TRANSMISSION PATH LENGTH DETECTION DEVICE AND NETWORK COMMUNICATION DEVICE

Title:

TRANSMISSION PATH LENGTH DETECTION DEVICE AND NETWORK COMMUNICATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/199432

Kind Code:

A1

Abstract:

This transmission path length detection device (3) is configured to comprise: a first capacitance calculation unit (21) which carries out observations of voltage changes in a transmission path (2) in a communication network, and, on the basis of such voltage changes, calculates a total capacitance that represents an overall capacitance of said transmission path (2); a second capacitance calculation unit (22) which makes a measurement of characteristic impedance of the transmission path (2) and then calculates a capacitance per unit length of the transmission path (2) from said characteristic impedance; and an electrical length calculation unit (23) which calculates an electrical length of the transmission path (2) by dividing a total capacitance calculated by the first capacitance calculation unit (21) by a capacitance per unit length calculated by the second capacitance calculation unit (22).

Inventors:

ITAKURA HIROSHI (JP)
AKEBOSHI YOSHIHIRO (JP)

Application Number:

PCT/JP2020/015344

Publication Date:

October 07, 2021

Filing Date:

April 03, 2020

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

G01R31/00

Domestic Patent References:

WO2019043828A1

2019-03-07

Foreign References:

JP2013185978A	2013-09-19
JPH1164412A	1999-03-05
JP2007163237A	2007-06-28
JP2006017606A	2006-01-19
JP2004064754A	2004-02-26
US20110012608A1	2011-01-20
JPH07201419A	1995-08-04
JP2013024729A	2013-02-04

Other References: