CN110147172B - Writing track positioning and recording device and method based on liquid crystal writing film - Google Patents
Writing track positioning and recording device and method based on liquid crystal writing film Download PDFInfo
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- CN110147172B CN110147172B CN201810668960.3A CN201810668960A CN110147172B CN 110147172 B CN110147172 B CN 110147172B CN 201810668960 A CN201810668960 A CN 201810668960A CN 110147172 B CN110147172 B CN 110147172B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Electromagnetism (AREA)
- Position Input By Displaying (AREA)
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Abstract
The application discloses a writing track positioning and recording device and method based on a liquid crystal writing film, comprising a writing end, a writing track positioning system and a storage unit; the writing end is provided with an electromagnetic signal transmitting unit, the writing track positioning system comprises a liquid crystal writing film, the liquid crystal writing film is provided with an electromagnetic signal receiving unit, and the electromagnetic signal receiving unit receives electromagnetic signals transmitted by the electromagnetic signal transmitting unit and forms positioning signals of writing tracks; the electromagnetic signal receiving unit is connected with the storage unit, and the storage unit records the positioning signal of the writing track. The application can realize the storage of the writing track after positioning, is convenient for forming the history handwriting, and can search the writing content in time.
Description
Technical Field
The invention relates to the technical field of teaching aids, in particular to a writing track positioning and recording device and method based on a liquid crystal writing film.
Background
At present, the current situation of blackboard products is as follows: the conventional blackboard has a tendency to be gradually replaced by a liquid crystal blackboard, and the conventional liquid crystal blackboard can realize one-key erasure or partial erasure of handwriting.
The writing pen of the liquid crystal blackboard can generally write by a common hard object, and can not realize the functions of memorizing, storing, positioning and the like of writing tracks of the liquid crystal blackboard, although writing devices with writing identification exist in the prior art, the writing is realized by detecting the movement track of the pen with the pressed identification of the pen point, and the liquid crystal blackboard is realized by changing the arrangement of liquid crystal molecules, so that the writing devices with the existing writing identification can not be applied to the field of liquid crystal blackboards.
In summary, there is no effective solution for the technical problems of storing, reproducing, positioning, etc. of writing tracks in a liquid crystal blackboard in the prior art.
Disclosure of Invention
In order to solve the defects of the prior art, one of the purposes of the invention is to provide a writing track positioning and recording device based on a liquid crystal writing film, which has the functions of positioning, storing, reproducing and the like of tracks written on the liquid crystal writing film and prevents inconvenience caused by erroneous erasing.
The application also discloses a writing track positioning and recording device based on the liquid crystal writing film, which comprises a writing end, a writing track positioning system, a storage unit and/or a transmission unit;
an electromagnetic signal transmitting unit is arranged on the writing end;
the writing track positioning system comprises a liquid crystal writing film and an electromagnetic signal receiving unit;
The electromagnetic signal receiving unit receives the electromagnetic signal emitted by the writing end and forms a positioning signal of a writing track;
The electromagnetic signal receiving unit is connected with the storage unit and/or the transmission unit, and the storage unit records the positioning signal of the writing track or the transmission unit transmits the positioning signal of the writing track.
The application also discloses another writing track positioning and recording device based on the liquid crystal writing film, which is characterized by comprising a writing end, a writing track positioning system, a storage unit and/or a transmission unit;
the writing end is provided with an electromagnetic signal transmitting unit, a pressure sensor and a pressure signal transmission unit;
the writing track positioning system comprises a liquid crystal writing film and an electromagnetic signal receiving unit;
The electromagnetic signal receiving unit receives the electromagnetic signals transmitted by the electromagnetic signal transmitting unit and forms positioning signals of writing tracks;
the pressure sensor detects a written pressure signal and transmits the pressure signal to the pressure signal receiving unit;
The data received by the pressure signal receiving unit and the positioning signal of the writing track are recorded and stored through the storage unit and/or the transmission unit.
In a further preferred embodiment, the electromagnetic signal receiving unit is a closed loop capable of receiving an electromagnetic signal, and the closed loop is formed by a conductive area located on the liquid crystal writing film.
According to a further preferred technical scheme, the positioning signal of the writing track is transmitted to a storage unit, the storage unit is arranged in a writing end or equipment where a liquid crystal writing film is located, and data transmission to a user terminal is achieved through a corresponding interface; or (b)
The positioning signals of the writing track are transmitted to the cloud end through the transmission unit, and the user terminal realizes data check through accessing the cloud end.
The application also discloses a writing end of the writing track positioning and recording device based on the liquid crystal writing film, wherein an electromagnetic signal transmitting unit is arranged on the writing end;
further, the writing end is also provided with a pressure sensor, a storage unit and/or a transmission unit;
The pressure sensor detects a written pressure signal;
an electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
the written pressure signal and the locating signal of the writing track are recorded and stored through the storage unit and/or the transmission unit.
The application also discloses a writing track positioning and recording method based on the liquid crystal writing film, which comprises the following steps:
an electromagnetic signal transmitting unit on the writing end transmits electromagnetic signals;
an electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
and transmitting the positioning signal of the writing track to a storage unit and/or a transmission unit for recording and storing.
The application also discloses another writing track positioning and recording method based on the liquid crystal writing film, which comprises the following steps:
an electromagnetic signal transmitting unit on the writing end transmits electromagnetic signals;
An electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
The pressure sensor on the writing end detects a written pressure signal, and transmits the pressure signal to the pressure signal receiving unit, wherein the pressure signal is used for converting the written pressure signal into a track with changed writing thickness and forming handwriting;
The data received by the pressure signal receiving unit and the positioning signal of the writing track are recorded and stored by the storage unit and/or the transmission unit.
The application also discloses a handwriting board, which comprises the writing track positioning and recording device based on the liquid crystal writing film in the above schemes.
The application also discloses a blackboard which comprises the writing track positioning and recording device based on the liquid crystal writing film.
The application also discloses a drawing board which comprises the writing track positioning and recording device based on the liquid crystal writing film.
Compared with the prior art, the invention has the beneficial effects that:
1. The application can realize the storage of the writing track after positioning, is convenient for forming the history handwriting, can search the writing content in time, and can realize the remote checking of the writing content.
2. The writing end is provided with the pressure sensor, so that the writing end is large in pressure, thick in handwriting, small in pressure and thin in handwriting, and therefore the thickness of the writing track can be detected, and handwriting can be formed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a block diagram of a writing trace positioning and recording apparatus based on a liquid crystal writing film according to embodiment 1 of the present application;
FIG. 2 is a block diagram showing a writing trace positioning and recording apparatus based on a liquid crystal writing film according to embodiment 2 of the present application;
fig. 3 shows a specific structure of a liquid crystal writing film according to an embodiment of the present application.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
As shown in fig. 1, the writing track positioning and recording device based on the liquid crystal writing film comprises a writing end, a writing track positioning system, a storage unit and/or a transmission unit;
an electromagnetic signal transmitting unit is arranged on the writing end;
the writing track positioning system comprises a liquid crystal writing film and an electromagnetic signal receiving unit;
The electromagnetic signal receiving unit receives the electromagnetic signal emitted by the writing end and forms a positioning signal of a writing track;
The electromagnetic signal receiving unit is connected with the storage unit and/or the transmission unit, and the storage unit records the positioning signal of the writing track or the transmission unit transmits the positioning signal of the writing track.
In a specific embodiment, the storage unit may be included in the writing track positioning and recording device based on the liquid crystal writing film, or may not be provided in the writing track positioning and recording device based on the liquid crystal writing film, and only the positioning signal of the writing track is transmitted to the server or other external devices through the transmission unit.
And after receiving the positioning signal of the writing track, the external equipment further performs data processing, stores the positioning signal in a picture, pdf format or text format during storage, and displays the positioning signal on a display.
In the application, the storage unit is also connected with a control circuit, the control circuit is connected to a signal transmission interface, the signal transmission can adopt wired, wireless and other modes, the transmission interface adopts transmission equipment corresponding to the transmission modes, and the specific transmission interface is not tired any more and can be realized by adopting related technology in the prior art. And transmitting the data to the user terminal through the signal transmission interface. The user terminal is a mobile phone, an ipad, a computer terminal or the like, and the content written by the writing end on the liquid crystal panel is checked through the terminal equipment.
In still another embodiment of the present application, the writing track positioning system further includes a wireless signal transmitting module, the wireless signal transmitting module sends the writing information to a remote wireless signal receiving module, so as to realize the storage of the writing, the storage content can be stored to a cloud end through a network, the cloud end realizes the remote storage of the writing, and the user terminal performs the query of the writing information by accessing the cloud end data.
In this embodiment of the present application, when the usage population of the liquid crystal panel is large, that is, when different users all write on the corresponding liquid crystal writing film by adopting the writing end, only a local storage mode is needed to perform better monitoring management on the content written by a large number of liquid crystal writing ends, so that a remote storage mode is needed, the remote storage mode is to transmit the information written by the liquid crystal writing end to the cloud end through a network or the like, relevant information of different liquid crystal writing ends is stored in the cloud end, and relevant personnel view the relevant information written by different users through the cloud end, so that on one hand, viewing on the usage situation of different users can be realized, and on the other hand, the problems of insufficient storage capacity, easy loss of storage and the like caused by the local storage can also be avoided from the perspective of the users.
Specifically, in the application, the writing end is a writing tip or any other structure capable of meeting the writing requirement, the writing end is provided with a signal transmitting unit, the signal transmitting unit is a signal transmitting source and can transmit electromagnetic signals, and the signal receiving unit is used for receiving the electromagnetic signals transmitted by the transmitting source.
The electromagnetic signal receiving unit is a closed loop capable of receiving electromagnetic signals, and the closed loop is formed by a conductive area positioned on the liquid crystal writing film.
As a preferred embodiment, the liquid crystal writing film includes a first conductive layer, a liquid crystal layer, and a second conductive layer arranged in this order;
The first conductive layer or the second conductive layer is divided into at least two groups of mutually insulated conductive areas, the maximum width of the first group of conductive areas is smaller than a set value A, the minimum width of the second group of conductive areas is larger than a set value B, A is smaller than B, the two groups of conductive areas are distributed at intervals, and the same group of conductive areas are not adjacent;
the first set of conductive areas as signal receiving areas, each two adjacent first set of conductive areas may be configured as a closed loop receiving an external electromagnetic signal, the closed loop connecting a master controller, the electromagnetic signal received by the master controller being converted into a positioning signal; the second set of conductive regions serves as an erase region.
The invention forms at least two different conductive areas by cutting the conductive layer, which are called a narrow conductive area and a wide conductive area for the sake of simple explanation, wherein the narrow conductive area and the wide conductive area can have various sizes or shapes as long as the set requirement is met, so that the narrow conductive area and the wide conductive area form a closed loop, when an object with electromagnetic wave signals approaches, induced current can be generated, and the general position of the object on a writing film can be confirmed by the generation position and the intensity of the induced current, thereby realizing positioning.
Preferably, each conductive region is a strip-shaped conductive region. Or the ribbon conductive areas are parallel to each other.
In consideration of processing cost and difficulty of the process, the conductive layer is divided into the strip-shaped conductive areas, and further, the strip-shaped conductive areas are mutually arranged in parallel, so that the processing efficiency is improved, the process cost is reduced, and batch production is facilitated.
Preferably, each conductive area should include at least a portion of the edge of the conductive layer to which it belongs, which is advantageous in providing a wiring location for the conductive areas, facilitating manufacturing and processing, and the conductive lines do not affect writing quality when in use.
The width of each conductive area in each group of conductive areas is the same; the equidistant dividing mode ensures that the dividing is more uniform and the erasing area can be effectively controlled; and, the smaller the pitch, the higher the local erase accuracy.
As shown in fig. 3, another structural form of the liquid crystal writing film is: the liquid crystal display device comprises a first conductive layer, a liquid crystal layer and a second conductive layer which are sequentially arranged;
The first conductive layer and the second conductive layer are divided into at least two groups of mutually insulated conductive areas, the maximum width of the first group of conductive areas is smaller than a set value A, the minimum width of the second group of conductive areas is larger than a set value B, A is smaller than B, the two groups of conductive areas are distributed at intervals, and the same group of conductive areas are not adjacent;
the first set of conductive areas as signal receiving areas, each two adjacent first set of conductive areas may be configured as a closed loop receiving an external electromagnetic signal, the closed loop connecting a master controller, the electromagnetic signal received by the master controller being converted into a positioning signal; the second set of conductive regions serves as an erase region.
According to the application, the upper conductive layer and the lower conductive layer are respectively divided, so that different voltages can be applied to different conductive areas of the upper conductive layer and the lower conductive layer, and the electric field control mode is more flexible.
In addition, the upper conductive layer and the lower conductive layer are respectively divided, so that when an object with electromagnetic wave signals approaches, the first group of conductive areas at the corresponding positions of the upper conductive layer and the lower conductive layer can generate induced current, and the position of the object on the writing film can be confirmed through the generation position and the intensity of the induced current, so that positioning is realized. The positioning of the system belongs to two-dimensional positioning, the coordinates of the object in two directions (x and y axes) relative to the horizontal plane of the writing film can be known, the positioning area is miniaturized, and the positioning effect is better.
Preferably, the first conductive layer or the second conductive layer is divided into two or more strip-shaped conductive regions insulated from each other.
Preferably, the conductive areas of the first conductive layer are distributed along the first direction and are parallel to each other; the conductive areas of the second conductive layer are distributed along a second direction and are parallel to each other, and the first direction and the second direction are spatially staggered; or the first direction is perpendicular to the second direction.
The splitting mode is convenient for industrialized batch processing, meanwhile, the splitting area can be miniaturized according to actual needs, and more accurate local erasure is realized by electrifying different conductive strips.
In particular embodiments, each conductive region of the first conductive layer should comprise at least a portion of an edge of the first conductive layer; each conductive region of the second conductive layer should include at least a portion of an edge of the second conductive layer.
The widths of the first group of conductive areas on the first conductive layer are the same, and the widths of the second group of conductive areas are the same; the first group of conductive areas on the second conductive layer have the same width, and the second group of conductive areas have the same width.
The width of the first group of conductive areas on the first conductive layer is the same as the width of the first group of conductive areas on the second conductive layer; or (b)
The width of the second set of conductive areas on the first conductive layer is the same as the width of the second set of conductive areas on the second conductive layer.
The arrangement mode can coordinate the whole writing film, ensures that when an object with electromagnetic wave signals approaches, the first group of conductive areas at the corresponding positions of the upper conductive layer and the lower conductive layer can generate induced current, and confirms the x-axis coordinate and the y-axis coordinate of the object on the writing film through the generation position and the intensity of the induced current, and the positioning area is miniaturized and has better positioning effect.
Meanwhile, the arrangement mode is convenient to process, ensures that the erasable areas are consistent in size, is more beneficial to positioning and local erasing, and brings better writing experience to users.
Preferably, at least one of the first conductive layer and the second conductive layer is disposed on the base layer. The substrate layer can play a bearing role for the conducting layer, so that the overall stability of the writing film is improved.
Preferably, an insulating layer is provided between at least one of the first conductive layer and the second conductive layer and the liquid crystal layer. The insulation layer can better realize the isolation between the liquid crystal layer and the conductive layer, and the service life of the writing film is prolonged.
The application also specifically discloses a writing track positioning and recording method based on the liquid crystal writing film, which comprises the following steps:
an electromagnetic signal transmitting unit on the writing end transmits electromagnetic signals;
an electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
and transmitting the positioning signal of the writing track to a storage unit and/or a transmission unit for recording and storing.
The method can realize the positioning, recording, storage and the like of the writing track.
The application also discloses a writing end of the writing track positioning and recording device based on the liquid crystal writing film, and the writing end is provided with an electromagnetic signal transmitting unit.
Preferably, a writing end of the writing track positioning and recording device based on the liquid crystal writing film is further provided with a pressure sensor, a storage unit and/or a transmission unit;
The pressure sensor detects a written pressure signal;
an electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
the written pressure signal and the locating signal of the writing track are recorded and stored through the storage unit and/or the transmission unit.
The pressure sensor is arranged at the writing end to detect the pressure applied by the writing end during writing, and the pressure signal is restored into handwriting with different thicknesses in further data processing, so that the writing content can be displayed better.
Example 2
As shown in FIG. 2, the application also discloses another writing track positioning and recording device based on the liquid crystal writing film, which comprises a writing end, a writing track positioning system, a storage unit and/or a transmission unit
The writing end is provided with an electromagnetic signal transmitting unit, a pressure sensor and a pressure signal transmitting unit, the writing track positioning system comprises a liquid crystal writing film, the liquid crystal writing film is provided with an electromagnetic signal receiving unit, and the electromagnetic signal receiving unit receives electromagnetic signals transmitted by the electromagnetic signal transmitting unit and forms positioning signals of writing tracks;
the pressure sensor detects a written pressure signal and transmits the pressure signal to the pressure signal receiving unit;
The data received by the pressure signal receiving unit and the positioning signal of the writing track are recorded and stored through the storage unit and/or the transmission unit.
In a specific embodiment, the storage unit may be included in the writing track positioning and recording device based on the liquid crystal writing film, or may not be provided in the writing track positioning and recording device based on the liquid crystal writing film, and only the positioning signal of the writing track is transmitted to the server or other external devices through the transmission unit.
And after receiving the positioning signal of the writing track, the external equipment further performs data processing, stores the positioning signal in a picture, pdf format or text format during storage, and displays the positioning signal on a display.
When the writing end is used for writing in practice, when the pressure used by the writing end is high, the writing end can generate high pressure, the handwriting formed on the liquid crystal film by the high pressure forms thick handwriting by utilizing a signal processing means, the handwriting writing state can be detected in real time by the mode, the handwriting with thick and thin performance opposite to the writing pressure can be restored, and the writing state can be better displayed by the technical means.
Preferably, the electromagnetic signal receiving unit is a closed loop that can receive an electromagnetic signal, and the closed loop is formed by a conductive area on the liquid crystal writing film.
Specifically, the liquid crystal writing film comprises a first conductive layer, a liquid crystal layer and a second conductive layer;
The first conductive layer and/or the second conductive layer is/are divided into at least two groups of mutually insulated conductive areas, the maximum width of the first group of conductive areas is smaller than a set value A, the minimum width of the second group of conductive areas is larger than a set value B, A is smaller than B, the two groups of conductive areas are distributed at intervals, and the same group of conductive areas are not adjacent;
the first set of conductive areas as signal receiving areas, each two adjacent first set of conductive areas may be configured as a closed loop receiving an external electromagnetic signal, the closed loop connecting a master controller, the electromagnetic signal received by the master controller being converted into a positioning signal; the second set of conductive regions serves as an erase region.
The specific structure of the liquid crystal writing film is schematically the same as that of the liquid crystal writing film of embodiment 1, and will not be described in detail here.
The application also discloses another writing track positioning and recording method based on the liquid crystal writing film, which comprises the following steps:
an electromagnetic signal transmitting unit on the writing end transmits electromagnetic signals;
An electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
The pressure sensor on the writing end detects a written pressure signal, and transmits the pressure signal to the pressure signal receiving unit, wherein the pressure signal is used for converting the written pressure signal into a track with changed writing thickness and forming handwriting;
The data received by the pressure signal receiving unit and the positioning signal of the writing track are recorded and stored by the storage unit and/or the transmission unit.
The technical scheme provided by the invention has wide application fields, and the applicable fields comprise: the electronic writing board comprises a writing board, a light energy liquid crystal handwriting board, a light energy large liquid crystal writing board, a light energy dust-free writing board, a light energy portable blackboard, an electronic drawing board, an lcd electronic writing board, an electronic handwriting board, an electronic note notebook, a graffiti board, a child handwriting board, a child graffiti drawing board, an eraser function sketch board, a liquid crystal electronic drawing board, a color liquid crystal handwriting board and the like.
In order to make the specific embodiments of the present invention more clear to the reader, the following application examples are provided.
In a first application embodiment, a handwriting board is disclosed, and the handwriting board comprises a writing track positioning and recording device based on a liquid crystal writing film in the above schemes.
A second application embodiment discloses a blackboard comprising the writing track positioning and recording device based on the liquid crystal writing film.
In a third embodiment, a drawing board is disclosed, which includes the writing track positioning and recording device based on the liquid crystal writing film.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. The writing track positioning and recording device based on the liquid crystal writing film is characterized by comprising a writing end, a writing track positioning system, a storage unit and/or a transmission unit;
the writing end is provided with an electromagnetic signal transmitting unit, a pressure sensor and a pressure signal transmission unit;
the writing track positioning system comprises a liquid crystal writing film and an electromagnetic signal receiving unit;
The electromagnetic signal receiving unit receives the electromagnetic signals transmitted by the electromagnetic signal transmitting unit and forms positioning signals of writing tracks;
the pressure sensor detects a written pressure signal and transmits the pressure signal to the pressure signal receiving unit;
The pressure signal receiving unit is used for receiving the data and writing the positioning signals of the track, and the positioning signals are recorded and stored by the storage unit and/or the transmission unit;
The electromagnetic signal receiving unit is a closed loop capable of receiving electromagnetic signals, and the closed loop is formed by a conductive area positioned on the liquid crystal writing film; the method comprises the following steps:
The liquid crystal writing film comprises a first conductive layer, a liquid crystal layer and a second conductive layer which are sequentially arranged;
The first conductive layer or the second conductive layer is divided into at least two groups of mutually insulated conductive areas, the maximum width of the first group of conductive areas is smaller than a set value A, the minimum width of the second group of conductive areas is larger than a set value B, A is smaller than B, the two groups of conductive areas are distributed at intervals, and the same group of conductive areas are not adjacent;
the first set of conductive areas as signal receiving areas, each two adjacent first set of conductive areas may be configured as a closed loop receiving an external electromagnetic signal, the closed loop connecting a master controller, the electromagnetic signal received by the master controller being converted into a positioning signal; a second set of conductive regions as erase regions;
through the cutting to the conducting layer, form two kinds at least different electrically conductive regions, divide into narrow electrically conductive district and wide electrically conductive district, narrow electrically conductive district and wide electrically conductive district interval set up, make narrow electrically conductive district form closed loop, when the object that has electromagnetic wave signal is close, just can produce induced current, through induced current's production position and intensity, realize the location.
2. The writing track positioning and recording device based on the liquid crystal writing film according to claim 1, wherein the positioning signal of the writing track is transmitted to a storage unit, the storage unit is arranged in a writing end or a device where the liquid crystal writing film is located, and data transmission to a user terminal is realized through a corresponding interface; or (b)
The positioning signals of the writing track are transmitted to the cloud end through the transmission unit, and the user terminal realizes data check through accessing the cloud end.
3. A writing trace positioning and recording method based on a liquid crystal writing film, based on the writing trace positioning and recording device based on a liquid crystal writing film according to any one of claims 1-2, characterized by comprising:
an electromagnetic signal transmitting unit on the writing end transmits electromagnetic signals;
An electromagnetic signal receiving unit positioned on the liquid crystal writing film receives the electromagnetic signal emitted by the electromagnetic signal emitting unit and forms a positioning signal of a writing track;
The pressure sensor on the writing end detects a written pressure signal, and transmits the pressure signal to the pressure signal receiving unit, wherein the pressure signal is used for converting the written pressure signal into a track with changed writing thickness and forming handwriting;
The data received by the pressure signal receiving unit and the positioning signal of the writing track are recorded and stored by the storage unit and/or the transmission unit.
4. A writing pad comprising the writing trace positioning and recording device based on a liquid crystal writing film according to any one of claims 1 to 2.
5. A blackboard comprising the writing trace positioning and recording device based on a liquid crystal writing film according to any one of claims 1 to 2.
6. A drawing board comprising the writing trace positioning and recording apparatus based on a liquid crystal writing film according to any one of claims 1 to 2.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668960.3A CN110147172B (en) | 2018-06-26 | 2018-06-26 | Writing track positioning and recording device and method based on liquid crystal writing film |
| CA3057909A CA3057909C (en) | 2018-05-30 | 2019-01-10 | Liquid crystal writing film, partial erasing method, multi-voltage output circuit and positioning system capable of partial erasing |
| JP2019564923A JP7130676B2 (en) | 2018-05-30 | 2019-01-10 | Partially erasable liquid crystal writing film, partial erasing method, multi-voltage output circuit and positioning system |
| AU2019236746A AU2019236746B2 (en) | 2018-05-30 | 2019-01-10 | Liquid crystal writing film, partial erasing method, multi-voltage output circuit and positioning system capable of partial erasing |
| PCT/CN2019/071227 WO2019227942A1 (en) | 2018-05-30 | 2019-01-10 | Liquid crystal writing film capable of implementing local erasure, local erasure method, multi-voltage output circuit, and positioning system |
| US16/492,689 US11137899B2 (en) | 2018-05-30 | 2019-01-10 | Liquid crystal writing film, partial erasing method, multi-voltage output circuit and positioning system capable of partial erasing |
| EP19786258.4A EP3605213B1 (en) | 2018-05-30 | 2019-01-10 | Liquid crystal writing film capable of implementing local erasure, local erasure method, multi-voltage output circuit, and positioning system |
| KR1020197034181A KR102328206B1 (en) | 2018-05-30 | 2019-01-10 | Liquid crystal writing film with partial erasure, partial erasure method, multiple voltage output circuit and positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668960.3A CN110147172B (en) | 2018-06-26 | 2018-06-26 | Writing track positioning and recording device and method based on liquid crystal writing film |
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| Publication Number | Publication Date |
|---|---|
| CN110147172A CN110147172A (en) | 2019-08-20 |
| CN110147172B true CN110147172B (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810668960.3A Active CN110147172B (en) | 2018-05-30 | 2018-06-26 | Writing track positioning and recording device and method based on liquid crystal writing film |
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| CN208722161U (en) * | 2018-06-26 | 2019-04-09 | 山东蓝贝思特教装集团股份有限公司 | Handwriting trace positioning and recording device, handwriting pad, blackboard, drawing board, writing end based on liquid crystal writing film |
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| TW201227454A (en) * | 2010-12-31 | 2012-07-01 | Hong-Da Liu | An active array having the touchable sensing matrix unit and a display having the active array |
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| WO2016176508A1 (en) * | 2015-04-28 | 2016-11-03 | Wicue, Inc. | Liquid crystal writing device |
| CN207148786U (en) * | 2017-07-07 | 2018-03-27 | 深圳华瑆电子有限公司 | Former writing display input device based on the hand-written film of bistable liquid crystal |
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| CN205451025U (en) * | 2015-12-29 | 2016-08-10 | 深圳市南方天硕科技有限公司 | LCD is write by hand to electromagnetism electric capacity integral type |
| CN206892836U (en) * | 2017-03-31 | 2018-01-16 | 鉅瞻科技股份有限公司 | Electronic writing device |
| CN208722161U (en) * | 2018-06-26 | 2019-04-09 | 山东蓝贝思特教装集团股份有限公司 | Handwriting trace positioning and recording device, handwriting pad, blackboard, drawing board, writing end based on liquid crystal writing film |
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