CN102855049B - Electromagnetic touch-control device and touch-control localization method thereof - Google Patents
Electromagnetic touch-control device and touch-control localization method thereof Download PDFInfo
- Publication number
- CN102855049B CN102855049B CN201110179942.7A CN201110179942A CN102855049B CN 102855049 B CN102855049 B CN 102855049B CN 201110179942 A CN201110179942 A CN 201110179942A CN 102855049 B CN102855049 B CN 102855049B
- Authority
- CN
- China
- Prior art keywords
- touch
- signal
- coil
- electromagnetic
- time writer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Position Input By Displaying (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a kind of electromagnetic touch-control device and touch-control localization method thereof, belong to technical field of electromagnetic touch control.Electromagnetic touch-control device of the present invention comprises electromagnetic touch plate and time writer, electromagnetic touch plate comprises antenna plate and control panel, antenna plate comprises the coil on many group horizontal directions and vertical direction, control panel comprises: amplifier, its to coil-induced to time writer electromagnetic signal amplify, be amplified signal; Integrating circuit, it carries out integration to amplifying signal, obtains integrated signal; Processor, according to integrated signal, it judges whether the position of touch of time writer is positioned at the fringe region of antenna plate, when determining that position of touch is positioned at fringe region, utilize submarginal many groups coil-induced to integrated signal corresponding to electromagnetic signal obtain concrete position of touch.The present invention can accurately locate by edge position of touch, can be widely used in electromagnetic touch field.
Description
Technical field
The present invention relates to a kind of electromagnetic touch-control device and touch-control localization method thereof, belong to technical field of electromagnetic touch control.
Background technology
As a kind of important electronic product input technology, electromagnetic touch technology obtains increasing application.Electromagnetic touch-control device comprises electromagnetic touch plate and time writer, and electromagnetic touch plate can comprise again electromagnetic touch control panel, electromagnetic touch antenna plate.Electromagnetic touch control panel is called for short control panel, and electromagnetic touch antenna plate is called for short antenna plate.Antenna plate transmitting and receiving electromagnetic wave, or receive only the electromagnetic signal from time writer, and the electromagnetic signal received is passed to control panel, carry out signal transacting by control panel, finally obtain a series of information of time writer, as coordinate, inclination angle and pressure etc.
Different from condenser type and electric resistance touch-control technology, together with the electromagnetic touch plate in electromagnetic touch technology and time writer do not need to be in direct contact with, and just can be worked by electromagnetic wave, and positioning precision is high, can produce pressure sensitivity etc.Any electrical insulator can be placed between the Trackpad of electromagnetic touch technology and time writer, and affect touch-control effect hardly.Therefore, the range of application of electromagnetic touch technology widely, can be used for electromagnetism plotting sheet and the fields such as screen of drawing.
But, in the prior art, when the position of touch of time writer is positioned at the fringe region outside antenna plate outer boundary, accurately cannot locate time writer.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of electromagnetic touch-control device and touch-control localization method thereof.
Electromagnetic touch-control device of the present invention comprises electromagnetic touch plate and time writer, electromagnetic touch plate comprises antenna plate and control panel, antenna plate comprises the coil on many group horizontal directions and vertical direction, control panel comprises: amplifier, its to coil-induced to time writer electromagnetic signal amplify, be amplified signal; Integrating circuit, it carries out integration to amplifying signal, obtains integrated signal; And processor, according to integrated signal, it judges whether the position of touch of time writer is positioned at the fringe region of antenna plate, when determining that position of touch is positioned at fringe region, utilize submarginal many groups coil-induced to integrated signal corresponding to electromagnetic signal obtain concrete position of touch.
In the touch-control localization method of electromagnetic touch-control device of the present invention, electromagnetic touch-control device comprises electromagnetic touch plate and time writer, electromagnetic touch plate comprises antenna plate and control panel, antenna plate comprises the coil on many group horizontal directions and vertical direction, control panel comprises amplifier, integrating circuit and processor, touch-control localization method comprises: signal amplification procedure, amplifier to coil-induced to time writer electromagnetic signal amplify, be amplified signal; Signal integration step, integrating circuit carries out integration to amplifying signal, obtains integrated signal; Touch area determining step, according to integrated signal, processor judges whether the position of touch of time writer is positioned at the fringe region of antenna plate; And the concrete position of touch determining step of fringe region, when determining that position of touch is positioned at fringe region in the determining step of touch area, processor utilize submarginal many groups coil-induced to integrated signal corresponding to electromagnetic signal obtain concrete position of touch.
Electromagnetic touch-control device of the present invention and touch-control localization method thereof, determined by touch area judgement and the concrete position of touch of fringe region, during fringe region inside and outside the outer boundary making the position of touch when time writer be positioned at electromagnetic touch antenna plate, still accurately can locate time writer.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of electromagnetic touch-control device of the present invention.
Fig. 2 is the structural representation of an embodiment of control panel in electromagnetic touch-control device of the present invention.
Fig. 3 is the structural representation of an embodiment of antenna plate in electromagnetic touch-control device of the present invention.
Fig. 4 is the schematic diagram of an embodiment of the position relationship showing module and antenna plate in electromagnetic touch-control device of the present invention.
Fig. 5 is the process flow diagram of an embodiment of the touch-control localization method of electromagnetic touch-control device of the present invention.
Fig. 6 is the partial schematic diagram of the example that the coil of antenna plate in electromagnetic touch-control device of the present invention is arranged.
Fig. 7 is the schematic diagram of an example of the integrated signal produced after the adjacent three groups of coil-induced time writer signal integrations of the non-edge of antenna plate in electromagnetic touch-control device of the present invention.
Fig. 8 is the schematic diagram of an example of the integrated signal produced after the coil-induced time writer signal integration of the fringe region two adjacent groups of antenna plate in electromagnetic touch-control device of the present invention.
Fig. 9 is the schematic diagram of an example of the integrated signal produced after the adjacent five groups of coil-induced time writer signal integrations of the fringe region of antenna plate in electromagnetic touch-control device of the present invention.
Figure 10 is the schematic diagram of an example of the integrated signal produced after the adjacent five groups of coil-induced time writer signal integrations of the fringe region of antenna plate in electromagnetic touch-control device of the present invention.
Embodiment
Below, the specific embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the structural representation of an embodiment of electromagnetic touch-control device of the present invention.
As shown in Figure 1, the electromagnetic touch-control device of present embodiment comprises electromagnetic touch plate and time writer 1, electromagnetic touch plate comprises antenna plate 2 and control panel 5, and antenna plate 2 comprises the coil on many group horizontal directions and vertical direction, and control panel 5 comprises amplifier 51, integrating circuit 52 and processor 54.Amplifier 51 to coil-induced to time writer 1 launch electromagnetic signal amplify, be amplified signal.Integrating circuit 52 pairs of amplifying signals carry out integration, obtain integrated signal.According to integrated signal, processor 54 judges whether the position of touch of time writer 1 is positioned at the fringe region of antenna plate 2.When in the integrated signal that processor 54 obtains, when the integrated signal of maximal value is the time writer signal from obtaining in edge coil, then time writer arrives fringe region, and when time writer moves, the integration amplitude regularity of edge coil diminishes and the integration amplitude of time writer signal that secondary edge coil closing on edge coil obtains also is diminishing, and this explanation time writer is moving to edge direction.When determining that position of touch is positioned at fringe region, processor 54 utilize submarginal many groups coil-induced to integrated signal corresponding to electromagnetic signal obtain concrete position of touch.
The electromagnetic touch-control device of present embodiment to judge touch area and processor 54 that the concrete position of touch in edge region is determined by arranging, during fringe region near the outer boundary making the position of touch when time writer 1 be positioned at antenna plate wiring region, still accurately can locate time writer 1.
Fig. 2 is the structural representation of an embodiment of control panel in electromagnetic touch-control device of the present invention.
As shown in Figure 2, control panel 5 except comprising amplifier 51, integrating circuit 52, and outside processor 54, also comprise analog to digital converter 56 and auxiliary signal treatment circuit 57.Analog to digital converter 56 converts the integrated signal that integrating circuit 52 exports to digital signal, exports to processor 54, the integrated signal of auxiliary signal treatment circuit 57 to input comprise anti-phase process and/or with or the process that processes.
In addition, control panel can also comprise unshowned automatic gain control circuit in Fig. 2, filtering circuit.The signal intensity of automatic gain control circuit to input controls, regulates.Filtering circuit filtering outside electromagnetic interference.Automatic gain control circuit, filtering circuit, auxiliary signal treatment circuit 57 can adjust as required with the position relationship of amplifier 51, integrating circuit 52.
Fig. 3 is the structural representation of an embodiment of antenna plate in electromagnetic touch-control device of the present invention.
As shown in Figure 3, antenna plate 2 can be divided into wiring region 21 and effective district 22, and wiring region 21 is regions that aerial coil regularity is gathered, and antenna plate 2 removes outside structural periphery, and remainder is exactly wiring region 21.Effective district 22 is regions that whole antenna plate 2 pairs of time writers 1 produce induction.
In the prior art, time writer 1 is only just effective during action in effective district 22, only could determine the concrete position of touch of time writer 1 in effective district, and, effective district 22 is less than wiring region 21, in the wiring region outside effective district 22, can not determine the concrete position of touch of time writer 1.But in the present embodiment, by arranging judging touch area and processor 54 that the concrete position of touch in edge region is determined shown in Fig. 1, can by outside the effective action area extension of time writer 1 to effective district 22, that is, the concrete position of touch of time writer 1 also can accurately be determined in wiring region outside effective district 22, even outside wiring region 21.
Fig. 4 is the schematic diagram of an embodiment of the position relationship showing module and antenna plate in electromagnetic touch-control device of the present invention.
As shown in Figure 4, electromagnetic touch plate also comprises the display module 3 be positioned at above antenna plate 2.Because need to be provided with metal edge frame 4, so when antenna plate is directly placed on the below of display module 3, the viewing area (that is, the A-A district shown in Fig. 4) of display module 3 is greater than antenna plate 2.
In the prior art, time writer 1 carries out effective district 22 of touch-control because be less than wiring region 21, so be necessarily less than the viewing area A-A of display module 3, therefore, if time writer, when the viewing area A-A showing module 3 operates, can not determine the concrete position of touch of time writer in marginal portion.But in the present embodiment, by arranging judging touch area and processor 54 that the concrete position of touch in edge region is determined shown in Fig. 1, can by the effective action area extension of time writer 1 to whole viewing area A-A.
Preferably, showing module 3 is liquid crystal display module.Specifically, liquid crystal display module can comprise liquid crystal panel and back light system thereof and plastic cement or metal or plastic metal mixed organization drain pan.
Fig. 5 is the process flow diagram of an embodiment of the touch-control localization method of electromagnetic touch-control device of the present invention.
As shown in Figure 5, the touch-control localization method of the electromagnetic touch-control device of present embodiment comprises signal amplification procedure S1, signal integration step S2, touch area determining step S3 and the concrete position of touch determining step S5 of fringe region.In signal amplification procedure S1, amplifier 51 to coil-induced to time writer 1 launch electromagnetic signal amplify, be amplified signal.In signal integration step S2, integrating circuit 52 pairs of amplifying signals carry out integration, obtain integrated signal.In the determining step S3 of touch area, according to the size of integrated signal, processor 54 judges whether the position of touch of time writer 1 is positioned at the fringe region of antenna plate 2.When determining that position of touch is positioned at fringe region in the determining step S3 of touch area, in the concrete position of touch determining step S5 of edge region, processor 54 utilize submarginal many groups coil-induced to integrated signal corresponding to electromagnetic signal obtain concrete position of touch.
Preferably, above-mentioned control method can also comprise signal ancillary process steps S4 after the determining step of described touch area, at signal ancillary process steps S4, by auxiliary signal treatment circuit 57, the integrated signal from integrating circuit 52 is carried out to the anti-phase process of signal, also comprise other signal transacting, as filtering, with or etc.
Preferably, by analog to digital converter 56, integrated signal is converted to digital signal, obtains the size of the integrated signal in the concrete position of touch determining step S5 of fringe region.
Below, composition graphs 6-Figure 10 illustrates an example of the touch positioner of the electromagnetic touch-control device of present embodiment.
Fig. 6 is the partial schematic diagram of the example that the coil of antenna plate in electromagnetic touch-control device of the present invention is arranged.
As shown in Figure 6, its wiring rule is: repeat once every 3 groups.Certainly, also can repeat once every 4 groups or repeat once every n group.For convenience of explanation, to repeat once every 3 groups, m coil is the coil at most edge.In this example, coil-span is not limited equidistant.
For convenience of description, below only for the defining method of the Y-direction of position of touch (that is, longitudinally) coordinate, X-direction (that is, laterally) coordinate can be determined according to same method.The signal that time writer 1 is launched, by after at least two Coil Detector of Y-direction arrive in antenna plate 2, through amplification, integration etc., can obtain a series of regular integrated waveform.
In the non-edge in effective district, can calculate according to the integration of the adjacent three groups of time writer that active coil senses 1 signals, to obtain the accurate location information of time writer 1.Such as, the position of touch of time writer 1 is arranged in the position 1 of Fig. 6, can position with m coil, m+1 coil and the position of touch of m+2 coil to time writer 1.At this moment, by asking for quadratic equation Y=ax
2x value during the Y maximal value of+bx+c, can obtain the particular location of time writer.In quadratic equation, coordinate figure and the integration amplitude of three adjacent windings are known, like this, just can obtain a, b, the c in quadratic equation, and then try to achieve when integration amplitude y is maximum, and the value of x is the definite coordinate figure of time writer.
But, in marginal portion, then need two of marginal portion active coils to position, carry out polygometry by y=ax+b and approximate location is carried out to time writer.The integrated signal homophase obtained after now requiring two of marginal portion active coils to carry out integration to the signal of time writer 1.Such as, the position of touch position 2 in figure 6 of time writer 1, can only position with m coil and m+1 coil.
But, once two, edge coil is to the integration not homophase of time writer 1 signal, be then difficult to utilize prior art accurately to locate position of touch.Such as, time writer 1 position 3 in figure 6 or position 4, m coil and m+1 coil, to the different phase time of its integrated signal, will determine time writer contact controlled position really.
Fig. 7 is the schematic diagram of an example of the integrated signal produced after the adjacent three groups of coil-induced time writer signal integrations of the non-edge of antenna plate in electromagnetic touch-control device of the present invention.
If in antenna plate 2 adjacent three coil-induced to time writer signal after signal amplification procedure S1, signal ancillary process steps S2, signal integration step S3, obtain as shown in Figure 7 waveform, then in the determining step S4 of touch area, judge the non-edge of time writer 1 in antenna plate 2.Afterwards, utilize quadratic equation localization method of the prior art, the actual position of touch of the integrated waveform determination time writer 1 that the time writer signal received from coil 2 ~ 4 obtains after treatment.
Fig. 8 is the schematic diagram of an example of the integrated signal produced after the coil-induced time writer signal integration of the fringe region two adjacent groups of antenna plate in electromagnetic touch-control device of the present invention.
If five groups in antenna plate 2 coil-induced to time writer signal after signal amplification procedure S1, signal ancillary process steps S2, signal integration step S3, obtain as shown in Figure 8 waveform, then in the determining step S4 of touch area, judge time writer 1 close to but be not yet positioned at the fringe region of antenna plate 2.Wherein, be all the integrated signal that the waveform 1 of positive phase and waveform 2 represent the time writer signal that most edge coil and the secondary edge coil that is close to it sense respectively, phase place is the integrated signal that negative waveform 3 ~ 5 represents the coil-induced time writer signal that arrive adjacent with time edge coil.After the determining step S4 of touch area, utilize broken line localization method of the prior art, the actual position of touch of the integrated signal determination time writer 1 represented by waveform 1 and 2.
Fig. 9 is the schematic diagram of an example of the integrated signal produced after the adjacent five groups of coil-induced time writer signal integrations of the fringe region of antenna plate in electromagnetic touch-control device of the present invention.
If five groups in antenna plate 2 coil-induced to time writer signal after signal amplification procedure S1, signal ancillary process steps S2, signal integration step S3, obtain as shown in Figure 9 waveform, then in the determining step S4 of touch area, judge that the position of touch of time writer 1 is positioned at the fringe region of antenna plate 2.Wherein, the waveform 1 of positive phase represents the integrated signal of the time writer signal that most edge coil senses, phase place be zero waveform 2 represent the integrated signal of the time writer signal that secondary edge coil that be close to most edge coil senses, phase place is the integrated signal that negative waveform 3 ~ 5 represents the coil-induced time writer signal that arrive adjacent with secondary edge coil.Because judge that the position of touch of time writer 1 is positioned at the fringe region of antenna plate 2 in the determining step S4 of touch area, so carry out the concrete position of touch determining step S5 of fringe region subsequently.
Figure 10 is the schematic diagram of an example of the integrated signal produced after the adjacent five groups of coil-induced time writer signal integrations of the fringe region of antenna plate in electromagnetic touch-control device of the present invention.
If five groups in antenna plate 2 coil-induced to time writer signal after signal amplification procedure S1, signal ancillary process steps S2, signal integration step S3, obtain as shown in Figure 10 waveform, then in the determining step S4 of touch area, judge that the position of touch of time writer 1 is positioned at the fringe region of antenna plate 2.Wherein, the waveform 1 of positive phase represents the integrated signal of the time writer signal that most edge coil senses, phase place is the integrated signal that negative waveform 2 represents the time writer signal that secondary edge coil that be close to most edge coil senses, phase place is the integrated signal that negative waveform 3 ~ 5 represents the coil-induced time writer signal that arrive adjacent with secondary edge coil.Because judge that the position of touch of time writer 1 is positioned at the fringe region of antenna plate 2 in the determining step S4 of touch area, so carry out the concrete position of touch determining step S5 of fringe region subsequently.
Shown in Fig. 9 and Figure 10 when, when the integrated signal determining the induction of most edge coil is maximum, adopt the integrated signal of the three groups of coils being jointly the closest time edge coil that three anti-phase waveforms 3 ~ 5 represent, by auxiliary signal treatment circuit 57, the integrated signal of these three waveforms 3 ~ 5 being carried out anti-phase process, obtaining anti-phase integrated value in the hope of getting coordinate figure during positive extreme value.In the concrete position of touch determining step S5 of edge region, with the position coordinates of the coordinate figure during positive extreme value asked for closest to three groups of coils of time edge coil jointly represented for anti-phase three waveforms 3 ~ 5 for argument value, be dependent variable value with the size of the anti-phase integrated signal 3 ~ 5 obtained by analog to digital converter, determine a quafric curve, when the dependent variable of this quafric curve gets maximal value, argument value is the coordinate of concrete position of touch.Wherein, analog to digital conversion can be carried out to the integrated signal that anti-phase waveform 3 ~ 5 represents, using the digital signal obtained as the size of integrated signal, carry out the determination of quafric curve and the determination of concrete position of touch.Herein, the adjacent anti-phase waveform of utilization can be that other are multiple.Coordinate figure when asking for positive extreme value by anti-phase integrated value, this method smoothly can must obtain the coordinate figure of time writer outside edge even edge, overcome conventional edge polygometry and ask for coordinate time, the slight broken line caused because of algorithm conversion and the problem of poor linearity.
Claims (7)
1. an electromagnetic touch-control device, it is characterized in that, comprise electromagnetic touch plate and time writer, described electromagnetic touch plate comprises antenna plate, control panel and is positioned at the display module above described antenna plate, described antenna plate comprises the coil on many group horizontal directions and vertical direction, the viewing area of described display module is greater than the coil windings region of described antenna plate, and described control panel comprises:
Amplifier, its to described coil-induced to time writer electromagnetic signal amplify, be amplified signal;
Integrating circuit, it carries out integration to described amplifying signal, obtains integrated signal;
Processor, according to described integrated signal, it judges whether the position of touch of described time writer is positioned at the fringe region of described antenna plate, specifically comprise: in described integrated signal after integrating circuit integration, the integrated signal of maximal value is the time writer signal that the coil at most edge obtains, and when time writer moves, the integration amplitude regularity of edge coil diminishes and the integration amplitude of closing on the time writer signal of secondary edge coil acquisition of edge coil is also diminishing, judge that time writer is moving to edge direction and then judging that the position of touch of time writer is positioned at the fringe region of described antenna plate accordingly, when determining that described position of touch is positioned at described fringe region, utilize submarginal many groups coil-induced to integrated signal corresponding to electromagnetic signal obtain concrete position of touch.
2. electromagnetic touch-control device according to claim 1, is characterized in that, described control panel also comprises analog to digital converter, and it converts described integrated signal to digital signal, exports to described processor.
3. electromagnetic touch-control device according to claim 1, is characterized in that, described control panel also comprises:
Auxiliary signal treatment circuit, its to the signal of input comprise anti-phase process and/or with or the process that processes.
4. electromagnetic touch-control device according to claim 1, is characterized in that, described display module is liquid crystal display module.
5. the touch-control localization method of an electromagnetic touch-control device, it is characterized in that, described electromagnetic touch-control device comprises electromagnetic touch plate and time writer, described electromagnetic touch plate comprises antenna plate, control panel and is positioned at the display module above described antenna plate, described antenna plate comprises the coil on many group horizontal directions and vertical direction, described control panel comprises amplifier, integrating circuit and processor, and the viewing area of described display module is greater than the coil windings region of described antenna plate; Described method comprises:
Signal amplification procedure, described amplifier to described coil-induced to time writer electromagnetic signal amplify, be amplified signal;
Signal integration step, described integrating circuit carries out integration to described amplifying signal, obtains integrated signal;
Touch area determining step, according to described integrated signal, described processor judges whether the position of touch of described time writer is positioned at the fringe region of described antenna plate, specifically comprise: in described integrated signal after integrating circuit integration, the integrated signal of maximal value is the time writer signal that the coil at most edge obtains, and when time writer moves, the integration amplitude regularity of edge coil diminishes and the integration amplitude of closing on the time writer signal of secondary edge coil acquisition of edge coil is also diminishing, judge that time writer is moving to edge direction and then judging that the position of touch of time writer is positioned at the fringe region of described antenna plate accordingly, and
The concrete position of touch determining step of fringe region, when determining that described position of touch is positioned at described fringe region in the determining step of described touch area, described processor utilize submarginal many groups coil-induced to described integrated signal corresponding to electromagnetic signal obtain concrete position of touch.
6. the touch-control localization method of electromagnetic touch-control device according to claim 5, it is characterized in that, also comprise after the determining step of described touch area: by auxiliary signal treatment circuit to submarginal many groups coil-induced to described integrated signal corresponding to electromagnetic signal carry out anti-phase process and/or with or the position coordinates that processes to obtain integrated signal.
7. the touch-control localization method of electromagnetic touch-control device according to claim 5, it is characterized in that, also comprise after the determining step of described touch area: by described analog to digital converter, described integrated signal is converted to digital signal, obtain the size of integrated signal described in the concrete position of touch determining step of described fringe region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110179942.7A CN102855049B (en) | 2011-06-29 | 2011-06-29 | Electromagnetic touch-control device and touch-control localization method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110179942.7A CN102855049B (en) | 2011-06-29 | 2011-06-29 | Electromagnetic touch-control device and touch-control localization method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102855049A CN102855049A (en) | 2013-01-02 |
| CN102855049B true CN102855049B (en) | 2015-08-26 |
Family
ID=47401678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110179942.7A Active CN102855049B (en) | 2011-06-29 | 2011-06-29 | Electromagnetic touch-control device and touch-control localization method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102855049B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI471783B (en) * | 2013-01-30 | 2015-02-01 | Kye Systems Corp | Touch panel and touch apparatus |
| CN107844225A (en) * | 2017-11-21 | 2018-03-27 | 深圳市绘王动漫科技有限公司 | Electromagnetic touch device and its coordinate location method |
| CN109240518B (en) * | 2018-08-16 | 2020-11-20 | 汉王科技股份有限公司 | Noise processing method and device of electromagnetic handwriting equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6184864B1 (en) * | 1998-05-07 | 2001-02-06 | Aiptek International Inc. | Digitizer tablet apparatus with edge area as a macro cell |
| CN1453741A (en) * | 2002-04-22 | 2003-11-05 | 北京汉王科技有限公司 | Wireless passive hand-writing board for computer log-in |
| CN101901094A (en) * | 2010-07-16 | 2010-12-01 | 友碁科技股份有限公司 | Liquid-crystal handwriting screen and method for improving linearity of ambient antenna thereof |
-
2011
- 2011-06-29 CN CN201110179942.7A patent/CN102855049B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6184864B1 (en) * | 1998-05-07 | 2001-02-06 | Aiptek International Inc. | Digitizer tablet apparatus with edge area as a macro cell |
| CN1453741A (en) * | 2002-04-22 | 2003-11-05 | 北京汉王科技有限公司 | Wireless passive hand-writing board for computer log-in |
| CN101901094A (en) * | 2010-07-16 | 2010-12-01 | 友碁科技股份有限公司 | Liquid-crystal handwriting screen and method for improving linearity of ambient antenna thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102855049A (en) | 2013-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103926474B (en) | Phased array antenna unit characteristic near-field measurement method | |
| CN102855049B (en) | Electromagnetic touch-control device and touch-control localization method thereof | |
| CN103513244B (en) | A kind of multi-frame phase coherence accumulation target tracking-before-detecting method based on dynamic programming | |
| CN102045838B (en) | Method and equipment for measurement positioning by observing arrival time difference | |
| TWI653559B (en) | Touch processing device, method and electronic system | |
| CN102819008A (en) | Non-cooperative radar radiation source positioning method based on nonlinear least squares | |
| CN107607924B (en) | Signal processing method for static clutter interference elimination of FMCW radar | |
| CN103577022A (en) | Electromagnetic touch device and coordinate positioning method thereof | |
| EP2713250A1 (en) | Electromagnetic induction position detection sensor | |
| CN103399030B (en) | A kind of system and method for realizing answer signal phase difference detection under blank pipe 3/A pattern | |
| CN110837079B (en) | Target detection method and device based on radar | |
| CN102419648B (en) | Touch point coordinate acquiring method and system and touch screen calibrating method and system | |
| CN104020465B (en) | External illuminators-based radar angle-measuring method based on eight unit small-bore circle array antennas | |
| US10345474B2 (en) | Anti-saturation device and method for ground magnetic resonance signal amplifying circuit | |
| CN106371663B (en) | Method and device for adjusting time gain compensation based on touch screen | |
| CN108037339A (en) | The control method that a kind of digital oscilloscope is set automatically | |
| CN112986729A (en) | Radiation stray detection method, detection device and readable storage medium | |
| CN111175834A (en) | Towed transient electromagnetic detection device and method based on whole-process acquisition technology | |
| CN105865318A (en) | Non-phase-sensitive digital demodulation system and method applied to LVDT displacement sensor | |
| US8781789B2 (en) | Method for determining incline angle of electromagnetic pointer | |
| KR20200006673A (en) | Method and device for extracting motion position by applying weights during beam scanning analysis | |
| CN102297900B (en) | Multichannel parallel and synchronous acquisition method for ultrasonic pulse signal | |
| CN112835025B (en) | Target speed ambiguity resolution method and device based on radar detection and terminal equipment | |
| CN106556749A (en) | For the measurement apparatus and measuring method of systematic error detection | |
| JP2007006112A (en) | Electric field intensity calculation apparatus, electric field intensity calculation method, and electric field intensity calculation program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161117 Address after: 100193 Beijing, Haidian District, northeast Wang West Road, building 3, floor 363, room 5, room 8 Patentee after: BEIJING HANVON PENGTAI TECHNOLOGY CO., LTD. Address before: 100193 Beijing, Haidian District, northeast Wang West Road, building three, floor 5, layer 8 Patentee before: Hanwang Tech Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100193 363, 3 floor, 5 building, 8 Northeast Road, Haidian District, Beijing. Patentee after: Beijing Hanvon Peng Thai Polytron Technologies Inc Address before: 100193 363, 3 floor, 5 building, 8 Northeast Road, Haidian District, Beijing. Patentee before: BEIJING HANVON PENGTAI TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |