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:
Aug. 22, 2023

Filed:

Jul. 14, 2020
Applicant:

Denso Corporation, Kariya, JP;

Inventors:

Yoshifumi Kaku, Kariya, JP;

Shinya Ishibashi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 45/02 (2022.01); H04L 49/102 (2022.01); H04L 12/42 (2006.01); H04L 101/622 (2022.01);
U.S. Cl.
CPC ...
H04L 45/02 (2013.01); H04L 12/42 (2013.01); H04L 49/102 (2013.01); H04L 2101/622 (2022.05);
Abstract

A relay device, or a switch, in a ring network corrects connection information including (i) identification information of respective switches in the network and (ii) a connection order of other switches seen from a subject switch, by storing in a memory a switch ID table of the subject switch, which includes an ID of each of the other switches and a connection order of the other switches seen from the subject switch, for identifying an abnormal section of the network, for example. Each of the switches has a function that (i) generates anew ID for the restarted switch for generating a new ID table and (ii) causes the other switches to generate a respective new switch ID table, when detecting switch ID duplication among the switches or when restarting from a reset.


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