CN109871155A - It is embedded into the radium-shine projection input scheme of mobile terminal device - Google Patents
It is embedded into the radium-shine projection input scheme of mobile terminal device Download PDFInfo
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- CN109871155A CN109871155A CN201910087255.9A CN201910087255A CN109871155A CN 109871155 A CN109871155 A CN 109871155A CN 201910087255 A CN201910087255 A CN 201910087255A CN 109871155 A CN109871155 A CN 109871155A
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- mobile terminal
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Abstract
The invention discloses a kind of radium-shine projection input scheme for being embedded into mobile terminal device, mobile terminal device is provided with laser emitter and infrared laser, laser emitter projection virtual keyboard to desktop；The infrared-ray of infrared laser transmitting detection laser, infrared laser receive the intercepted signal of infrared-ray, can trigger the interrupt routine in infrared laser；Starting camera is captured；The image that camera is captured is handled；Finger is obtained on flat image and is parked in the key position of dummy keyboard, then obtains deviation post, and the coordinate value of finger corresponding x and y on the table is calculated according to triangle telemetry；The corresponding key position of dummy keyboard is found, and is wrapped into the general incoming event data packet of system, is sent to application layer for its use, terminate identification, by reequiping projected keyboard, and it is directly embedded into mobile terminal device, adapts to the portability demand of mobile terminal device.
Description
[technical field]
The present invention relates to a kind of radium-shine projection input scheme for being embedded into mobile terminal device, espespecially a kind of text input sides
The radium-shine projection input scheme for being embedded into mobile terminal device of formula.
[background technique]
As mobile terminal technology is more and more mature, the equipment of mobile terminal includes but is not limited to mobile phone, pad etc., other
The mobile device of incorporeity keyboard, kind is although more and more, but the situation of homogeneity is also increasingly severe, and terminal itself
Some design problems still remain.
The screen of mobile device all designs smaller in order to portable, but on the interface of screen, light is that dummy keyboard will
Occupy the size more than one third or even half, and because the problem of screen size, the spacing and key of key
Size all limit very much our input feel, existing projected keyboard is existing on condition that needing independent hardware on the market
External equipment, but there is following disadvantage:
First, traditional projected keyboard needs to carry additional equipment and volume is big, it has not been convenient to outgoing to carry.
Second, for cost consideration, what is used inside traditional projected keyboard is all the microprocessor of low performance, when use
It is easy to appear failures.
Third, although being inputted using projected keyboard, the dummy keyboard on screen still occupies that screen is most can
Apparent area limits remaining function.
Therefore, it is necessary to a kind of good radium-shine projection input scheme for being embedded into mobile terminal device be designed, on overcoming
State problem.
[summary of the invention]
For background technique problem encountered, the purpose of the present invention is to provide one kind by changing projected keyboard
Dress, and be directly embedded into mobile terminal device, it is inputted to adapt to the radium-shine projection of portability demand of mobile terminal device
Scheme.
To achieve the above object, the present invention uses following technological means:
A kind of radium-shine projection input scheme being embedded into mobile terminal device comprising following steps: step 1: one is provided
Mobile terminal device, mobile terminal device are provided with a laser emitter and an infrared laser, and laser emitter is relatively infrared
Laser is located above, and mobile terminal device is provided with a camera, starts laser emitter, so that laser emitter projects
One dummy keyboard a to desktop；Step 2: starting infrared laser, so that infrared laser transmitting detection the infrared of laser is penetrated
The infrared-ray of line, the detection laser is parallel with desktop；Step 3: user by the finger of waiting be parked in the one of dummy keyboard by
When key position, infrared laser receives the intercepted signal of infrared-ray, can trigger the interrupt routine in infrared laser；Step
Rapid four: starting camera is captured；Step 5: handling the image that camera is captured, and forms flat image；Step
Six: obtaining finger on flat image and be parked in the key position of dummy keyboard, then obtain deviation post, and according to range of triangle
Method calculates the coordinate value of finger corresponding x and y on the table；Step 7: according to the coordinate value of x and y, dummy keyboard is found
Corresponding key position, and it is wrapped into the general incoming event data packet of system, application layer is sent to for its use, is corresponded to
Key position be shown in equipment interface；Step 8: primary input is completed, identification is terminated.
Further, in step 2, the infrared-ray of the detection laser of infrared laser transmitting is sector.
Further, in step 1, camera is 120 degree or more of wide-angle camera, is equipped in the camera infrared
Filter plate.
Further, in step 1, the position of camera and the position of laser emitter are in sustained height.
It is further that it is normal by distortion or nonplanar image flame detection that the mode that image is handled, which is, in step 5
Flat image, the gray processing for then carrying out color to normal flat image handles, and reinforces in normal plane image
Spot center effect weakens the periphery brightness of hot spot.
It is further that the hot spot position that finger is parked and pressing keys are formed is found on normal flat image in step 6
It sets, then calculates camera optical center axis with facula position angle degree and offset distance, to obtain deviation post, lead to
The distance for the infrared-ray that camera emits with infrared laser is crossed it is known that calculating light by the arm of angle angle formula of trigonometric function again
The coordinate value of corresponding x and y on desktop locating for spot.
Further, in step 2, the infrared-ray for detecting laser uses the wavelength of 808nm-810nm.
Further, laser emitter and camera are respectively positioned on the top of mobile terminal device, and infrared laser, which is located at, to be moved
The bottom of dynamic terminal device.
Further, the desktop in step 1 is smooth and smooth.
Compared with prior art, the invention has the following advantages:
The above-mentioned radium-shine projection input scheme for being embedded into mobile terminal device, mobile terminal device are provided with laser emitter
And infrared laser, laser emitter are located above with respect to infrared laser, and mobile terminal device is provided with camera, starting
Laser emitter, so that laser emitter projection virtual keyboard is to desktop；Start infrared laser, so that infrared laser emits
The infrared-ray of laser is detected, the infrared-ray of the detection laser is parallel with desktop；The finger of waiting is parked in virtually by user
When the key position of keyboard, infrared laser receives the intercepted signal of infrared-ray, can trigger in infrared laser
Disconnected program；Starting camera is captured；The image that camera is captured is handled, flat image is formed；In plan view
It as upper acquisition finger is parked in the key position of dummy keyboard, then obtains deviation post, and is sold according to triangle telemetry calculating
Refer to the coordinate value of corresponding x and y on the table；According to the coordinate value of x and y, the corresponding key position of dummy keyboard is found, and
It is wrapped into the general incoming event data packet of system, is sent to application layer for its use, corresponding key position is shown
In equipment interface；Once input is completed, identification is terminated, by reequiping projected keyboard, and is directly embedded into mobile whole
In end equipment, the portability demand of mobile terminal device is adapted to.
[Detailed description of the invention]
Fig. 1 is the schematic diagram for the radium-shine projection input scheme that the present invention is embedded into mobile terminal device；
Fig. 2 is the frame block diagram for the radium-shine projection input scheme that the present invention is embedded into mobile terminal device.
The drawing reference numeral of specific embodiment illustrates:
1 infrared laser of laser emitter, 2 camera 3
[specific embodiment]
Purpose, structure, feature and effect to facilitate the understanding of the present invention etc., now in conjunction with attached drawing and specific implementation
The invention will be further described for mode.
Referring to Figure 1 to Fig. 2, a kind of radium-shine projection input scheme being embedded into mobile terminal device, user can be simple
It is convenient to use, radium-shine projection input scheme is integrated with mobile terminal device (not shown, similarly hereinafter), user can be direct
The hardware carried using mobile terminal device, had both been saved cost and has also improved performance.
Referring to Figure 1 to Fig. 2, a kind of radium-shine projection input scheme being embedded into mobile terminal device comprising following step
It is rapid:
Step 1: providing a mobile terminal device, and mobile terminal device is provided with a laser emitter 1 and an infrared laser
Device 2, laser emitter 1 are located above with respect to infrared laser 2, and laser emitter 1 and camera 3 are respectively positioned on mobile terminal device
Top, infrared laser 2 is located at the bottom of mobile terminal device.Mobile terminal device is provided with a camera 3, camera 3
For 120 degree or more of wide-angle camera 3, infrared filter (not shown, similarly hereinafter), the position of camera 3 are installed in the camera 3
It sets and is in sustained height with the position of laser emitter 1.Start laser emitter 1, so that laser emitter 1 projects a virtual key
For disk (not shown, similarly hereinafter) to a desktop (not shown, similarly hereinafter), desktop is smooth and smooth.
Step 2: starting infrared laser 2, so that the infrared-ray of the transmitting detection laser of infrared laser 2, the detection swash
The infrared-ray of light is parallel with desktop, and the infrared-ray for detecting laser that infrared laser 2 emits is sector, detects laser
Infrared-ray uses the wavelength of 808nm-810nm, and since the human eye of user is to the infrared-ray of laser reactions vary sample, wavelength is
A faint feux rouges can be seen in the laser infrared ray of 780nm-808nm, human eye, and wavelength is the laser of 850nm to 1064nm
Infrared-ray human eye is invisible, and the laser infrared ray that wavelength is 808-850nm can see by camera 3.
Step 3: when the finger of waiting is parked in a key position of dummy keyboard by user, infrared laser 2 is received
The intercepted signal of infrared-ray, can trigger the interrupt routine in infrared laser 2.
Step 4: starting camera 3 is captured.
Step 5: the image captured to camera 3 is handled, and forms flat image, the mode that image is handled
To be normal flat image by distortion or nonplanar image flame detection, then carrying out color to normal flat image
Gray processing processing, and reinforce the spot center effect in normal plane image, weaken the periphery brightness of hot spot.
Step 6: obtaining finger on flat image and be parked in the key position of dummy keyboard, then obtain deviation post, and
The coordinate value that finger corresponding x and y on the table is calculated according to triangle telemetry, finds finger on normal flat image
Park and facula position that pressing keys are formed, then calculate 3 optical center axis of camera with facula position angle degree and
Offset distance, to obtain deviation post, the distance of the infrared-ray emitted by camera 3 with infrared laser 2 is it is known that again
The coordinate value of corresponding x and y on desktop locating for glossing up is calculated as the arm of angle angle formula of trigonometric function.
Step 7: according to the coordinate value of x and y, the corresponding key position of dummy keyboard is found, and is wrapped into system
General incoming event data packet is sent to application layer for its use, and corresponding key position is shown in equipment interface；
Step 8: primary input is completed, identification is terminated.
Referring to Figure 1 to Fig. 2, camera 3 is 120 degree or more of wide-angle camera 3, and is equipped in the camera 3 red
Outer filter plate needs disposably to shoot entire projection virtual keyboard because dummy keyboard is wider, and infrared filter can filter off
The veiling glare of other most wavelength, only the hot spot of remaining infrared-ray, can accelerate the process of image procossing and promote image
The accuracy rate of processing.
Referring to Figure 1 to Fig. 2, the above-mentioned radium-shine projection input scheme for being embedded into mobile terminal device, mobile terminal device
It is provided with laser emitter 1 and infrared laser 2, laser emitter 1 is located above with respect to infrared laser 2, and mobile terminal
Equipment is provided with camera 3, starts laser emitter 1, so that 1 projection virtual keyboard of laser emitter is to desktop；Start infrared
Laser 2, so that the infrared-ray of the transmitting detection laser of infrared laser 2, the infrared-ray of the detection laser are parallel with desktop；
When the finger of waiting is parked in the key position of dummy keyboard by user, infrared laser 2 receives what infrared-ray was intercepted
Signal can trigger the interrupt routine in infrared laser 2；Starting camera 3 is captured；The image that camera 3 is captured
It is handled, forms flat image；Finger is obtained on flat image and is parked in the key position of dummy keyboard, then obtains offset
Position, and calculate according to triangle telemetry the coordinate value of finger corresponding x and y on the table；According to the coordinate value of x and y, look into
The corresponding key position of dummy keyboard is found, and is wrapped into the general incoming event data packet of system, is sent to application layer
For its use, corresponding key position is shown in equipment interface；Primary input is completed, terminates identification, by the way that key will be projected
Disk is reequiped, and is directly embedded into mobile terminal device, and the portability demand of mobile terminal device is adapted to.
It is all to carry out electric connection use with mobile terminal device using additional hardware in traditional projection scheme,
Because working independently, projects in hardware and need to be additionally present of the devices such as processor, camera 3, but these devices are in fact
Natively have in mobile terminal device, be equivalent to device repetition, and for cost consideration, is all to use in additional hardware
Low performance hardware is also easy for breaking down in this way, and service life is also short, and the present invention by radium-shine projection input scheme with movement
Terminal device integrates, and the included hardware of mobile terminal device can be used directly in user, had both saved cost and has also improved
Performance.
Be described in detail above be only the preferred embodiments of the invention explanation, non-therefore limitation the scope of the patents of the invention,
So all equivalence techniques with carried out by this creation specification and diagramatic content change, it is both contained in the scope of the patents of the invention
It is interior.
Claims (9)
1. a kind of radium-shine projection input scheme for being embedded into mobile terminal device, which comprises the following steps:
Step 1: providing a mobile terminal device, and mobile terminal device is provided with a laser emitter and an infrared laser, swashs
Optical transmitting set is located above with respect to infrared laser, and mobile terminal device is provided with a camera, is started laser emitter, is made
It obtains laser emitter and projects a dummy keyboard a to desktop；
Step 2: starting infrared laser so that infrared laser transmitting detection laser infrared-ray, the detection laser it is red
Outer ray is parallel with desktop；
Step 3: when the finger of waiting is parked in a key position of dummy keyboard by user, infrared laser receives infrared
The intercepted signal of ray, can trigger the interrupt routine in infrared laser；
Step 4: starting camera is captured；
Step 5: handling the image that camera is captured, and forms flat image；
Step 6: obtaining finger on flat image and be parked in the key position of dummy keyboard, then obtain deviation post, and according to
Triangle telemetry calculates the coordinate value of finger corresponding x and y on the table；
Step 7: according to the coordinate value of x and y, the corresponding key position of dummy keyboard is found, and it is general to be wrapped into system
Incoming event data packet, be sent to application layer for its use, corresponding key position is shown in equipment interface；
Step 8: primary input is completed, identification is terminated.
2. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 2
In, the infrared-ray of the detection laser of infrared laser transmitting is sector.
3. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 1
In, camera is 120 degree or more of wide-angle camera, is equipped with infrared filter in the camera.
4. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 1
In, the position of camera and the position of laser emitter are in sustained height.
5. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 5
In be further that the mode that image is handled is, be normal flat image by distortion or nonplanar image flame detection, then
The gray processing processing of color is carried out to normal flat image, and reinforces the spot center effect in normal plane image, is subtracted
The periphery brightness of dim light spot.
6. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 6
In be further that the facula position that finger is parked and pressing keys are formed is found on normal flat image, then calculate and take the photograph
Picture head optical center axis is with facula position angle degree and offset distance, so that deviation post is obtained, by camera with red
The distance of the infrared-ray of outer laser transmitting as the arm of angle angle formula of trigonometric function it is known that calculated on desktop locating for glossing up again
The coordinate value of corresponding x and y.
7. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 2
In, the infrared-ray for detecting laser uses the wavelength of 808nm-810nm.
8. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: laser hair
Emitter and camera are respectively positioned on the top of mobile terminal device, and infrared laser is located at the bottom of mobile terminal device.
9. being embedded into the radium-shine projection input scheme of mobile terminal device as described in claim 1, it is characterised in that: step 1
In desktop it is smooth and smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087255.9A CN109871155A (en) | 2019-01-29 | 2019-01-29 | It is embedded into the radium-shine projection input scheme of mobile terminal device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910087255.9A CN109871155A (en) | 2019-01-29 | 2019-01-29 | It is embedded into the radium-shine projection input scheme of mobile terminal device |
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Cited By (4)
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| CN110450167A (en) * | 2019-08-27 | 2019-11-15 | 南京涵曦月自动化科技有限公司 | A kind of robot infrared laser positioning motion trail planning method |
| CN110913255A (en) * | 2019-10-31 | 2020-03-24 | 广东长虹电子有限公司 | Remote controller capable of laser outputting virtual keyboard and control method thereof |
| CN111860239A (en) * | 2020-07-07 | 2020-10-30 | 佛山长光智能制造研究院有限公司 | Key identification method and device, terminal equipment and computer readable storage medium |
| WO2023045696A1 (en) * | 2021-09-22 | 2023-03-30 | 极氪汽车(宁波杭州湾新区)有限公司 | Vehicle-mounted projection input system and vehicle |
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| US20140375539A1 (en) * | 2013-06-19 | 2014-12-25 | Thaddeus Gabara | Method and Apparatus for a Virtual Keyboard Plane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110450167A (en) * | 2019-08-27 | 2019-11-15 | 南京涵曦月自动化科技有限公司 | A kind of robot infrared laser positioning motion trail planning method |
| CN110913255A (en) * | 2019-10-31 | 2020-03-24 | 广东长虹电子有限公司 | Remote controller capable of laser outputting virtual keyboard and control method thereof |
| CN111860239A (en) * | 2020-07-07 | 2020-10-30 | 佛山长光智能制造研究院有限公司 | Key identification method and device, terminal equipment and computer readable storage medium |
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