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. 31, 2022
Filed:
Dec. 29, 2020
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Assignee:
HITACHI, LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 41/0654 (2022.01); H04L 12/40 (2006.01); H04L 12/46 (2006.01); H04L 43/0811 (2022.01);
U.S. Cl.
CPC ...
H04L 41/0654 (2013.01); H04L 12/40176 (2013.01); H04L 12/462 (2013.01); H04L 43/0811 (2013.01);
Abstract
A route failure and a device failure are detected in a short time without erroneous recognition. A multiplexing system includes: a first system having a pair of processing devices forming a pair; a second system having a pair of processing devices forming a pair that are different from the first system; each processing device of the first system and the second system includes a survival monitoring unit configured to monitor a failure of the each processing device or the each LAN based on a device time-out for confirming survival of the each processing device and a route time-out for confirming survival of the each LAN set to be longer than the device time-out.