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:
Mar. 10, 2015
Filed:
Jun. 07, 2009
Cho-yi Lin, Hsinchu, TW;
Hsin-chi Cheng, Hsinchu, TW;
Chih-hung LU, Hsinchu, TW;
Yi-hsien Ko, Hsinchu, TW;
Cho-Yi Lin, Hsinchu, TW;
Hsin-Chi Cheng, Hsinchu, TW;
Chih-Hung Lu, Hsinchu, TW;
Yi-Hsien Ko, Hsinchu, TW;
Pixart Imaging Inc., Hsinchu, TW;
Abstract
In a variable size sensing system and a method for redefining the size of a sensing area thereof, the sensing system includes four elements, a mark and two image sensing devices. The four elements are consecutively connected and thereby forming a frame. Two of the four elements have variable lengths so as to adjust the size of the frame. The inner edge of the frame defines a sensing area of a parallelogram shape. The sensing system has a first and a second working mode. The sensing area has a first size and a second size when the sensing system is in the first working mode and the second working mode respectively, wherein the first size is predetermined and smaller than the second size. The mark is used to mark a fixed length. When the sensing system is changed from the first working mode to the second working mode, the mark sensed by the image sensing devices can be utilized to redefine the size of the sensing area in the sensing system.