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:
Jan. 12, 2016
Filed:
Apr. 18, 2013
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-Fu, JP;
Eiji Takahashi, Nagaokakyo, JP;
Noriaki Okuda, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu, JP;
Abstract
An amplifier circuit includes first and second amplification units. A first detection electrode and a high impedance circuit are connected to the input terminal of the first amplification unit. A second detection electrode and a high impedance circuit are connected to the input terminal of the second amplification unit. The output terminals of the first and second amplification units output first and second output signals, and are connected to the input terminals of a differential amplifier circuit through coupling capacitors, respectively. The differential amplifier circuit operates a difference between the first and second output signals in a state where a direct-current component is omitted.