公开(公告)号：EP2426940A1

公开(公告)日：2012-03-07

申请号：EP11191801.7

申请日：2004-09-13

申请人： The DirecTV Group, Inc.

发明人： Wolfe, Andrew L ,  Westerhoff, David

IPC分类号： H04N21/2662

CPC分类号： H04N21/2402 ,  H04N21/234309 ,  H04N21/23805 ,  H04N21/2401 ,  H04N21/2662 ,  H04N21/43637 ,  H04N21/440218 ,  H04N21/6131

摘要： An apparatus for downloading video content to a client device over a communication network, the apparatus comprising an encoder for encoding video content according to an initial video encoding standard and an initial video encoding rate; a storage unit coupled to the encoder for storing the encoded video content; a transcoder coupled to the storage unit for transcoding the video content stored in the storage unit according to a second video encoding standard and a second video encoding rate, wherein the first and second video encoding standards differ; a communications interface coupled to the transcoder for downloading the video content to the client device over the communication network; and a controller coupled to and controlling the storage unit, the encoder, the transcoder, and the communications interface, the controller monitoring and determining a transmission rate between the communications interface and the client device and adaptively selecting the second video encoding standard and the second video encoding rate based on the determined transmission rate; wherein the controller is configured to determine the transmission rate between the communications interface and the client device based on a transmission rate of the communication network and a respective bandwidth allocation of the client device; and wherein the controller is further configured to allocate a plurality of respective bandwidth allocations to a plurality of client devices on the communication network.

摘要翻译： 一种用于通过通信网络将视频内容下载到客户端设备的装置，该装置包括：根据初始视频编码标准和初始视频编码速率对视频内容进行编码的编码器; 耦合到所述编码器的存储单元，用于存储编码的视频内容; 耦合到所述存储单元的代码转换器，用于根据第二视频编码标准和第二视频编码速率对存储在所述存储单元中的视频内容进行代码转换，其中所述第一和第二视频编码标准不同; 通信接口，其耦合到代码转换器，用于通过通信网络将视频内容下载到客户端设备; 控制器，耦合到控制存储单元，编码器，代码转换器和通信接口，控制器监视和确定通信接口和客户端设备之间的传输速率，并自适应地选择第二视频编码标准和第二视频 基于确定的传输速率的编码速率; 其中所述控制器被配置为基于所述通信网络的传输速率和所述客户端设备的相应带宽分配来确定所述通信接口和所述客户端设备之间的传输速率; 并且其中所述控制器还被配置为向所述通信网络上的多个客户端设备分配多个相应的带宽分配。