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Radio positioning electronic white board using flat panel display as writing plane

A flat-panel display, wireless positioning technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc. fading effect

Inactive Publication Date: 2007-10-17
CHANGCHUN JIDA SCOLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention provides a wireless positioning electronic whiteboard using a flat panel display as a writing plane to solve the problem of inaccurate positioning caused by the signal processor being unable to accurately obtain the arrival time of ultrasonic signals due to the continuous emission of infrared rays and surface heating of the flat panel display during its operation.

Method used

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  • Radio positioning electronic white board using flat panel display as writing plane
  • Radio positioning electronic white board using flat panel display as writing plane
  • Radio positioning electronic white board using flat panel display as writing plane

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Embodiment Construction

[0036] As shown in Figure 2, the present invention is made up of following parts: launch pen 206, panel display frame 201, left signal receiver 202, right signal receiver 203, signal processor 204, in order to make the system work normally, need PC 208 and As the flat panel display 205 of writing plane and PC machine 208 display, signal processor 204 is connected with PC through USB data line 207, flat panel display is connected with PC through VGA data line 209, and flat panel display is connected with flat panel display frame 201.

[0037] The structure of the launching pen 210 is the same as that used in ordinary ultrasonic infrared positioning electronic whiteboards. Such as:

[0038] The launch pen includes parts such as pen case, pen core, membrane switch assembly, battery, circuit board, ultrasonic and infrared emission sensors and their mounts, all of which are installed in the pen case.

[0039] The mounting seat of the ultrasonic and infrared emission sensor is instal...

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PUM

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Abstract

The present invention relates to a wireless position electronic white board choosing a flat panel display as write plane and relates to an electronic white board using ultrasound infrared position technology. The white board includes an ultrasound infrared signal radiating pen, a receiver and a signal processor. The signal processor includes a microprocessor which is connected to a variable gain amplifier, a pulse shaping circuit and a pulse synthesizing circuit. A peak holding apparatus is connected to the signal processor. The advantages of the invention are that: in the radiating pen, the infrared emission signal is processed by special treatment, the receive processor can filter the influence of the infrared noise; in the receive processing circuit for the ultrasound signal, the adaptive control technology is adopted to resist the decline during the spread process of the ultrasound signal, and the flat panel display can used as write plane.

Description

technical field [0001] The invention relates to an electronic whiteboard using ultrasonic infrared positioning technology, in particular to a wireless positioning electronic whiteboard using a flat-panel display-like medium with strong infrared noise and fading ultrasonic signals as a writing plane. Background technique [0002] The electronic whiteboard can record the movement trajectory of the pen on the whiteboard (or other writing plane) during the writing process, so as to obtain the written content, and can transmit the written content to other devices such as computers and printers through the communication bus. [0003] The electronic whiteboard adopting the ultrasonic infrared positioning technology generally includes two parts of a transmitting pen 105 and a signal receiving processor 101, wherein the signal receiving processor 101 is composed of a left signal receiver 102, a right signal receiver 103 and a signal processor 104, in order to make the system To work ...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/043
Inventor 王树勋郭纲陈建孙晓颖胡封晔燕学智王波温泉魏小丽
Owner CHANGCHUN JIDA SCOLA
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