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. 16, 2011
Filed:
Jul. 03, 2008
Sung Sik Lee, Milyang, KR;
Ji Man Park, Daejeon, KR;
Myung Lae Lee, Daejeon, KR;
Sung Hae Jung, Daejeon, KR;
Chang Han Je, Daejeon, KR;
Gunn Hwang, Seoul, KR;
Chang Auck Choi, Daejeon, KR;
Sung Sik Lee, Milyang, KR;
Ji Man Park, Daejeon, KR;
Myung Lae Lee, Daejeon, KR;
Sung Hae Jung, Daejeon, KR;
Chang Han Je, Daejeon, KR;
Gunn Hwang, Seoul, KR;
Chang Auck Choi, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
There is provided a bidirectional readout circuit for detecting direction and amplitude of an oscillation sensed at a capacitive microelectromechanical system (MEMS) accelerometer, the bidirectional readout circuit converting capacitance changes of the capacitive MEMS accelerometer into a time change amount by using high resolution capacitance-to-time conversion technology and outputting the time change amount as the direction and the amplitude of the oscillation by using time-to-digital conversion (TDC) technology, thereby detecting not only the amplitude of the oscillation but also the direction thereof, which is capable of being applied to various MEMS sensors.