CN201212989Y - Laser scanning type touch screen - Google Patents
Laser scanning type touch screen Download PDFInfo
- Publication number
- CN201212989Y CN201212989Y CNU2008200640633U CN200820064063U CN201212989Y CN 201212989 Y CN201212989 Y CN 201212989Y CN U2008200640633 U CNU2008200640633 U CN U2008200640633U CN 200820064063 U CN200820064063 U CN 200820064063U CN 201212989 Y CN201212989 Y CN 201212989Y
- Authority
- CN
- China
- Prior art keywords
- laser
- screen
- touch
- processing unit
- axis
- 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)
Abstract
The utility model provides a laser-scanning touch screen which relates to the technical field of photoelectric-single processing and aims to solve the technical problems of the common infrared touch screen that infrared light-emitting diodes are excessive, the systematical stability is poor, and the like. The laser-scanning touch screen comprises a display screen, a reflecting strip or reflecting mirror, a CPU system control circuit, and an interface controlling circuit, wherein any side of the touch screen is provided at least one laser-scanning emitting unit, and the other corresponding side is provided at least one laser receiving and processing unit. The utility model is applicable to the designing and manufacturing industry of touch screens needing high stability.
Description
Technical field
The utility model relates to electric numerical data processing technology field, particularly a kind of touch-screen that uses the laser scanning location technology.
Background technology
General touch-screen adopts infrared touch system substantially at present, its mode is for by by being installed in X, Y direction arrange uniform infrared transmitting tube and infrared receiving tube around along the touch area, control and driving circuit drive infrared transmitting tube and infrared receiving tube under the control of MCU run time version, the infrared ray matrix that corresponding scanning formation directions X and Y direction are intersected anyhow.When touching, finger or other object will block the infrared ray anyhow through this point, judge the position of touch point at screen by control system.
Because this touch-screen of rare close degree direct influence that infrared transmitting tube and infrared receiving tube distribute is to touching the resolution characteristic of body, therefore along with the increasing of shielding the body size, the number of infrared transmitting tube and infrared receiving tube also can be at double increase (infrared transmitting tube and infrared receiving tube about 500 pairs being arranged) such as 85 o'clock infrared touch panels, if a certain or a few Zhi Guanzi occur unusual, the capital influences the performance of whole touch screen, and therefore there are many drawbacks such as system stability is not high, system debug is complicated, hardware cost height in general infrared touch panel at present.
Summary of the invention
The utility model is intended to solve technical matterss such as the infraluminescence pipe of common infrared touch panel is too many, system stability difference, so that a kind of system stability height, debugging is simple, hardware cost is low laser scan type touch-screen to be provided.
The purpose of this utility model is achieved through the following technical solutions.
Laser scan type touch-screen of the present utility model, display screen (14), reflection bar or catoptron, cpu system control circuit, interface control circuit are arranged, wherein the touch-screen top is provided with a laser scanning transmitter unit (1) or laser pick-off processing unit at least, an its following corresponding laser pick-off processing unit (2) or laser scanning transmitter unit of being provided with at least, touch-screen the right is provided with a laser scanning transmitter unit (3) or laser pick-off processing unit, a corresponding laser pick-off processing unit (4) or the laser scanning transmitter unit of being provided with at least in its left side at least.
Laser scan type touch-screen of the present utility model, wherein said laser scanning transmitter unit are to utilize the single-line type scanner of diode as light source.
Laser scan type touch-screen of the present utility model, wherein said single-line type scanner is a rotary mirror type, the mirror of quivering or other forms of single-line type scanner.
Laser scan type touch-screen of the present utility model, wherein said laser pick-off processing unit is connected and composed in turn by following circuit, photoelectric switching circuit, signal conditioning circuit, signal processing circuit, interface output circuit.
Laser scan type touch-screen of the present utility model, wherein said laser scanning transmitter unit and recruiting unit can be located at the optional position on touch-screen four limits.
Laser scan type touch-screen of the present utility model, wherein said reflection bar is made of reflection bar or the catoptron of being located at the regular arrangement on touch-screen four limits.
The beneficial effect of the utility model laser scan type touch-screen:
1. system stability height;
2. debugging is simple;
3. hardware cost is low.
Description of drawings
Fig. 1 front view
Fig. 2 circuit system schematic diagram
Fig. 3 receives the processing unit circuit theory diagrams
Fig. 4 Laser Transmission path is at conplane synoptic diagram
Fig. 5 Laser Transmission path is at conplane signal wave synoptic diagram---when touch received signal waveform is arranged
Fig. 6 Laser Transmission path is at conplane signal wave synoptic diagram---received signal waveform during no touch
Fig. 7 Laser Transmission path is at the synoptic diagram of Different Plane
Fig. 8 Laser Transmission path is at the signal wave synoptic diagram of Different Plane---when touch received signal waveform is arranged
Fig. 9 Laser Transmission path is at the signal wave synoptic diagram of Different Plane---received signal waveform during no touch
Single emission of Figure 10 and receiver module synoptic diagram
Number in the figure explanation: 1 laser scanning transmitter unit (X-axis), 2 laser pick-off processing units (X-axis), 3 laser scanning transmitter units (Y-axis), 4 laser pick-off processing units (Y-axis), 5 reflection bars or catoptron, 6 reflection bars or catoptron, 7 touch points, 8 laser scanning transmitter units (X-axis), 9 laser scanning transmitter units (Y-axis), 10 laser pick-off processing units (X/Y axle), 11 touch points, 12 reflection bars or catoptron, 13 reflection bars or catoptron, 14 display screens, 15 laser scanning emissive sources, 16 laser pick-off processing units, 17 reflection bars, 18 reflection bars, 19 reflection bars, 20 reflection bars, 21 touch points
Embodiment
The utility model detailed structure, application principle, effect and effect with reference to accompanying drawing 1-9, are illustrated by following embodiment.
Embodiment one
Consult Fig. 1,2, shown in 3, laser scan type touch-screen of the present utility model, include touch-screen 14, reflection bar or catoptron, the cpu system control circuit, interface control circuit, wherein the touch-screen top is provided with a laser scanning transmitter unit (X-axis) 1 (rotary mirror type or the mirror one-line scanning device that quivers), its bottom is provided with a laser pick-off processing unit (X-axis) 2, this laser pick-off processing unit is by photoelectric switching circuit, signal conditioning circuit, signal processing circuit, the interface output circuit constitutes, touch-screen the right is provided with a laser scanning transmitter unit (Y-axis) 3 (rotary mirror type or the mirror one-line scanning device that quivers), and its left side is provided with a laser pick-off processing unit (Y-axis) 4.
The touch-screen workflow of present embodiment is as follows:
1. the startup touch-screen is positioned at the laser scanning transmitter unit (X-axis) 1 of top and laser scanning transmitter unit (Y-axis) 3 work that are positioned at the right by the control of cpu system control circuit.The gated sweep angle makes it to reach respectively all standing to touch-screen X-axis and Y direction.Opening the laser pick-off processing unit (Y-axis) 4 that is positioned at following laser pick-off processing unit (X-axis) 2 and is positioned at the left side simultaneously receives by the laser signal after the two-stage reflection.Handle respectively X, Y-axis to all reflected signals and by the sequence number order (1,2,3 ... .n) preserve the intensity of its signal.
2. according to (data of preserving in the step 1) (intensity of reflected signal), according to the analysis of signal, judging has no touch, if having then preserve the positional information (i.e. the sequence number of Bao Cuning) of touched point.
3. because reflection channel is evenly distributed on X, the Y-axis, and the preservation sequence number of the signal of reception is directly proportional with the axial distance of X, Y-axis, go out the coordinate of touch point according to the positional information calculation of (step 2) judgement.
4. by the touch system interface, the touch point coordinates transmission that step 3 is drawn is in computer system;
5. return 1, begin to carry out new scanning.
Embodiment two
When Laser Transmission path during on same plane, consult shown in Fig. 2,3,4,5,6, laser scan type touch-screen of the present utility model, include touch-screen, reflection bar or catoptron, cpu system control circuit, interface control circuit, wherein the touch-screen lower right-hand corner is provided with a laser scanning transmitter unit (X-axis) 8 (mirror of quivering one-line scanning device), place, the lower right corner is provided with a laser scanning transmitter unit (Y-axis) 9 (mirror of quivering one-line scanning device), and the upper left corner is provided with a laser pick-off processing unit 10 (X/Y axle).
The touch-screen workflow of present embodiment is as follows:
The laser that laser scanning transmitter unit 8 (X-axis) sends is mapped on (reflection bar or the catoptron 12) of screen body bottom successively uniformly, the suitable reflection angle that reflection bar or catoptron are set makes light through reflection bar or mirror reflects fully perpendicular to X-direction, and this light is shielded all to be focused on laser pick-off processing unit 10 (X-axis) behind (reflection bar or catoptron 13) secondary reflection of body top and receive and handle.Laser pick-off processing unit 10 (X-axis) can receive all signals (as Fig. 6) that laser scanning transmitter unit 8 (X-axis) sends during the no touch body in the screen body; Passage was kept off when scanning ray was swept to (x4) when in the screen body touch body (touch point 11) being arranged, the signal waveform (as Fig. 5) that laser pick-off processing unit 10 (X-axis) receives, be easy to judge touch point position according to the situation of change that receives waveform, because reflection bar or catoptron are to be evenly distributed on X-direction, therefore the pulse number in the waveform is X-axis reflection bar or catoptron number, and the coordinate position of pulse position and X-axis is linear.Just can calculate the touch coordinate of X-axis according to the pulse numbering of signal attenuation point.Y-axis processing mode and X-axis are similar.
Embodiment three
When Laser Transmission path during not on same plane, consult Fig. 2,3,7,8, shown in 9, laser scan type touch-screen of the present utility model, include touch-screen, reflection bar or catoptron, the cpu system control circuit, interface control circuit, wherein the touch-screen top is provided with a laser scanning transmitter unit (X-axis) 1 (rotary mirror type one-line scanning device), its bottom is provided with a laser pick-off processing unit (X-axis) 2, this laser pick-off processing unit is by photoelectric switching circuit, signal conditioning circuit, signal processing circuit, the interface output circuit constitutes, touch-screen the right is provided with a laser scanning transmitter unit (Y-axis) 3 (rotary mirror type one-line scanning device), and its left side is provided with a laser pick-off processing unit (Y-axis) 4.
The touch-screen workflow of present embodiment is as follows:
The laser that laser scanning transmitter unit (X-axis) 1 sends is mapped on (reflection bar or the catoptron 6) of screen body bottom successively uniformly, the suitable reflection angle that reflection bar or catoptron are set makes light through reflection bar or mirror reflects fully perpendicular to X-direction, and this light is shielded all to be focused on laser pick-off processing unit (X-axis) 2 behind (reflection bar or catoptron 5) secondary reflection of body top and receive and handle.Laser pick-off processing unit (X-axis) 2 can receive all signals (as Fig. 9) that laser scanning transmitter unit (X-axis) 1 sends during the no touch body in the screen body; Passage was kept off when scanning ray was swept to (x4) when in the screen body touch body (touch point 7) being arranged, laser pick-off processing unit (X-axis) 2 receives signal waveform (as Fig. 8), be easy to judge touch point position according to the situation of change that receives waveform, because reflection bar or catoptron are to be evenly distributed on X-direction, therefore the pulse number in the waveform is X-axis reflection bar or catoptron number, and the coordinate position of pulse position and X-axis is linear.Just can calculate the touch coordinate of X-axis according to the pulse numbering of signal attenuation point.Y-axis processing mode and X-axis are similar.(wherein the dotted portion in the light transmission path should be on the not coplanar of Petting Area.Such as with modes such as glass separate)
Embodiment four:
Consult shown in Figure 10.The laser that laser scanning emissive source 15 sends is mapped on the reflection bar 20 of screen body left side reflection bar 18, bottom successively uniformly, the suitable reflection angle that reflection bar is set makes through the light of reflection bar reflection fully perpendicular to Y-axis, perpendicular to X-direction, this light is shielded all to be focused on laser pick-off processing unit 16 behind reflection bar 17 secondary reflections of right-hand reflection bar of body 19, top and receives and handle.In the screen body, receive processing unit during the no touch body and can receive all signals that Y-axis, X-axis scanning emissive source are sent; Scanning ray is kept off when in the screen body touch body (touch point 21) being arranged, be easy to judge touch point position according to the situation of change that receives waveform, because reflection strip is to be evenly distributed on Y-axis, X-direction, therefore the pulse number in the waveform is X-axis reflection strip number, and the coordinate position of pulse position and X-axis is linear.Just can calculate the touch coordinate of X-axis according to the pulse numbering of signal attenuation point.Y-axis processing mode and X-axis are similar.
Therefore, adopt laser scan type touch-screen of the present utility model, can effectively solve the infrared transmitting tube of at present general common infrared touch panel and this touch-screen of rare close degree direct influence that infrared receiving tube distributes to touching the technical matters of body resolution characteristic, adopt this laser scan type touch-screen to have plurality of advantages such as system stability height, debugging is simple, hardware cost is low.
Claims (7)
1. laser scan type touch-screen, include display screen (14), reflection bar or catoptron, cpu system control circuit, interface control circuit, it is characterized in that: the arbitrary limit of touch-screen is provided with a laser scanning transmitter unit at least, and its corresponding another side is provided with a laser pick-off processing unit at least.
2. laser scan type touch-screen as claimed in claim 1, it is characterized in that: described touch-screen top is provided with a laser scanning transmitter unit (1) or laser pick-off processing unit at least, an its following corresponding laser pick-off processing unit (2) or laser scanning transmitter unit of being provided with at least, touch-screen the right is provided with a laser scanning transmitter unit (3) or laser pick-off processing unit, a corresponding laser pick-off processing unit (4) or the laser scanning transmitter unit of being provided with at least in its left side at least.
3. laser scan type touch-screen as claimed in claim 1 is characterized in that: described laser scanning transmitter unit is to utilize the single-line type scanner of diode as light source.
4. laser scan type touch-screen as claimed in claim 3 is characterized in that: described single-line type scanner is the rotary mirror type or the mirror of quivering.
5. laser scan type touch-screen as claimed in claim 1 is characterized in that: described laser pick-off processing unit is connected and composed in turn by following circuit, photoelectric switching circuit, signal conditioning circuit, signal processing circuit, interface output circuit.
6. laser scan type touch-screen as claimed in claim 1 is characterized in that: described laser scanning transmitter unit and laser pick-off processing unit can be located at the optional position on touch-screen four limits.
7. laser scan type touch-screen as claimed in claim 1 is characterized in that: described reflection bar is made of reflection bar or the catoptron of being located at the regular arrangement on touch-screen four limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200640633U CN201212989Y (en) | 2008-07-02 | 2008-07-02 | Laser scanning type touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200640633U CN201212989Y (en) | 2008-07-02 | 2008-07-02 | Laser scanning type touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212989Y true CN201212989Y (en) | 2009-03-25 |
Family
ID=40497166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200640633U Expired - Lifetime CN201212989Y (en) | 2008-07-02 | 2008-07-02 | Laser scanning type touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201212989Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010108304A1 (en) * | 2009-03-27 | 2010-09-30 | 宸鸿光电科技股份有限公司 | Touch device, its laser light source set and its laser light source structure |
| CN102707845A (en) * | 2012-06-18 | 2012-10-03 | 广州视睿电子科技有限公司 | Touch system based on infrared signal identification |
| CN102778978A (en) * | 2012-06-18 | 2012-11-14 | 广州视睿电子科技有限公司 | Touch system based on infrared light identification |
| CN102789341A (en) * | 2012-07-20 | 2012-11-21 | 创维光电科技(深圳)有限公司 | Infrared laser touch device and touch detection method |
| CN105280031A (en) * | 2015-11-19 | 2016-01-27 | 华蓥市双河第二小学 | A multimedia teaching system |
| CN105319825A (en) * | 2015-11-19 | 2016-02-10 | 华蓥市双河第二小学 | Multimedia teaching system equipped with recording apparatus |
| CN105469650A (en) * | 2015-11-19 | 2016-04-06 | 华蓥市双河第二小学 | Teaching system |
| CN107608570A (en) * | 2017-09-30 | 2018-01-19 | 上海理工大学 | What laser ionization air was imaged can touch-control system and touch-control detection method |
| WO2018049764A1 (en) * | 2016-09-19 | 2018-03-22 | 广州视源电子科技股份有限公司 | Tdr scan-type touch screen, touch scan locating method, and touch liquid crystal display screen |
| CN109189275A (en) * | 2018-08-30 | 2019-01-11 | 业成科技（成都）有限公司 | Infrared ray transceiving unit, infrared touch control module and touch control display system |
-
2008
- 2008-07-02 CN CNU2008200640633U patent/CN201212989Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010108304A1 (en) * | 2009-03-27 | 2010-09-30 | 宸鸿光电科技股份有限公司 | Touch device, its laser light source set and its laser light source structure |
| US8791923B2 (en) | 2009-03-27 | 2014-07-29 | Tpk Touch Solutions Inc. | Touching device, laser source module, and laser source structure thereof |
| CN102707845A (en) * | 2012-06-18 | 2012-10-03 | 广州视睿电子科技有限公司 | Touch system based on infrared signal identification |
| CN102778978A (en) * | 2012-06-18 | 2012-11-14 | 广州视睿电子科技有限公司 | Touch system based on infrared light identification |
| CN102789341A (en) * | 2012-07-20 | 2012-11-21 | 创维光电科技(深圳)有限公司 | Infrared laser touch device and touch detection method |
| CN102789341B (en) * | 2012-07-20 | 2015-06-24 | 创维光电科技(深圳)有限公司 | Infrared laser touch device and touch detection method |
| CN105280031A (en) * | 2015-11-19 | 2016-01-27 | 华蓥市双河第二小学 | A multimedia teaching system |
| CN105319825A (en) * | 2015-11-19 | 2016-02-10 | 华蓥市双河第二小学 | Multimedia teaching system equipped with recording apparatus |
| CN105469650A (en) * | 2015-11-19 | 2016-04-06 | 华蓥市双河第二小学 | Teaching system |
| WO2018049764A1 (en) * | 2016-09-19 | 2018-03-22 | 广州视源电子科技股份有限公司 | Tdr scan-type touch screen, touch scan locating method, and touch liquid crystal display screen |
| CN107608570A (en) * | 2017-09-30 | 2018-01-19 | 上海理工大学 | What laser ionization air was imaged can touch-control system and touch-control detection method |
| CN109189275A (en) * | 2018-08-30 | 2019-01-11 | 业成科技（成都）有限公司 | Infrared ray transceiving unit, infrared touch control module and touch control display system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201212989Y (en) | Laser scanning type touch screen | |
| CN102622135B (en) | Touch screen with infrared rays transmitted inside screen body and method for identifying touch points | |
| KR101626689B1 (en) | Infrared touch module, infrared touch screen panel and display device | |
| CN102622133A (en) | Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen | |
| CN101930306A (en) | Multi-touch device and detection method thereof | |
| CN103558949A (en) | Infrared touch screen, method and system for suspension touch control | |
| KR20090092878A (en) | Infrared ray touch screen | |
| CN101493740B (en) | Method for identifying multiple true touch point by infrared touch screen | |
| US20230367426A1 (en) | Display device | |
| CN104156123B (en) | A kind of infrared touch panel and display device | |
| CN102053761A (en) | Touch screen and touch system | |
| US20120162137A1 (en) | Electronic device with touch input function | |
| CN101382859A (en) | Photoelectric emission and receive structure for infrared touch screen | |
| CN104834409A (en) | Optical image type touch system and touch image processing method | |
| CN202372961U (en) | Infrared touch screen capable of changing transmission path of infrared light | |
| CN201741134U (en) | Infrared transmitting tube and touch control screen | |
| CN102789341B (en) | Infrared laser touch device and touch detection method | |
| CN201548938U (en) | Touch screen and touch system | |
| CN204595816U (en) | Infrared touch panel total reflection light line structure and infrared touch panel | |
| CN2927174Y (en) | Infrared anti-interference touching device | |
| CN202033736U (en) | Infrared touch screen | |
| CN201465074U (en) | Multi-point touch infrared touch screen | |
| CN101339476A (en) | Method for recognizing touch screen touch point for laser range finding | |
| CN202771400U (en) | Optical touch screen changing transmission path of lights | |
| CN105260051A (en) | Touch driving circuit and touch display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090325 |