Title:
通信システム
Document Type and Number:
Japanese Patent JP6884014
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to automatically prevent in advance an erroneous synchronization (erroneous connection) between a master modem and a slave modem corresponding to the master modem from occurring even when inter-signal interference occurs between respective communication lines.SOLUTION: The communications system includes master modems M1 to M5 and slave modems S1 to S5 that communicate with each other by being connected through communication media CM1 to CM5. A plurality of communication lines CL1 to CL5 through which the master modems and the slave modems synchronously communicate with each other using a preamble pattern for synchronization generated in a communication frame of the communication are provided together. Communication is performed through at least two of the communication lines at the same time. On the basis of a result of an erroneous synchronization measurement and a result of an interference level measurement, a current synchronization preamble pattern of the communication frame is set to a different synchronization preamble pattern.SELECTED DRAWING: Figure 2
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Inventors:
Sawako Kojima
Application Number:
JP2017055489A
Publication Date:
June 09, 2021
Filing Date:
March 22, 2017
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L7/10; H04L12/28
Domestic Patent References:
| JP2016225900A | ||||
| JP11243381A | ||||
| JP11007349A | ||||
| JP2006115326A | ||||
| JP2005510171A |
Attorney, Agent or Firm:
Patent Business Corporation Parumo Patent Office
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa