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:
Feb. 11, 2014
Filed:
Nov. 28, 2011
Yuuki Mikami, Kariya, JP;
Toru Itabashi, Anjo, JP;
Yoshiharu Takeuchi, Kariya, JP;
Kenji Mochizuki, Chita-gun, JP;
Naoya Tsuchiya, Kariya, JP;
Yuuki Mikami, Kariya, JP;
Toru Itabashi, Anjo, JP;
Yoshiharu Takeuchi, Kariya, JP;
Kenji Mochizuki, Chita-gun, JP;
Naoya Tsuchiya, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
A signal input circuit includes: a signal input device having a signal input terminal; an inspection capacitor connected between the signal input terminal and a reference potential; a connection unit connecting/disconnecting an inspection path between the inspection capacitor and the signal input terminal; a charge and discharge unit charging/discharging the inspection capacitor; and a determination processing unit carrying out a terminal failure detection processing. The determination processing unit controls the connection unit to disconnect the inspection path and controls the charge and discharge unit to set the voltage of the inspection capacitor to a terminal inspection voltage in a charge and discharge procedure, controls the connection unit to connect the inspection path in a continuity establishing procedure, and detects the terminal failure at the signal input terminal or a communication path from the signal input terminal based on a voltage of the inspection path.