CN208722169U - A kind of liquid crystal writing film selective erase Image Location System, board, blackboard, drawing board - Google Patents
A kind of liquid crystal writing film selective erase Image Location System, board, blackboard, drawing board Download PDFInfo
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- CN208722169U CN208722169U CN201820998172.6U CN201820998172U CN208722169U CN 208722169 U CN208722169 U CN 208722169U CN 201820998172 U CN201820998172 U CN 201820998172U CN 208722169 U CN208722169 U CN 208722169U
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Abstract
The utility model discloses a kind of liquid crystal writing film selective erase Image Location Systems, board, blackboard, drawing board, comprising: at least one image positioning apparatus, the image positioning apparatus include at least one camera and the processor that connect with camera；The camera acquisition writes the image information of the raclementum occurred in region and is sent to processor, and the processor positions relative position of the raclementum on liquid crystal writing film according to image information, determines selective erase location information.The utility model is the utility model has the advantages that can be realized the local area localization for written contents and erasing, overcoming traditional technology cannot achieve the deficiency of selective erase and positioning, the working efficiency and usage experience of user are improved, the commercial value of liquid crystal writing film and its application apparatus is improved.
Description
Technical field
The present invention relates to liquid crystal writing film selective erase field of locating technology, more particularly to a kind of liquid crystal writing film part
Wipe Image Location System, board, blackboard, drawing board.
Background technique
Liquid crystal writing film described in this patent and common liquid crystal display film and plasma show film in liquid crystal components, work
Make principle, application range, usage mode etc. and there is significant difference, especially in terms of writing, common liquid crystal display
Film and plasma show that film cannot achieve impression and write and wipe trace.
To liquid crystal writing film carry out selective erase when, must problems faced be to determine local erasure location
Position is simulated the mode to erase the board and is realized to the positioning of the selective erase of liquid crystal writing film, can bring better user experience.It is existing
Technology, which is disclosed through hot erasing mode, identifies selective erase region, and this mode is complicated for operation, and safety coefficient is low, easy pair
Writing film causes to damage, poor user experience.Prior art discloses identified in the energized state by applying the pressure of setting
Selective erase region, this mode, which has the size of external force, compares strict requirements, therefore there are selective erase positioning is inaccurate
True problem be easy to cause and accidentally wipes.
Summary of the invention
First purpose of the technical program be disclose a kind of liquid crystal writing film selective erase Image Location System, board,
Blackboard, drawing board, the system can position local erasure location, to be realized according to the location information of selective erase position
To the selective erase of written handwriting on liquid crystal writing film.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of liquid crystal writing film selective erase Image Location System, comprising: at least one image positioning apparatus, the image
Positioning device includes at least one camera and the processor that connect with camera；The camera acquisition writes in region
The image information of existing raclementum is simultaneously sent to processor, and the processor positions raclementum in liquid crystal writing according to image information
Relative position on film determines selective erase location information.
The selective erase region on liquid crystal writing film is determined according to the selective erase location information, to local scratching area domain
It is wiped.By detecting the image of raclementum, its relative position information on liquid crystal writing film, relative position information are determined
It can use geometrical relationship to be calculated, can also be obtained by image recognition and target location algorithm.
Further, judge whether the size and/or shape of the raclementum meets the requirement of selective erase setting, if
It is to execute selective erase；Otherwise, it does not execute.
The size and/or shape for meeting the raclementum of selective erase requirement by presetting can be avoided due to writing
The mistake of written information is wiped caused by the image location information of pen or other external interference objects.
Further, the image positioning apparatus is arranged in around liquid crystal writing film, and wherein camera is one.
Further, liquid crystal writing film is divided into two or more region, by detecting raclementum figure
As the region at place, raclementum location information is positioned.
Image positioning apparatus can be arranged except liquid crystal writing film, for example, the setting except liquid crystal blackboard is arranged in
Position acquires the image information for writing raclementum in region by camera, using image recognition and location algorithm, to raclementum
Relative position is positioned.
Further, the image positioning apparatus is arranged in around liquid crystal writing film, and wherein camera is two；It can be with
Image positioning apparatus is arranged in the periphery of liquid crystal writing film, for example on the frame of liquid crystal writing plate or liquid crystal blackboard, passes through
Detection erasing the distance between object image and two cameras, using geometrical relationship, in conjunction with the position of frame and liquid crystal writing film
Relationship determines relative position information of the raclementum on liquid crystal writing film.
Further, the edge of liquid crystal writing film is arranged in the image positioning apparatus, and wherein camera is two；
Determine raclementum in liquid using geometrical relationship by detection erasing the distance between object image and two cameras
Relative position information on brilliant writing film.
Preferably mode is two endpoint locations that camera is separately positioned on to liquid crystal writing film same edge, in this way
Calculating can be simplified.
It being positioned using the image of camera acquisition raclementum, structure is simple, and it is at low cost, it is easy to implement；Camera
Installation site is unlimited, can be set on liquid crystal writing film, and any position outside liquid crystal writing film also can be set, as long as protecting
Card camera can collect the image information that liquid crystal writing film writes region.It is filled in addition, at least two images are positioned
It installs when on liquid crystal writing film, can use geometrical relationship, that raclementum is directly calculated is opposite on liquid crystal writing film
Location information eliminates complicated image recognition and position fixing process, improves selective erase location efficiency.
Second purpose of the technical program is to disclose a kind of board, including above-mentioned liquid crystal writing film selective erase image
Positioning system；
Further,
The board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard for handwriting trace
Character simultaneously stores；
Further, the board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard for handwriting trace
Character simultaneously stores；
Communication unit, for perhaps cloud to be communicated handwriting trace information or standard character biography with external equipment
It send to external equipment or cloud.
The purpose of third of the technical program is to disclose a kind of blackboard, fixed including above-mentioned liquid crystal writing film selective erase image
Position system；
Further,
The blackboard further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard for handwriting trace
Character simultaneously stores；
Further, the blackboard further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard for handwriting trace
Character simultaneously stores；
Communication unit, for perhaps cloud to be communicated handwriting trace information or standard character biography with external equipment
It send to external equipment or cloud.
4th purpose of the technical program is to disclose a kind of drawing board, fixed including above-mentioned liquid crystal writing film selective erase image
Position system；
Further,
The drawing board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard for handwriting trace
Character simultaneously stores；
Further, the drawing board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard for handwriting trace
Character simultaneously stores；
Communication unit, for perhaps cloud to be communicated handwriting trace information or standard character biography with external equipment
It send to external equipment or cloud.
Compared with prior art, the beneficial effects of the present invention are:
Selective erase image positioning apparatus disclosed by the invention can be to part by acquiring the image information of raclementum
Erasure location is accurately positioned, and the selective erase to liquid crystal writing film is realized in such a way that simulation erases the board, can be brought
Better user experience.
Framing is carried out using camera, is had the advantages of simple structure and easy realization.
By presetting the concrete shape and/or size of raclementum, lettering pen and external interference can be effectively excluded, is avoided
Loss of data caused by accidentally wiping.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the selective erase positioning device schematic diagram of embodiment one；
Fig. 2 is the writing membrane structure diagram one of embodiment one；
Fig. 3 is the writing membrane structure diagram two of embodiment one；
Fig. 4 is the selective erase positioning device schematic diagram of embodiment two.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Embodiment one
The present embodiment can not achieve selective erase to solve liquid crystal writing film existing in the prior art and can not be real
The technical issues of current situation portion erasure location positions, proposes a kind of liquid crystal writing film selective erase Image Location System, comprising: extremely
A few image positioning apparatus, image positioning apparatus include at least one camera and the processor that connect with camera；It takes the photograph
It writes the image information of raclementum occurred in region as head acquires and is sent to processor, processor is positioned according to image information
Relative position of the raclementum on liquid crystal writing film, determines selective erase location information.It is determined according to selective erase location information
Local scratching area domain is wiped in selective erase region on liquid crystal writing film.
It should be noted that processor can be using in existing central controller or microcontroller or single-chip microcontroller
It is any, for example the microcontroller of STC51 series can be selected, without carrying out the improvement of hardware configuration and software program.
In the present embodiment, the edge of liquid crystal writing film is arranged in image positioning apparatus, as shown in Figure 1, in liquid crystal writing film
Upper maximum A, B two-end-point for writing same one side that area size is respectively Xm and Ym installs a camera, each camera shooting respectively
Head can by constantly shoot write region in image data be compared obtain write region in object relative distance
Position, if P point coordinate is (x, y) in Fig. 1, A, B camera pass through respectively takes that whether there is or not the image comparisons before and after P point object
Can calculate automatically two camera of A, B to P point distances S1 and S2, then:
It can obtain:
Camera is arranged in the marginal position of writing film, on the one hand can effectively reduce the area of writing film frame, it is full
Demand of the sufficient user for Rimless liquid crystal writing device；On the other hand it can make selective erase positioning device and liquid crystal writing film
It is wholely set, it is easy to carry.
Liquid crystal writing film can use the structure of existing custom liquid crystals writing film, can also use other structures form,
Such as:
As an implementation, liquid crystal writing film uses such as flowering structure:
Liquid crystal writing film includes two conductive layers and the liquid crystal layer that is arranged between two conductive layers, one of conductive
Layer is divided into the conductive region of two or more mutually insulateds；It the conductive region, liquid crystal layer and undivided leads
The part that electric layer is overlapped jointly is erasable region.
Further, each conductive region is strip-shaped conductive region.
Further, each strip-shaped conductive region is parallel to each other.
Further, the conductive region should at least include a part at divided conductive layer edge.
Fig. 2 gives a kind of specific embodiment of liquid crystal writing film under present embodiment, comprising: the first conductive layer is divided
Three strip-shaped conductive regions being parallel to each other are cut into, the second conductive layer is not divided；Conductive region on first conductive layer and second
The overlapped part of conductive layer forms the first erasing region, the second erasing region and third and wipes region.
Selective erase location information is positioned using selective erase positioning device, liquid crystal is determined according to selective erase location information
Selective erase region on writing film is that the setting conductive region and the second conductive layer on the first conductive layer apply setting respectively
Voltage, voltage difference of the voltage in selective erase region constitute erasing electric field, realize the erasing to local scratching area domain.
Alternatively embodiment, liquid crystal writing film are used such as flowering structure: including successively arrange the first conductive layer,
Liquid crystal layer and the second conductive layer；Two conductive layers are each split into the conductive region of two or more mutually insulateds；Two
Erasing region is collectively formed in lap of the conductive region of conductive layer in space liquid crystal layer region corresponding with the part.
Further, two conductive layers are divided into two or more strip-shaped conductive regions of mutually insulated.
Further, each conductive region of the first conductive layer is distributed along first direction, is parallel to each other；Second conductive layer it is each
Conductive region is distributed in a second direction, is parallel to each other, and first direction and second direction are spatially interlaced；
Preferably, first direction is vertical with second direction.
This partitioning scheme can be such that cut zone minimizes according to actual needs convenient for industrial mass processing,
By the energization to different conductive strips, more accurate selective erase is realized.
Further, each conductive region of the first conductive layer at least should include a part at first conductive layer edge；
Each conductive region of second conductive layer at least should include a part at second conductive layer edge.
Fig. 3 gives the specific embodiment of liquid crystal writing film under present embodiment, comprising: is divided into the first conductive layer
Second conductive layer is divided into several longitudinal conductive regions by several transverse conductance regions, and each conductive region is equidistant；
Conductive region on first conductive layer and the conductive region on the second conductive layer be spatially be mutually perpendicular to it is staggered；First leads
The overlapped part of the conductive region on conductive region and the second conductive layer in electric layer forms erasing region.
The selective erase region on liquid crystal writing film is determined according to selective erase location information, to covering selective erase region
The conduction regions of two conductive layers apply voltage respectively, form erasing electric field in the selective erase region, realize to local wiping
Except the erasing in region.
Embodiment two
On the basis of example 1, the periphery of liquid crystal writing film is arranged in image positioning apparatus by the present embodiment, for example,
The bezel locations of clipboard or blackboard or drawing board are set.Image positioning apparatus includes two cameras, two cameras
It is separately positioned on peripheral C, D two o'clock of liquid crystal writing film, as shown in figure 4, each camera can be by constantly shooting writing
Image data in region be compared obtain write region in object relative distance position, as in Fig. 4 P point coordinate be (x,
Y), C, D camera pass through respectively takes that whether there is or not the image comparisons before and after P point object can calculate two camera of C, D automatically
To the distance Sc and Sd of P point, then:
It can obtain:
The liquid crystal writing film of present embodiment can be with the structure of existing liquid crystal writing film, can also be using in embodiment one
Two kinds of liquid crystal writing films any one, the structure of liquid crystal writing film repeats no more.
Embodiment three
In the present embodiment, image positioning apparatus is arranged except liquid crystal writing film, camera is arranged in liquid crystal writing
Any position that can be collected liquid crystal writing film and write regional image information except film, for example, for having liquid crystal writing
Any position can be arranged in classroom in camera by the blackboard of film, and the quantity of camera is unlimited, but under normal circumstances, it adopts
It can either be met the requirements with a camera.
Under such mode, the image information that liquid crystal writing film writes region is acquired by camera, passes through image recognition skill
Art identifies raclementum image information, is then positioned using framing technology to picture position.The image being related to is fixed
Position and image recognition technology are all made of the algorithm of current comparative maturity, such as: image recognition neural network based is calculated
Method and the localization method based on image characteristic point etc..
As a kind of simple embodiment, writing film is divided into several bands of position, acquires liquid crystal using camera
Raclementum image information on writing film, by taking whether there is or not the image comparison before and after raclementum, where obtaining raclementum
The band of position, and then obtain relative position information of the raclementum on liquid crystal writing film.
The liquid crystal writing film of present embodiment can be using any one of two kinds of liquid crystal writing films in embodiment one, liquid
The structure of brilliant writing film repeats no more.
Example IV
The present embodiment discloses liquid crystal writing film office on the basis of embodiment one or embodiment two or embodiment three
The concrete application product of Image Location System is wiped in portion, such as:
Selective erase Image Location System is applied on board, realizes the selective erase positioning function of board.
Further, for liquid crystal board, when writing, the same positioning using in embodiment one or embodiment two
Mode positions lettering pen position, and lettering pen location information is carried out to storage in chronological order and forms handwriting trace；Alternatively,
Handwriting trace is further converted to standard character or test pattern and is stored.
Further, communication unit is set on above-mentioned liquid crystal board, by way of wired or wireless communication
It is communicated with external equipment.
External equipment can be the mobile terminals such as mobile phone, PAD, and being also possible to PC machine or those skilled in the art can think
The other equipment terminal arrived.
Further, handwriting trace information is uploaded into Cloud Server through wireless communication, realizes and writes rail
The cloud of mark stores.
Similarly, liquid crystal writing film selective erase Image Location System can also be applied on blackboard or drawing board, and energy
It is enough by the handwriting trace information or standard character of storage or test pattern by communication unit be sent to external equipment or
Cloud.
Selective erase Image Location System is applied to luminous energy board, luminous energy liquid crystal by alternatively embodiment
The big liquid crystal writing blackboard of handwriting pad, luminous energy, luminous energy dust-free writing board, luminous energy Portable blackboard, electronic drawing board, lcd electronic writing plate,
Electronic handwritten plate, electronic recording notebook, drawing pad, children's handwriting pad, allowing child daubing drawing board, erasing rubber function sketching board, liquid
In other Related products that brilliant electronic painting plate or color liquid crystal handwriting pad or those skilled in the art can be known, with reality
The selective erase function of existing the said goods.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of liquid crystal writing film selective erase Image Location System characterized by comprising at least one image positioning dress
It sets, the image positioning apparatus includes at least one camera and the processor that connect with camera；The camera acquisition
Liquid crystal writing film writes the image information of the raclementum occurred in region and is sent to processor, and the processor is believed according to image
Relative position of the breath positioning raclementum on liquid crystal writing film, determines selective erase location information.
2. a kind of liquid crystal writing film selective erase Image Location System as described in claim 1, which is characterized in that described in judgement
Whether the size and/or shape of raclementum meets the requirement of selective erase setting, if so, executing selective erase；Otherwise, it does not hold
Row.
3. a kind of liquid crystal writing film selective erase Image Location System as described in claim 1, which is characterized in that the image
Positioning device is arranged in around liquid crystal writing film, and wherein camera is one.
4. a kind of liquid crystal writing film selective erase Image Location System as claimed in claim 3, which is characterized in that by liquid crystal book
The region that film is divided into two or more is write, the region where object image, positioning erasing object location are wiped by detection
Information.
5. a kind of liquid crystal writing film selective erase Image Location System as described in claim 1, which is characterized in that the image
Positioning device is arranged in around liquid crystal writing film, and wherein camera is two；
Determine raclementum in liquid crystal book using geometrical relationship by detection erasing the distance between object image and two cameras
Write the relative position information on film.
6. a kind of liquid crystal writing film selective erase Image Location System as described in claim 1, which is characterized in that the image
The edge of liquid crystal writing film is arranged in positioning device, and wherein camera is two；
Determine raclementum in liquid crystal book using geometrical relationship by detection erasing the distance between object image and two cameras
Write the relative position information on film.
7. a kind of board, which is characterized in that including the described in any item liquid crystal writing film selective erase images of claim 1-5
Positioning system；
Further,
The board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace
And it stores；
Further, the board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace
And it stores；
Communication unit, for perhaps cloud to be communicated and is sent to handwriting trace information or standard character with external equipment
External equipment or cloud.
8. a kind of blackboard, which is characterized in that fixed including the described in any item liquid crystal writing film selective erase images of claim 1-5
Position system；
Further,
The blackboard further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace
And it stores；
Further, the blackboard further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace
And it stores；
Communication unit, for perhaps cloud to be communicated and is sent to handwriting trace information or standard character with external equipment
External equipment or cloud.
9. a kind of drawing board, which is characterized in that fixed including the described in any item liquid crystal writing film selective erase images of claim 1-5
Position system；
Further,
The drawing board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace
And it stores；
Further, the drawing board further include:
Person's handwriting storage unit, for directly recording and storing handwriting trace information；Alternatively, converting standard character for handwriting trace
And it stores；
Communication unit, for perhaps cloud to be communicated and is sent to handwriting trace information or standard character with external equipment
External equipment or cloud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820998172.6U CN208722169U (en) | 2018-06-26 | 2018-06-26 | A kind of liquid crystal writing film selective erase Image Location System, board, blackboard, drawing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820998172.6U CN208722169U (en) | 2018-06-26 | 2018-06-26 | A kind of liquid crystal writing film selective erase Image Location System, board, blackboard, drawing board |
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| Publication Number | Publication Date |
|---|---|
| CN208722169U true CN208722169U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820998172.6U Active CN208722169U (en) | 2018-06-26 | 2018-06-26 | A kind of liquid crystal writing film selective erase Image Location System, board, blackboard, drawing board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110147182A (en) * | 2018-06-26 | 2019-08-20 | 山东蓝贝思特教装集团股份有限公司 | A kind of liquid crystal writing film selective erase Image Location System |
| CN114755853A (en) * | 2022-04-26 | 2022-07-15 | 义乌市百变电子科技有限公司 | Local erasing method for liquid crystal handwriting board applying virtual keyboard |
-
2018
- 2018-06-26 CN CN201820998172.6U patent/CN208722169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110147182A (en) * | 2018-06-26 | 2019-08-20 | 山东蓝贝思特教装集团股份有限公司 | A kind of liquid crystal writing film selective erase Image Location System |
| CN114755853A (en) * | 2022-04-26 | 2022-07-15 | 义乌市百变电子科技有限公司 | Local erasing method for liquid crystal handwriting board applying virtual keyboard |
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