Title:
COMMUNICATION SYSTEM AND METHOD FOR CONTROLLING COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/071167
Kind Code:
A1
Abstract:
In order to avoid the phenomenon of communication being impeded by a plurality of slave devices sharing one communication line and signals transmitted by the plurality of slave devices overlapping during communication from the plurality of slave devices to a master device, a communication system according to the present invention has a first master device and a plurality of slave devices connected to the first master device via a first transmission path and a second transmission path, wherein: the first master device transmits a first pulsed light to the first transmission path and receives a return light of the first pulsed light from the second transmission path; each of the slave devices is provided on a first return path which connects the first transmission path and the second transmission path, modulates the first pulsed light, and outputs the modulated first pulsed light as the return light of the first pulsed light; and the width of the first pulsed light is narrower than double the shortest distance from among the transmission distance between the slave device outputting the return light and the transmission distance between the first master device and the slave device outputting the return light.
Inventors:
YANO YUTAKA (JP)
INADA YOSHIHISA (JP)
NAKANO TAKEHIRO (JP)
AIDA RYUJI (JP)
INADA YOSHIHISA (JP)
NAKANO TAKEHIRO (JP)
AIDA RYUJI (JP)
Application Number:
PCT/JP2021/035227
Publication Date:
April 07, 2022
Filing Date:
September 27, 2021
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04J14/08; H04B10/071; H04B10/29
Foreign References:
| JPH05344067A | 1993-12-24 | |||
| JP2006313782A | 2006-11-16 | |||
| JP2005331342A | 2005-12-02 | |||
| JP2015170871A | 2015-09-28 | |||
| JP2012257020A | 2012-12-27 | |||
| JPH07202813A | 1995-08-04 | |||
| JP3307334B2 | 2002-07-24 | |||
| JPS6410810B2 | 1989-02-22 | |||
| JP2693674B2 | 1997-12-24 | |||
| JP4009390B2 | 2007-11-14 | |||
| JP2020164837A | 2020-10-08 |
Other References:
See also references of EP 4224747A4
Attorney, Agent or Firm:
KITAJIMA Hiroshi et al. (JP)
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