Method and apparatus for writing on touch screen by intelligent pen, and intelligent pen

Abstract

The invention discloses a method for writing on a touch screen by an intelligent pen. The method comprises the steps of recording a moment point and coordinates of initial contact between the intelligent pen and the touch screen, and from the moment point of the initial contact, starting to receive a relative displacement sent by the intelligent pen at a preset sampling frequency; according to the coordinates of the initial contact and the relative displacement of the intelligent pen, obtaining touch point coordinates at a current moment; and then displaying a writing trace of the intelligent pen on the touch screen according to the touch point coordinates at the current moment. According to the method, accurate writing on the touch screen can be realized; the shortcomings of relatively low accuracy and relatively poor writing experience of touch pen type writing and finger type writing are overcome; and both the intelligent pen and the touch screen send data according to a protocol of an operation system, so that the problem that the intelligent pen and the touch screen need to be developed in a matched way does not exist, the compatibility is better, and large-scale production is facilitated.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method and device for writing on a touch screen with a smart pen and the smart pen. Background technique [0002] Existing display terminal devices with a touch writing function generally use a touch pen or finger to write. Because the nib and fingers of the touch pen are relatively large and the precision is low, it does not bring people a good writing experience. However, the nib of the existing smart pen is small, but when writing with the touch screen, it is necessary to receive the touch screen data through the smart pen, then integrate the relative displacement information, and then send it to the PC or other hosts. This makes the smart pen less compatible. Contents of the invention [0003] The purpose of the embodiment of the present invention is to provide a method and device for writing with a smart pen on a touch screen, which can effectively overcome the pro...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a method and device for writing with a smart pen on a touch screen, which can effectively overcome the problem of low writing accuracy of the existing touch screen, and does not need to cooperate with a specific touch screen to develop a smart pen, with low cost and better compatibility

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