CN200944179Y - Photoelectric location and projector of infrared writing and projection system equipped with the same - Google Patents
Photoelectric location and projector of infrared writing and projection system equipped with the same Download PDFInfo
- Publication number
- CN200944179Y CN200944179Y CN 200620044540 CN200620044540U CN200944179Y CN 200944179 Y CN200944179 Y CN 200944179Y CN 200620044540 CN200620044540 CN 200620044540 CN 200620044540 U CN200620044540 U CN 200620044540U CN 200944179 Y CN200944179 Y CN 200944179Y
- Authority
- CN
- China
- Prior art keywords
- unit
- image
- projector
- signal processing
- infrared
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Position Input By Displaying (AREA)
- Projection Apparatus (AREA)
Abstract
The utility model discloses a photoelectrical positioning and infrared interactive transmitting projector and a projection system, to make the projector become a projector with the integration of interactive writing and projecting, and make the projector undergo the one-off correction before leaving the factory, without the need of the correction before each time of application. The technical proposal include that the projector comprises a projection module, a light receiving unit to receive the infrared emitted by the outer controlling equipment, a video unit to shoot the real-time image on the video screen, a signal processing unit, which further comprises a movement correction unit to move the images videoed by the video unit to make the images consistent to the image in the computer, a positioning unit to record the real-time positional coordinates of the outer controlling equipment on the screen according to the signal transmitted by the light receiving unit and the video unit, a writing unit to produce the bars according to the real-time data of the positional coordinates, an interface unit to transmit data between the signal processing unit and the exterior computer. The utility model is applied to the filed of projection equipment.
Description
Technical field
The utility model relates to a kind of projector and optical projection system, relates in particular to a kind of have photoelectricity location and interactive writing function projector of Infrared Transmission and optical projection system.
Background technology
At present, projector combines with writing function or electronic whiteboard function and is applied to occasions such as phone education, meeting, demonstration, speech more and more at large.The writing function here is meant that the user can directly utilize operations such as electronic pen is write, picture on projection screen when projector's projection.The user can directly carry out operations such as interactive education, panel discussion, demonstration on the projection screen or on electronic whiteboard.Existing three kinds of technical schemes can realize this purpose.
First kind of technical scheme is to utilize localization by ultrasonic, and the information between electronic pen and the receiver adopts Infrared Transmission.The product receiver volume that this technology forms is urinated in carrying, but it is limited by the volume, power of ultrasonic generator etc., can't large tracts of land cover, the electronic pen nib is bigger, response time is slow, can't realize long draw teacher's pointer function, also can't realize integrated projector.
Second kind of technical scheme is to place solenoid in the behind of a personality board (electronic whiteboard), utilize the electromagnetic induction between pen and the coil to realize the location, and projector can only project on this piece personality board.Its volume is big, cost is high, can not carry, and can't realize integrated projector.
The third technical scheme is to utilize controller control computer mouse to move up and down to deliver to projection module again with behind the image integration of computing machine output through the electronic whiteboard resume module.This mode is feasible in theory, also can realize integrated projector, but because it is to realize writing, mapping function by 4 the key control mouse moving in upper and lower, left and right, and do not have the direct writing function of electronic pen, cause its writing speed slow, the user operates tired.
Summary of the invention
The purpose of this utility model is to address the above problem, a kind of have photoelectricity location and interactive writing function projector of Infrared Transmission and optical projection system are provided, it makes projector become the interactive integrated projector of writing with the projecting function combination, make projector disposable correction and all do when need not to use to proofread and correct at every turn and adjust before dispatching from the factory, make that user's use is convenient.
The technical solution of the utility model is: a kind of have photoelectricity location and an interactive writing function projector of Infrared Transmission, comprises projection module, and wherein, described projector also comprises: a light receiving unit receives the infrared light that external control devices sends; One image unit is taken the image of projection screen in real time; One signal processing unit, it further comprises: one proofreaies and correct mobile unit, moves the image that described image unit is taken, and makes it consistent with the image in the computing machine; Locating unit, the position coordinates of the described external control devices of signal real time record on projection screen that transmits according to described light receiving unit and image unit; One writing unit is according to the real time data generation lines of position coordinates; One interface unit transmits data between described signal processing unit and outer computer.
The above-mentioned photoelectricity that has is located and the interactive writing function projector of Infrared Transmission, and wherein, described light receiving unit comprises optical receiver and A/D change-over circuit, and described optical receiver receives infrared light and convert digital signal output to behind described A/D change-over circuit.
The above-mentioned photoelectricity that has is located and the interactive writing function projector of Infrared Transmission, wherein, described image unit comprises camera, optical band pass filter, imageing sensor, the real-time photographed screen image of described camera, imaging on described imageing sensor after described optical band pass filter is made Filtering Processing, and imaging signal exported.
The above-mentioned photoelectricity that has is located and the interactive writing function projector of Infrared Transmission, and wherein, described signal processing unit is made up of dsp processor, microcontroller and storer.
The above-mentioned photoelectricity that has is located and the interactive writing function projector of Infrared Transmission, wherein, it is characterized in that described interface unit is USB interface and/or RS-232 interface.
A kind of have photoelectricity location and an interactive writing function optical projection system of Infrared Transmission, comprises projector, projection screen, computing machine and external control devices, and wherein, described projector comprises: a light receiving unit receives the infrared light that external control devices sends; One image unit is taken the image of projection screen in real time; One signal processing unit, it further comprises: one proofreaies and correct mobile unit, moves the image that described image unit is taken, and makes it consistent with the image in the computing machine; Locating unit, the position coordinates of the described external control devices of signal real time record on projection screen that transmits according to described light receiving unit and image unit; One writing unit is according to the real time data generation lines of position coordinates; One interface unit transmits data between described signal processing unit and outer computer.
Described computing machine comprises: the state judging unit of an external control devices, the digital signal of the infrared signal of received signal processing unit output, the user mode of identification external control devices; One correction amount calculating unit, it comprises: a sampled point judging unit, judge whether the coordinate figure of sampled point satisfies preset value; One error calculation unit is calculated the coordinate difference of each sampled point and reference point; One AME evaluation unit, obtain described error calculation unit all coordinate differences mean value and export the correction mobile unit of described signal processing unit to.
The above-mentioned photoelectricity that has is located and the interactive writing function optical projection system of Infrared Transmission, and wherein, described external control devices comprises writes light pen, teacher's pointer.
The above-mentioned photoelectricity that has is located and the interactive writing function optical projection system of Infrared Transmission, and wherein, described light receiving unit comprises optical receiver and A/D change-over circuit, and described optical receiver receives infrared light and convert digital signal output to behind described A/D change-over circuit.
The above-mentioned photoelectricity that has is located and the interactive writing function optical projection system of Infrared Transmission, wherein, described image unit comprises camera, optical band pass filter, imageing sensor, the real-time photographed screen image of described camera, imaging on described imageing sensor after described optical band pass filter is made Filtering Processing, and imaging signal exported.
The above-mentioned photoelectricity that has is located and the interactive writing function optical projection system of Infrared Transmission, and wherein, described signal processing unit is made up of dsp processor, microcontroller and storer.
The utility model contrast prior art has following beneficial effect: the utility model is incorporated in the projector having photoelectricity location and the interactive writing function receiver of Infrared Transmission, because the relative distance between optical receiver, camera and the projection module is fixed, make projector need not in use to adjust again, thereby increased the facility in user's use greatly dispatching from the factory the previous crops treatment for correcting.
Description of drawings
Fig. 1 is the functional block diagram of a preferred embodiment of the utility model projector and optical projection system.
Fig. 2 is the block diagram that carries out refinement to embodiment illustrated in fig. 1.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 shows the functional block of a preferred embodiment of the utility model projector and optical projection system.See also Fig. 1, optical projection system 10 of the present utility model is made up of external control devices 11, projection screen 12, projector 13 and computing machine 14.In the present embodiment, external control devices 11 is to write light pen, can certainly be teacher's pointer etc.Projector 13 comprises projection module 131, light receiving unit 132, image unit 133, signal processing unit 134 and interface unit 135 again.Signal processing unit 134 comprises again proofreaies and correct mobile unit 1341, positioning unit 1342 and writing unit 1343.Computing machine 14 comprises external control devices state judging unit 141 and correction amount calculating unit 142.Wherein correction amount calculating unit 142 comprises sampled point judging unit 1421, error calculation unit 1422 and AME evaluation unit 1423 again.Signal processing unit 134 links to each other with computing machine 14 by interface unit 135, and computing machine 14 links to each other with projection module 131 by data line.
The principle of work of this optical projection system and projector is described below.Projection module 131 is shown to the image projection in the computing machine on the projection screen 12, and the image that image unit 133 absorbs can be not consistent with the image in the computing machine because of the shift in position of image unit 133.Therefore, before each the use, the image that image unit 133 absorbs must be adjusted to consistent with the image in the computing machine.Because projection module 131 is arranged on projector 13 inside with image unit 133 and light receiving unit 132, relative position is fixing, thus needn't before each the use, all adjust image, and only need before dispatching from the factory, to adjust once to get final product.At first set a plurality of reference points on projection screen 12, the distance between per two reference points equates, for example can equidistantly set 9 reference points, and note the coordinate of these 9 reference points in computing machine 14.The user opens optical projection system, uses external control devices 11 on projection screen 12 each reference point to be sampled, and the coordinate of each sampled point is admitted to the error calculation unit 1422 of computing machine, calculates the coordinate difference of sampled point and corresponding reference point.This coordinate difference is admitted to sampled point judging unit 1421, in this judging unit 1421 preset value is arranged.When the coordinate difference of sampled point and corresponding reference point during less than this preset value, this sampled point is with selected.For each reference point on the projection screen 12, all find suitable sampled point and note the coordinate difference of 9 sampled points and corresponding reference point in above-mentioned mode.These 9 coordinate differences are admitted to AME evaluation unit 1423, obtain the correction mobile unit 1341 that exports projector internal signal processing unit behind the mean value of all coordinate differences to.This correction mobile unit 1341 is adjusted to consistent with the image in the computing machine 14 according to the image that the mean value dollying unit 133 of this coordinate difference absorbs.
In use, external control devices 11 moves on projection screen 12, and opertaing device 11 is provided with a plurality of buttons, the function that each button is corresponding different, and such as writing function, mouse function etc.After pressing different buttons, the infrared transmitter that is arranged on the opertaing device 11 sends different pulsed infrared signals.Light receiving unit 132 receives this infrared signal, after signal processing unit 134 is processed into digital signal corresponding, be transferred to the external control devices state judging unit 141 of computing machine again by interface unit 135, identify the current user mode of external control devices 11.Meanwhile, image unit 133 is taken the image of projection screen in real time and is given signal processing unit 134 with image signal transmission.After signal processing unit 134 receives the infrared signal and image unit 133 image transmitted signals of light receiving units 132 transmission, positioning unit 1342 wherein according to the emissive source of this infrared signal determine in the position on the projected image external control devices 11 on projection screen 12 position coordinates and note.Along with external control devices 11 moving on projection screen 12, its positional information also continuously goes on record.If current keypress function is a writing function, then writing unit 1343 connects into lines according to the position coordinates of all external control deviceses of noting on projection screen, thereby realizes writing function.
Fig. 2 is the further refinement of Fig. 1 embodiment.Please be simultaneously referring to Fig. 2, light receiving unit 132 is made up of an optical receiver 201 and an A/D change-over circuit 202, optical receiver 201 receives the infrared signal of external control devices 11 (for example writing light pen or teacher's pointer), exports after an A/D change-over circuit 202 converts digital signal to.Image unit 133 comprises camera 203, optical band pass filter 204 and imageing sensor 205.Camera 203 is taken the image of projection screen in real time, imaging output on imageing sensor 205 after optical band pass filter 204 Filtering Processing.Signal processing unit 134 is made up of the 2nd A/D change-over circuit 206, dsp processor 207, microcontroller 208 and storer 209.The 2nd A/D change-over circuit 206 becomes digital signal with the imaging analog signal conversion of imageing sensor 205 outputs.The one A/D change-over circuit 202 and the 2nd A/D change-over circuit 206 separately with digital data transmission to dsp processor 207.Dsp processor 207 is given computing machine 14 by interface unit 135 with infrared signal transmission on the one hand, determine according to infrared signal and picture signal on the other hand and the real-time coordinate of record external control devices 11 on projection screen 12, and to all real-time coordinate tracking processing, thereby realize mouse or writing function.The inter-process of microcontroller 208 control dsp processors 207.Interface unit 135 is RS-232 interface 210 or USB interface 211 or its combination.
The foregoing description provides to being familiar with the person in the art and realizes or use of the present utility model; being familiar with those of ordinary skill in the art can be under the situation that does not break away from invention thought of the present utility model; the foregoing description is made various modifications or variation; thereby protection domain of the present utility model do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (10)
1 one kinds have photoelectricity location and the interactive writing function projector of Infrared Transmission, comprise projection module, it is characterized in that described projector also comprises:
One light receiving unit receives the infrared light that external control devices sends;
One image unit is taken the image of projection screen in real time;
One signal processing unit, it further comprises:
One proofreaies and correct mobile unit, moves the image that described image unit is taken, and makes it consistent with the image in the computing machine;
Locating unit, the position coordinates of the described external control devices of signal real time record on projection screen that transmits according to described light receiving unit and image unit;
One writing unit is according to the real time data generation lines of position coordinates;
One interface unit transmits data between described signal processing unit and outer computer.
2 according to claim 1ly have photoelectricity location and an interactive writing function projector of Infrared Transmission, it is characterized in that, described light receiving unit comprises optical receiver and A/D change-over circuit, and described optical receiver receives infrared light and convert digital signal output to behind described A/D change-over circuit.
3 according to claim 1ly have photoelectricity location and an interactive writing function projector of Infrared Transmission, it is characterized in that, described image unit comprises camera, optical band pass filter, imageing sensor, the real-time photographed screen image of described camera, imaging on described imageing sensor after described optical band pass filter is made Filtering Processing, and imaging signal exported.
4 according to claim 1ly have photoelectricity location and an interactive writing function projector of Infrared Transmission, it is characterized in that described signal processing unit is made up of dsp processor, microcontroller and storer.
5 according to claim 1ly have photoelectricity location and an interactive writing function projector of Infrared Transmission, it is characterized in that described interface unit is USB interface and/or RS-232 interface.
6 one kinds have photoelectricity location and the interactive writing function optical projection system of Infrared Transmission, comprise projector, projection screen, computing machine and external control devices, it is characterized in that,
Described projector comprises:
One light receiving unit receives the infrared light that external control devices sends;
One image unit is taken the image of projection screen in real time;
One signal processing unit, it further comprises:
One proofreaies and correct mobile unit, moves the image that described image unit is taken, and makes it consistent with the image in the computing machine;
Locating unit, the position coordinates of the described external control devices of signal real time record on projection screen that transmits according to described light receiving unit and image unit;
One writing unit is according to the real time data generation lines of position coordinates;
One interface unit transmits data between described signal processing unit and outer computer;
Described computing machine comprises:
The state judging unit of one external control devices, the digital signal of the infrared signal of received signal processing unit output, the user mode of identification external control devices;
One correction amount calculating unit, it comprises:
One sampled point judging unit judges whether the coordinate figure of sampled point satisfies preset value;
One error calculation unit is calculated the coordinate difference of each sampled point and reference point;
One AME evaluation unit, obtain described error calculation unit all coordinate differences mean value and export the correction mobile unit of described signal processing unit to.
7 according to claim 6ly have photoelectricity location and an interactive writing function optical projection system of Infrared Transmission, it is characterized in that described external control devices comprises writes light pen, teacher's pointer.
8 according to claim 6ly have photoelectricity location and an interactive writing function optical projection system of Infrared Transmission, it is characterized in that, described light receiving unit comprises optical receiver and A/D change-over circuit, and described optical receiver receives infrared light and convert digital signal output to behind described A/D change-over circuit.
9 according to claim 6ly have photoelectricity location and an interactive writing function optical projection system of Infrared Transmission, it is characterized in that, described image unit comprises camera, optical band pass filter, imageing sensor, the real-time photographed screen image of described camera, imaging on described imageing sensor after described optical band pass filter is made Filtering Processing, and imaging signal exported.
10 according to claim 6ly have photoelectricity location and an interactive writing function optical projection system of Infrared Transmission, it is characterized in that described signal processing unit is made up of dsp processor, microcontroller and storer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044540 CN200944179Y (en) | 2006-08-04 | 2006-08-04 | Photoelectric location and projector of infrared writing and projection system equipped with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044540 CN200944179Y (en) | 2006-08-04 | 2006-08-04 | Photoelectric location and projector of infrared writing and projection system equipped with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200944179Y true CN200944179Y (en) | 2007-09-05 |
Family
ID=38718815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044540 Expired - Lifetime CN200944179Y (en) | 2006-08-04 | 2006-08-04 | Photoelectric location and projector of infrared writing and projection system equipped with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200944179Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957545A (en) * | 2010-08-10 | 2011-01-26 | 深圳雅图数字视频技术有限公司 | Projector |
| CN102419659A (en) * | 2010-09-27 | 2012-04-18 | 南京芒冠光电科技股份有限公司 | Interactive projector system |
| CN104090453A (en) * | 2014-06-24 | 2014-10-08 | 苏州佳世达光电有限公司 | Projector light source drive system and projector |
| CN104464392A (en) * | 2014-12-03 | 2015-03-25 | 中国计量学院 | Control method of writing blackboard projection device for teaching |
| CN105426023A (en) * | 2015-12-31 | 2016-03-23 | 田雪松 | Information interaction method and system |
| CN107203286A (en) * | 2017-06-13 | 2017-09-26 | 余昆 | Possesses the laser pen of editting function |
| CN107846543A (en) * | 2017-12-11 | 2018-03-27 | 苏州腾邦科技有限公司 | Home intelligent projection TV interactive system |
-
2006
- 2006-08-04 CN CN 200620044540 patent/CN200944179Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957545A (en) * | 2010-08-10 | 2011-01-26 | 深圳雅图数字视频技术有限公司 | Projector |
| CN101957545B (en) * | 2010-08-10 | 2012-07-11 | 深圳雅图数字视频技术有限公司 | Projector |
| CN102419659A (en) * | 2010-09-27 | 2012-04-18 | 南京芒冠光电科技股份有限公司 | Interactive projector system |
| CN104090453A (en) * | 2014-06-24 | 2014-10-08 | 苏州佳世达光电有限公司 | Projector light source drive system and projector |
| CN104090453B (en) * | 2014-06-24 | 2016-05-11 | 苏州佳世达光电有限公司 | A kind of projector light source driving system and projecting apparatus |
| CN104464392A (en) * | 2014-12-03 | 2015-03-25 | 中国计量学院 | Control method of writing blackboard projection device for teaching |
| CN105426023A (en) * | 2015-12-31 | 2016-03-23 | 田雪松 | Information interaction method and system |
| CN107203286A (en) * | 2017-06-13 | 2017-09-26 | 余昆 | Possesses the laser pen of editting function |
| CN107846543A (en) * | 2017-12-11 | 2018-03-27 | 苏州腾邦科技有限公司 | Home intelligent projection TV interactive system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200944179Y (en) | Photoelectric location and projector of infrared writing and projection system equipped with the same | |
| US11625841B2 (en) | Localization and tracking method and platform, head-mounted display system, and computer-readable storage medium | |
| CN102662498B (en) | A kind of wireless control method of projection demonstration and system | |
| CN100590577C (en) | Touch screen positioning device and method thereof | |
| US20230004218A1 (en) | Virtual reality system | |
| JP2004517406A (en) | Computer vision based wireless pointing system | |
| US20140111433A1 (en) | Motion compensation in an interactive display system | |
| US7377650B2 (en) | Projection of synthetic information | |
| CN104423721A (en) | Frameless multipoint touch man-machine interaction method and system based on radar eye | |
| CN102722254A (en) | Method and system for location interaction | |
| CN103365617A (en) | Projection control system, projection control device and projection control method | |
| US20110084915A1 (en) | Adjustment system and method for camera lens | |
| CN202798942U (en) | Image sensor, camera and electronic product using image sensor | |
| CN112673276A (en) | Ultrasonic sensor | |
| US9292106B2 (en) | Interface apparatus using motion recognition, and method for controlling same | |
| WO2015013937A1 (en) | Display system with interactive function | |
| CN100462900C (en) | Method and equipment for making interactive operation with display system | |
| KR20180036205A (en) | Smart table apparatus for simulation | |
| JP2014526183A (en) | Sensor means for a television receiver. | |
| KR100980261B1 (en) | Pointing/interface system | |
| CN103529960A (en) | Air mouse based on magnetic positioning technology and method | |
| KR20090028934A (en) | 3-d pointing device and method for operating 3-d location in thereof | |
| CN215576571U (en) | Novel touch display device | |
| CN103558921A (en) | Floor screen projection interaction system | |
| CN204302914U (en) | There is the display device of motion capture and audio identification module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070905 |
|
| EXPY | Termination of patent right or utility model |