Electronic-whiteboard active pen and touch input system and driving method

Abstract

The invention relates to an electronic-whiteboard active pen and touch input system and a driving method. A microcontroller is arranged in the active pen; the electronic-whiteboard active pen comprises a key switch module, an amplifying circuit module and a high-voltage boosting module, and further comprises a pressure sensor nodule and a pen point module; the pen point module is used for transmitting a high-voltage driving signal treated by the high-voltage boosting module, the amplifying circuit module is used for amplifying a pressure signal collected by the pressure sensor module, and the key switch module is used for achieving the opening function and the closing function of a key. According to the electronic-whiteboard active pen and touch input system and the driving method, changes of the output of the pressure signal quantity are achieved by changing the deformation quantity of the active pen acting on an electronic whiteboard, real brushwork and lines are simulated according to the pressure signal, the active pen can sense changes of writing force of a user, and therefore the thickness of handwriting can be changed according to the changes of the writing force; a key-switch stage signal is sent by pressing a key switch on the active pen, free switching of the color of the writing handwriting is further achieved, and the human-computer interaction effect is good.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an electronic whiteboard active pen, a touch input system and a driving method thereof. Background technique [0002] As an emerging product, the electronic whiteboard is a high-tech product that integrates various high-tech means such as cutting-edge electronic technology and software technology. The electronic whiteboard can realize paperless office and teaching by using it in conjunction with a computer or a projector. It can be written directly like an ordinary whiteboard or a teaching blackboard. The advantage of the electronic whiteboard is that the human-computer interaction is good, and the operator can directly operate the documents and software on the electronic whiteboard, which is very convenient and intuitive. [0003] Currently, the stylus used on the touch screen of the electronic whiteboard mainly includes a passive pen and an active pen. Among them, the functi...

AI Technical Summary

Problems solved by technology

However, more and more applications require higher-precision touch, and it is difficult to write precisely and quickly on the screen due to thicker fingers

Moreover, the active pen writing in the prior art has no handwriting color switching function, which cannot well show the thickness and color beauty of the text lines, which greatly affects the user's operating experience

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