| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a coordinate positioning device and method for removing noise. <P>SOLUTION: The coordinate positioning device and method for detecting the coordinates of a contact point even in an environment of periodic noises is disclosed to firstly obtain a first and a second sampling values of the contact point at a first time point and a second time point, next to determine if the absolute value of the difference between the first sampling value and second sampling value is smaller than a first threshold value; if not, to neglect the contact point; if yes, to obtain a third sampling value of the contact point at a third time point, to determine if the absolute value of the difference between the first sampling value and the third sampling value is smaller than a second threshold; if not, to neglect the contact point, and if yes, to obtain the coordinate value of the contact point by using the mean value of the first and second sampling values. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
