Packet identification device and packet identification method

Details Packet identification device and packet identification method Packet identification device and packet identification method

2005-03-18

2008-11-25

Ngo, Ricky (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S401000, C726S013000

Reexamination Certificate

active

07457292

ABSTRACT:
A packet identification device which is capable of achieving high-speed packet identification while suppressing an increase in circuit size. A lookup table stores a plurality of reference data each divided into unit data associated with respective attributes, in a distributed manner in respective storage areas having addresses defined on an attribute-by-attribute basis, and is operable when a reading address is input, to output a plurality of unit data associated with one of the attributes corresponding to the reading address. An analysis circuit analyzes an attribute of a comparison data item in the input packet. An address control circuit outputs an address corresponding to the attribute of the comparison data item analyzed by the analysis circuit to the lookup table, as the reading address. A plurality of unit comparison circuits are provided in association with the plurality of reference data, respectively, for each performing comparison between an associated one of the plurality of unit data output from the lookup table and the comparison data item analyzed by the analysis circuit.

REFERENCES:
patent: 6490279 (2002-12-01), Chen et al.
patent: 7012890 (2006-03-01), Yazaki et al.
patent: 2002/0067722 (2002-06-01), Kanakubo
patent: 2002/0191598 (2002-12-01), Mays
patent: 2003/0223421 (2003-12-01), Rich et al.
patent: 11-164271 (1999-06-01), None
patent: 11-305992 (1999-11-01), None
patent: 2000-92110 (2000-03-01), None
patent: 2002-247032 (2002-08-01), None
patent: 2003-18198 (2003-01-01), None
patent: WO 99/00750 (1999-01-01), None
patent: WO 2004/068804 (2004-08-01), None
Patent Abstracts of Japan, Publication No. 04-109337, Published Apr. 10, 1992.
Patent Abstracts of Japan, Publication No. 07-143156, Published Jun. 2, 1995.
Patent Abstracts of Japan, Publication No. 11-305992, Published Nov. 5, 1999.
Patent Abstracts of Japan, Publication No. 2000-092110, Published Mar. 31, 2000.
Patent Abstracts of Japan, Publication No. 2002-335275, Published Nov. 22, 2002.
Patent Abstracts of Japan, Publication No. 2003-018198, Published Jan. 17, 2003.
Int'l Search Report dated May 20, 2003 in priority PCT/JP03/00863.
Japanese Office Action issued on Aug. 22, 2006 in corresponding Japanese Patent Application No. 2004-567524.
Japanese Office Action issued May 8, 2007 in corresponding Japanese Patent Application No. 2004-567524. The references cited in this Office Action are the same as those already of record.

Affiliated with

Also associated with

Rating

Packet identification device and packet identification method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Packet identification device and packet identification method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Packet identification device and packet identification method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4032036