CN102508575B - Screen writing device, screen writing system and realization method thereof - Google Patents
Screen writing device, screen writing system and realization method thereof Download PDFInfo
- Publication number
- CN102508575B CN102508575B CN201110354897.4A CN201110354897A CN102508575B CN 102508575 B CN102508575 B CN 102508575B CN 201110354897 A CN201110354897 A CN 201110354897A CN 102508575 B CN102508575 B CN 102508575B
- Authority
- CN
- China
- Prior art keywords
- screen
- writing device
- electric signal
- screen writing
- processing unit
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 59
- 238000004040 coloring Methods 0.000 claims description 18
- 230000008447 perception Effects 0.000 claims description 8
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 claims description 7
- 239000013225 prussian blue Substances 0.000 claims description 7
- 229960003351 prussian blue Drugs 0.000 claims description 7
- 229920000767 polyaniline Polymers 0.000 claims description 4
- 238000011282 treatment Methods 0.000 claims description 3
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 18
- 230000003993 interaction Effects 0.000 abstract description 5
- 230000006854 communication Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 5
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000549 coloured material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Projection Apparatus (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a screen writing device, which is used by a user to write input information onto a projection screen by a hand. The screen writing device comprises a contact block and a pressure sensor, the contact block contacts with the projection screen and is used for acquiring pressure information when the user writes, and the pressure information acquired by the contact block is converted into electric signals by the pressure sensor. The screen writing device is characterized by further comprising an electric signal processing unit and a color changing material, the electric signals outputted by the pressure sensor are converted into signals which can be sensed by a color changing module by the electric signal processing unit, and the color changing material generates a corresponding color according to signals outputted by the electric signal processing unit. The screen writing device does not need a communication device, and is small in volume and convenient in carrying, and requirements of instantaneity and accuracy can be met in an interaction process. The invention simultaneously discloses a screen writing system and a realization method thereof.
Description
Technical field
The present invention relates to computer input unit, particularly relate to a kind of screen writing device, screen writing system and its implementation for writing on projection screen.
Background technology
Along with the development of modern shadow casting technique, computer technology, people represent colourful content with word, sound, picture, video, and this has met people's demand to a certain extent.Along with the development of interaction technique, people have more and more experienced mutual brought enjoyment, as the iphone product of Apple company, the release of the products such as the XBox of microsoft company, make people more and more stronger to mutual serious hope, it is mutual convenient and intelligent also more and more to experience.
Mainly be divided into two classes for the domestic comparatively interactive system of ripe application projection.The first kind is to build based on electronic whiteboard, mainly comprises the type of skills such as touch-screen type, infrared array formula, induction and laser scan type.Its advantage is that reliability of positioning and precision are higher, and tracking velocity is very fast; Shortcoming is all to need to rely on special projection screen, cannot realize the interactive function on any projection plane, installs and uses inconvenience, and cost is higher.Another kind ofly adopt special mutual pen type equipment, as ultrasonic pen, infrared light electroprobe, optical mouse pen etc., coordinate the receiving sensor of external dedicated, can accurately locate pen tip position, realize writing and touch control operation on projection plane arbitrarily.In this type of reciprocal process, on the interaction pen of use, have a series of circuit module, such as sensor, signal transmission apparatus, the communicator of transmitted signal etc., this all can increase the volume of pen, not small and exquisite, is not easy to carry, and is not easy to random operation.And in above-mentioned interaction pen, thereby be all to use communicator to send the pressure information obtaining to outside receiving trap to obtain handwriting information, and communicator there will be data loss problem transmit data in communication process time, and user holds interaction pen all the time, wherein also can relate to occlusion issue, can cause location inaccurate.These loss of datas, locate inaccurate problem and all can directly cause reciprocal process to carry out real-time and accurately.
Summary of the invention
Technical matters to be solved by this invention is: make up above-mentioned the deficiencies in the prior art, propose a kind of screen writing device, device volume is less, and reciprocal process is accurate in real time.
The further technical matters to be solved of the present invention is to propose a kind of screen writing system and its implementation, and reciprocal process is accurate in real time.
Technical matters of the present invention is solved by following technical scheme:
A kind of screen writing device, for handwritten input information on projection screen, comprise contact block and pressure transducer, described contact block contacts with described projection screen for obtaining the pressure information while writing, and the pressure information that described pressure transducer obtains described contact block is converted to electric signal; It is characterized in that: also comprise Electric signal processing unit and off-color material; Described Electric signal processing unit is converted to the electric signal of described pressure transducer output the signal of described change color module energy perception; Described off-color material produces corresponding color according to the signal of described Electric signal processing unit output.
A kind of screen writing device, for handwritten input information on projection screen, comprises contact block, and described contact block contacts with described projection screen for obtaining the pressure information while writing; Also comprise piezochromic material, the pressure information obtaining according to described contact block produces corresponding color.
Technical matters of the present invention is solved by following further technical scheme:
A kind of screen writing system, comprises projection screen, screen writing device, and camera head, projection arrangement and calculation processing apparatus, described screen writing device is above-mentioned screen writing device; The colouring information producing when described camera head is taken described screen writing device and write, is sent to described calculation processing apparatus by the image that includes colouring information; Pressure information when described calculation processing apparatus obtains writing according to this colouring information computing and the positional information of described screen writing device, and described pressure information is converted to person's handwriting signal, described person's handwriting signal and described positional information are sent to described projection arrangement; Described projection arrangement demonstrates described person's handwriting signal according to the described positional information relevant position on described projection screen obtaining.
An implementation method for screen writing system, is characterized in that: comprise the following steps: use above-mentioned screen writing device to write on described projection screen; The colouring information producing when shooting is obtained described screen writing device and write; Pressure information when this colouring information image of computing obtains writing and the positional information of described screen writing device, be converted to person's handwriting signal by described pressure information; Demonstrate described person's handwriting signal according to the described positional information relevant position on projection screen obtaining.
The beneficial effect that the present invention is compared with the prior art is:
Screen writing device of the present invention, uses Electric signal processing unit and off-color material, or directly uses piezochromic material, and the pressure information that contact block is obtained changes corresponding color into.While realization, take color image by external pick-up device, obtain corresponding colouring information, through respective handling, the reducible pressure information that obtains obtains positional information simultaneously, and then can be according to positional information in relevant position output person's handwriting effect.Screen writing device of the present invention, sends related pressure information owing to not re-using communicator, therefore in screen writing device, does not need to arrange communicator again, and the small volume of screen writing device, is convenient for carrying.And send data owing to not re-using communicator, obtain pressure information and positional information but use the mode of photographed images to obtain colouring information, therefore reciprocal process does not have data transmission yet and loses the erroneous judgement causing, and reciprocal process can reach in real time requirement accurately.
Brief description of the drawings
Fig. 1 is the structural representation of the screen writing device of the specific embodiment of the invention one;
Fig. 2 is the structural representation of the screen writing system of the specific embodiment of the invention one.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further details.
Embodiment one
As shown in Figure 1, be the structural representation of the screen writing device of this embodiment.Screen writing device comprises contact block 105, pressure transducer 104, Electric signal processing unit 102 and off-color material 101.
In this embodiment, screen writing device is ring structure, screen writing device also comprises finger ring support 103, wherein, contact block 105, pressure transducer 104 are arranged at the bottom of finger ring support 103, and Electric signal processing unit 102 and off-color material 101 are arranged at the top of finger ring or fingerstall structure.In this embodiment, be the screen writing device that uses ring structure design, certainly also can be designed to pen-shaped structure, but the design of pen-shaped structure do not have finger ring shapeliness, this is because the screen writing device volume of ring structure is small and exquisite, is easy to carry; And use time be worn on finger also very convenient, also can be arranged to according to finger thickness carry out degree of tightness operation.
In the screen writing device of this embodiment, contact block 105 with contact wait the projection screen of writing for obtaining the pressure information while writing.The pressure information that pressure transducer 104 obtains contact block 105 is converted to electric signal, sends Electric signal processing unit 102 to.Off-color material 101 is electrochromic material, and Electric signal processing unit 102 is the first Electric signal processing unit.The electric signal that pressure transducer 104 is exported in the first Electric signal processing unit is converted to the electric signal of electrochromic material energy perception, and electrochromic material produces respective color according to the electric signal of the first Electric signal processing unit output.
Preferably, contact block 105 adopts high-abrasive material, and the surface of contact of contact block 105 is curved surface, for example, contact block 105 can be designed to a kind of spherically, makes to contact with the projection screen Shi Weidian that contacts.Like this in writing process finger taking contact point when the centre of sphere reverses up and down, can obtain accurately pressure information.And electrochromic material can be selected from transition metal oxide electrochromic material, Prussian blue system, purple sieve essence or polyaniline.For example, when electrochromic material is polyaniline, in the time that impressed voltage changes from-0.2 ~ 0.7V, that the color of polyaniline presents is successively light yellow, green, blue-green and mazarine, i.e. a corresponding a kind of color of electric pressure.Again for example, when electrochromic material is Prussian blue system, the electrochromic material that Prussian blue system is made up of the painted tungsten trioxide film of negative electrode and anode painted Prussian blue (PB) film, tungsten trioxide film is reduction coloured material, become darkviolet by water white transparency, prussian blue film is heat-tinting material, becomes mazarine by water white transparency, therefore has the characteristic of high visual contrast, high optics amplitude modulation with the electrochromic material of two film collocation compositions.
When the screen writing device of this embodiment is worked, need to coordinate relevant apparatus composition screen writing system complete handwriting effect.As shown in Figure 2, for the screen writing system in this embodiment, comprise screen writing device 1, projection screen 2, camera head 3, projection arrangement 5 and calculation processing apparatus 4.When work, screen writing device 1 contacts with projection screen 2, carries out movable book and write on projection screen 2, after contact information is obtained in screen writing device 1 work, produces corresponding color.Camera head 3 carries out work, by real-time this process being filmed, also and in real time giving calculation processing apparatus 4 processes, calculation processing apparatus 4 receives the image that includes colouring information that camera head 3 photographs, obtain pressure information according to color treatments wherein, the positional information that obtains corresponding screen writing device 1 is processed in position according to color dot in image, and pressure information is converted to person's handwriting signal, afterwards the person's handwriting signal of the positional information obtaining and conversion is transferred to projection arrangement 5 in real time, projection arrangement 5 demonstrates person's handwriting signal according to the positional information obtaining in the corresponding position of projection screen 2, so, present the writing effect of screen writing device 1 on projection screen 2.
In screen writing device 1, different pressure produces different colors, obtains as calculated the person's handwriting signal of different thicknesses effect after treating apparatus 4 computings, and pressure is larger, and person's handwriting is thicker, can show the person's handwriting of different thicknesses effect.For example: the change in voltage scope that pressure transducer 104 is produced by pressure size is [A, B], is the change in voltage scope [C, D] that off-color material is suitable for through the first Electric signal processing cell translation.When voltage is changed to by C in the process of D, the color of off-color material changes to F by E, according to the difference of R in color or G or the shared component of B, the color region from E to F is divided into 16 grades, also just pressure is divided into 16 grades simultaneously.Color E is representing first grade of pressure, i.e. the grade of pressure minimum, i.e. and the thinnest grade of person's handwriting, the like, last grade of color F representative pressure, the i.e. grade of pressure maximum, the i.e. the thickest grade of person's handwriting.
Above-mentioned screen writing system, need to carrying out mating of position correction and color and pressure system before startup work.Position correction can adopt following methods: can be on projection screen 2 uniform 16 check points, screen writing device 1 presses 16 points successively, the coordinate information of these 16 points is just stored in computing machine like this, and this is just for the accuracy of the position of implementation process mid point provides guarantee.Color is mated and can be adopted following methods with pressure: the variation range according to the B component in rgb color component (also can be according to R component, G component) is divided into 16 grades, and each like this color i.e. corresponding a kind of pressure rating.The color gamut E producing according to screen writing device 1 is to F, corresponding first pressure rating of above-mentioned color E, corresponding the thinnest person's handwriting, for example 1mm, along with the increase of color grade, pressure rating increases, handwriting thickness equal difference (for example 1mm) increases, like this color F just correspondence the thick person's handwriting of 16mm.This match information is stored in calculation processing apparatus 4 in advance.
In work, when calculation processing apparatus 4 computings obtain positional information, extract color in image.Because the color in off-color material region can clearly be different from background colour around, so be easy to by this feature out.Preferably, off-color material zone design can be become to regular figure, in image processing process, calculate the centre of gravity place of this figure, also be the geometric center of figure, according to centre of gravity place, and the relation of the position of 16 points storing when position correction, obtain screen writing device 1 and write contact point on projection screen 2.When calculation processing apparatus 4 computings obtain person's handwriting signal, judge which color the colouring information of protecting in image belongs to, in conjunction with the color and the match information of pressure of in advance storage, getting final product correspondence, to obtain relevant pressure be much, exports how thick person's handwriting signal.
The screen writing device of this embodiment, the pressure information that contact block is obtained changes corresponding color into.While realization, take color image by external pick-up device, obtain corresponding colouring information, through respective handling, the reducible pressure information that obtains obtains positional information simultaneously, and then can be according to positional information in relevant position output person's handwriting effect.The small volume of screen writing device, is convenient for carrying.And send data owing to not re-using communicator, obtain pressure information and positional information but use the mode of photographed images to obtain colouring information, therefore reciprocal process does not have data transmission yet and loses the erroneous judgement causing, and reciprocal process can reach in real time requirement accurately.
Embodiment two
The difference of the screen writing device of the screen writing device of this embodiment and embodiment one is: in this embodiment, off-color material is photochromic material.Electric signal processing cell translation output optical signal.
The screen writing device of this embodiment, comprises contact block, pressure transducer, Electric signal processing unit and off-color material.Wherein, contact block, pressure transducer is all identical with embodiment one, and off-color material and Electric signal processing unit are different.Off-color material is photochromic material, Electric signal processing unit is the second Electric signal processing unit, the electric signal of described pressure transducer output is converted to the light signal of described photochromic material energy perception by described the second Electric signal processing unit, thereby export respective color according to pressure information when screen writing device is write.Afterwards, screen writing device and projection screen, camera head, course of work when projection arrangement and calculation processing apparatus composition screen writing system is all identical, in this not repeat specification.
In this embodiment, although that off-color material and Electric signal processing unit and embodiment one have is different, can arrive the small volume that makes screen writing device equally, be convenient for carrying, and reciprocal process effect accurately in real time.
Embodiment three
The difference of the screen writing device of the screen writing device of this embodiment and embodiment one is: in this embodiment, off-color material is temperature-sensing color-changing material.Electric signal processing cell translation output temperature signal.
The screen writing device of this embodiment, comprises contact block, pressure transducer, Electric signal processing unit and off-color material.Wherein, contact block, pressure transducer is all identical with embodiment one, and off-color material and Electric signal processing unit are different.Off-color material is temperature-sensing color-changing material, Electric signal processing unit is the 3rd Electric signal processing unit, the electric signal of described pressure transducer output is converted to the temperature signal of described temperature-sensing color-changing material energy perception by described the 3rd Electric signal processing unit, thereby export respective color according to pressure information when screen writing device is write.Afterwards, screen writing device and projection screen, camera head, course of work when projection arrangement and calculation processing apparatus composition screen writing system is all identical, in this not repeat specification.
In this embodiment, although that off-color material and Electric signal processing unit and embodiment one have is different, can arrive the small volume that makes screen writing device equally, be convenient for carrying, and reciprocal process effect accurately in real time.
Embodiment four
The difference of the screen writing device of the screen writing device of this embodiment and embodiment one is: in this embodiment, off-color material is piezochromic material.And in screen writing device, no longer need pressure transducer and Electric signal processing unit.
The screen writing device of this embodiment, comprises contact block and piezochromic material.Wherein, contact block, with contact wait the projection screen of writing for obtaining the pressure information while writing, the pressure information that piezochromic material is obtained according to described contact block produces corresponding color, thereby exports respective color according to pressure information when screen writing device is write.Afterwards, screen writing device and projection screen, camera head, course of work when projection arrangement and calculation processing apparatus composition screen writing system is all identical, in this not repeat specification.
In this embodiment, although that off-color material and working method thereof and embodiment one have is different, can arrive the small volume that makes screen writing device equally, be convenient for carrying, and reciprocal process effect accurately in real time.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, make without departing from the inventive concept of the premise some substituting or obvious modification, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a screen writing device, for handwritten input information on projection screen, comprise contact block and pressure transducer, described contact block contacts with described projection screen for obtaining the pressure information while writing, and the pressure information that described pressure transducer obtains described contact block is converted to electric signal; It is characterized in that: also comprise Electric signal processing unit and off-color material;
Described Electric signal processing unit is converted to the electric signal of described pressure transducer output the signal of described off-color material energy perception;
Described off-color material produces corresponding color according to the signal of described Electric signal processing unit output, and described colouring information is for the treatment of the positional information that obtains described pressure information and described screen writing device.
2. screen writing device according to claim 1, is characterized in that: described off-color material is electrochromic material; Described Electric signal processing unit is the first Electric signal processing unit, and described the first Electric signal processing unit is converted to the electric signal of described pressure transducer output the electric signal of described electrochromic material energy perception.
3. screen writing device according to claim 2, is characterized in that: described electrochromic material is transition metal oxide electrochromic material, Prussian blue system, purple sieve essence or polyaniline.
4. screen writing device according to claim 1, is characterized in that: described off-color material is photochromic material; Described Electric signal processing unit is the second Electric signal processing unit, and described the second Electric signal processing unit is converted to the electric signal of described pressure transducer output the light signal of described photochromic material energy perception.
5. screen writing device according to claim 1, is characterized in that: described off-color material is temperature-sensing color-changing material; Described Electric signal processing unit is the 3rd Electric signal processing unit, and described the 3rd Electric signal processing unit is converted to the electric signal of described pressure transducer output the temperature signal of described temperature-sensing color-changing material energy perception.
6. screen writing device according to claim 1, is characterized in that: described contact block adopts high-abrasive material, and the surface of contact of described contact block is curved surface, and making with described projection screen is that point contacts.
7. screen writing device according to claim 1, it is characterized in that: described screen writing device is finger ring or fingerstall structure, described contact block, pressure transducer are arranged at the bottom of described finger ring or fingerstall structure, and described Electric signal processing unit and off-color material are arranged at the top of described finger ring or fingerstall structure.
8. a screen writing device, for handwritten input information on projection screen, comprises contact block, and described contact block contacts with described projection screen for obtaining the pressure information while writing; It is characterized in that: also comprise piezochromic material, the pressure information obtaining according to described contact block produces corresponding color, and described colouring information is for the treatment of the positional information that obtains described pressure information and described screen writing device.
9. a screen writing system, is characterized in that: comprise projection screen, and screen writing device, camera head, projection arrangement and calculation processing apparatus, described screen writing device is the screen writing device as described in as arbitrary in claim 1 to 8; The colouring information producing when described camera head is taken described screen writing device and write, is sent to described calculation processing apparatus by the image that includes colouring information; Pressure information when described calculation processing apparatus obtains writing according to this colouring information computing and the positional information of described screen writing device, and described pressure information is converted to person's handwriting signal, described person's handwriting signal and described positional information are sent to described projection arrangement; Described projection arrangement demonstrates described person's handwriting signal according to the described positional information relevant position on described projection screen obtaining.
10. an implementation method for screen writing system, is characterized in that: comprise the following steps: use screen writing device as described in as times arbitrary in claim 1 to 8 as described in write on projection screen; The colouring information producing when shooting is obtained described screen writing device and write; Pressure information when this colouring information image of computing obtains writing and the positional information of described screen writing device, be converted to person's handwriting signal by described pressure information; Demonstrate described person's handwriting signal according to the described positional information relevant position on projection screen obtaining.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354897.4A CN102508575B (en) | 2011-11-10 | 2011-11-10 | Screen writing device, screen writing system and realization method thereof |
| HK12107227.6A HK1166541A1 (en) | 2011-11-10 | 2012-07-23 | Screen writing device, screen writing system and implementation method of writing on the screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354897.4A CN102508575B (en) | 2011-11-10 | 2011-11-10 | Screen writing device, screen writing system and realization method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102508575A CN102508575A (en) | 2012-06-20 |
| CN102508575B true CN102508575B (en) | 2014-10-22 |
Family
ID=46220674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110354897.4A Expired - Fee Related CN102508575B (en) | 2011-11-10 | 2011-11-10 | Screen writing device, screen writing system and realization method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102508575B (en) |
| HK (1) | HK1166541A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246072A (en) * | 2013-05-15 | 2013-08-14 | 福州大学 | Dynamic grating for 2D-to-3D (two-dimension to three-dimension) conversion |
| CN103744555B (en) * | 2014-01-06 | 2017-11-10 | 溢洋光电（深圳）有限公司 | Instant messaging handwriting bi-directional display restoring method and related system and method |
| CN106547377A (en) * | 2016-10-27 | 2017-03-29 | 广东小天才科技有限公司 | A kind of stroke display output method and device of writing system |
| CN106388090A (en) * | 2016-11-10 | 2017-02-15 | 北京仁光科技有限公司 | Infrared screen touch glove based on interactive large screen |
| CN106775007B (en) * | 2016-11-24 | 2020-01-03 | 广东小天才科技有限公司 | Display method of electronic blackboard and electronic blackboard |
| CN109542326B (en) * | 2018-11-29 | 2020-10-13 | 广州朗国电子科技有限公司 | Method and system for realizing handwriting writing in multiple colors by touch equipment |
| US20200220998A1 (en) * | 2019-01-09 | 2020-07-09 | Timothy E. Bridges | Method and apparatus for quickly capturing images with one hand |
| CN111999927B (en) * | 2020-09-15 | 2022-06-21 | 业成科技（成都）有限公司 | Electronic handwriting board and handwriting restoration method |
| CN114115558B (en) * | 2021-11-04 | 2024-06-11 | 北京钛方科技有限责任公司 | Touch pen identification method, device and system, storage medium and touch pen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145002A (en) * | 1994-12-21 | 1997-03-12 | 株式会社日立制作所 | Input interface device of display unit |
| CN2772127Y (en) * | 2004-12-10 | 2006-04-12 | 黄伟仁 | Mobile transmission and digital information processor |
| CN101167043A (en) * | 2004-01-16 | 2008-04-23 | 索尼电脑娱乐公司 | Method and device for optical input device |
| CN101303631A (en) * | 2007-05-11 | 2008-11-12 | 英群企业股份有限公司 | Computer pointer control method and apparatus |
| CN101885820A (en) * | 2010-07-02 | 2010-11-17 | 黑龙江大学 | Triarylated amine polyschiff base, preparation method thereof taking triphenylamine as raw material and application |
| CN101937286A (en) * | 2009-06-29 | 2011-01-05 | 比亚迪股份有限公司 | Light pen track identification system and method |
| CN102156586A (en) * | 2011-05-03 | 2011-08-17 | 重庆邮电大学 | Electronic drawing board capable of displaying handwriting synchronously |
-
2011
- 2011-11-10 CN CN201110354897.4A patent/CN102508575B/en not_active Expired - Fee Related
-
2012
- 2012-07-23 HK HK12107227.6A patent/HK1166541A1/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145002A (en) * | 1994-12-21 | 1997-03-12 | 株式会社日立制作所 | Input interface device of display unit |
| CN101167043A (en) * | 2004-01-16 | 2008-04-23 | 索尼电脑娱乐公司 | Method and device for optical input device |
| CN2772127Y (en) * | 2004-12-10 | 2006-04-12 | 黄伟仁 | Mobile transmission and digital information processor |
| CN101303631A (en) * | 2007-05-11 | 2008-11-12 | 英群企业股份有限公司 | Computer pointer control method and apparatus |
| CN101937286A (en) * | 2009-06-29 | 2011-01-05 | 比亚迪股份有限公司 | Light pen track identification system and method |
| CN101885820A (en) * | 2010-07-02 | 2010-11-17 | 黑龙江大学 | Triarylated amine polyschiff base, preparation method thereof taking triphenylamine as raw material and application |
| CN102156586A (en) * | 2011-05-03 | 2011-08-17 | 重庆邮电大学 | Electronic drawing board capable of displaying handwriting synchronously |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102508575A (en) | 2012-06-20 |
| HK1166541A1 (en) | 2012-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102508575B (en) | Screen writing device, screen writing system and realization method thereof | |
| US10713812B2 (en) | Method and apparatus for determining facial pose angle, and computer storage medium | |
| EP3943881A1 (en) | Method and apparatus for measuring geometric parameter of object, and terminal | |
| CN107481299A (en) | A kind of written handwriting display methods and system, intelligent terminal and intelligent writing system | |
| CN103353793B (en) | A kind of Novel electronic pen and intelligent terminal | |
| TWI454968B (en) | Three-dimensional interactive device and operation method thereof | |
| CN103809880B (en) | Man-machine interaction system and method | |
| EP2919104B1 (en) | Information processing device, information processing method, and computer-readable recording medium | |
| EP4004699A1 (en) | Trackability enhancement of a passive stylus | |
| CN110633018A (en) | Method for controlling display of large-screen equipment, mobile terminal and first system | |
| CN110209273A (en) | Gesture identification method, interaction control method, device, medium and electronic equipment | |
| CN109324749A (en) | Drawing practice, device, storage medium and electronic equipment | |
| CN106781841A (en) | A kind of AR religion picture devices and its religion picture system | |
| CN103955316B (en) | A kind of finger tip touching detecting system and method | |
| CN103617642B (en) | A kind of digital book drawing method and device | |
| US11854310B2 (en) | Face liveness detection method and related apparatus | |
| CN102722254A (en) | Method and system for location interaction | |
| CN105513128A (en) | Kinect-based three-dimensional data fusion processing method | |
| CN107682595B (en) | interactive projection method, system and computer readable storage medium | |
| CN104134070A (en) | Interactive object tracking system and interactive object tracking method thereof | |
| CN104123015A (en) | System for simulating laser pen through mobile phone and achieving method of system | |
| CN113260951A (en) | Fade-in user interface display based on finger distance or hand proximity | |
| CN110717993A (en) | Interaction method, system and medium of split type AR glasses system | |
| CN204190857U (en) | Project with interactive lettering pen and screen writing system | |
| CN202815789U (en) | Electronic white board system with orthogonal projection image double-pen writing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1166541 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1166541 Country of ref document: HK |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 |