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. 14, 2015
Filed:
Mar. 14, 2012
Applicants:
Mitsuru Kanda, Tokyo, JP;
Yasuyuki Kozakai, Kanagawa-ken, JP;
Kenichi Taniuchi, Tokyo, JP;
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 1/16 (2006.01); H04L 12/26 (2006.01); H04L 29/06 (2006.01); H04L 12/28 (2006.01); H04J 3/06 (2006.01); H04J 3/14 (2006.01);
U.S. Cl.
CPC ...
H04L 43/10 (2013.01); H04L 43/0805 (2013.01); H04L 69/28 (2013.01); H04J 3/0667 (2013.01); H04J 3/14 (2013.01);
Abstract
Provided are a communication device and a communication system capable of specifying a failure part in a network in which a time server and a communication path are made redundant. A communication device acquires time-related information from a plurality of time servers over a plurality of networks and compares the information to specify the failure part in the time servers or in the networks. A remote apparatus acquires time-related information from the communication device over the plurality of networks and compares the information to determine the failure of the communication device.