CN109002198A - projection device laser pen input system - Google Patents
projection device laser pen input system Download PDFInfo
- Publication number
- CN109002198A CN109002198A CN201811169230.5A CN201811169230A CN109002198A CN 109002198 A CN109002198 A CN 109002198A CN 201811169230 A CN201811169230 A CN 201811169230A CN 109002198 A CN109002198 A CN 109002198A
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- China
- Prior art keywords
- laser pen
- laser
- projection
- projection screen
- image
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G06F3/03545—Pens or stylus
-
- 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
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
- G06F3/0386—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry for light pen
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention patent relates to it is a kind of can be by laser pen signal is converted into projection device input signal on projection screen system, specific technical solution is that manipulator focuses bright spot movement by the laser that the laser pen in control hand generates on the projection screen and flashes, one picture pick-up device is installed by projector, laser pen bright spot brightness change and the position on projection screen are captured by its camera, and be converted into screen cursor signal and send optical projection system, to realize " mouse " function controlling of manipulator by laser pen to large screen projection screen.
Description
Technical field
The invention patent relates to a kind of systems for controlling projection screen operation by laser pen.
Background technique
Electronic system display screen human-computer interaction direct relation user experience and operation and graphical interfaces operating system are washed in a pan
Eliminate the most important reason of text interface system.Computer is because the form for having mouse to open the more than ten years dominates epoch, intelligent hand
Machine and tablet computer are because touch screen function occurs with technology maturation and as nearly consumer electronics mainstream hot spot about ten years.And once
Although the household electrical appliances overlord television set of warp can be manipulated by remote controler, handling and interaction effect are less than computer and mobile phone
Gradually retire backstage.
Computer display screen is initially only projected to large screen by projector, and interface manipulation is mainly by manipulating computer.
When user carries out project content demonstration before large screen projection, generally generated on the projection screen using laser pen bright spot come
Demo content is prompted, also has and provides the simple screen control function such as page turning using laser pen demonstration device, but cannot provide eventually
Such as mouse or this i.e. view of the touch screen i.e. function of control, influences projection screen and use and experience.
With electronic technology development, image cost be greatly reduced and meanwhile its quality (resolution ratio) and rate (refreshing frequency) just
It improves rapidly, image processing techniques is also mature, therefore it is defeated in real time for projection device to increase new convenience, economy, response
Enter mode and possibility is provided.
Summary of the invention
Projection screen manipulator can clearly be led to conveniently and on the projection screen far from screen and computer by laser pen
It crosses highlighted laser and focuses indicating positions on the screen and corresponding display information.If there is laser pen can be recognized accurately in a system
Focus position and variation can realize information interaction with the people of manipulation laser pen, to simulate presently most common and practise
Used electronic display manipulation as computor-keyboard operation and smart phone touch screen operation effect.Therefore laser pen is obtained
It is the key that laser pen input system on the projection screen.
The invention patent solves technical solution used by critical issue: using a picture pick-up device real-time capture projection
The image of screen, and handled by intelligent image and identify laser pen focus point and its position and flash variation, it is converted into standard
Mouse format information phase is carried out according to input information by it by USB interface feedback to the computer or other intelligent electronic devices
The operation answered.To realize that manipulator is manipulated by the control that laser pen is completed to computer or other intelligent electronic devices.
Projection device laser pen input system of the present invention is made of picture pick-up device and laser pen, with projector, throwing
The electronic computing devices such as shadow screen and computer complete the manipulation of the projection screen of laser pen together.Wherein projector by VGA or
The video interfaces such as HDMI receive computer output video information, and project on the projection screen.Laser pen is under the manipulation of user
High bright spot is focused out under projection screen, picture pick-up device obtains projection screen image by the monitoring camera-shooting to projection screen, and leads to
It crosses software image processing and obtains real-time laser focusing bright spot position and variation, and be converted into mouse format information and connect by USB
Mouth feedback to the computer, computer makes corresponding operating and display according to the information that the picture pick-up device of receiving simulates mouse, thus finally
Realize that user uses manipulation of the laser pen to computer and its display interface.
Picture pick-up device described in projection device laser pen input system of the present invention is by embedded image processing module and camera shooting
Head composition.Camera should be not less than 10 frame per second, can identify that laser pen is bright for capturing projection screen image, camera shooting frequency
The flash rate of point, bright spot light and shade change frequency can be used as different control instructions.Embedded image processing module can be from camera
Projection screen image information is intercepted according to Luminance Distribution in the projection screen image of acquisition and laser focuses bright spot position and light and shade
Information, and compare with the information that former frame is extracted, it obtains laser pen focusing bright spot position and bright dark frequency changes and is converted into mouse
Cursor format is marked, computer is sent by image processing module USB interface.
Laser pen described in projection device laser pen input system of the present invention by laser diode, control circuit, battery and
Power supply and control button are mounted in a pen.Wherein battery is each circuit work power supply of laser pen, and button switch includes power supply
Switch and function button, power switch be serially connected among battery and control circuit, on off operating mode determine laser pen whether work
Make sending laser.Control circuit generates the laser diode on-off function circuit of different frequency according to different control button states,
Function button at least there are two types of, wherein there is a kind of function to be set as similar mouse left button " determination " function, other push button function
It can be according to use habit and program requirements set-up function.Laser diode issues the laser of fixed wave length and is led under electrical condition
Over-focusing device is launched, and focuses out highlighted spot on the projection screen.If battery used by laser pen is chargeable
Lithium battery, be considered as increase lithium battery charging circuit.
Under traditional computer+projector operating mode, projection screen laser signal is converted similar mouse by picture pick-up device
Format signal sends computer by USB, and computer can handle command adapted thereto in a manner of mouse completely.In smart projector mode
Under, i.e., projector+android system one, project content are intelligence system display interfaces, and picture pick-up device can turn laser signal
It turns to touch screen format signal and sends intelligence system processing.User manipulates analog by laser pen on the projection screen in this way
At user's touch operation directly on large screen.
It can be separate for projecting application, user using projection device laser pen input system involved in the invention patent
Screen and desktop reach same effect and experience by laser pen, and projection screen manipulation is made more to meet habit and mainstream.Furthermore
Picture pick-up device external interface is USB, communication protocol referring to mouse, can also completely compatible existing system, that is, accomplish plug and play, together
When also reduce development difficulty and risk.
Detailed description of the invention
Here is to further illustrate in conjunction with the accompanying drawings and embodiments to invention.
Fig. 1 projection device laser pen input system operation instruction figure；
Fig. 2 picture pick-up device built-in function schematic diagram；
Fig. 3 laser pen built-in function schematic diagram；
1. user in figure, 2. laser pens, 3. projection screens, 4. projectors, 5. picture pick-up devices, 6. computers, 7. laser
Focus bright spot, 8. USB connecting lines, 9. cameras, 10. image processing modules, 11. USB interfaces, 12. batteries, 13. power supplys
Switch, 14. control circuits, 15. laser diodes, 16. focusing devices, 17. function buttons.
Specific implementation
By the optical projection system of Fig. 1 connection human-computer interaction, user (1) opens projector (4) and computer (6), and computer (6) enters
WINDOWS operation interface, and be projected on projection screen (3) by projector (4), picture pick-up device (5) power supply is opened, camera shooting is set
Standby (5) power on rear internal image processing module (10) and are received and handled from camera (9) by certain frequency timing to obtain projection screen
Curtain (3) image, identifies screen size and in the picture relative position according to image grayscale difference, while it is bright to capture laser focusing
The position of point (7) in the picture, calculates it in the relative position of projection screen (3), and bright with the laser focusing that previous frame obtains
The position of point (7) is compared, and is obtained laser and is focused bright spot (7) position offset, is converted into mouse cursor position format, if
Laser focuses bright spot (7) and disappears in image, then time of bright spot (7) appearing and subsiding is focused by laser in the image of timed capture
Number calculates its frequency flashed, and identifies corresponding control instruction, is equally converted into the effective format of mousebutton, passes through
Its USB interface (11) sends computer (6), and the WINDOWS operating system of computer (6) is shown and grasped according to " mouse " instruction
Make.User (1) opens the power switch (13) of laser pen (2), and the laser diode (15) in laser pen (2) is in control circuit
(14) lower be powered of control issues laser, is gone out by focusing device (16) directional transmissions, and in barrier in its direction of the launch
Upper generation laser focuses bright spot (7).User (1) focuses bright spot by adjusting the angle that laser pen (2) emits to control laser
(7) be incident upon projection screen (3) position, at the same can by the function button (17) in operation laser pen (2), laser pen (2)
Control circuit (14) obtains the state of feature capability key (17), passes through the on-off control of the respective frequencies to laser diode (15)
System, the laser for issuing laser pen (2) is with the bright dark variation of certain frequency, and laser focuses bright spot (7) on corresponding projection screen (3)
And then it is flashed with same frequency, this variation is by the image processing module (10) of picture pick-up device (5) by different frame image
Reason identifies, is equally converted into mouse format information by USB interface and sends computer (6), computer (6) software is according to acquisition
" cursor of mouse " position and " function button " instruct, the corresponding executable icon in position, virtual on corresponding current display screen
The operation objects such as key and internet link execute corresponding operating.As synchronization corresponding position has operation object, no operation
Instruction is directed toward certain operation object also as a moment " cursor ", but there is no operational order then without relative program, electricity
Brain (6) is also done nothing.Computer (6) operation program is only user (1) eyes and is seen in this way, and passes through laser
It is that computer (6) pass through projector (4) operation object institute shown by projection screen (3) again while pen (2) is indicated and operates
Corresponding program, to complete the accurate interaction of user (1) and computer (6).
The claimed patent right range of the invention patent includes: to capture to swash using picture pick-up device and image recognition technology
Light pen is in projection screen focus point, and the USB communication protocol for being converted into " mouse " format is interacted with electronic equipments such as computers；Laser
Pen is flashed by generating different frequency by key control, represents different control instructions.
Claims (6)
1. a kind of projection device laser pen input system, it is characterized in that in common computer+projector+laser pen projection demonstration
Increase picture pick-up device in system and laser pen projection focuses the image identification function of bright spot.
2. picture pick-up device according to claim 1, it is characterized in that including the camera of projection screen image recording and having intelligence
The image processing module of energy image identification function.
3. image processing module according to claim 2 and its intelligent image identification function, it is characterized in that: the brightness for passing through image
To identify projection screen size, laser pen focusing bright spot and its with respect to the position of projection screen, while passing through before and after frames image ratio
To the change in location and flash rate for identifying laser pen focusing bright spot.
4. image processing module according to claim 2, it is characterized in that: laser on projection screen is focused bright spot with respect to projection screen
Curtain position, flash and change identified by intelligent image after be converted into " computer mouse " be compatible with USB format serial communication
Agreement.
5. picture pick-up device according to claim 1 is realized and is communicated between computer it is characterized in that: picture pick-up device has USB interface.
6. laser pen according to claim 1, it is characterized in that: increasing function button on the basis of existing laser pen and control can be corresponded to
Laser processed exports the control circuit of different switching frequencies, to realize the control of laser pen different instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811169230.5A CN109002198A (en) | 2018-10-08 | 2018-10-08 | projection device laser pen input system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811169230.5A CN109002198A (en) | 2018-10-08 | 2018-10-08 | projection device laser pen input system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109002198A true CN109002198A (en) | 2018-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811169230.5A Pending CN109002198A (en) | 2018-10-08 | 2018-10-08 | projection device laser pen input system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109002198A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112527174A (en) * | 2019-09-19 | 2021-03-19 | 华为技术有限公司 | Information processing method and electronic equipment |
| CN113031841A (en) * | 2021-03-08 | 2021-06-25 | 中国航空工业集团公司北京长城航空测控技术研究所 | Laser pen interaction control system and laser pen interaction control method |
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| CN1746831A (en) * | 2004-09-08 | 2006-03-15 | 上海迪比特实业有限公司 | Interactive projection system |
| WO2011085814A1 (en) * | 2010-01-14 | 2011-07-21 | Brainlab Ag | Controlling and/or operating a medical device by means of a light pointer |
| CN102279668A (en) * | 2010-06-08 | 2011-12-14 | 株式会社理光 | Information interaction method and system |
| CN102622108A (en) * | 2012-01-18 | 2012-08-01 | 深圳市中科睿成智能科技有限公司 | Interactive projecting system and implementation method for same |
| CN102902382A (en) * | 2012-10-11 | 2013-01-30 | 陈晓帅 | Multithreaded software kernel-based photoelectric remote control system |
| CN105786224A (en) * | 2016-03-29 | 2016-07-20 | 电子科技大学 | Universal laser pointer and computer operation method |
| CN107491192A (en) * | 2017-08-08 | 2017-12-19 | 吉林大学 | A kind of camera shooting mouse laser pen alignment system and localization method |
-
2018
- 2018-10-08 CN CN201811169230.5A patent/CN109002198A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746831A (en) * | 2004-09-08 | 2006-03-15 | 上海迪比特实业有限公司 | Interactive projection system |
| WO2011085814A1 (en) * | 2010-01-14 | 2011-07-21 | Brainlab Ag | Controlling and/or operating a medical device by means of a light pointer |
| CN102279668A (en) * | 2010-06-08 | 2011-12-14 | 株式会社理光 | Information interaction method and system |
| CN102622108A (en) * | 2012-01-18 | 2012-08-01 | 深圳市中科睿成智能科技有限公司 | Interactive projecting system and implementation method for same |
| CN102902382A (en) * | 2012-10-11 | 2013-01-30 | 陈晓帅 | Multithreaded software kernel-based photoelectric remote control system |
| CN105786224A (en) * | 2016-03-29 | 2016-07-20 | 电子科技大学 | Universal laser pointer and computer operation method |
| CN107491192A (en) * | 2017-08-08 | 2017-12-19 | 吉林大学 | A kind of camera shooting mouse laser pen alignment system and localization method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112527174A (en) * | 2019-09-19 | 2021-03-19 | 华为技术有限公司 | Information processing method and electronic equipment |
| CN112527174B (en) * | 2019-09-19 | 2022-10-11 | 华为技术有限公司 | Information processing method and electronic equipment |
| CN113031841A (en) * | 2021-03-08 | 2021-06-25 | 中国航空工业集团公司北京长城航空测控技术研究所 | Laser pen interaction control system and laser pen interaction control method |
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Application publication date: 20181214 |
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