CN201435164Y - Large-screen wireless demo auxiliary system - Google Patents
Large-screen wireless demo auxiliary system Download PDFInfo
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- CN201435164Y CN201435164Y CN2009203046340U CN200920304634U CN201435164Y CN 201435164 Y CN201435164 Y CN 201435164Y CN 2009203046340 U CN2009203046340 U CN 2009203046340U CN 200920304634 U CN200920304634 U CN 200920304634U CN 201435164 Y CN201435164 Y CN 201435164Y
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Abstract
The utility model discloses a large-screen wireless demo auxiliary system, which is characterized by comprising a computer, a projector, a laser page turning pen, and a camera for acquiring projectionscreen images, wherein the projector and the camera are connected with the computer; and the laser page turning pen is connected with the computer through wireless communication. The computer comprises a screen detecting unit for segmenting the projection screen images from the images shot by the camera, and a laser point target detecting unit for recognizing laser point targets from the images acquired by the camera. Through a man-machine interactive system provided by the utility model, the functions of wireless mouth control, remote labeling, detail demonstration and remote control page turning during a PPT demonstration can be achieved. The large-screen wireless demo auxiliary system obviously enhances man-machine interaction and has a low cost.
Description
Technical field
The utility model belongs to electronic technology field, relates to a kind of giant-screen wireless demo backup system.
Background technology
In existing teaching practice, use the PPT projection equipment of projector and computing machine combination to be extensive use of in China.This traditional projector and the PPT display mode of computing machine combination have following shortcoming:
Scope of activities is limited, be unable to do without mouse-keyboard.Traditional man-machine interaction based on keyboard and mouse still is limited in the speaker computer equipment next door, thereby has brought inconvenience to the speaker.The speechmaker can run into such embarrassment when making multimedia presentation or form process, on one side need one side operating computer to explain, this has just seriously limited demonstrator's scope of activities, has also destroyed the fluency of demonstration simultaneously.The electronic whiteboard that carries video camera and mutual wall etc. are arranged in the market, speaker's mark etc. of can directly before screen, giving a lecture, but the zone of speaker before can not frameing out, this just is restricted to speaker's scope of activities.
Cannot on demo content, mark, lack exchange and interdynamic.In the projector teaching, there are a lot of teachers to control the broadcast that the laser Pen for turning page carries out PPT, this has strengthened speaker's scope of activities really, if but the teacher want the content of PPT is marked especially, have to again get back to and call paintbrush with mouse before the computer and mark.This just has influence on speaker's fluency, also makes the speaker can not correctly express oneself idea and suggestion timely.Present mutual wall and electronic whiteboard except costliness, the product that in demo system, seldom can on presentation screen, mark.
Can not the widespread usage meeting room or multiple occasion such as command post.Giant-screen demo system technology and use all more outstanding have only mutual wall and electronic whiteboard on the market.Other product correlation functions are more single again, can not satisfy speaker's demand.When carrying out field training, directorate just need the demo system of a perfect in shape and function such as army, so that carry out the interchange of battle plan between the commander, the leader also has the manoeuvre summary of experience and lessons afterwards to the layout of combat duty and route.These things only depend on demonstration of traditional sand table and the distribution of staff officer's record etc., are the requirements that can not satisfy modernized high-tech and rapid reaction war.It is quite inconvenient again that mutual wall and electronic whiteboard carry installation, so be easy to carry about with one and interactive system that function is strong according to needs are a kind of.
Cost an arm and a leg.More common electronic whiteboard needs about more than 10,000 yuan of Renminbi, and mutual wall is more expensive.If want to realize in short-term popularizing in China, needing increases huge education funds, and obviously this is not suitable for the economic national conditions of China.
Can not realize that key content or pictorial detail amplify displaying.
The utility model content
Technical problem to be solved in the utility model provides a kind of giant-screen wireless demo backup system, and this installation cost is low, flexible and convenient to use and have a rich functions.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
A kind of giant-screen wireless demo backup system is characterized in that, comprises computing machine, projector, laser Pen for turning page, is used to obtain the video camera of projection screen image; Described projector all is connected with computing machine with video camera; Described laser Pen for turning page is connected with Computer Wireless Communication.
Described computing machine comprises that one is used for screen detecting unit that projection screen image is split from image that video camera is taken the photograph (function of this unit comprises that also the pixel with projection screen and computer screen is mapped one by one, in case of necessity projection screen image is carried out rim detection, it is corresponding with computer display that operations such as affined transformation make it, calibration basis as laser spots), described computing machine comprises that also an image that is used for obtaining from video camera identifies the laser spots object detection unit of laser spots target (soon the position of laser spots is converted into the coordinate position of corresponding graphoscope).
Projector and video camera all pass through wired connection with computing machine.Laser Pen for turning page and computing machine are by radio communication.The laser Pen for turning page is mutual with USB radio frequency receiver (being connected computing machine) by radiofrequency launcher (being connected the laser Pen for turning page) with computing machine.
The beneficial effect of utility model:
Strengthen man-machine interaction: because the laser Pen for turning page has been realized the partial function of mouse, therefore, greatly strengthened man-machine interaction, made the user use PPT more convenient.
Long-range page turning: the utility model is by wireless (adopting radio frequency messages mechanism) control PPT page turning, and the speaker can play PPT with the audience in any corner in classroom or meeting room while exchanging.The benefit of using radio frequency messages mechanism is a plug and play, strengthens speaker's scope of activities, and is user-friendly.
Long-range mark: the utility model detects by laser spots, can realize long-range marking Function, promptly come with laser Pen for turning page analog mouse function by the detection laser point, on key content by drawing a circle and setting-out (be similar to mouse and operate on computers) marks.
Details is showed: details is showed it is to more tiny Word message, is amplified than the image information of comparatively dense etc., allows the beholder can clearly see this part detail content.By to particular range sectional drawing around the mouse, adopt bilinear interpolation to carry out the processing and amplifying of pixel to sectional drawing, then the image after amplifying is carried out edge-smoothing and denoising, processed images is presented at the front end (promptly amplifying window) in sectional drawing zone.Amplify window and can amplify new mouse position zone on every side in real time along with the change of mouse position.Can realize the adjustment of enlargement factor and the adjustment of magnification region by the operation laser pen.(this part content realizes by software, is prior art)
The realization cost is low: the utility model is just considered economical and practical problem when beginning to design, and the equipment of interpolation is economical and practical.The hardware device that comprises has computing machine, projector, projection screen, video camera and laser Pen for turning page, and can both guarantee computing machine and projector in present school basically, so we are as long as add a video camera again and laser pen is just passable.Video camera and laser pen are being bought only 200 yuans on the market.This does not only waste existing equipment, also by improving the function that has improved demo system greatly, has improved cost performance greatly.
Description of drawings
Fig. 1 is the theory diagram of embodiment 1.
Fig. 2 is the concrete structure figure of embodiment 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of giant-screen wireless demo backup system is characterized in that, comprises computing machine, projector, laser Pen for turning page, is used to obtain the video camera of projection screen image; Described projector all is connected with computing machine with video camera; Described laser Pen for turning page is connected with Computer Wireless Communication.
Described computing machine comprises that one is used for screen detecting unit that projection screen image is split from image that video camera is taken the photograph (function of this unit also comprises being mapped one by one as number projection screen and computer screen, in case of necessity operations such as image stretches are made it corresponding with computer display, calibration basis as laser spots), described computing machine comprises that also an image that is used for obtaining from video camera identifies the laser spots object detection unit of laser spots target (soon the position of laser spots is converted into the pixel coordinate of graphoscope).
Projector and video camera all pass through wired connection with computing machine.Laser Pen for turning page and computing machine are by radio communication.
Claims (2)
1. a giant-screen wireless demo backup system is characterized in that, comprises computing machine, projector, laser Pen for turning page, is used to obtain the video camera of projection screen image; Described projector all is connected with computing machine with video camera; Described laser Pen for turning page is connected with Computer Wireless Communication.
2. giant-screen wireless demo backup system according to claim 1, it is characterized in that, described computing machine comprises that one is used for screen detecting unit that projection screen image is split from image that video camera is taken the photograph, comprises that also an image that is used for obtaining from video camera identifies the laser spots object detection unit of laser spots target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203046340U CN201435164Y (en) | 2009-06-18 | 2009-06-18 | Large-screen wireless demo auxiliary system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203046340U CN201435164Y (en) | 2009-06-18 | 2009-06-18 | Large-screen wireless demo auxiliary system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435164Y true CN201435164Y (en) | 2010-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203046340U Expired - Fee Related CN201435164Y (en) | 2009-06-18 | 2009-06-18 | Large-screen wireless demo auxiliary system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201435164Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963749A (en) * | 2010-08-25 | 2011-02-02 | 山西寰烁环保科技有限公司 | Portable multimedia projector |
| CN102262733A (en) * | 2010-05-28 | 2011-11-30 | 株式会社理光 | Laser point detection method and apparatus thereof |
| CN113947955A (en) * | 2021-10-18 | 2022-01-18 | 贵州振华信息技术有限公司 | Manuscript demonstration system with amplification function and demonstration method |
| CN113947954A (en) * | 2021-10-18 | 2022-01-18 | 贵州振华信息技术有限公司 | Manuscript demonstration system with cutting function and demonstration method |
-
2009
- 2009-06-18 CN CN2009203046340U patent/CN201435164Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262733A (en) * | 2010-05-28 | 2011-11-30 | 株式会社理光 | Laser point detection method and apparatus thereof |
| CN102262733B (en) * | 2010-05-28 | 2014-03-19 | 株式会社理光 | Laser point detection method and apparatus thereof |
| CN101963749A (en) * | 2010-08-25 | 2011-02-02 | 山西寰烁环保科技有限公司 | Portable multimedia projector |
| CN101963749B (en) * | 2010-08-25 | 2011-11-09 | 山西寰烁环保科技有限公司 | Portable multimedia projector |
| CN113947955A (en) * | 2021-10-18 | 2022-01-18 | 贵州振华信息技术有限公司 | Manuscript demonstration system with amplification function and demonstration method |
| CN113947954A (en) * | 2021-10-18 | 2022-01-18 | 贵州振华信息技术有限公司 | Manuscript demonstration system with cutting function and demonstration method |
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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: 20100331 Termination date: 20110618 |