Sequence-preserving deep-packet processing in a multiprocessor system
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United States of America Patent
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Mar 3, 2009
Grant Date -
Apr 24, 2008
app pub date -
Dec 24, 2007
filing date -
Jul 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Packets or frames of data may be compressed, encrypted/decrypted, filtered, classified, searched or subjected to other deep-packet processing operations before being distributed through the internet. The microprocessor system and method of the present invention provide for the orderly processing of such data packets without disrupting or changing the sequence in which the data is intended to be transmitted to its destination. This is achieved by receiving frames into an input buffer for processing. Associated with this input buffer is a unit for determining the operation to be performed on each frame. An arbitrator assigns each frame to a processing core engine. An output buffer collects the processed frames, and a sequencer forwards the processed frames from the output buffer to their destination in the same order as received by the input/output buffer. Maintaining the sequence of data transmission is particularly useful in voice transmission, such as videos and movies.
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