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    • 2. 发明公开
    • Fast channel change
    • Schneller Kanalwechsel
    • EP1523190A1
    • 2005-04-13
    • EP04021617.8
    • 2004-09-10
    • MICROSOFT CORPORATION
    • Green, Dustin L.Baldwin, James A.Barrett, Peter T.
    • H04N7/173
    • H04L12/185H04N7/17336H04N21/23106H04N21/4383H04N21/472H04N21/6405H04N21/6408H04N21/6581
    • In an exemplary server implementation, a server is configured to retain at least one independent frame for each video channel of multiple video channels that are being distributed using multicast communications and is adapted to respond to channel change requests from clients by transmitting the retained at least one independent frame of a requested video channel to a requesting client using a unicast communication. In an exemplary method implementation, a method for fast channel changing in a multicast video distribution architecture includes: detecting a channel change request that indicates a requested channel, the requested channel corresponding to a multicast group; and transmitting a retained intra frame for the requested channel as a unicast communication.
    • 在示例性服务器实现中,服务器被配置为保持使用多播通信分发的多个视频信道的每个视频信道的至少一个独立帧,并且适于通过发送所保留的至少一个 所请求的视频信道的独立帧到使用单播通信的请求客户端。 在一种示例性方法实现中,一种用于多播视频分发架构中的快速信道改变的方法包括:检测指示所请求的信道的信道改变请求,所述信道对应于多播组; 以及将所请求的信道的保留帧内帧作为单播通信发送。
    • 6. 发明公开
    • Architecture for distributed sending of media data
    • Architekturfürverteiltes Senden von Mediendaten
    • EP1523189A1
    • 2005-04-13
    • EP04021616.0
    • 2004-09-10
    • MICROSOFT CORPORATION
    • Green, Dustin L.Baldwin, James A.Barrett, Peter T.
    • H04N7/173
    • Media data is distributed across multiple devices, and decentralized media data dissemination architecture is formed. Multiple respective senders are associated with multiple respective distributed portions of the media data. Multiple schedulers are associated with clients and are capable of scheduling the sending of media data thereto. Schedulers formulate send requests that stipulate particular media data portions and designate destination clients. These send requests are transmitted to the multiple senders in accordance with the associated respective distributed portions in conjunction with the stipulated particular media data portion of each send request. The senders are capable of sending the stipulated particular media data portions of the send requests to the designated destination clients without routing through the schedulers. In a described implementation, a sender and a scheduler are present on each device of the multiple devices.
    • 媒体数据分布在多个设备上,形成分散的媒体数据传播架构。 多个相应的发送者与媒体数据的多个相应分布的部分相关联。 多个调度器与客户端相关联,并且能够调度向其发送媒体数据。 调度器制定规定特定媒体数据部分并指定目标客户端的发送请求。 这些发送请求将结合每个发送请求的规定的特定媒体数据部分,根据相关联的分散部分发送给多个发送者。 发送方能够将发送请求的规定的特定媒体数据部分发送到指定的目的地客户端而不通过调度器路由。 在所描述的实现中,在多个设备的每个设备上存在发送者和调度器。