CN107844225A - Electromagnetic touch device and its coordinate location method - Google Patents
Electromagnetic touch device and its coordinate location method Download PDFInfo
- Publication number
- CN107844225A CN107844225A CN201711164067.9A CN201711164067A CN107844225A CN 107844225 A CN107844225 A CN 107844225A CN 201711164067 A CN201711164067 A CN 201711164067A CN 107844225 A CN107844225 A CN 107844225A
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- Prior art keywords
- coil
- electromagnetic
- display
- effective
- marginal zone
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
Abstract
The present invention provides a kind of electromagnetic touch device, including electromagnetic handwritten driving plate and electromagnetic hand-writing pen, the electromagnetic handwritten driving plate includes the antenna plate that multigroup first coil is distributed with, the antenna plate also includes the second coil for being arranged on the effective marginal zone of the display of the length direction of the antenna plate, the width of second coil is 2/3rds of the width of the first coil, and second coil covers the effective marginal zone of the display of the antenna plate length direction and is at least partially disposed at outside the effective marginal zone of the display.Compared with correlation technique, electromagnetic touch device provided by the invention, positioning precision is high, is easy to calculate and can utilize existing algorithm with regard to that can calculate the position of electromagnetic hand-writing pen；Show that transmission signal, induced signal intensity significantly improve simultaneously by first coil and the second coil for effective marginal zone.
Description
Technical field
The present invention relates to electromagnetic handwritten to input field, more particularly to a kind of electromagnetic touch device and its coordinate location method.
Background technology
Electromagnetic touch device is a kind of conventional computer peripheral equipment product, and matched equipment is magnetic board.Electricity
The data such as trajectory coordinates that magnetic touch control device moves on magnetic board, pressure size can send computer to by magnetic board,
And then realize the purpose of Writing-painting.
The effective marginal zone of display of the antenna plate of traditional electromagnetic touch device is general only to be covered by an aerial coil, this
Sample, when writing pencil is in antenna plate intermediate region, it can be positioned by three aerial coils, still, when writing pencil is aobvious at this
When showing efficient frontier writing, the positioning to writing pencil only has two coils, causes the positioning of writing pencil not accurate enough.
Therefore, it is necessary to provide a kind of new electromagnetic touch device and its localization method solves the above problems.
The content of the invention
Present invention solves the technical problem that being to provide a kind of electromagnetic touch device and its localization method, it can accurately be calculated
Electromagnetic hand-writing pen is in the position of the effective marginal zone of display of electromagnetic handwritten driving plate.
In order to solve the above technical problems, the present invention provides a kind of electromagnetic touch device, including electromagnetic handwritten driving plate and use
In the handwriting input in the electromagnetic handwritten driving plate and the electromagnetic hand-writing pen of the magnetic line of force can be launched, the electromagnetic handwritten driving plate
Antenna plate including multigroup first coil is distributed with, length direction array of the first coil along the antenna plate are set, institute
Stating the display effective district of antenna plate includes display effective district central area and the display effective edge around the effective central area of display
Edge area, effective district is shown described in length direction array distribution of the first coil along the antenna plate, the antenna plate is also wrapped
Include the second coil of the effective marginal zone of the display for the length direction for being arranged on the antenna plate, the width of second coil
For 2/3rds of the width of the first coil, second coil covers the described of the antenna plate length direction and shown
Effect marginal zone is simultaneously at least partially disposed at outside the effective marginal zone of the display.
Preferably：Second coil of one half width covers the display effective edge of the length direction of the antenna plate
Edge area, second coil of another half width are located at outside the effective marginal zone of the display.
Preferably：Launch letter simultaneously positioned at the first coil of the effective marginal zone of display and second coil
Number.
Present invention also offers a kind of coordinate location method, applied to described electromagnetic touch device, comprises the following steps：
First coil described in Scanning Detction and second coil, obtain and feel in the first coil and second coil
Three maximum coils of induction signal；
The electromagnetic hand-writing pen is calculated in the electromagnetic handwritten driving plate by three maximum coils of induced signal
Position.
Preferably：When the electromagnetic hand-writing pen is in the effective marginal zone of the display, pass through second coil
Position of the electromagnetic hand-writing pen in the electromagnetic handwritten driving plate is calculated with two first coils.
Compared with correlation technique, electromagnetic touch device provided by the invention, it passes through in the aobvious of electromagnetic handwritten driving plate
It is shown with outside effect area edge and coil is set, so that electromagnetic handwritten driving plate can also passes through three when showing effective area edge writing
Individual coil is positioned, and significantly improves positioning precision；The width that will be displayed with imitating the coil outside area edge is arranged to display effectively
2/3rds of the width of coil in area, not only it is easy to calculate, and existing algorithm can be utilized with regard to Electromagnetic hand can be calculated
Write the position of pen；Show that transmission signal, induced signal intensity significantly carry simultaneously by first coil and the second coil for effective marginal zone
It is high.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, and drawings in the following description are only some embodiments of the present invention, common for this area
For technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings, its
In：
Fig. 1 is a kind of structured flowchart of electromagnetic touch device provided in an embodiment of the present invention；
Fig. 2 is first coil and the second coil in a kind of antenna plate of electromagnetic touch device provided in an embodiment of the present invention
Distribution schematic diagram；
Fig. 3 is a kind of coordinate location method flow chart provided in an embodiment of the present invention.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only the part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
All other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Referring to Fig. 1, the present invention provides a kind of electromagnetic touch device 100, including electromagnetic handwritten driving plate 1 and in institute
State handwriting input in electromagnetic handwritten driving plate 1 and the electromagnetic hand-writing pen 2 of the magnetic line of force can be launched, the electromagnetic handwritten driving plate 1 is wrapped
Include antenna plate 11 and controller 12.
The electromagnetic hand-writing pen 2 is the hand input device for being internally provided with resonance circuit, and it can produce electricity after being excited
Magnetic strength induction signal.
The electromagnetic handwritten driving plate 1 is to be internally provided with the device of the antenna plate 11 and the controller 12, described
Electromagnetic hand-writing pen 2 can move input, the electromagnetic handwritten driving plate in the display effective district of the electromagnetic handwritten driving plate 1
1 detects the input trajectory of the electromagnetic hand-writing pen 2 by the antenna plate 11 and the controller 12.
The controller 12 includes sending module 120, receiving module 121, processing module 122 and control module 123.It is described
Control module 123 includes processor 1231, controls other modules to carry out operations.
Sending module 120 includes the variable connector 1202 of signal generator 1201 and first, and the signal generator 1201 can
To generate specified waveform signal, and the transmit coil in antenna plate is sent to by first variable connector 1202, it is described more
Way switch 1202 only opens one group of transmitting coil every time, and sends what the signal generator 1201 generated to this group of transmitting coil
Electromagnetic wave.The electromagnetic wave that this group of transmit coil is sent when electromagnetic hand-writing pen 11 is close to antenna plate 12, through in electromagnetic hand-writing pen 11
The resonance circuit in portion.
Electromagnetic induction signal is produced after resonance.The electromagnetic induction signal is received by receiving coil.Receiving module 121 includes the
Two variable connectors 1211 and amplifier 1212.Second variable connector can open one group of receiving coil every time, and the group is connect
Take-up circle is scanned detection, obtains the electromagnetic induction signal that this group of receiving coil receives, will after the amplification of amplifier 1212
The amplified signal is sent to processing module 122.Processing module 122 includes process circuit 1221, integrating circuit 1222 and sampling electricity
Road 1223.Amplification from receiving module 121 integrates life after process circuit 1221 carries out predetermined processing by integrating circuit 1222
Into integrated signal, and using the amplitude maximum of the sample integration signal of A/D sample circuits 1223, signal amplitude is obtained, by described in
Signal amplitude is sent to the processor 1231 of control module 123.
Please in the lump with reference to shown in Fig. 2, the display effective district (not indicating) of the antenna plate 11 includes display effective district center
Area 111 and it is distributed with the effective marginal zone 112 of display of the effective central area 111 of the display, the antenna plate 11 multigroup
First coil 113.Effective district is shown described in length direction array distribution of the first coil 113 along the antenna plate 11.
The antenna plate 11 also includes the effective marginal zone 112 of display for the length direction for being respectively distributed to the antenna plate 11
The second coil 114, the width of second coil 114 is 2/3rds of the width of the first coil 113.Described second
Coil 114 covers the effective marginal zone 112 of the display of the length direction of antenna plate 11 and is at least partially disposed at this and shows
Imitate outside marginal zone 112.114 first transmission signal of the first coil 113 and second coil, transmitting switch to connect at once after terminating
Receive, letter is launched by the first coil 113 and second coil 114 simultaneously in the region of the effective marginal zone 112 of display
Number, induced signal intensity significantly improves, so, without setting two layers of coil being arranged in a mutually vertical manner as traditional antenna plate, because
And the structure of the antenna plate 11 provided by the invention is simpler, manufacturing cost more cheap, and in the marginal zone of antenna plate 11
Also there is stronger induced signal intensity.
In the embodiment of the present invention, second coil 114 of a half width covers the antenna plate 11
The effective marginal zone 112 of the display of length direction, second coil 114 of another half width are located at the display efficient frontier
Outside area 112, so, not only it is easy to calculate, and existing algorithm can be utilized with regard to 2 positions of electromagnetic hand-writing pen can be calculated.
Also referring to Fig. 3, present invention also offers a kind of coordinate location method, is set applied to described electromagnetic touch,
100, comprise the following steps：
First coil 113 described in S1, Scanning Detction and second coil 114, obtain the first coil 113 and described
Three maximum coils of induced signal in second coil 114；
The electromagnetic hand-writing pen 2 is calculated in the electromagnetic handwritten driving plate 1 by three maximum coils of induced signal
Position.
When the electromagnetic hand-writing pen 2 is in the effective marginal zone 112 of the display, pass through second coil 114
Position of the electromagnetic hand-writing pen 2 in the electromagnetic handwritten driving plate 1 is calculated with two first coils 113.Certainly, when
When the electromagnetic hand-writing pen 2 is positioned at the display effective central area 111, institute can be calculated by three first coils 113
State position of the electromagnetic hand-writing pen 2 in the electromagnetic handwritten driving plate 1.So, the electromagnetic hand-writing pen 2 is in the electromagnetic handwritten
Any position of the display effective district of driving plate 1 can have three coils to be positioned simultaneously, can not only be obviously improved institute
Registration of the electromagnetic hand-writing pen 2 in the effective marginal zone 112 of display is stated, can also effectively lift the electromagnetic handwritten driving
The overall positioning performance of plate 1.
Compared with correlation technique, electromagnetic touch device 100 provided by the invention, it passes through in electromagnetic handwritten driving plate 1
The effective area edge of display outside coil is set so that electromagnetic handwritten driving plate 1 also can when showing the writing of effective area edge
Positioned by three coils, significantly improve positioning precision；The width that will be displayed with imitating the coil outside area edge is arranged to aobvious
Show 2/3rds of the width of the coil in effective district, be not only easy to calculate, and existing algorithm can be utilized just to calculate
2 positions of electromagnetic hand-writing pen.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (5)
1. a kind of electromagnetic touch device, including electromagnetic handwritten driving plate and for the handwriting input in the electromagnetic handwritten driving plate
And the electromagnetic hand-writing pen of the magnetic line of force can be launched, the electromagnetic handwritten driving plate includes the antenna plate that multigroup first coil is distributed with,
Length direction array of the first coil along the antenna plate is set, and the display effective district of the antenna plate includes display effectively
Area's central area and the effective marginal zone of display for surrounding the effective central area of display, length of the first coil along the antenna plate
Effective district is shown described in degree direction array distribution, it is characterised in that：The antenna plate also includes the length for being arranged on the antenna plate
The second coil of the effective marginal zone of the display in direction is spent, the width of second coil is the width of the first coil
2/3rds, second coil covers the effective marginal zone of the display of the antenna plate length direction and is at least partially disposed at
Outside the effective marginal zone of the display.
2. electromagnetic touch device according to claim 1, it is characterised in that：Second coil covering institute of one half width
State the effective marginal zone of the display of the length direction of antenna plate, it is effective that second coil of another half width is located at the display
Outside marginal zone.
3. electromagnetic touch device according to claim 1 or 2, it is characterised in that：Positioned at the effective marginal zone of display
The first coil and second coil while transmission signal.
A kind of 4. coordinate location method, applied to electromagnetic touch device as claimed in claim 1, it is characterised in that including such as
Lower step：
First coil described in Scanning Detction and second coil, obtain and letter is sensed in the first coil and second coil
Number three maximum coils；
Position of the electromagnetic hand-writing pen in the electromagnetic handwritten driving plate is calculated by three maximum coils of induced signal.
5. coordinate location method according to claim 4, it is characterised in that：When the electromagnetic hand-writing pen is in the display
During efficient frontier area, the electromagnetic hand-writing pen is calculated in the electricity by second coil and two first coils
Position in the hand-written driving plate of magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164067.9A CN107844225A (en) | 2017-11-21 | 2017-11-21 | Electromagnetic touch device and its coordinate location method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164067.9A CN107844225A (en) | 2017-11-21 | 2017-11-21 | Electromagnetic touch device and its coordinate location method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107844225A true CN107844225A (en) | 2018-03-27 |
Family
ID=61679942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711164067.9A Pending CN107844225A (en) | 2017-11-21 | 2017-11-21 | Electromagnetic touch device and its coordinate location method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107844225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108874255A (en) * | 2018-06-29 | 2018-11-23 | 上海天马微电子有限公司 | A kind of array substrate and display device |
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| CN102855049A (en) * | 2011-06-29 | 2013-01-02 | 汉王科技股份有限公司 | Electromagnetic touch control device and touch control locating method thereof |
| CN103577022A (en) * | 2012-07-31 | 2014-02-12 | 汉王科技股份有限公司 | Electromagnetic touch device and coordinate positioning method thereof |
| CN204009853U (en) * | 2014-07-01 | 2014-12-10 | 鸿合科技有限公司 | The coil array of narrow frame electromagnetic induction blank |
| CN104915083A (en) * | 2015-06-30 | 2015-09-16 | 上海天马微电子有限公司 | Touch screen and display apparatus |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200873A (en) * | 2010-03-25 | 2011-09-28 | 株式会社和冠 | Position detecting device, position input device, and sensor substrate |
| CN102760939A (en) * | 2011-04-25 | 2012-10-31 | 汉王科技股份有限公司 | Antenna plate, touchpad, electronic device and manufacturing method of antenna plate for touchpad |
| CN102855049A (en) * | 2011-06-29 | 2013-01-02 | 汉王科技股份有限公司 | Electromagnetic touch control device and touch control locating method thereof |
| CN103577022A (en) * | 2012-07-31 | 2014-02-12 | 汉王科技股份有限公司 | Electromagnetic touch device and coordinate positioning method thereof |
| CN204009853U (en) * | 2014-07-01 | 2014-12-10 | 鸿合科技有限公司 | The coil array of narrow frame electromagnetic induction blank |
| CN104915083A (en) * | 2015-06-30 | 2015-09-16 | 上海天马微电子有限公司 | Touch screen and display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108874255A (en) * | 2018-06-29 | 2018-11-23 | 上海天马微电子有限公司 | A kind of array substrate and display device |
| CN108874255B (en) * | 2018-06-29 | 2021-08-03 | 上海天马微电子有限公司 | Array substrate and display device |
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Application publication date: 20180327 |
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