Pressure compensation method and system of electromagnetic pen and terminal

A pressure compensation, electromagnetic pen technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve problems such as strokes of different thicknesses, achieve smooth writing, improve user experience, and improve consistency. Effect

Active Publication Date: 2014-03-26
深圳市经纬科技有限公司
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  • Abstract
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a handwriting pressure calibration of an electromagnetic pen that can make the handwriting consistent with the same

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  • Pressure compensation method and system of electromagnetic pen and terminal
  • Pressure compensation method and system of electromagnetic pen and terminal
  • Pressure compensation method and system of electromagnetic pen and terminal

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[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0042] Such as figure 1 As shown, the pressure compensation method of the electromagnetic pen in the embodiment of the present invention includes the following steps:

[0043] S101. Perform different pressure sampling on the standard electromagnetic pen, obtain the relationship between different sampling pressures, sampling frequencies and sampling line widths, generate and store a standard pressure-frequency-line width table;

[0044] The electromagnetic pen with the best user experience can be selected first for raw data collection. Usually people write about 80 grams of force. In order to comp...

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Abstract

The invention discloses a pressure compensation method and system of an electromagnetic pen and a terminal. The pressure compensation method comprises steps of sampling different pressure of the standard electromagnetic pen, and generating and storing a pressure-frequency-line width table of the standard electromagnetic pen; performing pressure correction on the electromagnetic pen to be detected, calculating compensation frequency difference, and generating and storing a pressure frequency difference table of standard pressure-corrected frequency range-compensation frequency difference-line width; detecting actual frequency of the electromagnetic pen used by users to perform writing actually, and performing frequency compensation according to the pressure frequency difference table; matrixing the compensated frequency to obtain a corresponding line width value to display right line width. By means of the method and system, writing problems caused by errors of different electromagnetic pen elastic systems are solved, users can write smoothly with the electromagnetic pen in different hardness, and consistency of handwriting and user experience are improved.

Description

technical field [0001] The invention relates to the field of electromagnetic pens, in particular to a pressure compensation method, system and terminal for an electromagnetic pen. Background technique [0002] With the advancement of smart phones, there is now a mobile phone with an electromagnetic screen. Different from the usual resistive and capacitive touch screens, the electromagnetic screen needs to cooperate with the electromagnetic pen to complete the input, and it is the original handwriting input. [0003] The core circuit of the electromagnetic pen is a micropower transmitter with a transmission frequency around 400kHz. An LC oscillator constitutes an oscillating circuit. When writing, the physical displacement of the pen tip and the connected inductance iron core changes the inductance, and finally changes the frequency of the LC oscillator. The role of the electromagnetic screen is similar to the antenna array, which can receive the signal of the electromagneti...

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Application Information

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IPC IPC(8): G06F3/0354
Inventor 吴明杰
Owner 深圳市经纬科技有限公司
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