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:
Feb. 28, 2012
Filed:
Dec. 16, 2009
Chih-ming Liao, Taoyuan, TW;
Ting-wei Chiang, Banciao, TW;
Chun-hao Chen, Tucheng, TW;
Yi-yuh Hwang, Taoyuan, TW;
Shin-i MA, Longtan Township, Taoyuan County, TW;
Wen-cheng Huang, Taipei, TW;
Chin-der Hwang, Jhubei, TW;
Mau-ran Wang, Taipei, TW;
Chih-Ming Liao, Taoyuan, TW;
Ting-Wei Chiang, Banciao, TW;
Chun-Hao Chen, Tucheng, TW;
Yi-Yuh Hwang, Taoyuan, TW;
Shin-I Ma, Longtan Township, Taoyuan County, TW;
Wen-Cheng Huang, Taipei, TW;
Chin-Der Hwang, Jhubei, TW;
Mau-Ran Wang, Taipei, TW;
Abstract
A highly sensitive movable touchpad is disclosed in the present invention. It is used for laptop computers and has a slidable template for users to move so that a cursor can be controlled by the touchpad. A resistive or capacitive detecting surface can be applied for detecting users' click, double click, drag, or scroll motion on any point of the surface. Additionally, there is an optical displacement sensor provided under the slidable template for detecting surface information on the back surface of the slidable template. A sequence of images of surface movement are processed by an image processing unit. Then, relative movement information is calculated and sent to an operating system in the computer. The operating system controls the cursor with the relative movement information. The present invention uses edge detectors for dynamically controlling the cursor and calibrating location of the cursor so that positioning of the touchpad is synchronous with the cursor.