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. 07, 2014
Filed:
Dec. 21, 2009
Song-ling Yang, Shenzhen, CN;
Song-Ling Yang, Shenzhen, CN;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A rotation sensing device comprises a capacitor module comprising an upper substrate and a lower substrate. The upper substrate comprises a plurality top plates mounted thereon, and the lower substrate comprises a plurality bottom plates mounted thereon. A pointing module comprises a pointer rotatably set between an upper substrate and a corresponding lower substrate. The pointer comprises a first portion. A detection circuit is electronically connected to the top plates and the bottom plates, and is configured for detecting pulses caused by a change of the capacitance resulting from movement of the first portion, determining a position change of the first portion relative to the initial position according the detected pulses, and determining a rotation orientation of the capacitor module according to the determined position change.