公开(公告)号：US07170017B2

公开(公告)日：2007-01-30

申请号：US10801061

申请日：2004-03-15

申请人： Wu-Chung Chiang ,  Ching-Haur Chang ,  Chen Kun Kuo ,  Pei Cheng Lee

发明人： Wu-Chung Chiang ,  Ching-Haur Chang ,  Chen Kun Kuo ,  Pei Cheng Lee

IPC分类号： G09G5/00 ,  G06K11/06

CPC分类号： G06F3/041 ,  G06F3/03545 ,  G06F3/044 ,  G06F3/045 ,  G06F3/046 ,  G06F3/047

摘要： The invention relates to a coordinate detecting method for a touch panel. Firstly, a plurality of X-axis and Y-axis I/O ports are converted to a plurality of X-axis and Y-axis scanning wires respectively by orthogonal method. Polling signals are transmitted to X-axis I/O ports, and are transmitted to the X-axis scanning wires. According to the polling signals, a plurality of X-axis detection signals are stored. A largest X-axis detection signal and a second largest X-axis detection signal are determined by compared method so as to calculate a X coordinate position of the sensor pen touching the touch panel. The steps are repeated to calculate the Y coordinate position of the sensor pen touching on the touch panel. According to the coordinate detecting method of the invention, the number of the I/O ports can be reduced, and the resolution of the touch panel can be improved. For the calculation method, the invention utilizes simple compared method to obtain the largest detection signal and the second largest detection signal so as to calculate the coordinate position of the sensor pen touching on the touch panel. Therefore, the coordinate detecting method of the invention is very simple and rapid.

摘要翻译： 本发明涉及触摸面板的坐标检测方法。 首先，通过正交方式分别将多个X轴和Y轴I / O端口转换为多个X轴和Y轴扫描线。 轮询信号传输到X轴I / O端口，并传输到X轴扫描线。 根据轮询信号，存储多个X轴检测信号。 通过比较方法确定最大的X轴检测信号和第二最大X轴检测信号，以计算传感器笔接触触摸面板的X坐标位置。 重复步骤以计算触摸面板上的传感器笔的Y坐标位置。 根据本发明的坐标检测方法，可以减少I / O端口的数量，并且可以提高触摸面板的分辨率。 对于计算方法，本发明利用简单的比较方法获得最大检测信号和第二大检测信号，以便计算传感器笔在触摸面板上的坐标位置。 因此，本发明的坐标检测方法非常简单快速。