CN202694306U - Rear projector interactive touch system - Google Patents
Rear projector interactive touch system Download PDFInfo
- Publication number
- CN202694306U CN202694306U CN 201220354396 CN201220354396U CN202694306U CN 202694306 U CN202694306 U CN 202694306U CN 201220354396 CN201220354396 CN 201220354396 CN 201220354396 U CN201220354396 U CN 201220354396U CN 202694306 U CN202694306 U CN 202694306U
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- screen
- interactive touch
- projection
- control system
- infrared light
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- Expired - Fee Related
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Abstract
The utility model relates to the field of computers and provides a rear projector interactive touch system which is an input device for inputting writing and operation signals to the computer. The system comprises a projector, a computer, a screen, an infrared light-emitting device and an infrared camera. Input signals are collected by the infrared camera and then processed by software to control the computer. The rear projector interactive touch system is low in cost and can be well combined with a rear-projection television, high input precision can be realized without a special writing screen, the integration of the rear projector interactive touch system and a display device is truly realized, the use and maintenance are facilitated, and social sources are saved.
Description
Technical field
The utility model relates to computer realm, is the input media to computer input person's handwriting signal and operation signal.
Background technology
At present electronic whiteboard is as teaching equipment, along with popularizing more and more widely by people of multimedia teaching has been applied in the middle of daily teaching and the training.Its teaching efficiency used in the teaching pattern blackboard or the teacher operating computer that is seated all can not compare in the past.But the electronic whiteboard that uses in the market, cost are all relatively more expensive, and the maintenance use cost is all very high, and can't realize the giant-screen application.The interactive touch-control system of rear-projection provided by the utility model not only greatly reduces cost, and with the good combination of rear-projection TV, need not special writing screen, reach very high input precision, really accomplished and the integrated application maintenance that made things convenient for of display device, saved social resources.
The utility model content
For the problems referred to above, the utility model provides a kind of rear-projection interactive touch-control system.The interactive touch-control system of described rear-projection, comprise projector, computing machine, screen, its improvements are: the interactive touch-control system of described rear-projection adopts infrared light-emitting device, the irradiation rear projection screen, diffuse reflector by screen forms uniform infrared light covering, when touching screen surface, hand or other object destroy original diffuse environment, forming obvious infrared light spot compiles, catch the position of hot spot on the screen by thermal camera, get the coordinate of glossing up by computing machine, thereby reach the purpose to computer realization control.System not only input precision is high, and is simple to operate, and easy to maintenance, saves social resources.
The interactive touch-control system of a kind of rear-projection described in the utility model, its improvements also are: this rear-projection technology is LCD, the various rear-projections that DLP, LCOS produce or adopt short focal length projector to build, applied range, the scope of application is large.
The interactive touch-control system of a kind of rear-projection described in the utility model, its improvements also are: this infrared light-emitting device is that the infrared light wavelength with emission is the infrared light-emitting device of 800 ~ 960nm, makes it have stable launching effect.
The interactive touch-control system of a kind of rear-projection described in the utility model, its improvements also are: this thermal camera is the thermal camera of 800 ~ 960nm for having the infrared light of collection wavelength, makes it have stable range of receiving, the filtering veiling glare.
The interactive touch-control system of a kind of rear-projection described in the utility model, its improvements also are: the installation direction of this thermal camera is to aim at internally screen, thereby guarantees to collect each position on the screen.
The interactive touch-control system of a kind of rear-projection described in the utility model, its improvements also are: the installation direction of this thermal camera is the catoptron of aiming at internally the screen back, thereby guarantees to collect each position on the screen.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is a kind of embodiment of the interactive touch-control system of rear-projection, comprise projector 4, computing machine, screen 1, infrared light-emitting device 2, thermal camera 3, the short focal length of 4 employings projector of projector, it is the ultrared infrared lamp of 960nm that but infrared light-emitting device 2 adopts emission wavelength, be installed in screen 1 back direct irradiation screen 1, form uniform infrared ray and cover.When by hand or object at screen 1 Surface Contact, destroy screen 1 original diffuse reflection, and form hot spot 5.At this moment, the received wavelength that is installed on screen 1 back is that the ultrared thermal camera 3 of 960nm catches the position of hot spot 5 on the screen 1, and transfers data in the computer.The computer expert crosses the coordinate that software calculates hot spot 5, thereby realizes the control to computer.Described software is application software, is responsible for thermal camera 3 is sent to the data of computer and processes, and gets glossing up 5 coordinates, then drives computer and operates accordingly.
Claims (6)
1. the interactive touch-control system of a rear-projection, comprise projector, computing machine, screen, it is characterized in that: the interactive touch-control system of described rear-projection adopts infrared light-emitting device, the irradiation rear projection screen, the diffuse reflector by screen forms uniform infrared light and covers, and destroys original diffuse environment when touching screen surface, forming obvious infrared light spot compiles, catch the position of hot spot on the screen by the infrared photography robot, get the coordinate of glossing up by computing machine, realize the control to computing machine.
2. the interactive touch-control system of a kind of rear-projection according to claim 1, it is characterized in that: described rear-projection technology is LCD, the rear-projection that DLP, LCOS produce or adopt short focal length projector to build.
3. the interactive touch-control system of a kind of rear-projection according to claim 1 is characterized in that: described infrared light-emitting device is that the infrared light wavelength with emission is the infrared light-emitting device of 800 ~ 960nm.
4. the interactive touch-control system of a kind of rear-projection according to claim 1, it is characterized in that: described thermal camera is the thermal camera of 800 ~ 960nm for having the infrared light of collection wavelength.
5. the interactive touch-control system of a kind of rear-projection according to claim 1, it is characterized in that: described infrared camera installation direction is to aim at internally screen.
6. the interactive touch-control system of a kind of rear-projection according to claim 1, it is characterized in that: described infrared camera installation direction is the catoptron of aiming at internally the screen back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354396 CN202694306U (en) | 2012-07-21 | 2012-07-21 | Rear projector interactive touch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354396 CN202694306U (en) | 2012-07-21 | 2012-07-21 | Rear projector interactive touch system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694306U true CN202694306U (en) | 2013-01-23 |
Family
ID=47549890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220354396 Expired - Fee Related CN202694306U (en) | 2012-07-21 | 2012-07-21 | Rear projector interactive touch system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345992A (en) * | 2013-07-24 | 2015-02-11 | 现代自动车株式会社 | Touch display device for vehicle and driving method thereof |
-
2012
- 2012-07-21 CN CN 201220354396 patent/CN202694306U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345992A (en) * | 2013-07-24 | 2015-02-11 | 现代自动车株式会社 | Touch display device for vehicle and driving method thereof |
| CN104345992B (en) * | 2013-07-24 | 2018-11-16 | 现代自动车株式会社 | Touch display unit and its driving method for vehicle |
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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: 20130123 Termination date: 20130721 |