CN101387930B - Electronic white board electronic white board - Google Patents

Abstract

The invention relates to an electronic whiteboard, which comprises a panel, pluralities of infrared emitters, pluralities of infrared receivers and an electronic component. The pluralities of infrared emitters are distributed along the periphery of the panel, and infrared rays emitted by the emitters can go through along the surface of the panel to cross into an infrared matrix. The pluralities of infrared receivers are distributed along the periphery of the panel, each infrared receiver corresponds to each infrared emitter, and the infrared receiver and the infrared emitter are located on two sides of the panel oppositely. The electronic component is located at a corner of the panel, which determines whether to block the infrared rays emitted by the infrared emitters or not and where to block in the infrared matrix.

Description

Electronic whiteboard

Technical field

The present invention is about a kind of electronic whiteboard, particularly a kind of electronic whiteboard of having installed RF transmitter and infrared receiver.

Background technology

Because it is simple in structure that the infrared touch panel curtain has, and do not receive electric current, voltage and electrostatic interference, can under some harsh environmental conditions, work; And have plurality of advantages such as high stability and high-resolution, make the infrared touch panel curtain more and more become the main product in touch screen market.

Common in the market infrared touch panel curtain mainly is located on CRT monitor or the LCD by the infrared ray framework, makes that infrared touch panel curtain usable range is limited to.

Summary of the invention

The invention provides a kind of electronic whiteboard, borrowing installing RF transmitter and infrared receiver on the plate face of electronic whiteboard, can detect the motion track of user on the plate face.

Electronic whiteboard provided by the present invention, its main element have comprised a panel, a plurality of RF transmitter, a plurality of infrared receiver and an electronic component.Wherein, a plurality of RF transmitters, along the edge arranged distribution of panel, and the infrared ray that it sent is to pass through along panel plate face, and is woven into an infrared ray matrix.A plurality of infrared receivers then are the edge arranged distribution along panel, and wherein each infrared receiver is corresponding to a RF transmitter, and infrared receiver and corresponding RF transmitter lay respectively at the relative both sides of panel.Electronic component then is the corner that is positioned at panel, and according to the signal of infrared receiver, whether the decision infrared ray that RF transmitter sent is blocked, and the position of decision blocking-up is where to be arranged in infrared ray matrix; This panel has first limit respect to one another and second limit and the 3rd limit respect to one another and the 4th limit; First circuit board and tertiary circuit plate, wherein first circuit board and tertiary circuit plate are all strip, and respectively along first limit and the setting of the 3rd limit of panel, RF transmitter is connected to the side of first circuit board and tertiary circuit plate; Second circuit board and the 4th circuit board, wherein second circuit board and the 4th circuit board are all strip, and respectively along second limit and the setting of the 4th limit of panel, these infrared receivers are connected to the side of second circuit board and the 4th circuit board; First circuit board, tertiary circuit plate, second circuit board, the 4th circuit board are formed by plural piece circuit board assemblies serial connection respectively, and the circuit board assemblies two ends have first joint and second joint.

In one embodiment, said panel is a rectangular panel, and has first limit respect to one another and second limit and the 3rd limit respect to one another and the 4th limit.

In another embodiment; Described electronic whiteboard more comprises first circuit board and tertiary circuit plate; Wherein first circuit board and tertiary circuit plate are all strip; And first limit and the 3rd limit along panel is provided with respectively, and RF transmitter is connected to the side of first circuit board and tertiary circuit plate.Wherein, first circuit board is connected in series by plural piece circuit board respectively with the tertiary circuit plate and forms.

Said electronic whiteboard more comprises second circuit board and the 4th circuit board; Wherein second circuit board and the 4th circuit board are all strip; And second limit and the 4th limit along panel is provided with respectively, and infrared receiver is connected to the side of second circuit board and the 4th circuit board.Wherein, second circuit board is connected in series by plural piece circuit board respectively with the 4th circuit board and forms.

In one embodiment, said electronic whiteboard more comprises a framework, is installed in the periphery of panel, in order to ccontaining RF transmitter, infrared receiver and electronic component.Its middle frame has an outward extending grillage, and has a plurality of openings that run through on the grillage, wherein on opening sidewalls, has installed RF transmitter respect to one another and infrared receiver respectively.

Description of drawings

Fig. 1 has shown the apparatus structure of electronic whiteboard provided by the present invention;

Fig. 2 has shown the circuit theory diagrams of electronic whiteboard provided by the present invention;

Fig. 3 has shown that the present invention installs RF transmitter and the mode of infrared receiver on panel;

Fig. 4 has shown the circuit board assemblies that is used for assembling the strip circuit board;

Fig. 5 has shown the circuit board assemblies that is used for assembling the strip circuit board;

Fig. 6 has shown the electronic whiteboard of installing framework on panel;

Fig. 7 has shown the thin portion structure of grillage;

Fig. 8 has shown the application scenarios of electronic whiteboard collocation computing machine and projector;

Fig. 9 has shown and has been made into octagonal panel; And

Figure 10 has shown the conglobate panel of making.

Drawing reference numeral:

Electronic whiteboard 1panel 10

Thefirst limit 10a, thesecond limit 10b

The3rd limit 10c the4th limit 10d

RF transmitter 11infrared receivers 12

Electronic component 13microcontrollers 130

Commonserial bus joint 131first circuit board 14a

Second circuit board 14btertiary circuit plate 14c

The4th circuit board 14d circuit board assemblies 140

Thefirst joint 140a, thesecond joint 140b

Circuit board assemblies 141first joint 141a

The secondjoint 141b framework 15

Grillage 150openings 1501

RF transmitter 16ainfrared receiver 16b

Arcuation circuit board 17a, 17b, 17c, 17d

Computing machine 2 projectors 3

Embodiment

Please with reference to Fig. 1, this figure has shown a kind ofelectronic whiteboard 1 provided by the present invention.The main element of thiselectronic whiteboard 1 has comprised apanel 10, a plurality ofRF transmitter 11, a plurality ofinfrared receiver 12 and anelectronic component 13.

Said a plurality ofRF transmitter 11 along the edge arranged distribution ofpanel 10, and is arranged on the plate face of panel 10.Wherein, the infrared ray that described theseRF transmitters 11 are sent can pass through along the plate face ofpanel 10, and is woven into an infrared ray matrix.

As for said a plurality ofinfrared receivers 12, also be edge arranged distribution, and be arranged on the plate face ofpanel 10 along panel 10.Wherein, Each thisinfrared receiver 12 is corresponding to thisRF transmitter 11; And thisinfrared receiver 12 lays respectively on the relative both sides ofpanel 10 with thiscorresponding RF transmitter 11, the infrared ray that is sent in order to receiving infrared-ray transmitter 11.

In addition; Saidelectronic component 13 is arranged at the corner ofpanel 10; Can be according to the signal of described theseinfrared receivers 12, whether the infrared ray that determines described theseRF transmitters 11 to be sent is blocked, and the position that decision is blocked is where to be arranged in infrared ray matrix.

It should be noted that although thepanel 10 that shows among Fig. 1 is a rectangular panel, but in the making of reality; Demand on the viewable design, and be made into the panel of other shape, for example; Also can be made into polygonal panel, and RF transmitter and infrared receiver are set respectively in polygonal face plate edge, and the infrared ray that RF transmitter is sent; Plate face along the polygon panel passes through, and is woven into infrared ray matrix.

Please with reference to Fig. 1, describedrectangular panel 10 has thefirst limit 10a respect to one another and thesecond limit 10b and the3rd limit 10c respect to one another and the 4th limit 10d.Shown in figure, thefirst limit 10a and thesecond limit 10b are two long limits ofrectangular panel 10, then are two minor faces ofrectangular panel 10 as for the3rd limit 10c and the4th limit 10d.

In this embodiment, a plurality ofRF transmitters 11 are to be positioned on the plate face ofrectangular panel 10, and respectively along thefirst limit 10a ofrectangular panel 10 and the3rd limit 10c mode arranged distribution with straight line.By this, the infrared ray that theseRF transmitters 11 are sent can pass through along the plate face ofrectangular panel 10, and is woven into an infrared ray matrix.

As for a plurality ofinfrared receivers 12, also be positioned on the plate face ofrectangular panel 10, and be respectively along thesecond limit 10b ofrectangular panel 10 and the4th limit 10d mode arranged distribution with straight line.As aforementioned, eachinfrared receiver 12 just in time corresponds to aRF transmitter 11, in order to receive the infrared ray that is sent by thisRF transmitter 11.

In addition, being arranged at theelectronic component 13 onrectangular panel 10 corners, then is with the circuit ways of connecting, is connected to describedRF transmitter 11 and infrared receiver 12.Thiselectronic component 13 sends the infrared ray except being used for controllingRF transmitter 11; Signal that also can receiving infrared-ray receiver 12; Whether the infrared ray that is sent withjudgement RF transmitter 11 is blocked, and the place that decision is blocked is which position that is arranged in whole infrared ray matrix.

That is, owing to be positioned atRF transmitter 11 its infrared rays that sent on the3rd limit 10c, can send from left to right, and be positioned at 12 receptions of infrared receiver on the4th limit 10d alongrectangular panel 10 laterally through the plate face.Same, be positioned atRF transmitter 11 its infrared rays that sent on thefirst limit 10a, can from top to bottom send, and be positioned at 12 receptions of infrared receiver on thesecond limit 10b alongrectangular panel 10 longitudinally through the plate face.

Under this situation; 11 of RF transmitters that are positioned on thefirst limit 10a send infrared ray longitudinally; Can go up the horizontal infrared ray that eachRF transmitter 11 is sent with the3rd limit 10c respectively, intersection on the plate face ofrectangular panel 10, and constitute infrared ray matrix.

Thus; As user during with finger touch or with anyobject touch panel 10; Except thefirst limit 10a vertical infrared ray that upwardcertain RF transmitter 11 is sent is blocked in meeting, also can block the3rd limit 10c simultaneously and go up the horizontal infrared ray thatcertain RF transmitter 11 is sent.At this moment, the signal throughelectronic component 13 is received can determine touch point position.

Please with reference to Fig. 2, this figure has shown the circuit theory diagrams ofelectronic whiteboard 1 among the present invention.Wherein,electronic component 13 main elements have comprised a microcontroller (MCU) 130, are linked to acontrol chip 142 via circuit, and for example model is the element of 74LS138, is linked toRF transmitter 11 again.On the other hand, the signal that is received byinfrared receiver 12 can be sent tomicrocontroller 130 again via an amplifier 143.It should be noted thatelectronic component 13 and comprised a USB that (Universal SerialBus, USB)joint 131, are connected in microcontroller 130.Thus, when using theelectronic whiteboard 1 of this case,, canelectronic whiteboard 1 and computing machine or other electronic product be linked as long as see through general USB connecting line.Thus, as long as see through the USB connecting line,electronic whiteboard 1 just can obtain enough electric power, drives above-mentionedRF transmitter 11 andinfrared receiver 12.

Please with reference to Fig. 3, this figure has shown in one embodiment, installingRF transmitter 11 and the mode ofinfrared receiver 12 on panel 10.Wherein, saidelectronic whiteboard 1 more comprisesfirst circuit board 14a,second circuit board 14b,tertiary circuit plate 14c and the 4th circuit board 14d.First circuit board 14a andtertiary circuit plate 14c are all the circuit board of strip, and are provided with along thefirst limit 10a ofpanel 10 and the3rd limit 10c respectively.As for, 11 of RF transmitters are the sides that is connected tofirst circuit board 14a andtertiary circuit plate 14b.

Same,second circuit board 14b and the4th circuit board 14d also are the circuit board of strip, and respectively along thesecond limit 10b and the4th limit 10d setting of panel 10.12 of above-mentioned infrared receivers are connected to the side ofsecond circuit board 14b and the4th circuit board 14d.

Please with reference to Fig. 4, in preferred embodiment, above-mentionedfirst circuit board 14a andtertiary circuit plate 14c are to be formed by plural piececircuit board assemblies 140 serial connections, and wherein circuit board assemblies 140 is the short circuit board of length.The right ends of each piececircuit board assemblies 140 has thefirst joint 140a and thesecond joint 140b respectively, has then connected a plurality ofRF transmitters 11 with the mode of dense arrangement as for the side at circuit board assemblies 140.When assembling; Can in regular turncircuit board assemblies 140 be installed on the face plate edge; And see through the mode that winding displacement links,second joint 140b of lastcircuit board assemblies 140 and thefirst joint 140a of a backcircuit board assemblies 140 are linked, and twocircuit board assemblies 140 are serially connected.Thus, as long as assemble several piececircuit board assemblies 140 in regular turn, can constitute requiredfirst circuit board 14a andtertiary circuit plate 14c.

Same, in the embodiment that Fig. 5 showed,second circuit board 14b and the4th circuit board 14d also are to be cascadedly combined by plural piececircuit board assemblies 141, wherein circuit board assemblies 141 is the short circuit board of length.The right ends of each piececircuit board assemblies 141 has thefirst joint 141a and thesecond joint 141b respectively, and at the side ofcircuit board assemblies 141, also the mode with dense arrangement has connected a plurality of infrared receivers 12.When assembling, can borrow thefirst joint 141a to engage, and be serially connected with thesecond joint 141b with two circuit board assemblies 141.By this, can be assembled into requiredsecond circuit board 14b and the4th circuit board 14d.

Use the shortcircuit board assemblies 140 and 141 of aforementioned length to assemble requiredstrip circuit board 14a-14d, have suitable advantage.At first, for thedifferent panel 10 of various sizes, all can be through adjustmentcircuit board assemblies 140 and 141 number of combinations, meet thispanel 10 it grows the strip circuit board of limits and minor face and assemble out.Secondly, in use, to such an extent as toRF transmitter 11,infrared receiver 12 circuit board assemblies 140 or 141; The situation that all possibly break down or damage; At this moment, as long as to there being the circuit board assemblies 140 or 141 that damages situation to change, except increasing the convenience of repairing; Do not change owing to do not need whole piecestrip circuit board 14a-14d all eliminated, therefore significantly reduce the cost of repairing yet.

Please with reference to Fig. 6, saidelectronic whiteboard 1 more comprises aframework 15, is installed on the periphery surface ofpanel 10, in order to ccontainingaforesaid RF transmitter 11,infrared receiver 12,electronic component 13 andstrip circuit board 14a-14d.Shown in figure, duringrectangular panel 10 in being applied to figure,framework 15 also can be made into rectangular-shaped, so that cover describedstrip circuit board 14a-14d andelectronic component 13 fully.Certainly, on the side offramework 15, can make opening, to avoid coveringRF transmitter 11 andinfrared receiver 12.

At the lower edge of saidframework 15 and have an outward extendinggrillage 150; Please with reference to shown in Figure 7; Ongrillage 150, have several openings that runs through 1501, wherein on the sidewall ofopening 1501, and installedRF transmitter 16a respect to one another andinfrared receiver 16b respectively.ThisRF transmitter 16a andinfrared receiver 16b also see through circuit and are linked to electronic component 13.When the user passes throughopening 1501 with finger or with object, can interdict infrared ray therebetween, in caseelectronic component 13 receives the signal ofinfrared receiver 16b, just can carry out other feature operation according to described these opening 1501 default functions.

Then, please with reference to Fig. 8, this figure has shown electronic whiteboard that this case provides 1, the situation when practical application.As shown in the figure,electronic whiteboard 1 can be via USB (USB)joint 131 of aforementionedelectronic element 13, and produces electrically connects with a computing machine 2.Thiscomputing machine 2 also is linked to a projector 3, and the screen-picture ofcomputing machine 2 is projected on thepanel 10 ofelectronic whiteboard 1 via projector 3.

Owing to have the infrared ray matrix that constitutes by infrared light beam on thepanel 10; Therefore; When the user touchespanel 10 with finger or other object, can block two infrared light beams anyhow through this position, this moment,electronic component 13 meetings be sent to computingmachine 2 with user's operation trace; Via the computing ofcomputing machine 2, judge the correspondence position of its touch point of user on screen-picture again.

See through this kind arrangement,electronic whiteboard 1 is except the screen that can be used ascomputing machine 2 uses, and the operation of user onpanel 10 also can produce the effect that is equal to computer mouse, and can see through in the action onpanel 10 surfaces, reaches the effect of control computer 2.That is the user can reach the purpose with finger or the direct control computer of other object.

In addition, because the handwriting trace of user onpanel 10, all can be detected byelectronic component 13, and be sent to computingmachine 2 and write down or handle, therefore,electronic whiteboard 1 also can be applicable in the general meeting or education activities.

As aforementioned, though thepanel 10 that Fig. 1 and Fig. 3 showed is rectangle, but in design alternative; Also can be made into other shape, for example, in Fig. 9,panel 10 is made into an octagon panel; Andstrip circuit board 14a-14d,RF transmitter 11 andinfrared receiver 12 are set respectively on its plate face edge; And the infrared ray thatRF transmitter 11 is sent, pass through along the plate face of octagon panel, and be woven into infrared ray matrix.

In addition, please with reference to Figure 10,panel 10 also can be made into a round panel, and on the peripheral board face of this round panel,arcuation circuit board 17a-17d is set,RF transmitter 11 and infrared receiver 12.Same, as to be sent by theRF transmitter 11 ofarcuation circuit board 17a and 17c inner edge infrared ray, can be on the plate face of round panel infrared ray matrix of formation, and by 12 receptions of infrared receiver ofarcuation circuit board 17b and 17d inner edge.

Though the present invention illustrates as above with preferred embodiments, so it is not only to terminate in the foregoing description that in order to limit spirit of the present invention with the invention entity.Be with, the modification of in not breaking away from spirit of the present invention and scope, being done all should be included in the claim scope.

Claims (4)

1. an electronic whiteboard is characterized in that, described electronic whiteboard comprises:

One panel;

A plurality of RF transmitters, along the edge arranged distribution of described panel, the infrared ray that wherein said these RF transmitters sent passes through along the plate face of described panel, and is woven into an infrared ray matrix;

A plurality of infrared receivers; Edge arranged distribution along described panel; Wherein each described infrared receiver is corresponding to a described RF transmitter; And described infrared receiver and corresponding described RF transmitter lay respectively at the relative both sides of described panel, in order to receive the infrared ray that described RF transmitter sends;

One electronic component; Be positioned on the described panel; According to the signal of described these infrared receivers, whether the decision infrared ray that described these RF transmitters sent is blocked, and the position that decision is blocked is where to be arranged in described infrared ray matrix;

Described panel has first limit respect to one another and second limit and the 3rd limit respect to one another and the 4th limit;

First circuit board and tertiary circuit plate; Wherein said first circuit board and tertiary circuit plate are all strip; And said first limit and the 3rd limit along said panel is provided with respectively, and described these RF transmitters are connected to the side of said first circuit board and tertiary circuit plate;

Second circuit board and the 4th circuit board; Wherein said second circuit board and the 4th circuit board are all strip; And said second limit and the 4th limit along said panel is provided with respectively, and described these infrared receivers are connected to the side of described second circuit board and the 4th circuit board;

Described first circuit board, tertiary circuit plate, second circuit board, the 4th circuit board are formed by plural piece circuit board assemblies serial connection respectively; Said circuit board assemblies two ends have first joint and second joint, and described circuit board assemblies interconnects through the winding displacement ways of connecting;

One framework; Be installed on the periphery surface of this panel; Ccontaining said RF transmitter, said infrared receiver, said electronic component and described first circuit board, tertiary circuit plate, second circuit board, the 4th circuit board, the lower edge of wherein said framework have an outward extending grillage, and said grillage has several openings that runs through; On the sidewall of said opening; Installed a pair of RF transmitter respect to one another and infrared receiver respectively, respect to one another a pair of RF transmitter and the infrared receiver on the sidewall of said opening, installed respectively see through circuit and are connected to said electronic component.

2. electronic whiteboard as claimed in claim 1 is characterized in that, described panel is a rectangular panel.

3. an electronic whiteboard is characterized in that, described electronic whiteboard comprises:

One rectangular panel has first limit respect to one another and second limit and the 3rd limit respect to one another and the 4th limit;

A plurality of RF transmitters; Described first limit and described the 3rd limit along described rectangular panel distributes respectively; The infrared ray that wherein said these RF transmitters sent can pass through along the plate face of described rectangular panel, and is woven into an infrared ray matrix;

A plurality of infrared receivers; Described second limit and described the 4th limit along described rectangular panel distributes respectively; Wherein each described infrared receiver is corresponding to a described RF transmitter, to receive described the infrared ray that RF transmitter was sent;

One electronic component; Be positioned at the corner of described rectangular panel; According to the signal of described these infrared receivers, whether the decision infrared ray that described these RF transmitters sent is blocked, and where the position that decision is blocked is arranged in described infrared ray matrix;

Described panel has first limit respect to one another and second limit and the 3rd limit respect to one another and the 4th limit;

First circuit board and tertiary circuit plate; Wherein said first circuit board and tertiary circuit plate are all strip; And said first limit and the 3rd limit along said panel is provided with respectively, and described these RF transmitters are connected to the side of said first circuit board and tertiary circuit plate;

Second circuit board and the 4th circuit board; Wherein said second circuit board and the 4th circuit board are all strip; And said second limit and the 4th limit along said panel is provided with respectively, and described these infrared receivers are connected to the side of described second circuit board and the 4th circuit board;

Described first circuit board, tertiary circuit plate, second circuit board, the 4th circuit board are formed by plural piece circuit board assemblies serial connection respectively; Said circuit board assemblies two ends have first joint and second joint, and described circuit board assemblies interconnects through the winding displacement ways of connecting;

One framework; Be installed on the periphery surface of this panel; Ccontaining said RF transmitter, said infrared receiver, said electronic component and described first circuit board, tertiary circuit plate, second circuit board, the 4th circuit board, the lower edge of wherein said framework have an outward extending grillage, and said grillage has several openings that runs through; On the sidewall of said opening; Installed a pair of RF transmitter respect to one another and infrared receiver respectively, respect to one another a pair of RF transmitter and the infrared receiver on the sidewall of said opening, installed respectively see through circuit and are connected to said electronic component.

4. electronic whiteboard as claimed in claim 3; It is characterized in that; Described electronic whiteboard more comprises a rectangular frame, is installed in the periphery surface of described panel, in order to ccontaining described RF transmitter, described infrared receiver and described electronic component.

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