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1. 发明申请

US20110234540A1 BACKGROUND IMAGE UPDATING METHOD AND TOUCH SCREEN 审中-公开
标题翻译：背景图像更新方法和触摸屏
公开(公告)号：US20110234540A1
公开(公告)日：2011-09-29
申请号：US12979287
申请日：2010-12-27
申请人： Chiou-Tzung LIOU , Ting-Hsuan Chang , Ru-Yi Tsai , Tang-Wei Hsu , Chia-Ho Chen
发明人： Chiou-Tzung LIOU , Ting-Hsuan Chang , Ru-Yi Tsai , Tang-Wei Hsu , Chia-Ho Chen
IPC分类号： G06F3/042
CPC分类号： G06F3/0428
摘要： A background image updating method is adapted to a touch screen including a first and a second image modules. A first and a second images are captured by the first and the second image modules as a first and a second background images, respectively. (a) Whether an absolute value of a brightness difference between a third image captured by the first image module and the first background image is greater than a predetermine value is compared. (b) If the result of the step(a) is yes, whether an absolute value of a brightness difference between a fourth image captured by the second image module and the second background image is greater than another predetermine value is compared. (c) If the result of the step(b) is yes, a fifth and a sixth images are captured by the first and the second image modules as the first and the second background images, respectively.
摘要翻译：背景图像更新方法适用于包括第一和第二图像模块的触摸屏。第一和第二图像分别被第一和第二图像模块捕获为第一和第二背景图像。（a）比较由第一图像模块拍摄的第三图像与第一背景图像之间的亮度差的绝对值是否大于预定值。（b）如果步骤（a）的结果为是，则比较由第二图像模块捕获的第四图像与第二背景图像之间的亮度差的绝对值是否大于另一个预定值。（c）如果步骤（b）的结果为是，则分别由第一和第二图像模块捕获第五和第六图像作为第一和第二背景图像。

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