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.

Date of Patent:
Mar. 08, 2011

Filed:

Jun. 27, 2008
Applicants:

Hiroyuki Sasaki, Kawasaki, JP;

Masayuki Sato, Kawasaki, JP;

Inventors:

Hiroyuki Sasaki, Kawasaki, JP;

Masayuki Sato, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

Path changeover method and device are provide in which a communication interruption time caused by occurrence of a transmission failure is shortened. On a frame receiving side, address information of a frame received from a first physical port is stored in a table in association with the first physical port. When detecting that a frame stored with the same address information as the address information stored in the table is received at a second physical port, the frame received at the second physical port is captured and following frames received at the first physical port are discarded.


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