Paper screen synchronous pen point position information correction method

Abstract

The invention relates to the technical field of teaching aids, and discloses a paper screen synchronous pen point position information correction method, which comprises the following steps: straightening the position of an electromagnetic handwriting board, measuring the resolution of the electromagnetic handwriting board, measuring the width of a pen point of a handwriting pen, and measuring the distance from a sensor in the handwriting pen to the pen point. Based on the included angle and rotation angle information of the pen holder of the handwriting pen relative to the normal vector of the writing plane provided by the electromagnetic handwriting board at each sampling moment, the resolution of the electromagnetic handwriting board, the width of the pen point of the handwriting pen and the distance from a sensor in the handwriting pen to the pen point are utilized, and on the basis of the geometric position relation. And correcting the pen point position information sensed by the electromagnetic handwriting board. According to the paper screen synchronous pen point position information correction method, the pen point position information sensed by the electromagnetic handwriting board is corrected, so that the handwriting displayed on the display equipment is consistent with the handwriting written on the physical paper in position.

Description

technical field [0001] The invention relates to the technical field of teaching aids, in particular to a method for correcting position information of a paper-screen synchronous pen tip. Background technique [0002] With the rapid development of electronic information technology, paper screen synchronization has become possible. The so-called paper-screen synchronization means that when the user writes on ordinary paper with an ordinary pen, the electronic handwriting device senses the user's handwriting process in real time, and simultaneously displays the handwriting on the electronic device. Compared with traditional handwriting devices, the advantage of paper-screen synchronization is that it fully complies with the hand-eye coordination writing habit, that is, during the entire writing process, the user's visual feedback is brought by the traces left by the pen on the paper, while Instead of a traditional handwriting device, the visual feedback is generated by the scr...

AI Technical Summary

Problems solved by technology

Limited by the inherent technical characteristics of the electromagnetic type, this solution has the problem of inconsistent pen tip information

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