Methods and apparatuses for transferring data
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United States of America Patent
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Dec 13, 2011
Grant Date -
Apr 26, 2007
app pub date -
Jul 31, 2006
filing date -
Jun 22, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides several methods and apparatuses for transmitting multimedia data using streaming media protocols such as real-time transfer protocols (RTP) and real-time streaming protocols (RTSP) in a computer network environment. In one exemplary embodiment, a request for RTP data and its associated extension is sent from the caching proxy server to the server. The request may be for one specific type of data or multiple unrelated types of data. The server responds to the request indicating its support for the requested RTP extension data. The caching proxy server determines whether to proceed or terminate the data transmission process based on the response provided by the server. If it is determined to proceed with the data transmission process, the caching proxy informs the server to send the requested and supported RTP data. The server sends the requested data in a variable and extendible header format.
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