Linear processing method and system of coordinates of touched point at marginal area of touch screen

Abstract

The invention is suitable for the technical field of touch sensing and provides linear processing method and system of coordinates of a touched point at the marginal area of a touch screen, wherein the method comprises the following steps of: a. calculating initial coordinates of the touched point according to capacitance matrix data around the touched point; b. inputting the initial coordinates into a linear processing model which is established in advance and obtaining actual coordinates of the touched point, wherein the linear processing model contains functional relation information of the actual coordinates and the initial coordinates of the touched point; and c. responding the touching operation of a user at the position of the actual coordinates. When the marginal area of the touch screen is touched, the initial coordinates of the touched point, which are obtained by calculation according to the capacitance matrix data around the touched point, are input into the linear processing model to be carried out linear processing, and the actual coordinates of the touched point are obtained according to the functional relation information of the actual coordinates and the initial coordinates of the touched point in the model, therefore, the distortion is avoided when the coordinates of the touched point at the marginal area of the touch screen are calculated.

Description

technical field [0001] The invention belongs to the technical field of touch sensing, and in particular relates to a linear processing method and system for coordinates of touched points in the edge area of ​​a touch screen. Background technique [0002] Capacitive touch screens are more and more applied to many electronic products. The basic method of realizing the coordinates is: setting a sampled capacitance matrix on the screen, and using a certain algorithm to calculate the coordinates of the touched point. When a point in the central area of ​​the screen is touched, such as figure 1 In A1, in order to ensure that the coordinates of A1 can be accurately calculated, the data of each adjacent point around it will participate in the calculation, but since the capacitance matrix must be smaller than the physical size of the screen, when a point in the edge area of ​​the touch screen is touched, such as figure 1 In A2, the data of the adjacent points of the touched point is...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a linear processing method and system for the coordinates of touched points in the edge area of ​​the touch screen, aiming at solving the problem of easy distortion when calculating the coordinates of touched points in the edge area of ​​the touch screen

Images