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:
Dec. 20, 2016
Filed:
Dec. 31, 2014
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Kazutoshi Kariya, Tsuchiura, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
Each of first and second monitoring points monitors the continuity between itself and outside of the device by use of a CCM frame. First and second internal monitoring points monitor the continuity between the first monitoring point and the second monitoring point inside the device by an internal continuity monitoring frame. When a first internal monitoring point or a second internal monitoring point does not receive the internal continuity monitoring frame within a predetermined period, a ring control unit instructs the first and second monitoring points to transmit a RDI frame or instructs them to stop transmission of a CCM frame.