公开(公告)号：US07644425B2

公开(公告)日：2010-01-05

申请号：US11385735

申请日：2006-03-22

申请人： Alistair John Parker ,  Jeff Furlong ,  Gino Louis Dion ,  Sean Gordon Higgins ,  David Cecil Robinson

发明人： Alistair John Parker ,  Jeff Furlong ,  Gino Louis Dion ,  Sean Gordon Higgins ,  David Cecil Robinson

IPC分类号： G06F13/00 ,  G06F3/00 ,  H04N5/445

CPC分类号： H04N7/163 ,  H04N5/45 ,  H04N21/23418 ,  H04N21/23424 ,  H04N21/234336 ,  H04N21/4316 ,  H04N21/44016 ,  H04N21/8153 ,  H04N21/8549

摘要： The PIP system enables display of a mosaic of favorite channels in a Picture-in-Picture (PIP) format to a subscriber terminal. Picture-in-Picture support is efficiently provided by sending only I-Frames of the secondary video channel to the end-user. That is, any unnecessary packets (null, B-P frames, audio, etc.) in the secondary video channel are stripped away. This method uses very little bandwidth and is STB agnostic.

摘要翻译： PIP系统使得能够以画中画（PIP）格式将收藏频道的马赛克显示给用户终端。 通过仅向最终用户发送次要视频频道的I帧，可以有效地提供画中画支持。 也就是说，副视频通道中的任何不必要的分组（空，B-P帧，音频等）被剥离。 该方法使用的带宽非常小，并且STB不可知。

公开(公告)号：US07668914B2

公开(公告)日：2010-02-23

申请号：US11090308

申请日：2005-03-28

申请人： Alistair John Parker ,  Jeff Furlong ,  Gino Louis Dion ,  Sean Gordon Higgins ,  Richard Bettelheim ,  Christian Van Boven

发明人： Alistair John Parker ,  Jeff Furlong ,  Gino Louis Dion ,  Sean Gordon Higgins ,  Richard Bettelheim ,  Christian Van Boven

IPC分类号： G06F15/16 ,  G06F15/173 ,  G06F3/00 ,  H04N7/167 ,  H04N7/10 ,  H04N7/12 ,  H04L12/20 ,  H04H20/71 ,  H04J3/18

CPC分类号： H04N21/6581 ,  H04N7/17318 ,  H04N21/23406 ,  H04N21/2362 ,  H04N21/4384 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/8455

摘要： A server at the edge of a broadband network distributes multimedia content streams to clients, while ensuring that the first data delivered to each client is key data (milestones) needed for correctly decoding the stream content. This is obtained by buffering the packets in the incoming stream and transmitting the packets from the buffer in an outgoing stream, starting with the most recent milestone placed in the buffer before a request to join the respective incoming stream is received. As the writing to and reading from the buffer are performed at different rates, the incoming and outgoing streams are eventually synchronized, at which point the client may be switched to receive the incoming stream directly.

摘要翻译： 宽带网络边缘的服务器将多媒体内容流分发到客户端，同时确保传送给每个客户端的第一个数据是正确解码流内容所需的关键数据（里程碑）。 这是通过缓冲输入流中的数据包，并从输出流中的缓冲区中传送数据包，从接收到相应输入流的请求之前的缓冲区中最新的里程碑开始。 当以不同的速率执行对缓冲器的写入和读取时，输入和输出流最终被同步，在这一点上，客户端可以被直接切换以接收输入流。

公开(公告)号：US07643508B2

公开(公告)日：2010-01-05

申请号：US11264132

申请日：2005-11-02

申请人： Jeff Furlong ,  Alistair John Parker ,  Sean Gordon Higgins ,  Gino Louis Dion

发明人： Jeff Furlong ,  Alistair John Parker ,  Sean Gordon Higgins ,  Gino Louis Dion

IPC分类号： H04J3/16

CPC分类号： H04L65/4076 ,  H04L65/4084 ,  H04L65/607 ,  H04L65/80 ,  H04N21/4344 ,  H04N21/4384

摘要： In a system that provides decoding of A/V streams, this invention reduces switching delays between different streams by modifying the Program Identification (PID) values of the Audio and Video data to respective PID values that are already known by the decoder. This technique allows the decoder to stay in a run state when switching between A/V streams, thereby reducing channel change times.

摘要翻译： 在提供A / V流解码的系统中，本发明通过将音频和视频数据的节目识别（PID）值修改为解码器已知的相应PID值来减少不同流之间的切换延迟。 这种技术允许解码器在A / V流之间切换时保持在运行状态，从而减少信道改变时间。

公开(公告)号：US07263610B2

公开(公告)日：2007-08-28

申请号：US10208562

申请日：2002-07-30

申请人： Alistair John Parker ,  Gino Louis Dion ,  Sean Gordon Higgins

发明人： Alistair John Parker ,  Gino Louis Dion ,  Sean Gordon Higgins

IPC分类号： H04L9/00 ,  H04L9/32

CPC分类号： H04N21/2541 ,  H04N7/17318 ,  H04N21/25816 ,  H04N21/6125 ,  H04N21/6175 ,  H04N21/6334 ,  H04N21/6405

摘要： Methods, devices and systems for providing content providers with a secure way to multicast their data flows only to legitimate end users. By making a specific decision for each potentially legitimate end user requesting a specific data flow, differing subscriber profiles may be taken into account. Furthermore, end to end encryption is avoided by having a switch and/or router control the specific data flow to a specific end user. Each end user sends a request DTU to the switch and/or router asking for permission to join a multicast group. The switch and/or router extracts identification data from the request data transmission unit (DTU) and determines whether the requesting end user is cleared for the requested specific data flow. This determination may be made by sending a query DTU containing the identification data to a policy server which checks the identification data against preprogrammed criteria in its databases. The policy server then sends a response DTU to the switch and/or router confirming or denying the authenticity or legitimacy of the request based on the identification data. In the meantime, after the switch and/or router sends the query DTU to the policy server, the switch and/or router allows the specific requested data flow to proceed to the requesting end user. If, based on the response from the policy server, the request is determined to not be legitimate or authentic, the specific data flow is terminated. If the request is legitimate or authentic, then the data flow is allowed to flow uninterrupted by the switch and/or router.

摘要翻译： 用于向内容提供商提供安全的方式，设备和系统，以仅将数据流多播到合法的最终用户。 通过对每个可能合法的最终用户请求特定数据流进行具体决定，可以考虑不同的用户简档。 此外，通过使交换机和/或路由器控制到特定最终用户的特定数据流来避免端对端加密。 每个终端用户向交换机和/或路由器发送请求DTU，要求加入组播组的权限。 交换机和/或路由器从请求数据传输单元（DTU）提取识别数据，并确定请求的最终用户是否被清除所请求的特定数据流。 可以通过将包含标识数据的查询DTU发送到根据其数据库中的预编程标准来检查标识数据的策略服务器来进行该确定。 然后，策略服务器基于识别数据向交换机和/或路由器发送响应DTU来确认或拒绝请求的真实性或合法性。 同时，在交换机和/或路由器将查询DTU发送到策略服务器之后，交换机和/或路由器允许特定请求的数据流进行到请求的最终用户。 如果根据策略服务器的响应确定请求不合法或可信，则特定的数据流将被终止。 如果请求是合法或真实的，则允许数据流由交换机和/或路由器不间断地流动。