公开(公告)号：US20060165088A1

公开(公告)日：2006-07-27

申请号：US11388833

申请日：2006-03-23

申请人： Peter Monta ,  Edward Krause ,  Adam Tom

发明人： Peter Monta ,  Edward Krause ,  Adam Tom

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04N21/42607 ,  H04N19/40 ,  H04N19/42 ,  H04N19/423 ,  H04N19/436 ,  H04N19/61 ,  H04N21/23406 ,  H04N21/23424 ,  H04N21/262 ,  H04N21/26208 ,  H04N21/44016

摘要： The present invention relates generally to the processing of multiple data streams with common resources. More particularly, this invention relates to a technique for time-multiplexed processing o, for example, multiple digital video programs. In one embodiment, an exemplary method provides for time-multiplexed processing of a set of digital streams includes storing each received packet in a random access memory. For each stream, the deadline for the arrival of the next packet at the receiver is determined and a priority based on the deadline is assigned. The stream with the highest assigned priority is identified as an identified stream. In some embodiments, the processing state of the identified stream is then restored. One or more packets of data corresponding to the identified stream are retrieved from random access memory to produce retrieved packets. The processing state is saved after the retrieved packets have been processed.

摘要翻译： 本发明一般涉及具有共同资源的多个数据流的处理。 更具体地，本发明涉及用于时间复用处理的技术，例如多个数字视频节目。 在一个实施例中，示例性方法提供一组数字流的时间复用处理，包括将每个接收的分组存储在随机存取存储器中。 对于每个流，确定下一个分组在接收机处到达的截止日期，并且分配基于截止日期的优先级。 具有最高分配优先级的流被标识为识别的流。 在一些实施例中，然后恢复所识别的流的处理状态。 从所述随机存取存储器检索对应于所识别的流的一个或多个数据包，以产生检索到的数据包。 处理状态在检索到的数据包处理完毕后保存。

公开(公告)号：US06996129B2

公开(公告)日：2006-02-07

申请号：US11123559

申请日：2005-05-06

申请人： Edward A. Krause ,  Peter Monta ,  Adam Tom

发明人： Edward A. Krause ,  Peter Monta ,  Adam Tom

IPC分类号： H04H10/04

CPC分类号： H04L29/06027 ,  H04L63/0428 ,  H04L65/4076 ,  H04L65/605 ,  H04L65/80 ,  H04N7/1675 ,  H04N7/17318 ,  H04N7/17336 ,  H04N19/146 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N21/2225 ,  H04N21/23103 ,  H04N21/23424 ,  H04N21/2347 ,  H04N21/23608 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/2383 ,  H04N21/2385 ,  H04N21/2405 ,  H04N21/26216 ,  H04N21/26606 ,  H04N21/26613 ,  H04N21/4344 ,  H04N21/4347 ,  H04N21/44016 ,  H04N21/47202 ,  H04N21/6118 ,  H04N21/63345 ,  H04N21/812

摘要： An advanced multiplexer designed and optimized for next generation on-demand video distribution is described. Features and capabilities include auto-discovery, channel-staggering and compatibility with static Virtual Channel Tables (VCTs). The multiplexer system facilitates auto-discovery by inserting identifiers into MPTSs (Multi-Program Transport Streams). These identifiers are echoed back to the multiplexer by the client set-top thereby indicating correspondence between modulators, service groups, and clients. When modulating multiple channels, FEC frames (Forward Error Correction frames) are staggered across channels to reduce correlation and clipping in the IFFT processor.

摘要翻译： 描述了为下一代点播视频分发设计和优化的高级多路复用器。 功能和功能包括自动发现，频道交错和与静态虚拟频道表（VCT）的兼容性。 多路复用器系统通过将标识符插入到MPTS（多节目传输流）中来促进自动发现。 这些标识符由客户机机顶盒回送给多路复用器，从而指示调制器，服务组和客户机之间的对应关系。 当调制多个通道时，FEC帧（前向纠错帧）跨通道交错，以减少IFFT处理器中的相关和削波。

公开(公告)号：US20130332971A1

公开(公告)日：2013-12-12

申请号：US13826421

申请日：2013-03-14

申请人： RGB NETWORKS, INC.

发明人： Yuval Fisher

IPC分类号： H04N21/266

CPC分类号： H04N21/266 ,  H04L65/4084 ,  H04L65/605 ,  H04N21/2343 ,  H04N21/23655 ,  H04N21/2387 ,  H04N21/2393 ,  H04N21/26258 ,  H04N21/2662 ,  H04N21/6125 ,  H04N21/64322 ,  H04N21/8456 ,  H04N21/8586

摘要： Methods and apparatus are provided for combining assets for a streaming video signal. Video assets are provided in an adaptive bit rate format. The video assets may comprise fragments of various types of video content. A stitched manifest identifying a combination of the video assets is created in response to a client request for one or more of the video assets. The stitched manifest is provided to a client and used by the client to request the combination of video assets for playback as one continuous video stream in an order specified by the stitched manifest.

摘要翻译： 提供了用于组合用于流视频信号的资产的方法和装置。 以自适应比特率格式提供视频资产。 视频资产可以包括各种类型的视频内容的片段。 响应于对一个或多个视频资产的客户端请求，创建识别视频资产的组合的拼接清单。 缝合的清单被提供给客户端，并且被客户端用于按照由缝合清单指定的顺序将视频资产的组合请求作为一个连续的视频流进行回放。

公开(公告)号：US20130044803A1

公开(公告)日：2013-02-21

申请号：US13209490

申请日：2011-08-15

申请人： Yuval Fisher ,  Hain-Ching Liu ,  Dan R. Hunt ,  Shankar Venkataraman ,  Hsiang-Yun Alex Huang

发明人： Yuval Fisher ,  Hain-Ching Liu ,  Dan R. Hunt ,  Shankar Venkataraman ,  Hsiang-Yun Alex Huang

IPC分类号： H04N7/40 ,  G06F15/16

CPC分类号： H04N21/2343 ,  H04N21/2402 ,  H04N21/242 ,  H04N21/6125 ,  H04N21/8455 ,  H04N21/8456

摘要： A video stream is transcoded to provide a plurality of primary profiles. Individual frames of the video stream have a Presentation Time Stamp (PTS). A PTS is used as a token to identify particular frames to be encoded as Instantaneous Decoder Refresh (IDR) frames in each profile. An IDR frame period is determined, indicative of a desired number of video frames between two IDR frames. An IDR frame is inserted into each profile every IDR frame period. The IDR frames of each profile are aligned with the same IDR frames of the other profiles. The PTS of each IDR frame in each profile is monitored. Upon determining that a PTS is out of alignment, the next PTS of the affected profile is aligned with the corresponding PTS of remaining profiles. Backup transcoders produce backup profiles that are maintained in alignment with each other and with the primary profiles.

摘要翻译： 视频流被转码以提供多个主要简档。 视频流的各个帧具有呈现时间戳（PTS）。 使用PTS作为令牌来识别要编码为每个配置文件中的瞬时解码器刷新（IDR）帧的特定帧。 确定IDR帧周期，表示两个IDR帧之间的期望数量的视频帧。 每个IDR帧周期将IDR帧插入每个配置文件。 每个配置文件的IDR帧与其他配置文件的相同IDR帧对齐。 监视每个配置文件中每个IDR帧的PTS。 在确定PTS不对齐时，受影响配置文件的下一个PTS与剩余配置文件的相应PTS对齐。 备份代码转换器产生保持彼此对齐和与主配置文件对齐的备份配置文件。

公开(公告)号：US20120321010A1

公开(公告)日：2012-12-20

申请号：US13164029

申请日：2011-06-20

申请人： Kennan Laudel

发明人： Kennan Laudel

IPC分类号： H04B7/02

CPC分类号： H04H20/78 ,  H04L27/36

摘要： A full spectrum modulator processes a plurality of CATV channels from separate paths. Each path has (i) a first filter for pulse shaping an input channel signal and upsampling a channel frequency thereof, (ii) an interpolator for interpolating the output of the first filter to a common sample rate, and (iii) a decimator for centering the output of the interpolator on a predetermined channel bandwidth. An IDFT processor receives channel signal outputs from the decimators. A polyphase filter bank receives IDFT processed parallel channel signals from the IDFT processor. A commutator converts the processed parallel channel signals from the polyphase filter bank to a single stream of data. A second filter upsamples the single stream of data to a fixed output sampling rate and low pass filters alias signals therefrom. Both standard and harmonically related carrier CATV channel frequency plans are accommodated.

摘要翻译： 全频谱调制器从分离的路径处理多个CATV信道。 每个路径具有（i）用于对输入通道信号进行脉冲整形并对其通道频率进行上采样的第一滤波器，（ii）用于将第一滤波器的输出内插到公共采样率的内插器，以及（iii）用于对中的抽取器 内插器在预定信道带宽上的输出。 IDFT处理器从抽取器接收信道信号输出。 多相滤波器组从IDFT处理器接收IDFT处理的并行信道信号。 换向器将来自多相滤波器组的经处理的并行信道信号转换成单个数据流。 第二滤波器将单个数据流上采样到固定的输出采样率，并从其中低通滤波器别名信号。 标准和谐波相关的载波CATV信道频率计划都适用。

公开(公告)号：US20110126248A1

公开(公告)日：2011-05-26

申请号：US12949957

申请日：2010-11-19

申请人： Yuval Fisher ,  Adam S. Tom

发明人： Yuval Fisher ,  Adam S. Tom

IPC分类号： H04N7/173

CPC分类号： H04N21/47202 ,  H04N7/17318 ,  H04N21/2365 ,  H04N21/26216 ,  H04N21/2662 ,  H04N21/4347

摘要： Methods and apparatus for delivering video programs are provided. A plurality of video programs are provided in a fragmented, adaptive bit rate format. A request for a respective video program from the plurality of video programs is received from each of a plurality of clients. The requested video programs are multiplexed for delivery to the clients in a multiplex over a shared, fixed-bit-rate transmission channel. The requests may be for the same or different video programs. The requests for the video programs may occur at the same or at different times. In the fragmented, adaptive bit rate format, the fragment delivered to the client may not be the same as the requested fragment and is dependent on multiple criteria, including the bitrate and quality of the requested and delivered fragments, the total available delivery bandwidth, and other fragment requests made on the channel. The resulting multiplex may be either a constant bit rate multiplex or a variable bit rate multiplex.

摘要翻译： 提供了提供视频节目的方法和装置。 以分段的自适应比特率格式提供多个视频节目。 从多个客户端中的每一个接收来自多个视频节目的相应视频节目的请求。 所请求的视频节目被多路复用以通过共享的固定比特率传输信道以多路传送方式传送给客户端。 请求可能是相同或不同的视频节目。 视频节目的请求可以在相同或不同的时间发生。 在分段的自适应比特率格式中，递送到客户端的片段可能与所请求的片段不一致，并且取决于多个标准，包括所请求和传递片段的比特率和质量，总可用传送带宽和 在频道上发出的其他片段请求。 所得到的多路复用可以是恒定比特率复用或可变比特率复用。

公开(公告)号：US20100333149A1

公开(公告)日：2010-12-30

申请号：US12814843

申请日：2010-06-14

申请人： Anesh Sharma ,  Yue Wang

发明人： Anesh Sharma ,  Yue Wang

IPC分类号： H04N7/173

CPC分类号： H04N7/17318 ,  H04N21/2343 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/242 ,  H04N21/4347 ,  H04N21/47202 ,  H04N21/64784

摘要： Methods and apparatus are provided for delivering a plurality of video on demand (VOD) streams to customers. Video streams are received from a VOD server. The received streams are statistically multiplexed to transrate them and to optimize their video bandwidth. The statistically multiplexed streams are modulated, and then delivered to customers as single program transport streams.

摘要翻译： 提供了用于将多个视频点播（VOD）流传送给客户的方法和装置。 从VOD服务器接收视频流。 接收的数据流被统一复用以便转换它们并优化其视频带宽。 统计复用的流被调制，然后作为单个节目传输流传送给客户。

公开(公告)号：US07852854B2

公开(公告)日：2010-12-14

申请号：US11388833

申请日：2006-03-23

申请人： Peter Monta ,  Edward A. Krause ,  Adam Tom

发明人： Peter Monta ,  Edward A. Krause ,  Adam Tom

IPC分类号： H04L12/56

CPC分类号： H04N21/42607 ,  H04N19/40 ,  H04N19/42 ,  H04N19/423 ,  H04N19/436 ,  H04N19/61 ,  H04N21/23406 ,  H04N21/23424 ,  H04N21/262 ,  H04N21/26208 ,  H04N21/44016

摘要： The present invention relates generally to the processing of multiple data streams with common resources. More particularly, this invention relates to a technique for time-multiplexed processing of, for example, multiple digital video programs. In one embodiment, an exemplary method provides for time-multiplexed processing of a set of digital streams includes storing each received packet in a random access memory. For each stream, the deadline for the arrival of the next packet at the receiver is determined and a priority based on the deadline is assigned. The stream with the highest assigned priority is identified as an identified stream. In some embodiments, the processing state of the identified stream is then restored. One or more packets of data corresponding to the identified stream are retrieved from random access memory to produce retrieved packets. The processing state is saved after the retrieved packets have been processed.

摘要翻译： 本发明一般涉及具有共同资源的多个数据流的处理。 更具体地，本发明涉及例如多个数字视频节目的时分复用处理技术。 在一个实施例中，示例性方法提供一组数字流的时间复用处理，包括将每个接收的分组存储在随机存取存储器中。 对于每个流，确定下一个分组在接收机处到达的截止日期，并且分配基于截止日期的优先级。 具有最高分配优先级的流被标识为识别的流。 在一些实施例中，然后恢复所识别的流的处理状态。 从所述随机存取存储器检索对应于所识别的流的一个或多个数据包，以产生检索到的数据包。 处理状态在检索到的数据包处理完毕后保存。

公开(公告)号：US07804856B2

公开(公告)日：2010-09-28

申请号：US11123677

申请日：2005-05-06

申请人： Edward A. Krause ,  Peter Monta ,  Adam Tom

发明人： Edward A. Krause ,  Peter Monta ,  Adam Tom

IPC分类号： H04H20/28 ,  H04J3/02

CPC分类号： H04L29/06027 ,  H04L63/0428 ,  H04L65/4076 ,  H04L65/605 ,  H04L65/80 ,  H04N7/1675 ,  H04N7/17318 ,  H04N7/17336 ,  H04N19/146 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N21/2225 ,  H04N21/23103 ,  H04N21/23424 ,  H04N21/2347 ,  H04N21/23608 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/2383 ,  H04N21/2385 ,  H04N21/2405 ,  H04N21/26216 ,  H04N21/26606 ,  H04N21/26613 ,  H04N21/4344 ,  H04N21/4347 ,  H04N21/44016 ,  H04N21/47202 ,  H04N21/6118 ,  H04N21/63345 ,  H04N21/812

摘要： An advanced video multiplexer system designed and optimized for next generation on-demand video distribution is described. The system optimizes identifies a multi-program transport stream best able to accommodate new seesions based upon Quality of Service (QoS) and QAM utilization ratios. MPTS channels are rebalanced via re-grouping and transrating as necessary to optimize bandwidth utilization. Multiple video formats are supported via built-in transcoding. The multiplexer manages encryption resources and supports new sessions using previously allocated encryption resources where possible. Sessions can be grouped into encryption channels either by using a single authorization tier per channel policy, or by requiring all clients of the group to be in physically separated service groups. Encryption channels can be released when a channel no longer serves any clients or when one or more other channels that have been assigned the same entitlement can accommodate any remaining clients.

摘要翻译： 描述了针对下一代按需视频分发设计和优化的高级视频多路复用器系统。 该系统优化识别出最佳能够根据服务质量（QoS）和QAM利用率来适应新视角的多节目传输流。 MPTS通道可以根据需要通过重新分组和转换进行重新平衡，以优化带宽利用率。 通过内置转码支持多种视频格式。 多路复用器管理加密资源，并在可能的情况下使用先前分配的加密资源支持新会话。 会话可以通过使用每个渠道策略的单个授权层，或者要求组中的所有客户端在物理上分离的服务组中，将其分组到加密通道中。 当通道不再为任何客户端服务时，或者一个或多个其他被分配了相同授权的渠道可以容纳任何剩余的客户端时，可以释放加密通道。

公开(公告)号：US20080072267A1

公开(公告)日：2008-03-20

申请号：US11881209

申请日：2007-07-25

申请人： Peter Monta ,  Edward A. Krause

发明人： Peter Monta ,  Edward A. Krause

IPC分类号： H04N7/173

CPC分类号： H04N19/12 ,  H04N19/124 ,  H04N19/159 ,  H04N19/40 ,  H04N21/4344 ,  H04N21/440254

摘要： Methods, apparatus, and systems for modifying the data rate of a video signal are provided. A compressed video signal is received. A closed-loop transrating path for modifying a data rate of the video signal and an open-loop transrating path for modifying the data rate of the video signal are provided. One of the open-loop transrating path or the closed-loop transrating path is selected for modifying the data rate of at least a portion of the video signal. Pixel quantization error control may be provided in the closed loop transrating path.

摘要翻译： 提供了用于修改视频信号的数据速率的方法，装置和系统。 接收压缩视频信号。 提供了一种用于修改视频信号的数据速率和用于修改视频信号的数据速率的开环转换路径的闭环转换路径。 选择开环转移路径或闭环转移路径中的一个来修改视频信号的至少一部分的数据速率。 可以在闭环转移路径中提供像素量化误差控制。