Electromagnetic multi-pen electronic whiteboard

An electronic whiteboard and electronic board technology, applied in the direction of electrical digital data processing, instrumentation, data processing input/output process, etc., can solve problems such as difficulties, achieve the effects of reducing difficulty, improving production efficiency, and high precision consistency

Inactive Publication Date: 2012-10-17
BEIJING REALLY SUN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the current technology is to use two pens at the same time, it is very difficult to continue to increase the number of pens

Method used

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  • Electromagnetic multi-pen electronic whiteboard

Examples

Experimental program
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Effect test

Embodiment Construction

[0009] In the figure, when a new detection period T starts, firstly, the main control circuit of the whiteboard sends out a synchronous start signal M, if the No. If the pen is operating on the whiteboard, it will send out electromagnetic waves at T2 time after receiving the synchronization signal; if the No. 3 pen is operating on the whiteboard, it will send out electromagnetic waves at T3 time after receiving the synchronization signal; After receiving the synchronous signal, it will send out electromagnetic waves at T4 time; if the eraser is operating on the whiteboard, it will send out electromagnetic waves at T5 time after receiving the synchronous signal. Because the main control circuit can determine which pen emits the electromagnetic wave through timing, it can conveniently assign different writing color attributes to different pens. This example just takes four pens and one blackboard eraser as illustration, is not limited to four pens when actually implementing.

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Abstract

The invention is applicable to an electronic whiteboard of an electronic induction technology. Technically, a mode that a pen is provided with an operation frequency is abandoned; multi-pen same-frequency time-sharing operation is adopted; specific working time is distributed to each pen; electronic pens are only allowed to work in the own specific time; and a system can determine a certain working pen according to data obtained at different time, so that multi-pen multi-color operation is implemented.

Description

Technical field [0001] The invention relates to an electronic whiteboard capable of writing with multiple color pens at the same time. technical background [0002] At present, multi-pen electronic whiteboards are divided into two categories. The first category is infrared whiteboards and camera-based electronic whiteboards. Although these two whiteboards can support two or more pens to write at the same time, the disadvantage is that the color attributes of all pens are the same at the same time, and it is impossible to write in different colors with different pens. The second type is the electromagnetic whiteboard, but at present it is possible to write with two pens at the same time. In order to realize the writing with two pens, the two pens use different frequencies to operate, which can solve the problem of supporting writing with two pens and two colors at the same time. However, the current technology is to use two pens at the same time, and it is very difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/046
Inventor 张昊吕冰朱立波
Owner BEIJING REALLY SUN
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