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:
Aug. 26, 2003
Filed:
Oct. 17, 2001
Masayuki Uno, Ina, JP;
Linear Cell Design Co., Ltd., , JP;
Abstract
The present invention relates to a weighted mean calculation circuit that comprises an inverting amplifier; a plurality of capacitors C through Cn connected to the input terminal thereof; switches SW through SWn that connect the capacitors C through Cn to the input and output terminals of the inverting amplifier; and a switch SW that is provided between the input and output of the inverting amplifier. A signal voltage is applied to respective capacitors while making the SW conductive when inputting a signal, and the capacitors C through Cn are connected in parallel between the input and output of the inverting amplifier while making the SW non-conductive when outputting a signal, whereby an output signal Vout is read, and a weighted mean value output that does not include any offset and is normalized as a normal polarity output can be obtained.