Zollinger , Yung-Hsiao Lai , Anthony Neal Park , David Randall Ronca , Scott Gregory Kelly
IPC分类号： H04L29/06
CPC分类号： G06F21/10
摘要： One embodiment of the present invention sets forth a technique for decrypting digital content in a secure environment. The technique includes the steps of receiving a digital rights management (DRM) license associated with a first frame of encrypted data from a DRM server, where the DRM license includes a decryption key for decrypting the first frame of encrypted data, transmitting the DRM license to a secure content playback pipeline for storage, and transmitting the first frame of encrypted data to the secure content playback pipeline for decryption, where, in response to receiving the first frame of encrypted data, a trusted processing entity within the secure content playback pipeline decrypts the first frame of encrypted data based on the decryption key included in the DRM license to generate a first set of decrypted data and store the first set of decrypted data in a secure memory space.
摘要翻译：本发明的一个实施例提出了一种在安全环境中解密数字内容的技术。该技术包括以下步骤：从DRM服务器接收与加密数据的第一帧相关联的数字版权管理（DRM）许可证，其中DRM许可证包括用于解密加密数据的第一帧的解密密钥，将DRM许可证发送到用于存储的安全内容回放流水线，以及将加密数据的第一帧发送到用于解密的安全内容回放流水线，其中响应于接收到加密数据的第一帧，安全内容回放流水线内的可信处理实体解密基于包括在DRM许可证中的解密密钥的加密数据的第一帧，以生成第一组解密数据，并将第一组解密数据存储在安全存储器空间中。

6. 发明授权

US10108788B2 Fast-expiring licenses used to speculatively authorize access to streaming media content 有权
公开(公告)号：US10108788B2
公开(公告)日：2018-10-23
申请号：US14023447
申请日：2013-09-10
申请人： Mark Watson , Anthony Neal Park , Mitch Zollinger
发明人： Mark Watson , Anthony Neal Park , Mitch Zollinger
IPC分类号： G06F21/10 , H04N21/4405 , H04N21/466 , H04N21/482 , H04N21/6334 , H04N21/8355 , H04N21/84
摘要： Techniques are disclosed for improving user experience of multimedia streaming over computer networks. More specifically, techniques presented herein reduce (or eliminate) latency in playback start time for streaming digital media content resulting from digital rights management (DRM) authorizations. A streaming media client (e.g., a browser, set-top box, mobile telephone or tablet “app”) may request a “fast-expiring” license for titles the streaming media client predicts a user is likely to begin streaming. A fast-expiring license is a DRM license (and associated decryption key) which is valid for only a very limited time after being used for playback. During the validity period of such a license, the client device requests a “normal” or “regular” license to continue accessing the title after the fast-expiring license expires.

7. 发明授权

US08355433B2 Encoding video streams for adaptive video streaming 有权
标题翻译：编码用于自适应视频流的视频流
公开(公告)号：US08355433B2
公开(公告)日：2013-01-15
申请号：US12543328
申请日：2009-08-18
申请人： Anthony Neal Park , Yung-Hsiao Lai , David Randall Ronca
发明人： Anthony Neal Park , Yung-Hsiao Lai , David Randall Ronca
IPC分类号： H04N7/12 , H04L12/66
CPC分类号： H04N21/23439 , H04N21/23611 , H04N21/2362 , H04N21/238 , H04N21/2389 , H04N21/23895
摘要： One embodiment of the invention sets forth an encoding server including components configured to encode a video stream associated with a content title for adaptive streaming. The video stream is first processed by a VC1 encoder to generate an encoded video stream comprising a multiple GOPs, each GOP including a key frame and having a different playback offset. The encoded video stream is then packaged such that the GOPs are stored in data packets of the packaged encoded stream. An SHI generator generates an SHI associated with the packaged encoded stream that includes a switch point associated with each GOP. Each switch point includes the playback offset associated with the corresponding GOP and the data packet storing the key frame of the corresponding GOP. The SHI associated with multiple packaged encoded video streams associated with the same content title and encoded to different playback bit rates have corresponding switch points.
摘要翻译：本发明的一个实施例提出了一种编码服务器，其包括被配置为编码与用于自适应流传输的内容标题相关联的视频流的组件。视频流首先由VC1编码器处理，以产生包括多个GOP的编码视频流，每个GOP包括关键帧并且具有不同的重放偏移。然后将编码的视频流打包，使得GOP被存储在打包编码的流的数据分组中。 SHI生成器生成与打包编码流相关联的SHI，其包括与每个GOP相关联的切换点。每个切换点包括与相应GOP相关联的重放偏移和存储对应GOP的关键帧的数据分组。与与相同内容标题相关联并被编码为不同播放比特率的多个打包编码视频流相关联的SHI具有对应的切换点。

8. 发明申请

US20150074818A1 FAST-EXPIRING LICENSES USED TO SPECULATIVELY AUTHORIZE ACCESS TO STREAMING MEDIA CONTENT 审中-公开
标题翻译：用于特别授权访问流媒体内容的快速使用许可
公开(公告)号：US20150074818A1
公开(公告)日：2015-03-12
申请号：US14023447
申请日：2013-09-10
申请人： Mark Watson , Anthony Neal Park , Mitch Zollinger
发明人： Mark Watson , Anthony Neal Park , Mitch Zollinger
IPC分类号： G06F21/10
CPC分类号： G06F21/105 , H04N21/4405 , H04N21/4668 , H04N21/4826 , H04N21/6334 , H04N21/8355 , H04N21/84
摘要： Techniques are disclosed for improving user experience of multimedia streaming over computer networks. More specifically, techniques presented herein reduce (or eliminate) latency in playback start time for streaming digital media content resulting from digital rights management (DRM) authorizations. A streaming media client (e.g., a browser, set-top box, mobile telephone or tablet “app”) may request a “fast-expiring” license for titles the streaming media client predicts a user is likely to begin streaming. A fast-expiring license is a DRM license (and associated decryption key) which is valid for only a very limited time after being used for playback. During the validity period of such a license, the client device requests a “normal” or “regular” license to continue accessing the title after the fast-expiring license expires.
摘要翻译：公开了用于改善计算机网络上的多媒体流的用户体验的技术。更具体地，本文提出的技术减少（或消除）由数字版权管理（DRM）授权导致的用于流式传输数字媒体内容的播放开始时间的延迟。流媒体客户端（例如，浏览器，机顶盒，移动电话或平板电脑“应用”）可以请求流媒体客户端预测用户可能开始流式传输的标题的“快速到期”许可。快速到期的许可证是DRM许可证（和相关的解密密钥），其仅在用于播放之后的非常有限的时间内有效。在这种许可证的有效期内，客户端设备在快速到期许可证到期后请求“正常”或“常规”许可证继续访问该标题。

9. 发明申请

US20120226915A1 Content Playback APIS Using Encrypted Streams 有权
标题翻译：内容播放APIS使用加密流
公开(公告)号：US20120226915A1
公开(公告)日：2012-09-06
申请号：US13041303
申请日：2011-03-04
申请人： James Mitch ZOLLINGER , Yung-Hsiao Lai , Anthony Neal Park , David Randall Ronca , Scott Gregory Kelly
发明人： James Mitch ZOLLINGER , Yung-Hsiao Lai , Anthony Neal Park , David Randall Ronca , Scott Gregory Kelly
IPC分类号： G06F12/14
CPC分类号： G06F21/10
摘要： One embodiment of the present invention sets forth a technique for decrypting digital content in a secure environment. The technique includes the steps of receiving a digital rights management (DRM) license associated with a first frame of encrypted data from a DRM server, where the DRM license includes a decryption key for decrypting the first frame of encrypted data, transmitting the DRM license to a secure content playback pipeline for storage, and transmitting the first frame of encrypted data to the secure content playback pipeline for decryption, where, in response to receiving the first frame of encrypted data, a trusted processing entity within the secure content playback pipeline decrypts the first frame of encrypted data based on the decryption key included in the DRM license to generate a first set of decrypted data and store the first set of decrypted data in a secure memory space.
摘要翻译：本发明的一个实施例提出了一种在安全环境中解密数字内容的技术。该技术包括以下步骤：从DRM服务器接收与加密数据的第一帧相关联的数字版权管理（DRM）许可证，其中DRM许可证包括用于解密加密数据的第一帧的解密密钥，将DRM许可证发送到用于存储的安全内容回放流水线，以及将加密数据的第一帧发送到用于解密的安全内容回放流水线，其中响应于接收到加密数据的第一帧，安全内容回放流水线内的可信处理实体解密基于包括在DRM许可证中的解密密钥的加密数据的第一帧，以生成第一组解密数据，并将第一组解密数据存储在安全存储器空间中。

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