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:
Dec. 01, 2009
Filed:
Jul. 20, 2007
Dong-rak Lee, Busan, KR;
Jae-woo Park, Gyeongsangnam-do, KR;
Bong-geun Cho, Busan, KR;
Hyoung-jun Moon, Busan, KR;
Dong-Rak Lee, Busan, KR;
Jae-Woo Park, Gyeongsangnam-do, KR;
Bong-Geun Cho, Busan, KR;
Hyoung-Jun Moon, Busan, KR;
S & T Daewoo Co., Ltd., Busan, KR;
Abstract
The present invention relates to a sensor module for detecting a relative displacement of an object having a groove pattern with alternately formed projection and depression, which comprises a magnet for generating a magnetic field; a giant magneto resistance (GMR) sensor installed between the magnet and the object to detect a variation in the magnetic field and output an electric signal; a signal processing part for processing the output signal from the GMR sensor to output a square wave; and a housing for supporting the magnet, the GMR sensor and the signal processing part, and a method of detecting a moving direction using the same.