CN104102394A - Optical multi-point touch control equipment and method - Google Patents
Optical multi-point touch control equipment and method Download PDFInfo
- Publication number
- CN104102394A CN104102394A CN201410143314.7A CN201410143314A CN104102394A CN 104102394 A CN104102394 A CN 104102394A CN 201410143314 A CN201410143314 A CN 201410143314A CN 104102394 A CN104102394 A CN 104102394A
- Authority
- CN
- China
- Prior art keywords
- touch
- camera
- image
- front panel
- optical multi
- 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.)
- Pending
Links
Landscapes
- Position Input By Displaying (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides optical multi-point touch control equipment and an optical multi-point touch control method, and belongs to the field of multi-point touch control. The optical multi-point touch control equipment comprises a front panel and a back panel which is arranged at the back of the front panel, wherein the front panel comprises an LCD (Liquid Crystal Display) front panel, and the back panel comprises backlight light sources, infrared light sources and a camera array; the backlight light sources are uniformly distributed to be used for providing beams required by displaying a picture, and the infrared light sources are uniformly distributed to be used for illuminating a touch control object used for being captured by a camera; the camera array comprises a group of uniformly distributed cameras for capturing the picture of the touch control object; the surface of one side, facing a user, of the front panel is called as a display touch control surface, and any one position on the display touch control surface is positioned in the field of vision of at least two cameras.
Description
Technical field
The invention belongs to multi-point touch field, be specifically related to a kind of optical multi-touch Apparatus and method for.
Background technology
Existing multipoint-touch-technology comprises resistance-type, condenser type, surface acoustic wave, optics frame etc., wherein resistance-type requires pressure to be greater than certain value and just can perceive touch object, and condenser type, surface acoustic wave all require touch object must touch screen, the touch object of optics frame type within can only perception 5mm.That is to say, these technology are merely able to the information of perception finger or other touch control objects and touch-control surface contact point at present, and information is very barren.
Summary of the invention
The object of the invention is to solve the difficult problem existing in above-mentioned prior art, a kind of optical multi-touch Apparatus and method for is provided, can perception finger and other touch control objects (for example pen, model ship etc.) various raw informations when suspension, after contacting, comprising: the dynamics size of the motion track before contact with the change of distance of touch-control surface, while contacting, the shape of contactant are, the image information of contactant etc.Can, for further expanding man-machine interaction, provide user's experience of remarkable fluency that hardware foundation is provided.
The present invention is achieved by the following technical solutions:
An optical multi-touch equipment, comprises front panel and the rear panel that is arranged on its rear, and described front panel comprises LCD front panel;
Described rear panel comprises back light, infrared light supply and camera array, and described back light is evenly arranged, in order to provide display frame required light; Described infrared light supply is evenly arranged, and in order to the touch object that throws light on, for camera, catches; Described camera array comprises one group of camera of evenly arranging, in order to catch the picture of touch object;
Described front panel is called demonstration touch surface towards the surface of user's one side;
In described demonstration touch surface, arbitrary position is all within the visual field at least 2 cameras.
Described front panel comprises protection screen and/or diffusion sheet, and described protection screen is arranged on the top of LCD front panel, and described diffusion sheet is arranged on the below of LCD front panel.Protection screen and diffusion sheet all can be matched, and join that one of them is passable, all join also passablely for two, arrange as required.
Described protection screen, LCD front panel and arbitrary neighborhood in diffusion sheet two-layer bonded to together with, or three layers be bonded together successively, bonding employing be that refractive index is the transparent glue of 1.3-1.55.
Described protection screen is selected anti-dazzle tempered glass.
Described rear panel comprises astigmatism plate, and it is arranged on the top of back light, infrared light supply and camera array, and in described astigmatism plate, the position of corresponding each camera all has hole.
Described optical multi-touch equipment comprises reflector, and it is arranged on each side in the space forming between front panel and rear panel, the light in order to reflection from back light and infrared light supply.
Described optical multi-touch equipment comprises display driving system, image processing system and power-supply system:
Described display driving system, in order to receive the display from computing machine, drives described LCD front panel under the cooperation of back light, shows user interface;
The picture that described image processing system catches in order to receive camera, by analysis, carry out target identification, target range identification and target location identification, the most one or more users' operation, being converted to one or more targets and target is showing the projected position of touch surface and to the distance that shows touch surface, is offering computing machine;
Described power-supply system is in order to give this optical multi-touch equipment power supply.
Realize a method for optical multi-touch, described method comprises:
If one shows that touch surface and superjacent air space thereof are region R, among its visual field in the first camera and second camera, has 1 touch object to be arranged in region R;
Step 1: take pictures:
Under the triggering of synchronizing signal, the first camera and second camera are taken pictures and are obtained image region R simultaneously;
Step 2: distortion correction:
Image step 1 being photographed according to the rectification data of obtaining in advance carries out distortion correction, wherein, it is the first image C 1c that the image that the first camera is obtained is processed the image obtaining, and it is the second image C 2c that the image that second camera is obtained is processed the image obtaining;
Step 3: target identification:
By the first image C 1c and the second image C 2c are processed and find target.
Step 4: level identification and projected position identification:
The target identifying from center to the first image C 1c of the first camera is done line and is formed the first straight line, the target identifying from center to the second image C 2c of second camera is done line and is formed the second straight line, the position of the touch object that the intersection point of the first straight line and the second straight line is final reckoning in space;
By this intersection point, to demonstration touch surface, do vertical line, the coordinate of its intersection point is touch object at the coordinate that shows the projection in touch surface; The length of vertical line is touch object to the distance that shows touch surface.
In described step 1, the mistiming of the behavior of taking pictures of the first camera and second camera is less than or equal to 1 millisecond.
Described step 3 has been worked alone or synergistically by two steps below:
Step 3-1: single image target identification
By the first image C 1c and the second image C 2c are analyzed, find target;
Step 3-2: merge image object identification
The first image C 1c and the second image C 2c are incident upon apart from showing that the plane P h that touch surface height is h is upper, and the merging that then two width projection images superposeed, finds target.
Compared with prior art, the invention has the beneficial effects as follows: present device can perception levitated object, and can support to surpass the touch-control of 100 points, because its touch-control raw information is abundant, in conjunction with upper layer software (applications), can experience for user brings many good users, such as:
1, the motion track before contact: can anticipation user view etc.
2 with the change of distance of touch-control surface: can, not contacting under touch-control surface, carry out touch control operation etc.
Dynamics size while 3, contacting.
4, the shape of contactant: can get rid of some chaff interferences.Especially present, large touch-screen more and more moves towards people's daily life, and anti-interference is a more and more urgent need.
5, the image information of contactant: can identify image, automatically recognition object, then carries out this object certain operations, such as: relevant information is searched for, is taken pictures to object etc.
Accompanying drawing explanation
Fig. 1 is the structural drawing of optical multi-touch equipment of the present invention.
Fig. 2 is the schematic diagram of the inventive method.
Fig. 3 is the distortion correction schematic diagram in the inventive method.
Fig. 4-1st, from the image C 1c after treatment of camera C1.
Fig. 4-2nd, from the image C 2c after treatment of camera C2.
Fig. 5-1st, project on apart from touch surface 5cm and merge after figure.
Fig. 5-2nd, project on apart from touch surface 10cm and merge after figure.
Fig. 6 is the schematic diagram of level identification and projected position identification in the inventive method.
Fig. 7 is an embodiment of present device.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
The present invention is at contact panel rear installation infrared light source and camera array, and under the irradiation of infrared light supply, camera catches the image of the touch objects such as finger; For arbitrary position in touch surface, there is the camera of two diverse locations, with different visual angles, catch its image, thereby form whole touch surface and this space of top certain distance thereof, carry out stereopsis seizure; This stereopsis is by the analysis of recognition system, whether the touch objects such as perception finger are present in touch surface top, determine that they arrive the distance of touch face, judge whether they touch touch face, and the deformation while contacting with touch face by them, calculating contact dynamics, offers upper layer software (applications), thereby realize perception levitated object, determine levitated object distance, judge whether levitated object contacts and calculate contact dynamics, for upper layer software (applications), realize good user's experience hardware foundation is provided.
The structural representation of a kind of optical multi-touch equipment based on LCD that Fig. 1 provides for the present embodiment, is respectively in figure:
1) front panel, comprising:
A) protection screen 101: be the thick anti-dazzle tempered glass of 5mm (can use 1mm～15mm) in the present embodiment, in order to robust touch face to be provided, protection LCD, while specifically implementing, can select suitable protection screen according to actual needs.
B) LCD panel 102: be LCD front panel (Cell) to be responsible for display frame.
C) diffusion sheet 103: be preferred, diffusion sheet is the light from back light in order to diffusion, and more uniform picture is provided.The parameter of diffusion sheet comprises transmittance and mist degree, and this is selected as required.
During concrete enforcement, can be not bonding between these three layers, also can glue two-layerly arbitrarily, or three is bonded together, in the present embodiment, the transparent glue that this three is 1.5 by refractive index is adhesively fixed, to eliminate light unnecessary reflection between three.
2) rear panel, comprising:
A) back light 302: in the present embodiment, adopt white LED lamp pearl array, in order to provide display frame required light, while specifically implementing, can adopt as required RGB-LED light source or CCFL (fluorescent tube, fluorescent tube).
B) infrared light supply 303: in the present embodiment, adopt 850nm infrared LED lamp pearl array or laser infrared light source etc., in order to illumination finger, wait and touch object, for camera, catch.During concrete enforcement, back light and infrared light supply both can be arranged on the dead astern of front panel, also can be arranged on back upper place, the back lower place or rear survey side, these determine according to actual needs, and for example Fig. 7 provides is exactly camera 301 and infrared light supply 303 to be arranged on to the embodiment of rear side
C) camera array: in the present embodiment, adopt 6 to the camera 301 of infrared-sensitive (while specifically implementing, number and the array of camera can be set according to the size of touch screen, as long as guarantee in touch surface that arbitrary position is all within the visual field in two different cameras.), in order to catch finger, wait the picture that touches object, offer image processing system.System is sent trigger pip with a fixed frequency (as 60 times per second) to camera array, and each camera starts to take pictures when receiving trigger pip.Make like this taking pictures of each camera synchronously carry out.Require the mutual gap of the actual photo opporunity of each camera to be less than or equal to 1ms (millisecond)
D) astigmatism plate 202: in the present embodiment, choosing has filled astigmatism plate, in order to further fuzzy back light, provides more uniform picture, has also played the effect of LCD front panel being carried out to thermal isolation simultaneously.
E) reflector 201: in the present embodiment, on 4 of plate facades, choosing has filled reflector in the back, in order to more effectively to utilize the light from back light and infrared light supply.
Back light is arranged and will be tried one's best evenly, avoids picture to occur dark space or speck.Infrared light supply is arranged and will be tried one's best evenly, makes the exposure value of each camera as far as possible consistent.Camera is arranged as far as possible evenly, can catch the object of which movement of whole viewing area.
3) display driving system 401: in order to receive the display (in the present embodiment, being HDMI, VGA or DVI) from computing machine, drive LCD front panel under the cooperation of back light, show user interface.
4) image processing system 403: image processing system: the picture catching in order to receive camera, by analysis, carry out target identification, target range identification and target location identification, the most one or more users' operation, being converted to one or more targets and target is showing the projected position of touch surface and to the information such as distance that show touch surface, is offering computing machine.
5) power-supply system 402: be back light, infrared light supply and the power supply of other electricity consumption devices.
In the present embodiment, front panel and rear panel combination form a rectangular parallelepiped, and wherein front panel (protection screen, LCD panel, diffusion sheet) forms the upper surface of rectangular parallelepiped; In rear panel, back light, infrared light supply and camera are arranged in rectangular parallelepiped lower surface, cover astigmatism plate above, on four facades, cover reflector.During concrete enforcement, front panel and rear panel can be arranged in parallel and also can not parallelly arrange.
The present invention realizes the method for optical multi-touch, specific as follows:
As mentioned above, all screen areas, all in the visual range at least two cameras.As shown in Figure 2; if screen area and superjacent air space 001 thereof are region R; among its visual field in the first camera C1 and second camera C2; there is a touch object 0002 to be arranged in region R simultaneously, will describe the position of equipment how to confirm object 0 of the present invention and the distance that distance shows touch surface 100 (protection screen adds liquid crystal front panel) below.If have a plurality of touch objects in this region, according to the following steps each touch object identified one by one.
Step 1: take pictures
Under the triggering of synchronizing signal, camera C1 and C2 take pictures to region R simultaneously, and both answer <1 millisecond at take pictures mistiming of behavior.
The required illumination of taking pictures is provided by infrared light supply.
Step 2: distortion correction
According to the rectification data of obtaining in advance, (use correction tool, on screen in the visible area of camera, show nxn dot matrix, by automatic program identification or the mode manually pressed, obtain the position (nxn camera picture internal coordinate point) of these nxn dot matrix in camera picture, so just obtain nxn the corresponding relation of putting in nxn of camera point and screen plane, with this, extrapolate the corresponding relation of point in each point on camera picture and screen plane, these corresponding relations are corrected data exactly.), the image photographing is carried out to distortion correction, and (gray-scale value of each point on the picture that camera is captured according to above-mentioned corresponding relation, is given identical gray-scale value in Flat-picture corresponding point, obtains like this gray level image after distortion correction.)。After treatment,, in a region R, be close to the straight grid of real touch surface, present in will the image after processing straight, as shown in Figure 3.
Image after treatment from C1 is called to C1c, from the image after treatment of C2, be called C2c.
This step is that follow-up space is calculated ready.
Step 3: target identification
This step is by two different step 3-1, and 3-2 has worked alone or synergistically:
Step 3-1: single image target identification
By the image to from C1 and C2 process distortion correction, C1c and C2c analyze, and find target, and target comprises finger tip, pen etc.The typical method adopting is high-pass filtering, by image is carried out to high-pass filtering, removes continuous region of variation, retains object most advanced and sophisticated, thus the target of finding.
Step 3-2: merge image object identification
C1c, C2c are incident upon to the plane P h that distance shows touch surface h, two width picture stacks are merged, be called CM (h), i.e. merging in the plane that is highly h: when when differing heights merges, the C1c degree overlapping with C2c is different, as shown in Fig. 5-1 and Fig. 5-2, when merging the true altitude of height h and touch object when basic identical, image can be substantially overlapping when merging in C1c and C2c for this touch object, thereby form the highlighted image that is easy to identification, as shown in Fig. 5-2.
Specifically, the calculated amount of step 3-1 is little, the calculated amount of step 3-2 is large, for the less demanding system of accuracy of identification, can adopt separately 3-1, the system that shows the object (such as only identifying 5 centimetres with internal object) that touch surface is nearer for a decipherment distance, can adopt separately 3-2, for the system of recognition accuracy (to failing to judge, erroneous judgement requires high), can two kinds of methods work alone, or collaborative work.Work alone as drawing two cover recognition results by two cover algorithms, finally unified judgement.Collaborative work, for by 3-1 coarse sizing target, is accurately judged at possible height layer by 3-2.
Fig. 4-1 is the image C 1c after treatment from camera C1, Fig. 4-2 are the image C 2c after treatment from camera C2, the upper projection of plane (5cm, 10cm) in different distance (is C1c from the focal plane of camera C1 and shown to distance the projective transformation that touch surface 100 distances are the plane of d, obtain picture C1c (d), the same C2c that processes, obtain picture C2c (d), two pictures are merged, obtain CM (d).In figure, be exemplified as CM (5cm) and CM (10cm) and merge after figure as shown in Fig. 5-1 and Fig. 5-2, after merging at differing heights, weak echo signal not easy to identify, has become the strong signal that is easy to identification, as the white portion in Fig. 5-2.
Step 4: level identification and projected position identification
As shown in Figure 6, two black block in Fig. 6 represent C1c and C2c, by C1c and C2c, can extrapolate respectively the possible position of object in space, these possible positions are arranged in two straight lines, article two, the position of the object that the intersection point of straight line is final reckoning in space, from this position, make vertical line to showing touch surface, can obtain following two information:
1, object is showing the coordinate of the projection of touch surface
2, object is to the distance that shows touch surface.
Specifically, in Fig. 6, black color lump is C1c and C2c, and the white point in two color lumps is the target identifying.From single camera, for a target of having identified, accurately known its position in picture after correction in step 3.The target (i.e. white point in figure) identifying from the line of centres of camera C1 to picture C1c, the three-dimensional space position of this object is inevitable on this straight line, and 501 in Fig. 6 is object possible positions that calculate target location in C1c.
In like manner, from looking of camera C2, can calculate object inevitable in by C2 to the extended line of line the white point in C2c, in Fig. 6, the 502nd, the object possible position that calculate target location in C2c, by two condition combinations, can know that object is physically located in the intersection point of two straight lines.
By this intersection point, to demonstration touch surface, do vertical line, the coordinate of its intersection point is object at the coordinate that shows the projection of touch surface, and in Fig. 6,503 is that object is in the position showing in touch surface 100; Intersection point is object to the distance that shows touch surface 100 to the distance of intersection point.
Technique scheme is one embodiment of the present invention, for those skilled in the art, the invention discloses on the basis of application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (10)
1. an optical multi-touch equipment, is characterized in that: described optical multi-touch equipment comprises front panel and the rear panel that is arranged on its rear, and described front panel comprises LCD front panel;
Described rear panel comprises back light, infrared light supply and camera array, and described back light is evenly arranged, in order to provide display frame required light; Described infrared light supply is evenly arranged, and in order to the touch object that throws light on, for camera, catches; Described camera array comprises one group of camera of evenly arranging, in order to catch the picture of touch object;
Described front panel is called demonstration touch surface towards the surface of user's one side;
In described demonstration touch surface, arbitrary position is all within the visual field at least 2 cameras.
2. optical multi-touch equipment according to claim 1, is characterized in that: described front panel comprises protection screen and/or diffusion sheet, and described protection screen is arranged on the top of LCD front panel, and described diffusion sheet is arranged on the below of LCD front panel.
3. optical multi-touch equipment according to claim 2; it is characterized in that: described protection screen, LCD front panel and arbitrary neighborhood in diffusion sheet two-layer bonded to together with; or three layers are bonded together successively, bonding employing be that refractive index is the transparent glue of 1.3-1.55.
4. optical multi-touch equipment according to claim 2, is characterized in that: described protection screen is selected anti-dazzle tempered glass.
5. optical multi-touch equipment according to claim 1, it is characterized in that: described rear panel comprises astigmatism plate, it is arranged on the top of back light, infrared light supply and camera array, and in described astigmatism plate, the position of corresponding each camera all has hole.
6. optical multi-touch equipment according to claim 1, it is characterized in that: described optical multi-touch equipment comprises reflector, it is arranged on each side in the space forming between front panel and rear panel, the light in order to reflection from back light and infrared light supply.
7. according to the optical multi-touch equipment one of claim 1～6 Suo Shu, it is characterized in that: described optical multi-touch equipment comprises display driving system, image processing system and power-supply system:
Described display driving system, in order to receive the display from computing machine, drives described LCD front panel under the cooperation of back light, shows user interface;
The picture that described image processing system catches in order to receive camera, by analysis, carry out target identification, target range identification and target location identification, the most one or more users' operation, being converted to one or more targets and target is showing the projected position of touch surface and to the distance that shows touch surface, is offering computing machine;
Described power-supply system is in order to give this optical multi-touch equipment power supply.
8. according to the method that realizes optical multi-touch of the optical multi-touch equipment one of claim 1-7 Suo Shu, it is characterized in that: described method comprises:
If one shows that touch surface and superjacent air space thereof are region R, among its visual field in the first camera and second camera, has 1 touch object to be arranged in region R;
Step 1: take pictures:
Under the triggering of synchronizing signal, the first camera and second camera are taken pictures and are obtained image region R simultaneously;
Step 2: distortion correction:
Image step 1 being photographed according to the rectification data of obtaining in advance carries out distortion correction, wherein, it is the first image C 1c that the image that the first camera is obtained is processed the image obtaining, and it is the second image C 2c that the image that second camera is obtained is processed the image obtaining;
Step 3: target identification:
By the first image C 1c and the second image C 2c are processed and find target.
Step 4: level identification and projected position identification:
The target identifying from center to the first image C 1c of the first camera is done line and is formed the first straight line, the target identifying from center to the second image C 2c of second camera is done line and is formed the second straight line, the position of the touch object that the intersection point of the first straight line and the second straight line is final reckoning in space;
By this intersection point, to demonstration touch surface, do vertical line, the coordinate of its intersection point is touch object at the coordinate that shows the projection in touch surface; The length of vertical line is touch object to the distance that shows touch surface.
9. method according to claim 8, is characterized in that: in described step 1, the mistiming of the behavior of taking pictures of the first camera and second camera is less than or equal to 1 millisecond.
10. method according to claim 9, is characterized in that: described step 3 has been worked alone or synergistically by two steps below:
Step 3-1: single image target identification
By the first image C 1c and the second image C 2c are analyzed, find target;
Step 3-2: merge image object identification
The first image C 1c and the second image C 2c are incident upon apart from showing that the plane P h that touch surface height is h is upper, and the merging that then two width projection images superposeed, finds target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143314.7A CN104102394A (en) | 2013-04-09 | 2014-04-09 | Optical multi-point touch control equipment and method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119507.4 | 2013-04-09 | ||
| CN 201310119507 CN103150063A (en) | 2013-04-09 | 2013-04-09 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN201410143314.7A CN104102394A (en) | 2013-04-09 | 2014-04-09 | Optical multi-point touch control equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104102394A true CN104102394A (en) | 2014-10-15 |
Family
ID=48548182
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310119507 Pending CN103150063A (en) | 2013-04-09 | 2013-04-09 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN201410143314.7A Pending CN104102394A (en) | 2013-04-09 | 2014-04-09 | Optical multi-point touch control equipment and method |
| CN201410141290.1A Pending CN104102380A (en) | 2013-04-09 | 2014-04-09 | Touch device and method for realizing force recognition |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310119507 Pending CN103150063A (en) | 2013-04-09 | 2013-04-09 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410141290.1A Pending CN104102380A (en) | 2013-04-09 | 2014-04-09 | Touch device and method for realizing force recognition |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN103150063A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218088A (en) * | 2013-04-28 | 2013-07-24 | 肖衣鉴 | Optical touch display device and optical touch screen |
| CN104932760A (en) * | 2015-06-23 | 2015-09-23 | 中国联合网络通信集团有限公司 | Infrared touch control method and device |
| CN109325394A (en) * | 2017-08-01 | 2019-02-12 | 苹果公司 | Determine sparse patterned illumination and intensive patterned illumination |
| CN109656423A (en) * | 2018-09-07 | 2019-04-19 | 友达光电股份有限公司 | Sense display device and the display module using it |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103150063A (en) * | 2013-04-09 | 2013-06-12 | 北京紫霄科技有限公司 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN105320358A (en) * | 2014-06-20 | 2016-02-10 | 鸿合科技有限公司 | Touch trace display method and device based on infrared white plate and infrared white plate |
| CN105738016A (en) * | 2014-12-11 | 2016-07-06 | 上海箩箕技术有限公司 | Finger pressing pressure detection method |
| CN104680162B (en) * | 2015-02-06 | 2018-11-23 | 广东光阵光电科技有限公司 | Circulating type fingerprint collecting method and its construction |
| CN104978142B (en) * | 2015-06-17 | 2018-07-31 | 华为技术有限公司 | A kind of control method of intelligent wearable device and intelligent wearable device |
| CN106569644A (en) * | 2015-10-10 | 2017-04-19 | 深圳欧菲光科技股份有限公司 | Touch sensing device and touch sensing method |
| CN106205379B (en) * | 2016-08-30 | 2019-05-24 | 苏州佳世达电通有限公司 | Display |
| CN107240178A (en) * | 2017-06-01 | 2017-10-10 | 克立司帝控制系统（上海）有限公司 | Double-certificationsystem system and double-certificationmethod, method and gate inhibition based on image recognition technology |
| CN107527020A (en) * | 2017-07-31 | 2017-12-29 | 广东欧珀移动通信有限公司 | Biometric discrimination method and Related product |
| CN109799635A (en) * | 2019-01-16 | 2019-05-24 | 柳州阜民科技有限公司 | A kind of electronic equipment |
| CN110368703A (en) * | 2019-07-12 | 2019-10-25 | 深圳市战音科技有限公司 | A kind of drawing board and the method for forming picture |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080150913A1 (en) * | 2002-05-28 | 2008-06-26 | Matthew Bell | Computer vision based touch screen |
| CN101285952A (en) * | 2008-06-12 | 2008-10-15 | 北京汇冠新技术有限公司 | LCD module group embodying touch detection device |
| CN101533170A (en) * | 2008-03-14 | 2009-09-16 | 三星电子株式会社 | Liquid crystal display, display system including the liquid crystal display and method of recognizing an object using the liquid crystal display |
| CN101945228A (en) * | 2009-07-08 | 2011-01-12 | 张海宏 | Table body surface liquid crystal display TV and device realizing multiple identification |
| KR101131768B1 (en) * | 2011-09-06 | 2012-04-05 | 주식회사 알엔웨어 | Multi touch screen for high speed sampling |
| CN102799318A (en) * | 2012-08-13 | 2012-11-28 | 深圳先进技术研究院 | Human-machine interaction method and system based on binocular stereoscopic vision |
| CN103150063A (en) * | 2013-04-09 | 2013-06-12 | 北京紫霄科技有限公司 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN203414922U (en) * | 2013-04-09 | 2014-01-29 | 北京紫霄科技有限公司 | Optical multi-point touch control equipment based on LCD (liquid crystal display) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3909603B2 (en) * | 2003-12-19 | 2007-04-25 | シャープ株式会社 | Optical material, optical member, lighting device and display device |
| US8115753B2 (en) * | 2007-04-11 | 2012-02-14 | Next Holdings Limited | Touch screen system with hover and click input methods |
| CN101403952B (en) * | 2008-11-10 | 2010-08-11 | 成都市华为赛门铁克科技有限公司 | Method and apparatus for acquiring touch screen induction information |
| TWI498786B (en) * | 2009-08-24 | 2015-09-01 | Semiconductor Energy Lab | Touch sensor and method for driving the same and display device |
| US8588530B2 (en) * | 2010-07-15 | 2013-11-19 | Samsung Techwin Co., Ltd. | Method and camera for detecting a region having a specific shape |
| CN103019477A (en) * | 2012-12-14 | 2013-04-03 | 山东龙视天下传媒集团有限公司 | Indoor wireless audio-video holographic interaction back projection all-in-one machine and realization method |
| CN103164086B (en) * | 2013-03-15 | 2016-05-25 | 创维光电科技(深圳)有限公司 | A kind of touch display methods, device and infrared touch panel based on infrared touch panel |
-
2013
- 2013-04-09 CN CN 201310119507 patent/CN103150063A/en active Pending
-
2014
- 2014-04-09 CN CN201410143314.7A patent/CN104102394A/en active Pending
- 2014-04-09 CN CN201410141290.1A patent/CN104102380A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080150913A1 (en) * | 2002-05-28 | 2008-06-26 | Matthew Bell | Computer vision based touch screen |
| CN101533170A (en) * | 2008-03-14 | 2009-09-16 | 三星电子株式会社 | Liquid crystal display, display system including the liquid crystal display and method of recognizing an object using the liquid crystal display |
| CN101285952A (en) * | 2008-06-12 | 2008-10-15 | 北京汇冠新技术有限公司 | LCD module group embodying touch detection device |
| CN101945228A (en) * | 2009-07-08 | 2011-01-12 | 张海宏 | Table body surface liquid crystal display TV and device realizing multiple identification |
| KR101131768B1 (en) * | 2011-09-06 | 2012-04-05 | 주식회사 알엔웨어 | Multi touch screen for high speed sampling |
| CN102799318A (en) * | 2012-08-13 | 2012-11-28 | 深圳先进技术研究院 | Human-machine interaction method and system based on binocular stereoscopic vision |
| CN103150063A (en) * | 2013-04-09 | 2013-06-12 | 北京紫霄科技有限公司 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN203414922U (en) * | 2013-04-09 | 2014-01-29 | 北京紫霄科技有限公司 | Optical multi-point touch control equipment based on LCD (liquid crystal display) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218088A (en) * | 2013-04-28 | 2013-07-24 | 肖衣鉴 | Optical touch display device and optical touch screen |
| CN104932760A (en) * | 2015-06-23 | 2015-09-23 | 中国联合网络通信集团有限公司 | Infrared touch control method and device |
| CN104932760B (en) * | 2015-06-23 | 2018-03-06 | 中国联合网络通信集团有限公司 | Infrared touch control method and device |
| CN109325394A (en) * | 2017-08-01 | 2019-02-12 | 苹果公司 | Determine sparse patterned illumination and intensive patterned illumination |
| CN109325394B (en) * | 2017-08-01 | 2022-06-21 | 苹果公司 | Determining sparse pattern illumination and dense pattern illumination |
| CN109656423A (en) * | 2018-09-07 | 2019-04-19 | 友达光电股份有限公司 | Sense display device and the display module using it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104102380A (en) | 2014-10-15 |
| CN103150063A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104102394A (en) | Optical multi-point touch control equipment and method | |
| CN101231450B (en) | Multipoint and object touch panel arrangement as well as multipoint touch orientation method | |
| KR102047494B1 (en) | Transparent Display Apparatus and Object Selection Method Thereof | |
| CN102323868B (en) | Man-machine multipoint interaction method and device based on infrared image | |
| US20160246395A1 (en) | Retroreflection Based Multitouch Sensor | |
| US20180284944A1 (en) | Apparatus for contactlessly detecting indicated position on reproduced image | |
| US20130222353A1 (en) | Prism illumination-optic | |
| CN201191355Y (en) | Multi-point object touch screen apparatus | |
| RU2010101272A (en) | TOUCH SCREEN BASED ON COMPLETE INTERNAL DISPLAY VIOLATION | |
| KR20170078838A (en) | Non-contact input device and method | |
| CN109782435B (en) | Multi-scene air imaging and interaction system | |
| CN105807989A (en) | Gesture touch method and system | |
| CN104834394A (en) | Interaction display system | |
| CN102667689B (en) | Interactive display | |
| CN204390219U (en) | Input interface projection structure and have the electronic installation of this projection structure | |
| WO2018161564A1 (en) | Gesture recognition system and method, and display device | |
| JP5783045B2 (en) | Input device and input system | |
| CN109117066A (en) | Air-borne imagery interactive device | |
| CN102375622B (en) | Virtual electronic whiteboard device | |
| KR101507458B1 (en) | Interactive display | |
| CN203414922U (en) | Optical multi-point touch control equipment based on LCD (liquid crystal display) | |
| KR20150062952A (en) | Laser projector with position detecting capability and position detection method using the same | |
| CN101950221A (en) | Multi-touch device based on sphere display and multi-touch method thereof | |
| CN105718121B (en) | Optical touch device | |
| CN203012681U (en) | Interactive electronic whiteboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141015 |