Electronic pen used for interactive electronic whiteboard

Abstract

The invention relates to an electronic pen used for an interactive electronic whiteboard, which comprises a casing, wherein an electromagnetic wave generation device or a code generation circuit and a code transmission circuit are arranged inside the casing. The electronic pen used for the interactive electronic whiteboard also comprises a plurality of electromagnetic wave switches arranged on the casing, wherein each electromagnetic wave switch corresponds to one of a writing function, an eraser function, a mouse left-button function and a mouse right-button function of the interactive whiteboard and is used for respectively generating different oscillation frequencies in an electromagnetic oscillation circuit formed by respectively connecting a capacitor and an inductor in series, a starting/writing key or a right button is used for triggering starting, and a touch control switch of the oscillation circuit is connected with a penpoint; and the interactive electronic whiteboard detects one of the writing function, the eraser function, the mouse left-button function or the mouse right-button function on a position in which the electronic pen is arranged according to the oscillation frequency of the received electromagnetic wave signal transmitted by the electronic pen. By the electronic pen, the switching operation of the common functions of an interactive demonstration system is simpler, the use is convenient, and the remote operation can be realized.

Description

technical field [0001] The present invention relates to an electronic pen, more specifically, to an electronic pen used for an interactive electronic whiteboard. Background technique [0002] In recent years, interactive electronic whiteboards using electromagnetic induction technology have appeared. This type of electromagnetic induction interactive electronic whiteboard can detect the position information written by the electronic pen, and can transmit the information to the connected computer. The position information and The computer screen images are integrated and projected onto the interactive electronic whiteboard through the projector, thus forming a complete interactive presentation system. Users can easily use the electronic pen to edit, modify, and mark the contents of the computer screen on the interactive electronic whiteboard, just like using a mouse to directly operate the computer. [0003] For example, the Chinese patent 02225001.8 "Electromagnetic Electro...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an electronic pen for interactive electronic whiteboards, whi

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