Title:
SIGNAL TRANSMISSION DEVICE AND SIGNAL TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JP2022002381
Kind Code:
A
Abstract:
To detect a failure in a filter circuit used as a PoC filter.SOLUTION: A signal transmission device 1 includes: a communication part 11 connected to an electronic device 2 with a signal wiring 4, for performing communication with the electronic device 2 via the signal wiring 4; a signal processing part 12 for performing signal processing for communication performed by the communication part 11; a power supply part 13 for supplying a DC current Id to the electronic device 2 via the signal wiring 4; and a filter circuit 14 connected between the signal wiring 4 and the power supply part 13. The filter circuit 14 includes a plurality of filters (inductors L1, L2) having mutually different frequency characteristics. The signal processing part 12 obtains communication quality information Qf indicating communication quality on at least two frequency bandwidths or more, and determines a status of the filter circuit 14 based on the communication quality information Qf.SELECTED DRAWING: Figure 4
Inventors:
UEMATSU YUTAKA
SAKAMOTO HIDEYUKI
SAKAMOTO HIDEYUKI
Application Number:
JP2020107187A
Publication Date:
January 06, 2022
Filing Date:
June 22, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD
HITACHI LTD
HITACHI LTD
International Classes:
H04L25/02
Attorney, Agent or Firm:
Patent Business Corporation Sunnext International Patent Office
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