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. 06, 2013
Filed:
Jun. 20, 2008
Hidetoshi Nishikawa, Kyoto, JP;
Hidetoshi Nishikawa, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A magnetic sensor circuit of the present invention includes: a Hall device; selection switch circuitswitching a detection state of the Hall deviceto either a first switch state or a second switch state; a comparator unitperforming comparison using a detection voltage of a magnetoelectric conversion deviceaid a predetermined reference voltage to generate a comparison result signal COUT; a logic circuitgenerating, based on an output signal OUT and the comparison result signal COUT, a logic operation signal LOUT for maintaining or inverting the logic of the output signal OUT; a latch circuitlatching the logic operation signal LOUT to output this as the output signal OUT; and a control circuit go determining, based on the output signal OUT, an order of switching the detection state of the Hall device(from the first switch state to the second switch state, or from the second switch state to the first switch state).