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:
Jul. 23, 2024
Filed:
Sep. 09, 2022
Fujitsu Limited, Kawasaki, JP;
Ichiro Yokokura, Sano, JP;
Junichi Sugiyama, Kawasaki, JP;
Makoto Shimizu, Oyama, JP;
Toshihiro Suzuki, Kawasaki, JP;
Takeshi Noma, Fukuoka, JP;
Hisao Nakashima, Kawasaki, JP;
Yuji Ikegami, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
First transmission device includes a first counter that generates counter value incremented in a specified cycle. Second transmission device includes a second counter that generates counter value incremented in the specified cycle. Polarization variation monitoring device acquires a first counter value generated by the first counter and a second counter value extracted by the first transmission device from a received frame transmitted from the second transmission device when the first transmission device detects polarization variation, and a third counter value generated by the second counter and a fourth counter value extracted by the second transmission device from a frame transmitted from the first transmission device when the second detector detects the polarization variation. The polarization variation monitoring device determines an occurrence position of the polarization variation based on the first counter value, the second counter value, the third counter value and the fourth counter value.