The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2007
Filed:
Feb. 20, 2002
Applicants:
Minoru Hidaka, Kodaira, JP;
Mitsuru Nagasaka, Kokubunji, JP;
Satoru Tsukada, Fujisawa, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/56 (2006.01); H04L 12/28 (2006.01); G06F 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method or apparatus for transferring packets, which enables fast lines to be housed for a high load service that requires many calculations in an edge node in a communication network, in which data flows are concentrated. Information obtained from an input packet is held in a table entry in the apparatus and whether to perform such a processing as encryption, etc. is decided according to the state of the source or destination of the input packet or the internal state of the apparatus, thereby performing such a processing as encryption only for necessary packets and reducing the number of calculations.