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Title:
COMMUNICATION DEVICE AND COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/085169
Kind Code:
A1
Abstract:
Provided is a communication system which uses a pulse width-modulated signal as a transmission code between a plurality of nodes connected to a communication line. A master node includes: a transmission transistor connected to the communication line; a detector for detecting a current change in an ON period of the transmission transistor; and a communication circuit for determining an OFF-timing of the transmission transistor on the basis of the timing of generation of the current change(= ON-timing of a second transmission transistor provided in a slave node). For example, the communication circuit may determine the OFF-timing of the transmission transistor so that a simultaneous ON-period TB of the transmission transistor and the second transmission transistor satisfies TB = (2n-1)/2f (where f is the frequency of EMI noise).

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Inventors:
MASUDA SHINYA (JP)
TANAKA SATOSHI (JP)
MUKAI TORU (JP)
YAMAKAMI HIROKI (JP)
Application Number:
PCT/JP2020/039043
Publication Date:
May 06, 2021
Filing Date:
October 16, 2020
Export Citation:
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Assignee:
ROHM CO LTD (JP)
International Classes:
H04L25/02; H03K7/08; H04L25/03; H04L25/49
Foreign References:
JP2018007237A2018-01-11
JP2015204519A2015-11-16
JP2015043512A2015-03-05
JP2017200103A2017-11-02
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
Download PDF:
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