公开(公告)号：US07406497B1

公开(公告)日：2008-07-29

申请号：US10676485

申请日：2003-10-01

申请人： Robert Edward Markowitz ,  Joseph Thomas O'Neil ,  Kenneth H. Rosen ,  Peter H. Stantebeck

发明人： Robert Edward Markowitz ,  Joseph Thomas O'Neil ,  Kenneth H. Rosen ,  Peter H. Stantebeck

IPC分类号： G06F15/16 ,  H04L1/18

CPC分类号： H04L65/60 ,  H04N21/222 ,  H04N21/2265 ,  H04N21/23113 ,  H04N21/23439 ,  H04N21/25833 ,  H04N21/2662 ,  H04N21/6377 ,  H04N21/658 ,  H04N21/6581

摘要： A proxy apparatus and method for streaming media information via at least one network and for building-up a good quality version of the media information. When a user device communicates with the proxy apparatus using a particular bandwidth and requests that media information be provided from a media server, the proxy apparatus first determines if a version of the media information encoded for the user device's connection bandwidth has been stored in the proxy apparatus. If a version of the media information encoded for the user device's bandwidth is not available from the proxy apparatus, the proxy apparatus sends a request to a media server for the media information. Once the media server receives the request, the media server begins to stream a copy of the media information encoded for the user device's bandwidth to the user device via the network and proxy device. If a version of the media information for the bandwidth is not available from the media server, the version for the largest bandwidth that does not exceed the bandwidth of the user device connection, is streamed to the user device. If the version of the media information has missing packets, the proxy device sends retransmission requests to the media server to obtain the missing packets, thereby building-up a good quality version of the media information.

摘要翻译： 一种用于经由至少一个网络流式传输媒体信息并用于建立媒体信息的高质量版本的代理装置和方法。 当用户设备使用特定带宽与代理设备进行通信并请求从媒体服务器提供媒体信息时，代理设备首先确定为用户设备的连接带宽编码的媒体信息的版本是否已被存储在代理中 仪器。 如果针对用户设备的带宽编码的媒体信息的版本不能从代理设备获得，则代理设备向媒体服务器发送针对媒体信息的请求。 一旦媒体服务器接收到请求，媒体服务器开始通过网络和代理设备将用户设备带宽编码的媒体信息的副本流传输给用户设备。 如果媒体服务器不能获得带宽媒体信息的版本，则将不超过用户设备连接带宽的最大带宽的版本流传输到用户设备。 如果媒体信息的版本丢失了报文，则代理设备向媒体服务器发送重发请求，获取丢失的报文，从而构建出高质量的媒体信息。