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:
Jan. 16, 2024
Filed:
Apr. 23, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A breakdown determination system includes a switching device that switches a transmission path of optical signals between an upper network and a lower network, one or more intermediate communication devices that relay communication between the upper network and the lower network, a selection device that selects a standby port of the intermediate communication devices, a measurement device that connects to the selected standby port via the switching device and measures an optical signal of the connected standby port, a determination device that determines whether an intermediate communication device including the selected standby port breaks down based on a result of measuring the optical signal, and a storage device that stores a result of determining whether the intermediate communication device breaks down.