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. 02, 2007
Filed:
Jun. 06, 2006
Masahiro Yokotani, Tokyo, JP;
Naoki Hiraoka, Tokyo, JP;
Masahiro Yokotani, Tokyo, JP;
Naoki Hiraoka, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnetic detection apparatus is able to make a selection between AC coupling and DC coupling thereby to improve the accuracy of a final output signal corresponding to a magnetic movable element, thus making it possible to ensure excellent detection performance. The magnetic detection apparatus with a sensor composed of magnetoresistive elements () for detecting the strength of a magnetic field includes a first comparison circuit () that has a first comparison level (VR), and waveform shapes the amplitude of a detection signal (C) from the magnetoresistive elements () through DC coupling, a second comparison circuit () that has a second comparison level (VR), and waveform shapes the amplitude of the detection signal C through DC coupling, and a third comparison circuit () that has a third comparison level VR, and waveform shapes the amplitude of the detection signal C after AC coupling.