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:
Apr. 20, 2010
Filed:
Feb. 06, 2006
Hidetoshi Nishikawa, Kyoto, JP;
Hidetoshi Nishikawa, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A Hall element outputs a Hall voltage generated at a first terminal pair or a second terminal pair to first and second output terminals by switching the voltage in a first status and a second status. Based on the voltages of the first and the second output terminals and a reference voltage, first and second capacitors are charged. Then, the voltages of the first and the second capacitors are compared, and a detection signal is obtained. Thus, a magnetic sensor circuit which reduces influence of an element offset voltage of the Hall element and also reduces influence of an input offset voltage generated at an amplifier, and a portable terminal provided with such magnetic sensor circuit are provided.