公开(公告)号：US08135856B2

公开(公告)日：2012-03-13

申请号：US12939062

申请日：2010-11-03

申请人： Francis Roger Labonte ,  Sebastien Cote ,  Yves Lefebvre

发明人： Francis Roger Labonte ,  Sebastien Cote ,  Yves Lefebvre

IPC分类号： G06F15/16 ,  G01R31/08

CPC分类号： H04L65/608 ,  H04L41/142 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/16 ,  H04L47/10 ,  H04L47/283 ,  H04L47/29 ,  H04L47/30 ,  H04L47/38 ,  H04L65/00 ,  H04L65/4092 ,  H04L65/80 ,  H04N21/4126 ,  H04N21/47815 ,  H04N21/64322 ,  H04N21/812

摘要： Methods of data streaming from an encoder to a decoder through a connection subjected to time-varying conditions are disclosed. The connection is assigned a nominal flow rate and an encoding coefficient associated with the connection modifies the nominal flow rate to determine a permissible flow rate compatible with a time-varying state of the connection. Multiple performance characteristics are associated with the connection and corresponding sets of performance measurements taken over adaptively selected time windows are acquired. Performance metrics having one-to-one correspondence to the performance characteristics are determined and compared with lower bounds and upper bounds of respective predefined acceptance intervals. A current encoding coefficient is computed as a function of the performance metrics and used to determine the permissible flow rate. The encoder's configuration is adapted to produce an encoded signal which maximizes signal fidelity under the constraint of the permissible flow rate.

摘要翻译： 公开了通过经历时变条件的连接从编码器到解码器的数据流的方法。 该连接被分配了标称流量，并且与连接相关联的编码系数修改了额定流量，以确定与连接的时变状态兼容的允许流量。 多个性能特征与连接相关联，并且获取在自适应选择的时间窗口上采取的相应的性能测量集合。 确定与性能特征一一对应的性能度量，并与各个预定接受间隔的下限和上限进行比较。 根据性能度量计算当前的编码系数，并用于确定允许的流量。 编码器的配置适于产生在允许流量的约束下使信号保真度最大化的编码信号。

公开(公告)号：US20120173676A1

公开(公告)日：2012-07-05

申请号：US13417271

申请日：2012-03-11

申请人： Francis Roger Labonte ,  Sebastien Cote ,  Yves Lefebvre

发明人： Francis Roger Labonte ,  Sebastien Cote ,  Yves Lefebvre

IPC分类号： G06F15/16

CPC分类号： H04L65/608 ,  H04L41/142 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/16 ,  H04L47/10 ,  H04L47/283 ,  H04L47/29 ,  H04L47/30 ,  H04L47/38 ,  H04L65/00 ,  H04L65/4092 ,  H04L65/80 ,  H04N21/4126 ,  H04N21/47815 ,  H04N21/64322 ,  H04N21/812

摘要： A method of data streaming from an encoder to a decoder through a time-varying connection, is disclosed. The method includes associating an encoding coefficient with said time-varying connection, the encoding coefficient determining a flow rate at an output of said encoder; defining a performance metric of the time-varying connection; defining an acceptance interval of the performance metric having a lower bound and an upper bound; acquiring a set of performance measurements of the time-varying connection over a time window at a current encoding coefficient; determining a current value of the metric of the time-varying connection according to the set of measurements; determining a preferred encoding coefficient according to the current value of the metric; and modifying the current encoding coefficient based on the current value of the metric and the acceptance interval to attain the preferred encoding coefficient. A corresponding streaming server and system for data streaming are also provided.

摘要翻译： 公开了一种通过时变连接从编码器到解码器的数据流传输的方法。 该方法包括将编码系数与所述时变连接相关联，所述编码系数确定所述编码器的输出处的流量; 定义时变连接的性能度量; 定义具有下限和上限的性能度量的接受间隔; 以当前编码系数在时间窗口上获取时变连接的一组性能测量; 根据所述测量集确定所述时变连接的度量的当前值; 根据度量的当前值确定优选的编码系数; 以及基于度量的当前值和接受间隔修改当前编码系数以获得优选的编码系数。 还提供了用于数据流的相应流服务器和系统。

公开(公告)号：US20100287297A1

公开(公告)日：2010-11-11

申请号：US12463410

申请日：2009-05-10

申请人： Yves LEFEBVRE

发明人： Yves LEFEBVRE

IPC分类号： G06F15/16

CPC分类号： H04L65/602 ,  H04L65/4084 ,  H04L65/80 ,  H04N21/23805 ,  H04N21/2385 ,  H04N21/44227 ,  H04N21/6125 ,  H04N21/6175 ,  H04N21/6332 ,  H04N21/6373 ,  H04N21/64738

摘要： A server for data streaming encodes multimedia signals at bit rates compatible with a connection of time-varying conditions and informs a client receiving a multimedia signal of changing bit rates and causes of change. The server supports several clients and includes a flow controller and at least one encoder. The flow controller derives metrics from measurements to determine a permissible transmission rate from the server to each active client. An encoder adapts individual transmission rates of signals according to respective permissible transmission rates. An overlay module, coupled to a multimedia signal source, the flow controller, and an encoder, superimposes informative insertions indicating permissible transmission rates and associated metrics on a multimedia signal to inform a client of changing transmission rates and causes of change. An informative insertion has a predefined duration and is sent either periodically or following a substantial change of network conditions.

摘要翻译： 用于数据流的服务器以与时变条件的连接兼容的比特率对多媒体信号进行编码，并通知客户端接收改变比特率和变化原因的多媒体信号。 服务器支持多个客户端，包括一个流量控制器和至少一个编码器。 流量控制器从测量中导出指标，以确定从服务器到每个活动客户端的允许传输速率。 编码器根据各自的允许传输速率来适应各个信号的传输速率。 耦合到多媒体信号源，流量控制器和编码器的覆盖模块将指示允许传输速率和相关度量的信息插入叠加在多媒体信号上，以向客户通知改变传输速率和变化原因。 信息插入具有预定义的持续时间，并且周期性地或在网络条件的实质性改变之后被发送。

公开(公告)号：US20100023635A1

公开(公告)日：2010-01-28

申请号：US12180704

申请日：2008-07-28

申请人： Francis Roger LABONTE ,  Sebastien Cote ,  Yves Lefebvre

发明人： Francis Roger LABONTE ,  Sebastien Cote ,  Yves Lefebvre

IPC分类号： G06F15/16

CPC分类号： H04L65/608 ,  H04L41/142 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/16 ,  H04L47/10 ,  H04L47/283 ,  H04L47/29 ,  H04L47/30 ,  H04L47/38 ,  H04L65/00 ,  H04L65/4092 ,  H04L65/80 ,  H04N21/4126 ,  H04N21/47815 ,  H04N21/64322 ,  H04N21/812

摘要： Methods of data streaming from an encoder to a decoder through a connection subjected to time-varying conditions are disclosed. The connection is assigned a nominal flow rate and an encoding coefficient associated with the connection modifies the nominal flow rate to determine a permissible flow rate compatible with a time-varying state of the connection. Multiple performance characteristics are associated with the connection and corresponding sets of performance measurements taken over adaptively selected time windows are acquired. Performance metrics having one-to-one correspondence to the performance characteristics are determined and compared with lower bounds and upper bounds of respective predefined acceptance intervals. A current encoding coefficient is computed as a function of the performance metrics and used to determine the permissible flow rate. The encoder's configuration is adapted to produce an encoded signal which maximizes signal fidelity under the constraint of the permissible flow rate.

摘要翻译： 公开了通过经历时变条件的连接从编码器到解码器的数据流的方法。 该连接被分配了标称流量，并且与连接相关联的编码系数修改了额定流量，以确定与连接的时变状态兼容的允许流量。 多个性能特征与连接相关联，并且获取在自适应选择的时间窗口上采取的相应的性能测量集合。 确定与性能特征一一对应的性能度量，并与各个预定接受间隔的下限和上限进行比较。 根据性能度量计算当前的编码系数，并用于确定允许的流量。 编码器的配置适于产生在允许流量的约束下使信号保真度最大化的编码信号。