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:
Oct. 06, 2015
Filed:
Nov. 28, 2012
Jun Mizuguchi, Tokyo, JP;
Jun Mizuguchi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A communication apparatus (a slave) that performs time synchronization with a master apparatus on the basis of a time synchronization message transmitted from the master apparatus (a master) at a fixed cycle. The communication apparatus (the slave) includes a CPU that stores, in a transmission request message for requesting transmission of the time synchronization message, a requesting transmission rate, and transmits the transmission request message to the communication apparatus (the master). The CPU calculates time synchronization accuracy, which is a difference between time of the master apparatus and time of its own apparatus, on the basis of the time synchronization message; determines on the basis of the time synchronization accuracy whether the requesting transmission rate is changed; and, transmits, if it is determined that the requesting transmission rate is changed, the transmission request message, in which the changed requesting transmission rate is stored, to the communication apparatus (the master).