Electronic pen

Abstract

The embodiment of the invention discloses an electronic pen. The electronic pen comprises a trigger circuit and an electromagnetic oscillation circuit, wherein the electromagnetic oscillation circuit comprises a control element with on-off function and a combination of more than two types of electromagnetic oscillation elements; and the trigger circuit comprises a conducting element with a changeable resistance value. The on-off state of the control element can be controlled by changing the resistance value of the conducting element, and different combinations of the electromagnetic oscillation elements can be obtained through the on-off state of the control element. Therefore, the electronic pen provided by the embodiment of the invention has a longer service life.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an electronic pen used in an electronic writing system. Background technique [0002] With the development of electronic technology and the popularization and application of projection technology, various forms of electronic writing devices have emerged in recent years, such as electronic handwriting boards and electronic whiteboards. Electronic whiteboards include electromagnetic induction electronic whiteboards and infrared electronic whiteboards. Electronic writing devices are provided with electronic pens for writing on electronic whiteboards or electronic writing boards and operating various functions. [0003] The existing electronic pen is generally an electronic pen with electromagnetic induction. When the electronic pen is writing or doing other operations on the electronic whiteboard, the electromagnetic wave generated by the electronic pen will generate an induced ...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the switch in the electromagnetic oscillating circuit of the electronic pen is generally a mechanical switch. The mechanical switch must be touched every time writing, and the oscillation frequency is changed through the on-off state of the mechanical switch, so as to meet the requirements of various functions. However, if the mechanical switch on the electronic pen is often turned on and off, there will be a problem of poor contact, which will cause the electronic pen to not work normally, so the service life of the existing electronic pen is generally short

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