Title:
A communication control unit and a communications system
Document Type and Number:
Japanese Patent JP6045950
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a redundant configuration of a time master function using an existing synchronous protocol, to obtain a highly reliable time synchronization function.SOLUTION: A communication control device, transmitting/receiving each synchronous packet with one or more communication devices connected through a network to synchronize time, includes: a parameter preservation unit for preserving a parameter obtained by observing a first synchronous packet of a first communication device; and a packet generation unit for generating a second synchronous packet on the basis of the parameter and the time information of the self-communication control device communication unit; and a communication unit for transmitting the second synchronous packet to the communication device.
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Inventors:
Ryuya Maruyama
Tsutomu Yamada
Kido Sanyasu
Masashi Yoshida
Teruaki Sakata
Tsutomu Yamada
Kido Sanyasu
Masashi Yoshida
Teruaki Sakata
Application Number:
JP2013055383A
Publication Date:
December 14, 2016
Filing Date:
March 18, 2013
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04L7/00; H04L12/42; H04L12/44
Domestic Patent References:
| JP2012227688A | ||||
| JP2011176718A | ||||
| JP6030009A | ||||
| JP2010060502A |
Foreign References:
| CN102325019A |
Attorney, Agent or Firm:
Shinji Oga
Hiroyuki Hyakumoto
Hiroyuki Hyakumoto