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:
Sep. 23, 1997
Filed:
Nov. 22, 1994
Toshikazu Morita, Tokyo, JP;
Nohmi Bosai Ltd., Tokyo, JP;
Abstract
A fire detecting apparatus is designed to have improved reliability by reducing the possibility that the apparatus is influenced by an environmental change, external noise or the like which would otherwise cause erroneous fire information to be sent to a receiving unit to generate a false alarm. The apparatus includes a light emitting device for detecting a physical quantity of a fire phenomena such as smoke, a light receiving device, an A/D conversion circuit, a RAM for successively storing a predetermined number of latest detection outputs from the A/D conversion circuit, an MPU for calculating deviations between the predetermined number of latest detection outputs stored in the RAM and for calculating an average value of at least two of the detection outputs having the smallest deviation, and a transmitting/receiving circuit for sending the average value calculated by the MPU as a physical quantity of the fire phenomenon,
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile