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:
Jun. 19, 2012
Filed:
Mar. 21, 2010
Wang-an HU, Shanghai, CN;
Jian-jun Liu, Shanghai, CN;
LI Sun, Shanghai, CN;
Kuo-wei Hung, Taipei Hsien, TW;
Rong LI, Shanghai, CN;
Wang-An Hu, Shanghai, CN;
Jian-Jun Liu, Shanghai, CN;
Li Sun, Shanghai, CN;
Kuo-Wei Hung, Taipei Hsien, TW;
Rong Li, Shanghai, CN;
Ambit Microsystems (Shanghai) Ltd., Shanghai, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, New Taipei, TW;
Abstract
A key assembly used in an electronic device includes a printed circuit board (PCB) including two optical couplers, a key body and a supporting assembly. The key body is rotatably supported on the PCB and includes a circular disk and a plurality of teeth. The plurality of teeth extend from periphery edge of the circular disk toward the PCB and are spaced apart from each other. The supporting assembly supports the key body on the PCB. When the key body is rotated, the plurality of teeth interact with the two optical couplers to generate one or more control signals to control corresponding one or more operations of the electronic device.