Pen point position calibration method of electromagnetic input device and electromagnetic input device

Abstract

The invention provides a pen point position calibration method of an electromagnetic input device and the electromagnetic input device. The pen point position calibration method of the electromagneticinput device comprises the following steps that an electromagnetic pen is used for inputting on a handwriting board; a processing unit determines a pen energy voltage values received by the center points of the first to fifth antenna frames and the initial pen point position of the electromagnetic pen, the third antenna frame is an antenna frame with the maximum pen energy voltage value receivedby the center points in all the antenna frames, and the first to fifth antenna frames are sequentially and continuously arranged; the processing unit determines whether the electromagnetic pen is inclined or not according to the pen energy voltage values received by the central points of the first to fifth antenna frames and the positions of the central points; if the electromagnetic pen inclines,inclination compensation is conducted on the initial pen point position of the electromagnetic pen, otherwise, the initial pen point position of the electromagnetic pen serves as the actual pen pointposition of the electromagnetic pen, the inclination state of the electromagnetic pen can be accurately judged, and the pen point position recognized by the electromagnetic input device is calibratedaccording to the inclination state.

Description

technical field [0001] The invention relates to the technical field of electromagnetic input, in particular to a pen tip position calibration method of an electromagnetic input device and the electromagnetic input device. Background technique [0002] With the popularization of electronic devices such as smart phones, the writing habits of modern people have changed. The traditional method of using ink pens to write on paper to record information has gradually been replaced by electronic input, and people have gradually become accustomed to recording with electronic devices. information. [0003] Electromagnetic input technology is currently the most commonly used electronic input method. It has the characteristics of high precision, pressure sensitivity when handwriting, and does not affect the display effect of the display. Therefore, it is widely used in various electronic products such as handwriting computers, e-books, and handwriting LCD screens. middle. [0004] Exi...

AI Technical Summary

Problems solved by technology

And because the electromagnetic pen is inclined relative to the handwriting board when inputting, the input position corresponding to the electromagnetic coil of the electromagnetic pen is inconsistent with the input position corresponding to the pen tip of the electromagnetic pen. The problem that the input position is inconsistent with the display position affects the normal input of the user, resulting in poor user experience

Images