Packet comparator

H - Electricity – 04 – L

Patent

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Details

H04L 29/06 (2006.01) H04N 21/434 (2011.01) H04N 7/24 (2011.01)

Patent

CA 2713906

A packet comparator includes a match packet buffer and a first in first out (FIFO) buffer that stores a reference packet stream. Once a packet in the reference stream and a candidate stream are matched to the match packet, the reference stream and the candidate stream are considered synchronized. Thereafter, the two streams are passed through a compare function and a resultant stream is output from the packet comparator. Possible resultant streams include the results of an exclusive OR (XOR) operation between all, or selected parts, of packets in each of the streams.

L'invention concerne un comparateur de paquets comprenant une mémoire tampon de paquets de correspondance et une mémoire tampon premier entré, premier sorti (FIFO) qui stocke un flux de paquets de référence. Lorsqu'un paquet dans le flux de référence et dans un flux candidat correspond au paquet de correspondance, le flux de référence et le flux candidat sont considérés comme synchronisés. Par la suite, les deux flux sont passés dans une fonction de comparaison et un flux résultant est sorti du comparateur de paquets. Des flux résultants possibles comprennent les résultats d'une opération par OU exclusif (XOR) entre tous les paquets, ou des parties sélectionnées de ceux-ci, dans chacun des flux.

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