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. 02, 2016
Filed:
Jul. 05, 2013
Nohmi Bosai Ltd., Chiyoda-ku, Tokyo, JP;
Masaki Takahashi, Tokyo, JP;
Katsuhide Tsubokawa, Tokyo, JP;
NOHMI BOSAI LTD., Tokyo, JP;
Abstract
Provided is a fire alarm system including: a transmitter/receiver unit () for supplying a pulse voltage to power/signal lines (SG); a current value setting unit () for setting, as a current limiting value, an upper limit of a current output to the power/signal lines (SG) from the transmitter/receiver unit () when the pulse voltage is output; and a current control unit () for controlling the transmitter/receiver unit () to output a current having a value equal to or smaller than the current limiting value set by the current value setting unit (). Accordingly, it is possible to prevent a malfunction from occurring in communications irrespective of a scale of the fire alarm system.