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. 05, 2017
Filed:
Mar. 25, 2014
Jie Zheng, Nagoya, JP;
Ryo Ito, Nagoya, JP;
Kenji Kanazawa, Tsukuba, JP;
Osamu Takahashi, Nagoya, JP;
Jie Zheng, Nagoya, JP;
Ryo Ito, Nagoya, JP;
Kenji Kanazawa, Tsukuba, JP;
Osamu Takahashi, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
To detect humidity, used are a first series connection circuit connecting a thermistor and a fixed resistor via a node, a second series connection circuit connecting a resistance change type humidity sensor and the thermistor via the node, and a third series connection circuit connecting the humidity sensor and the fixed resistor via the node. A predetermined voltage is applied across the first circuit to detect a first voltage indicating temperature through the node, and secondly across the second circuit to detect a second voltage indicating a first humidity through the node, and finally across the third circuit to detect a third voltage indicating a second humidity through the node. Then, the first voltage is compared with a reference voltage and judgment is made, based on a comparison result, to determine which of the second voltage and the third voltage is relevant to use as a basis for outputting the humidity as detected.