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:
Apr. 25, 2023
Filed:
Nov. 28, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Kaoru Arai, Musashino, JP;
Hiroki Sakuma, Musashino, JP;
Masahiro Nakagawa, Musashino, JP;
Shunichi Tsuboi, Musashino, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
[Problem] An object is to obtain a time quality of another GM with high accuracy on the basis of a GM a time quality of which is known already. [Solution] A first TCincludes a time comparison unitthat calculates time difference information by comparing first time information of a first PTP processing unitand second time information of a second PTP processing unitwith each other. In addition, a quality calculation devicemeasures time difference information until time difference information obtained by a time comparison unitof the first TCand time difference information obtained by a time comparison unitof a second TCmatch each other, and obtains a GM time quality of a second GMon the basis of a transmission time error of the time transmission networkat a timing when both of pieces of the time difference information match each other.