The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2019
Filed:
Nov. 22, 2017
Soken, Inc., Nishio, Aichi-pref., JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Youhei Sekiya, Nishio, JP;
Hiroyuki Mori, Nishio, JP;
Yoshifumi Kaku, Kariya, JP;
Hironobu Akita, Kariya, JP;
SOKEN, INC., Nishio, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A relay device for data between communication cables having a signal line in full duplex communication, includes: communication units connected to the communication cables; and a main controller executing a relay process of the data. Each communication unit includes: an input/output unit of an analog signal; an analog/digital converter converting the analog signal into a digital signal; a generator generating another digital signal based on another analog signal input to another communication unit; and an echo canceller calculating a filter coefficient based on the other digital signal and the digital signal, and executing a cancellation process of removing a component derived from the other digital signal from the digital signal according to the filter coefficient. The communication unit or the main control unit includes a sign determination unit determining based on a time change of the filter coefficient whether a sign of disconnection exists in the signal line.