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:
May. 06, 2014
Filed:
Feb. 24, 2010
Applicant:
Chikara Sawaguchi, Tsukuba, JP;
Inventor:
Chikara Sawaguchi, Tsukuba, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A network relay device constituting a network includes a frame determination unit for referencing a protocol identifier contained in a frame from an external network relay device constituting another standard network different from the network, to determine whether or not the frame contains a confirmation frame for network operation, administration or maintenance, and a processing unit for performing operation, administration, or maintenance on the frame, when the frame determination unit determines that the frame is the confirmation frame.