Infrared touch screen performance improving structure and method

Application Number: 00121462
Application Date: 2000.07.24
Publication Number: 1335548
Publication Date: 2002.02.13
Priority Information:
International: G06F3/02
Applicant(s) Name: Beijing Huiguan Science &. Technology Co., Ltd.
Address:
Inventor(s) Name: Liu Jianjun;Liu Xinbin
Patent Agency Code: 00000
Patent Agent:
Abstract The present invention is mainly inserting one A/D converting link in the photoelectronic signal channel to realize the predetection of the monochip computer system to the photoelectronic element performance and the data normalization in touch judging process, with the data being provided to curve-fitting touth point calculating module. At the same time, one digital controlled gain link is inserted into the same channel to constitute with the monochip computer system one gain controlling loop. Based on the predetection result, the gain is regulated and normalized and this can make up the performance difference of elements and prolong the service life.