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:
Oct. 25, 2011
Filed:
Nov. 05, 2009
Tatsuya Yamamoto, Chigasaki, JP;
Tsuneo Suzuki, Kamakura, JP;
Yuusuke Maeda, Kawasaki, JP;
Souichi Honma, Fujisawa, JP;
Tatsuya Yamamoto, Chigasaki, JP;
Tsuneo Suzuki, Kamakura, JP;
Yuusuke Maeda, Kawasaki, JP;
Souichi Honma, Fujisawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A comparator circuit according to an embodiment of the present invention includes a comparator configured to compare an input signal voltage with a reference voltage obtained by smoothing the input signal by use of a resistor and a capacitor, and output a result of the comparison, a discharge circuit configured to compare a first addition signal which is obtained by adding a positive first voltage to the input signal voltage, with the reference voltage, and discharge the capacitor when the first addition signal is lower than the reference voltage, and a charge circuit configured to compare a second addition signal which is obtained by adding a negative second voltage to the input signal voltage, with the reference voltage, and charge the capacitor when the second addition signal is higher than the reference voltage.