CN202041938U - Multi-point touch control device of laser pen for projector screen - Google Patents
Multi-point touch control device of laser pen for projector screen Download PDFInfo
- Publication number
- CN202041938U CN202041938U CN2011200919111U CN201120091911U CN202041938U CN 202041938 U CN202041938 U CN 202041938U CN 2011200919111 U CN2011200919111 U CN 2011200919111U CN 201120091911 U CN201120091911 U CN 201120091911U CN 202041938 U CN202041938 U CN 202041938U
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- laser
- touch control
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- pen
- point
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Abstract
The utility model discloses a multi-point touch control device of a laser pen for a projector screen. A computer is connected with a projector, a camera and an infrared emitting module respectively; the infrared emitting module is in signal connection with a laser touch control pen; and the projector and the camera are aligned with a projecting curtain respectively. The utility model has the technical effects that: clicking and positioning of the laser pen are separated, the movement of a touch control point can be controlled once a power supply of the laser touch control pen is switched on regardless of whether a touch control key is pressed down, and the press-down and lift-up of the touch control key can be detected accurately. The advantage of non-contact long-distance operation of the laser touch control pen can be brought into full play, multi-point touch control operation in a projecting system is completed, and clicking operation has very high instantaneity.
Description
Technical field
The utility model relates to a kind of contactor control device, relates in particular to a kind of laser pen multi-point touch control apparatus that is used for projecting apparatus screen.
Background technology
The multi-point touch technology is a kind of human-computer interaction technology of novel computing machine, uses the touch-screen (screen, desktop, wall etc.) or the Trackpad of this technology, can both accept to carry out from a plurality of points on the screen man-machine interactive operation of computing machine simultaneously.Multi-point touch is multiple spot on same display interface or multi-user's interactive mode of operation, abandoned the single-point mode of operation of keyboard, mouse.According to the position detecting principle difference of touch-control input interface, contact panel can be divided into resistance-type, condenser type, sound wave type, optical profile type and induction etc.According to different optical sensor principles, common multiple point touching implementation comprises technology such as FTIR, DI, LLP at present.These several technology all are to discern touch point by the method for computer vision, but because these technology all need to make special contact panel, make and make relatively difficulty of the portable touch-control system of large scale, and use self luminous pointer (as redness or infrared LED are installed) to show that the motion track of touch point can simplify touch panel structure providedly, can directly apply to common is in the optical projection system of display surface with wall or projection screen.In a kind of like this system, the operator moves to pointer on the operating point (as button) of projection screen earlier, press the switch of light source on the pointer then, photograph the image that contains this touch point by the camera that is connected to computing machine, through Flame Image Process, identify the position of this touch point, if this touch point occurs first then computer operating system is triggered " touch point is pressed incident " simultaneously, computer software carries out synchronous processing and demonstration to this " incident " and coordinate thereof, in like manner, if the operator moves pointer or unclamps the pointer switch and also will trigger corresponding " incident ".In large-sized optical projection system (as multi-media classroom), the length that is limited by arm can't be directly by some position of pointer function screen, and the pointer (as the infrared laser pen) that needs to use laser to make light source replaces the LED pointer to carry out touch control operation.But laser is a kind of contactless operation, and the operator can't determine before pressing laser pointer switch that laser opens touch point position, back, thereby can't finish touch point location, clicking operation accurately.
Summary of the invention
The purpose of this utility model has been to provide a kind of laser pen multi-point touch control apparatus that is used for projecting apparatus screen, solve and can't determine before pressing the laser pen switch when using laser pen to carry out multi-point touch on the projecting apparatus screen that laser lights the problem of the position of back on screen, the while also provides a solution for the multi-point touch method of operating of large screen projector.
The utility model is achieved like this, it comprises computing machine, projector, camera, infrared transmission module, laser pointer, projection screen, computing machine connects projector, camera and infrared transmission module respectively, it is characterized in that the infrared transmission module signal connects the laser pointer, projector and camera are aimed at projection screen respectively.
Described laser pointer comprises housing, infrared receiving module, semiconductor laser, switch, is provided with infrared receiving module in the housing, and infrared receiving module connects semiconductor laser, and semiconductor laser connects switch.
Technique effect of the present utility model is: the click of laser pen is separated with the location, just can control moving of touch point behind the laser pointer power supply opening, and no matter whether the touch-control key is pressed, simultaneously, pressing and lift also of touch-control key can detect accurately.So just can make full use of the laser pointer can non-contact long apart from the advantage of operation, finish multi-point touch operation in the optical projection system, clicking operation also has very high real-time.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model laser pointer.
Embodiment
As shown in Figure 1 and Figure 2, the utility model is to realize like this, at first launch the infrared signal of certain carrier frequencies (as 38kHz) by computing machine 5 control infrared transmission modules 2, when laser pointer 1 faces toward screen, infrared receiving module 8 on the laser pointer 1 will receive infrared signal and demodulate the control signal of computing machine 5, when switch 10 is not pressed, this signal will directly act on semiconductor laser 9, thereby send the laser of flicker, and when opening the light 10 when pressing, laser is in normal bright state.When laser is got on the projection screen 4, camera 3 photographs the image that comprises the laser touch point on the projection screen 4, can detect hot spot and obtain its coordinate position by the image recognition program on the computing machine 5, simultaneously, whether hot spot occurred judging whether laser instrument is controlled by computing machine when computing machine 5 can be in low level state according to control signal, thereby obtain the information whether pushbutton switch is pressed, if the control signal of computing machine 5 is to allow semiconductor laser 9 extinguish, but the hot spot that shows this position on the image again is bright (being the control that laser instrument is not subjected to computing machine), can conclude that then switch 10 has been pressed, if detected hot spot light on and off situation consistent with the control signal of computing machine (being that laser instrument is controlled by computing machine) can conclude that then switch 10 is not pressed on the image.What obtain just can allowing behind the state of switch 10 the application program analog mouse presses and lifts operation etc., thereby realizes that more the multipoint operation of horn of plenty is used.Semiconductor laser 9, infrared receiving module 8 and switch 10 are installed on the described laser pointer 1, when not pressing by switch 10, the light on and off of semiconductor laser 9 are controlled by the infrared signal that infrared receiving module 8 is received, when switch 10 is pressed, semiconductor laser 8 will directly be lighted.
Claims (2)
1. laser pen multi-point touch control apparatus that is used for projecting apparatus screen, it comprises computing machine, projector, camera, infrared transmission module, laser pointer, projection screen, computing machine connects projector, camera and infrared transmission module respectively, it is characterized in that the infrared transmission module signal connects the laser pointer, projector and camera are aimed at projection screen respectively.
2. a kind of laser pen multi-point touch control apparatus that is used for projecting apparatus screen according to claim 1, it is characterized in that described laser pointer comprises housing, infrared receiving module, semiconductor laser, switch, be provided with infrared receiving module in the housing, infrared receiving module connects semiconductor laser, and semiconductor laser connects switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200919111U CN202041938U (en) | 2011-03-31 | 2011-03-31 | Multi-point touch control device of laser pen for projector screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200919111U CN202041938U (en) | 2011-03-31 | 2011-03-31 | Multi-point touch control device of laser pen for projector screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041938U true CN202041938U (en) | 2011-11-16 |
Family
ID=44969375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200919111U Expired - Fee Related CN202041938U (en) | 2011-03-31 | 2011-03-31 | Multi-point touch control device of laser pen for projector screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017028359A1 (en) * | 2015-08-19 | 2017-02-23 | 李江 | Touch control apparatus and touch control method |
| CN106774868A (en) * | 2016-12-06 | 2017-05-31 | 杨超峰 | A kind of wireless demo device |
-
2011
- 2011-03-31 CN CN2011200919111U patent/CN202041938U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017028359A1 (en) * | 2015-08-19 | 2017-02-23 | 李江 | Touch control apparatus and touch control method |
| CN106774868A (en) * | 2016-12-06 | 2017-05-31 | 杨超峰 | A kind of wireless demo device |
| CN106774868B (en) * | 2016-12-06 | 2020-04-10 | 杨超峰 | Wireless presentation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20120331 |