CN108595026A - A kind of new infrared laser pen for realizing mouse function - Google Patents
A kind of new infrared laser pen for realizing mouse function Download PDFInfo
- Publication number
- CN108595026A CN108595026A CN201810266903.2A CN201810266903A CN108595026A CN 108595026 A CN108595026 A CN 108595026A CN 201810266903 A CN201810266903 A CN 201810266903A CN 108595026 A CN108595026 A CN 108595026A
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- Prior art keywords
- module
- infrared
- mouse
- image
- infrared laser
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03542—Light pens for emitting or receiving light
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
Abstract
The invention discloses a kind of new infrared laser pens for realizing mouse function, including sequentially connected Infrared laser emission module, image capture module, image processing module, wireless signal transmission module and mouse control module, the Infrared laser emission module is for emitting infrared beam to projection screen, the image for the infrared part that described image acquisition module is remained for the image on acquired projections screen and after being filtered the image collected signal passes to described image processing module, described image processing module calculates the coordinate of cursor of mouse on projection screen according to the image of infrared part and coordinate data is passed to mouse control module by wireless signal transmission module, the mouse control module control cursor of mouse movement, to realize mouse function.Compared with the prior art, the present invention effectively eliminate laser pen laser it is close with projected image wavelength when caused by error, improve viewer's visual effect advantageous effect.
Description
Technical field
The present invention relates to multimedia overhead projector control technology field, more particularly, to a kind of mouse function that may be implemented
New infrared laser pen can be applied to the large-screen receiver that large-screen interactive formula system is such as watched at a distance, specifically for projection
Using.
Background technology
The application of large screen projection is more and more extensive in the activity such as teaching, meeting, lecture.In order to reach in these occasions
To better demonstrating effect, speaker is other than using computer to show demo content by projecting apparatus, in speaker and demonstration
Computer is also usually used to carry out between appearance interactive.Currently, it is two kinds that speaker, which operates most of mode of computer,：Use mouse
It marks keyboard operation and is operated using laser pen.And both modes have its limitation：When being operated using mouse-keyboard, standing
Speaker in operation can be very inconvenient；And when laser pen being used to operate, common laser pen generally only has page-turning function,
Manipulation is limited.
In order to make the function of mouse and laser pen be combined, realization mouse pointer follows laser pen mobile and operation,
Existing method is shot to projection screen by camera, then carries out image procossing according to the image of shooting, is calculated
Go out the position of laser facula.And the shortcomings that these methods is when the content color of screen display is close with laser pen laser color
When, the calculating of facula position can be interfered, result will produce larger error；And if swashing using high-power and high-luminance
Light pen distinguishes background and hot spot, then excessively bright hot spot can influence the visual experience of viewer.
Invention content
To overcome existing technological deficiency, laser pen laser and projected image wave can be effectively eliminated the present invention provides a kind of
Error caused by when long close, to effectively improve viewer's visual effect, practicability stronger and can realize the novel red of mouse function
Outer laser pen.
To achieve the purpose of the present invention, it is achieved using following technical scheme：
A kind of new infrared laser pen for realizing mouse function, including sequentially connected Infrared laser emission module, Image Acquisition
Module, image processing module, wireless signal transmission module and mouse control module, the Infrared laser emission module is for emitting
On infrared beam to projection screen, described image acquisition module is for the image on acquired projections screen and by the image collected
The image for the infrared part that signal remains after being filtered passes to described image processing module, described image processing module
The coordinate of cursor of mouse on projection screen is calculated according to the image of infrared part and coordinate data is passed through into wireless signal transmission
Module passes to mouse control module, the mouse control module control cursor of mouse movement, to realize mouse function.
In the application, Infrared laser emission module emits the infrared beam that human eye can't see so that when in use, infrared to swash
The infrared beam that optical transmitter module emits will not cause vision to interfere viewer, and can also effectively avoid same color
Or the difficulty that the background of similar color brings beam detection.Described image acquisition module can filter out on projection screen well
The image of visible light part, and retain the image of infrared black light part, it is projected in preferably orient infrared beam
Coordinate on projection screen.
Further, further include key-press module, the key-press module is connect with Infrared laser emission module, the button mould
Block is equipped with several function buttons, is switched for the person of being conveniently operated, the manipulations such as displacement up and down.
Further, the key-press module includes switch key, left button control button, right button control button and other functions
Control key.
In the present invention, the function button of key-press module is not limited only to left and right control button, and left and right control button is pressed
Lower and release operation can equally be transferred to mouse control program by wireless signal transmission module, then pass through mouse control program
Corresponding left-right key operation is executed on computers.
Further, the Infrared laser emission module includes for providing the driving power of driving power, for emitting
The infrared laser of infrared beam and beam expander for being collimated to infrared beam, the infrared laser and key-press module
Connection.
Infrared beam is collimated before projecting projection screen by beam expander after the transmitting of infrared transmission module device,
In order to detection later, meanwhile, the infrared beam light gathering degree higher after collimation is more advantageous to image capture module identification and adopts
Collection.
Further, described image acquisition module include for captured in real-time projection screen outdoor scene imaging sensor and
High pass colour filter for filtering the image of visible light part on projection screen, retaining infrared part image.
The thang-kng wave band of high pass colour filter can cover the launch wavelength of infrared laser and LED and effectively cut well
Only visible light, and its cutoff wavelength is longer than the maximum wavelength of visible light, effectively avoids the image of visible light part to image sensing
Device interferes when shooting projection screen outdoor scene.CCD, CMOS or other image devices may be selected in described image sensor.Image
The material of sensor can select silicon, or have the material of higher response, such as germanium near infrared band.For cost consideration,
The imaging sensor of preferential selection silicon substrate.
Further, described image processing module includes SCM system, the SCM system and image capture module
Connection, the coordinate for calculating cursor of mouse, and by coordinate data by wireless signal transmission to wireless signal transmission module.
There is the software for calculating infrared laser coordinate in the SCM system.
Further, the wireless signal transmission module includes wireless transmitting unit and receiver, and the receiver is used for
It receives coordinate data and mouse control program is transferred to by wireless transmitting unit.
Further, the projection screen is equipped with infrared ancillary equipment, the light that the infrared ancillary equipment is emitted
The consistent wavelength for the infrared beam that wavelength is emitted with red laser transmitting module.
Further, the infrared ancillary equipment is four LED light, and four LED light are respectively provided at projection screen
Four angles, the wavelength one for the infrared beam that four LED light emit the wavelength of light and red laser transmitting module emits
It causes.
In the present invention, four LED light are for positioning projection screen, by the filtered figure of high pass colour filter
When carrying out projection screen shooting as sensor, five luminous points occurred in image can be taken, are four LED light anchor points respectively
With an infrared laser luminous point, the image taken is transmitted to image processing module, passes through SCM system by imaging sensor
In in advance prepared image processing program, calculate the relative position of infrared laser luminous point on the projection screen, then convert
At corresponding coordinate.
Further, the infrared beam wavelength that the Infrared laser emission module emits is 780-960nm.
The response coefficient of the photosensitive silicon crystal unit of silicon substrate imaging sensor in the wave band that infrared beam wavelength is 780-960nm
It is larger, it can preferably detect hot spot.In addition, this wave band is the visual response wavelength of non-human eye, human eye vision will not be produced
Raw interference.
Compared with the prior art, the invention has the advantages that：
（1）Infrared light is easy to distinguish with the visible image of screen prjection, can eliminate and swash using when visible light lasers pen
Light it is close with projected image wavelength and caused by error.
（2）Human eye is not visible to infrared light, and only display cursor of mouse can improve viewing without laser facula on screen
The visual experience of person.
（3）The occupation mode of the present invention is similar to conventional laser pen, while also having merged the function and occupation mode of mouse,
Than trace ball closer to the operating habit of user, there is more excellent user experience.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is mounted on projection screen for LED light of the present invention and the structural schematic diagram of receiver.
Fig. 3 is the fundamental diagram of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings to embodiment of the present invention
It is described in more detail.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes infrared laser 1, beam expander 2, driving power 3, and three's composition is red
Outer laser emitting module 15；Imaging sensor 4, high pass colour filter 5, the two form image capture module 16；Laser switch 7,
Right click button 8, left button button 9, other function buttons 10, four composition key-press modules 18；SCM system 11 forms at image
Manage module 19；Wireless transmitting unit 12, receiver 13 form wireless transport module 20；Mouse operation and control program 14 forms mouse control
Molding block 21.Wherein infrared laser 1, driving power 3 are connected on 7 circuit of laser switch, imaging sensor 4 and microcontroller
On 11 circuit of system be connected, SCM system 11 is connected on 12 circuit of wireless transmitting unit, right click button 8, left button button 9 and
Other function buttons 10 are connected on 12 circuit of wireless transmitting unit.
As shown in Fig. 2, four LED light 6 are placed on four angles of screen to position, laser switch 7 is opened,
Laser pen gets to infrared light luminous point on projection screen, and the luminous point of four on screen corner LED and the luminous point of laser pen are through height
Logical colour filter 5 is imaged after filtering on imaging sensor 4.Then the image taken is transmitted to SCM system 11, by pre-
The image processing program first set is calculated, and the corresponding position coordinates in luminous point position are obtained.In turn by coordinate data
It is transferred to receiver 13 by wireless transmitting unit 12, corresponding mouse is finally executed by mouse operation and control program 14 on computers
Moving operation.
After control mouse is moved to position appropriate, right click button 8 or left button button 9 can be pressed/be discharged, nothing is passed through
Line transmitter unit 12 will press accordingly/and release conditions are transferred to receiver 13, then pass through mouse operation and control program on computers
14, which execute corresponding right button/pressing for left button/, discharges operation.
The working method of the present invention is as follows：Laser pen is opened by opening laser switch button 7, infrared laser 1 is sent out
Infrared beam is penetrated, and projects projection screen.Imaging sensor 4 carries out shoot on location to screen, and acquisition is comprising on projection screen
The image of infrared laser hot spot.Due to placed high pass colour filter 5 before imaging sensor 4, throwing can be filtered out well
The image of visible light part on shadow screen, and retain the image of infrared part, the image of wherein infrared part includes infrared laser
Four LED light 6 used for positioning in the infrared light spot and projection screen that device 1 emits.Infrared part after imaging sensor will filter
Image send SCM system 11 to, it is corresponding that SCM system 11 by software calculates infrared part image mid-infrared laser
Mouse coordinates, coordinate position is finally issued into receiver 13 by wireless signal.After receiver 13 receives coordinate data, it will sit
Mark data are sent to mouse control program 14, are moved to cursor of mouse by mouse control program 14, realize mouse function.
The laser pen of the present invention is worked using infrared wavelength, therefore light beam not only will not be dry to the generation of the vision of viewer when in use
It disturbs, the difficulty that can also effectively avoid same or similar color background from bringing beam detection.
Obviously, above-mentioned case study on implementation of the invention is only intended to clearly illustrate examples made by the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in this hair invention right and want made by within the spirit and principle of invention
Within the protection domain asked.
Claims (10)
1. a kind of new infrared laser pen for realizing mouse function, which is characterized in that including sequentially connected Infrared laser emission
Module, image capture module, image processing module, wireless signal transmission module and mouse control module, the infrared laser hair
Module is penetrated for emitting infrared beam to projection screen, described image acquisition module is used for the image on acquired projections screen simultaneously
The image of the infrared part remained after the image collected signal is filtered passes to described image processing module, institute
Image processing module is stated to calculate the coordinate of cursor of mouse on projection screen according to the image of infrared part and lead to coordinate data
It crosses wireless signal transmission module and passes to mouse control module, the mouse control module control cursor of mouse movement, to real
Existing mouse function.
2. a kind of new infrared laser pen for realizing mouse function according to claim 1, which is characterized in that further include by
Key module, the key-press module are connect with Infrared laser emission module, and the key-press module is equipped with several function buttons, for side
The manipulations such as convenient to operate person switched, displacement up and down.
3. a kind of new infrared laser pen for realizing mouse function according to claim 2, which is characterized in that the button
Module includes switch key, left button control button, right button control button and other function control keys.
4. a kind of new infrared laser pen for realizing mouse function according to claim 2, which is characterized in that described infrared
Laser emitting module includes for providing the driving power of driving power, the infrared laser for emitting infrared beam and being used for
To the beam expander that infrared beam is collimated, the infrared laser is connect with key-press module.
5. a kind of new infrared laser pen for realizing mouse function according to claim 1, which is characterized in that described image
Acquisition module includes for the imaging sensor of captured in real-time projection screen outdoor scene and for filtering visible light on projection screen
The high pass colour filter of partial image, reservation infrared part image.
6. a kind of new infrared laser pen for realizing mouse function according to claim 1, which is characterized in that described image
Processing module includes SCM system, and the SCM system is connect with image capture module, the seat for calculating cursor of mouse
Mark, and by coordinate data by wireless signal transmission to wireless signal transmission module.
7. a kind of new infrared laser pen for realizing mouse function according to claim 1, which is characterized in that described wireless
Signal transmission module includes wireless transmitting unit and receiver, and the receiver passes through wireless transmission list for receiving coordinate data
Member is transferred to mouse control program.
8. a kind of new infrared laser pen for realizing mouse function according to claim 1, which is characterized in that the projection
Curtain is equipped with infrared ancillary equipment, and wavelength and the red laser transmitting module of the light that the infrared ancillary equipment is emitted emit
The consistent wavelength of infrared beam out.
9. a kind of new infrared laser pen for realizing mouse function according to claim 8, which is characterized in that described infrared
Ancillary equipment is four LED light, and four LED light are respectively provided at four angles of projection screen, and four LED light emit light
The consistent wavelength of infrared beam that emits of wavelength and red laser transmitting module.
10. a kind of new infrared laser pen for realizing mouse function according to claim 1, which is characterized in that described red
The infrared beam wavelength that outer laser emitting module emits is 780-960nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266903.2A CN108595026A (en) | 2018-03-28 | 2018-03-28 | A kind of new infrared laser pen for realizing mouse function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266903.2A CN108595026A (en) | 2018-03-28 | 2018-03-28 | A kind of new infrared laser pen for realizing mouse function |
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| Publication Number | Publication Date |
|---|---|
| CN108595026A true CN108595026A (en) | 2018-09-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810266903.2A Pending CN108595026A (en) | 2018-03-28 | 2018-03-28 | A kind of new infrared laser pen for realizing mouse function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113946238A (en) * | 2021-10-15 | 2022-01-18 | 北京京东方技术开发有限公司 | Display and method for operating display by using infrared rays |
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Application publication date: 20180928 |
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