CN103336633A

CN103336633A - Electronic white board

Info

Publication number: CN103336633A
Application number: CN2013102119167A
Authority: CN
Inventors: 傅有军
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-10-02

Abstract

The invention relates to an electronic white board. Two-dimensional invisible identification codes are arranged on a silver screen, a camera at the front end of a writing pen shoots the two-dimensional invisible identification codes corresponding to a writing track; an IC (Integrated Circuit) mounted on the writing pen converts the shot two-dimensional invisible identification codes into a corresponding digital signal; the digital signal is transmitted to a wireless receiving device of a computer by a wireless transmitting device of the writing pen; the digital signal received by the wireless receiving device is converted into a track diagram; and the track diagram is projected on the silver screen by a projector connected with the computer. According to the electronic white board, the writing track of the writing pen on the silver screen corresponds to the different two-dimensional invisible codes shot by the camera; and a written letter or figure can be seen on the silver screen; and the processes are accomplished in one hundredth of second and a fraction of second, so that the processes seen by naked eyes seem to be synchronous.

Description

A kind of electronic whiteboard

Technical field

The present invention relates to electronic technology field, relate in particular to a kind of mutual electronic whiteboard technology of medium that is applied to.

Background technology

Electronic whiteboard is the new high-tech product that has compiled multiple high-tech means research and development such as most advanced and sophisticated electronic technology, software engineering, and it in conjunction with computing machine and projector, can realize with no paper office and teaching by using electromagnetic induction principle.Electronic whiteboard is developed by common blank, and the electronic whiteboard of Chu Xianing is duplicating type electronic whiteboard the earliest, along with the development of technology and the needs in market, interactively electronic whiteboard occurred.This two kinds of electronic whiteboards and depositing in the market below are introduced this two electron-likes blank respectively.

So-called duplicating formula electronic whiteboard namely just can scan content written on the blank and print by certain mode by user's simple operations.Its function complete process is the same with common duplicating process, at first by image sensing device the content on the blank is gathered, after the collection signal is handled through certain image, at last with temperature-sensitive, ink-jet or the output of other printing types.The paper of output is generally the A4 breadth.The image sensing device of this electronic whiteboard generally is CCD, and scan mode adopts CCD block motion or blank film to move two kinds.The printout mode generally has heat-sensitive paper output and the output of ink-jet common paper, and two kinds of black and white and colored outputs are arranged on the color, and the copy function of duplicating the formula electronic whiteboard does not have too big practicality in fact.

Interactive electric whiteboard can carry out information communication with computer, electronic whiteboard is connected to PC, and utilize projector that the content on the PC is projected on the electronic whiteboard screen, interactive electric whiteboard is also supported to duplicate, electronic whiteboard directly is connected with printer, carry out writing on the blackboard by specific blank pen, when needing to print, only need to realize colour or black and white printing by the printing key on the lower panel.Can also use as the PC blank, electronic whiteboard is linked to each other with PC, the electronic whiteboard of this moment just is equivalent to a king-sized handwriting pad of area, can write arbitrarily in the above, paint and instant showing at PC, and file saves as graphic file.Interactive electric whiteboard is according to principle of work and use difference to mainly contain two kinds: (1) electromagnetic type blank: the principle of work of electromagnetic-type electronic blank is the induction point by the blank back, senses the signal that the special electromagnetic pen sends.Thereby reach the location, the function of signal identification.Advantage is that the location is accurate, can carry out writing on the blackboard on the picture of projection, writes the operation of annotations and comments and so on accuracy literal class.Shortcoming is to realize the hand touch-control.(2) infrared type blank: the principle of infrared blank is to reach locating effect by the infrared frame that makes a circle in blank week.Infrared frame sends signal from X-axis and Y-axis, receives on one side in addition.If blocked by finger, then can sense the position of touch of finger, thereby reach the effect of location, the accurate writing effect of writing on the blackboard can not be provided, necessary stroke in the time of hand-written, wrist or other objects enter infrared frame scope and then can cause maloperation simultaneously.High light disturbed before the infrared exoelectron blank can be received screen simultaneously.

Summary of the invention

In order to overcome the problems referred to above that existing electronic whiteboard exists, the invention provides a kind of electronic whiteboard fast, that synchronous effect is good that throws.

The technical scheme that the present invention adopts for achieving the above object is: a kind of electronic whiteboard, screen is provided with the two-dimensional invisible identification code, the camera of lettering pen front end is taken the two-dimensional invisible identification code of handwriting trace correspondence, the IC that is installed on the lettering pen converts the two-dimensional invisible identification code that photographs to corresponding digital signal, described digital signal sends to the radio receiver of computer by the wireless launcher of lettering pen, the digital signal that radio receiver receives is converted to trajectory diagram, described trajectory diagram by the projector projects that is connected with computer to screen.

Described screen is white screen, stamps the position that different two-dimensional invisible identification codes represents each point by white art paper, covers the inferior film of one deck on the white art paper.

The camera of the stealthy sign indicating number of described identification is installed on the front end of lettering pen, and written IC is installed on the stage casing of lettering pen, and wireless launcher is installed on the back segment of lettering pen.

Electronic whiteboard of the present invention, the different two-dimensional invisible code correspondence that the track that lettering pen is write in screen and camera are taken the photograph, in screen, just can see literal or the figure of writing, this process is finished between second to part at centisecond, and what people's naked eyes were seen similarly is synchronous.

Description of drawings

Fig. 1 is the schematic diagram of electronic whiteboard of the present invention.

Embodiment

A kind of electronic whiteboard of the present invention, screen is provided with the two-dimensional invisible identification code, the camera of lettering pen front end is taken the two-dimensional invisible identification code of handwriting trace correspondence, the IC that is installed on the lettering pen converts the two-dimensional invisible identification code that photographs to corresponding digital signal, described digital signal sends to the radio receiver of computer by the wireless launcher of lettering pen, the digital signal that radio receiver receives is converted to trajectory diagram, described trajectory diagram by the projector projects that is connected with computer to screen.Projection screen is white screen, and is identical with common projection screen size, and it is to stamp the position that numerous different two-dimensional invisible identification code represents each point by white art paper, is covered with the inferior film of one deck above again; The lettering pen front end has the camera of the stealthy sign indicating number of identification, and there is a written IC in the stage casing, and back segment has a wireless launcher.Computer is that common computer adds that radio receiver adds software kit.The projector that projector can adopt student classroom to use.

The course of work is as follows: the different two-dimensional invisible code correspondence that the track that lettering pen is write in screen and camera are taken the photograph, an IC converts different stealthy sign indicating numbers to each self-corresponding digital signal, is launched by wireless launcher again.Signal receives by the radio receiver on the computer, converts corresponding point to and makes the trajectory diagram of pen by software corresponding in the computer.By being attached thereto the projector projects that connects to projection screen, in screen, just can see literal or the figure of writing again.This process is finished between second to part at centisecond, and what people's naked eyes were seen similarly is synchronous.

The present invention is described by embodiment, and those skilled in the art know, under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present invention, can make amendment to adapt to concrete situation and material to these features and embodiment and can not break away from the spirit and scope of the present invention.Therefore, the present invention is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection scope of the present invention.

Claims

1. electronic whiteboard, it is characterized in that: screen is provided with the two-dimensional invisible identification code, the camera of lettering pen front end is taken the two-dimensional invisible identification code of handwriting trace correspondence, the IC that is installed on the lettering pen converts the two-dimensional invisible identification code that photographs to corresponding digital signal, described digital signal sends to the radio receiver of computer by the wireless launcher of lettering pen, the digital signal that radio receiver receives is converted to trajectory diagram, described trajectory diagram by the projector projects that is connected with computer to screen.

2. a kind of electronic whiteboard according to claim 1, it is characterized in that: described screen is white screen, stamps the position that different two-dimensional invisible identification codes represents each point by white art paper, covers the inferior film of one deck on the white art paper.

3. a kind of electronic whiteboard according to claim 1 is characterized in that: the camera of the stealthy sign indicating number of described identification is installed on the front end of lettering pen, and written IC is installed on the stage casing of lettering pen, and wireless launcher is installed on the back segment of lettering pen.