CN103941891B - Capacitance pen, capacitance touching control method and capacitance touch-control device - Google Patents
Capacitance pen, capacitance touching control method and capacitance touch-control device Download PDFInfo
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- CN103941891B CN103941891B CN201410176118.XA CN201410176118A CN103941891B CN 103941891 B CN103941891 B CN 103941891B CN 201410176118 A CN201410176118 A CN 201410176118A CN 103941891 B CN103941891 B CN 103941891B
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Abstract
One aspect of the present invention provides a kind of capacitance pen (100), and for being operated on capacitance touching control panel (200), it includes：Control process unit (1), it generates the measurement signal of corresponding sequence according to the communication protocol of setting, positioning signal that the measurement signal includes being used for determining the capacitance pen position, represents to start the initial signal and data-signal for obtaining the capacitance pen (100) data message that send data message；With transmitting element (2), it, which is used to send the measurement signal to the capacitance touching control panel (200), makes the capacitive touch panel (200) determine the positioning signal, initial signal and data-signal according to the communication protocol of setting, and then according to the positioning signal and the touch information of the data-signal acquisition capacitance pen (100).
Description
Technical field
The present invention relates to capacitance touching control technology, more particularly to a kind of capacitance pen, capacitance touching control method and capacitance touch-control device.
Background technology
At present, because capacitance touch screen is easy to operate, and sensitivity is higher, it has also become the first choice of touch control device at this stage.Electricity
It is usually the ITO (tin indium oxide) that electrically conducting transparent is made in glass or other transparent materials to hold capacitance plate used in touch-screen
Film is to form the conducting film of crisscross structure, and these conducting films can be used as sender electrode and induction electrode.When finger point
Screen is hit, coupled capacitor can be respectively formed with sender electrode and induction electrode, portion of electrical current is absorbed from contact point, so as to cause sense
The signal of electrode is answered to change.That is, capacitive touch screen is when conductor is touched with it, the change of the electric field formed by conducting film
Change touch location of the detection conductor on capacitance plate, realize human-computer interaction function.
The operation of current capacitance plate is general to be carried out by finger or capacitance pen, and the capacitance pen nib typically used except
Need to meet in addition to conductive characteristic, it is necessary to very thick, such as the face contacted with capacitance plate is usually the disc that diameter reaches 5mm, this
It is because if the fine point operation of capacitor screen being made of conductive material, although nib can also absorb part electricity from contact point
Stream, but because nib is very thin, absorb influence very little of the electric current to induction electrode, it is difficult to detect so that capacitive touch screen can not
Determine touch location, and nib it is thicker when to absorb influence of the electric current to induction electrode larger so that capacitive touch screen is easy to
Determine touch location.
Certainly, there is also the thinner capacitance pen of nib, during using this capacitance pen, capacitive touch screen and electricity in the market
The mode for holding pen interaction is typically that capacitive touch screen sends order, and capacitance pen, which is received, carries out corresponding operating after order.However, very
In the case of many, because capacitive touch screen has the demand of low-power consumption, the signal that it sends is very weak, so that capacitance pen receives signal
It is highly difficult, and then influence the interaction of capacitance pen and capacitive touch screen.
The content of the invention
The present invention is in view of problem above is sent to capacitance touching control panel by capacitance pen and measured there is provided a kind of capacitance pen
Signal come realize capacitance touching control panel to the positioning of capacitance pen and obtain capacitance pen key information and pressure sensitivity information, due to being
Capacitance pen sends signal to capacitance touching control panel, thus is not influenceed by capacitance touching control panel signal intensity, with good friendship
Mutually experience.
One aspect of the present invention provides a kind of capacitance pen (100), for being grasped on capacitance touching control panel (200)
Make, it includes：Control process unit (1), it generates the measurement signal of corresponding sequence, the measurement according to the communication protocol of setting
Signal starts to send the initial signal of data message and is used for including the positioning signal for determining the capacitance pen position, expression
Obtain the data-signal of the capacitance pen (100) data message；With transmitting element (2), it is used to send the measurement signal
The capacitive touch panel (200) is set to determine that the positioning is believed according to the communication protocol of setting to the capacitance touching control panel (200)
Number, initial signal and data-signal, and then obtain according to the positioning signal and data-signal the touch-control of the capacitance pen (100)
Information.
Another aspect of the present invention provides a kind of capacitance touching control method, for realizing capacitance pen (100) and capacitance touching control panel
(200) interactive operation, it includes：The measurement that the capacitance pen (100) sends corresponding sequence according to the communication protocol of setting is believed
Number the step of；The measurement signal is scanned with the capacitance touching control panel (200), and according to the parsing of the communication protocol of setting
Measurement signal, the step of obtaining the touch information of the capacitance pen (100), wherein the measurement signal is including described for determining
The positioning signal of capacitance pen position, expression start to send the initial signal of data message and for obtaining the capacitance pen (100)
The data-signal of data message, the capacitance touching control panel determines that the positioning signal, starting are believed according to the communication protocol of setting
Number and data-signal, and then obtain according to the positioning signal and data-signal the touch information of the capacitance pen (100).
Another aspect of the present invention provides a kind of capacitance touch-control device, and it includes：Capacitance pen (100), and capacitance touching control face
Plate (200), wherein
The capacitance pen (100) includes control process unit (1), and it generates corresponding sequence according to the communication protocol of setting
Measurement signal, the measurement signal is including being used to determine the positioning signal of the capacitance pen position, representing to start to send data letter
The initial signal of breath and the data-signal for obtaining the capacitance pen (100) data message；With transmitting element (2), it is used for
The measurement signal is sent to the capacitance touching control panel (200),
The capacitance touching control panel (200) includes induction electrode (201,202), and it receives described by capacitive coupling
The measurement signal that the transmitting element (2) of capacitance pen (100) is sent, detecting signal unit (203), its according to setting communication protocol
Detection is scanned to the signal that the induction electrode (201,202) is received, signal processing unit (204), it is according to the letter
The testing result of number detection unit (203), determines the positioning signal, initial signal and data-signal, and then according to described fixed
Position signal and data-signal obtain the touch information of the capacitance pen (100).
The present invention provides capacitance pen 100, capacitance touching control method, in capacitance touch-control device, by capacitance pen 100 to capacitive touch
Control panel 200 send measurement signal come realize capacitance touching control panel 200 to the positioning of capacitance pen 100 and obtain capacitance pen by
Key information and pressure sensitivity information, due to capacitance touching control panel 200 need to be according to measurement signal only can determine that capacitance pen 100 position,
Pressure and key information, are determined without touching the change electric capacity of itself of capacitance touching control panel 200 by capacitance pen or finger
Touch location, thus the nib of capacitance pen 200 can be made very thin, such as diameter is less than 3mm, thus is highly convenient for writing.Also,
Because in whole interaction, either capacitance pen 100 sends measurement signal or capacitance touching control panel 200 receives measurement letter
Number obtain touch information, all without capacitance touching control panel 200 send signal, thus the present invention capacitance pen 100 will not be by electric capacity
The influence of the signal intensity of contact panel 200, with good interactive experience.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of contactor control device of the present invention；
Fig. 2 is the structural representation of capacitance pen 100；
Fig. 3 is the structural representation of capacitance touching control panel 200；
Fig. 4 is the positioning schematic of contactor control device 300；
Fig. 5 is the schematic diagram for the measurement signal for representing one embodiment of the present invention；
Fig. 6 is the schematic diagram for representing the scanning window of capacitance touching control panel 200 of the present invention；
Fig. 7 is the workflow schematic diagram of one embodiment of the present invention capacitance touching control panel 200；
Fig. 8 is the schematic diagram for the measurement signal for representing another embodiment of the invention.
Embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Capacitance pen, capacitance touching control method and the capacitance touch-control device that formula is provided the present invention are described in detail.In the drawings, it is right
In inscape identically or comparably, identical label is marked.It is only capacitance pen, capacitance touching control method and the electricity of the present invention below
Hold the preferred forms of contactor control device, the present invention is not limited in following structures.
Fig. 1 is the structural representation of one embodiment of contactor control device of the present invention.As shown in figure 1, present embodiment is tactile
Controlling device 300 includes capacitance pen 100 and capacitance touching control panel 200.Wherein, capacitance pen 100 according to the communication protocol of setting to electricity
Hold the measurement signal that contact panel 200 sends corresponding sequence, such as square-wave signal, capacitance touching control panel 200 receives measurement letter
Number, and according to communication protocol and the touch information of measurement signal acquisition capacitance pen 100, such as obtain position, the pen of capacitance pen
The information such as sharp pressure, button.
Fig. 2 is the structural representation of capacitance pen 100.
As Fig. 2 shows, capacitance pen 100 includes control process unit 1, transmitting element 2, switch 3, pressure measurement cell 4, boosting
Unit 5, button 6, indicator lamp 7, power supply 8, cradle 9 and housing 10.
In the present embodiment, control process unit 1 generates the measurement of corresponding sequence according to the communication protocol according to setting
Signal, and capacitance touching control panel 200 is sent it to by transmitting element 2, so that capacitance touching control panel 200 obtains capacitance pen
100 touch information.Specifically, control process unit 1 can select micro energy lose controller, the serial cores of MSP430 of such as TI companies
Piece.
Transmitting element 2 is the less electric conductivity nib of diameter, and transmitting element 2 stretches out from the written position 2 ' of housing 10.When
When capacitance pen 100 is located at the touch area of capacitance touching control panel 200, the induced electricity that transmitting element 2 can be with capacitance touching control panel 200
Pole forms coupled capacitor, so that the measurement signal that control process unit is generated.Alternatively it is also possible to by nib 2 and nib 2 '
All made of metal, collectively serve as transmitting element to send measurement signal, so as to increase the intensity for sending signal.In this implementation
In mode, as transmitting element 2 nib diameter be less than 3mm, its top can wrap up relatively soft material (such as rubber) with
Improve the comfort level of writing.
In the present embodiment, due to capacitance pen 100 transmitting element 2 area very little, so and capacitance touching control panel
Coupled capacitor very little between 200 induction electrode, receives and detects measurement signal for the ease of capacitance touching control panel 200, control
The measurement signal that processing unit 1 processed is generated can boost by boosting unit 5, so as to be converted to high-voltage signal, add measurement letter
Number intensity, the high-voltage signal after conversion sent to capacitance touching control panel 200 by transmitting element 2.Because capacitance pen 100 is to electricity
Hold the transmission of contact panel 200 is high-voltage signal, thus enhances the intensity that capacitance touching control panel 200 receives signal, improves letter
Make an uproar than and positioning precision.
Switch element 3 is connected with control process unit 1, and control process unit 1 controls to measure according to the state of switch element 3
The transmission of signal.That is, when switch element 3 is closed, control process unit 1 generates the measurement signal, and passes through transmitting element 2
Send.When switch element 3 disconnects, control process unit 1 does not generate the measurement signal then, and transmitting element 2 also will not be to electricity
Hold contact panel 200 and send measurement signal.The working condition of capacitance pen 100 is controlled by switch element 3, when without using electric capacity
Then closed during pen 100 by disconnecting switch element 3, so as to reduce the consumption of battery electric quantity, extend service time of battery.
Pressure measurement cell 4 is used for the pressure for measuring the nib of capacitance pen 100, and testing result is sent to control process list
Member 1, control process unit 1 obtains the pen point pressure of capacitance pen 100 according to the testing result of pressure measurement cell 4, and by pressure
Information coding is sent in measurement signal to capacitance touching control panel.Pressure measurement cell 4 can select various suitable pressure sensings
Device, such as resistive pressure sensor or capacitance pressure transducer,.
Alternatively, in the present embodiment, control process unit 1 can also be according to the testing result control of pressure measurement cell 4
The transmission of measurement signal processed.Specifically, when pressure sensing cell detects pressure, then control process unit 1 generates the survey
Signal is measured, and is sent by transmitting element 2.When pressure sensing cell does not detect pressure, control process unit 1 is not given birth to then
Into the measurement signal, transmitting element 2 also will not send measurement signal to capacitance touching control panel 200.It just can so pass through pressure
The testing result of detection unit 4 controls the working condition of capacitance pen 100, when not detecting pressure does not then generate and sends out
Measurement signal is sent, so as to reduce the consumption of battery electric quantity, extends service time of battery.
Alternatively, button 6 is used to define various functions, and it is connected with control process unit 1, and control process unit 1 will be by
Key information is encoded in measurement signal, and sends it to capacitance touching control panel.
The capacitance pen 100 of present embodiment also includes indicator lamp 7, and indicator lamp 7 is connected with control process unit 1, for referring to
Show the working condition of capacitance pen 100, the working condition of capacitance pen 100 is one can readily appreciate that by the user of indicator lamp 7, such as
Indicator lamp 7 grows bright or flicker and represents that capacitance pen 100 is in running order, and indicator lamp 7, which extinguishes, represents that capacitance pen 100 does not send survey
Measure signal.Indicator lamp 7 can be using light-emitting components such as light emitting diodes (LED).
Capacitance pen 100 also includes power supply 8 and cradle 9, and power supply 8 can use 4A batteries, lithium battery or super capacitor, for control
Processing unit 1 processed, boosting unit 5, indicator lamp 7 etc. are powered.Cradle 9 is connected with power supply 8, for being power supply by external power source
8 chargings.
Housing 10 be used for fix control process unit 1, transmitting element 2, switch 3, pressure measurement cell 4, boosting unit 5,
Button 6, indicator lamp 7, power supply 8 and cradle 9.The written position 2 ' of housing 10 is provided with opening, to be used as transmitting element 2
The end that nib is contacted with capacitance touching control panel 200 can therefrom be stretched out.The size of opening is corresponding with the thickness of nib.Housing
10 parts contacted with hand are conductor, and because human body is a larger electric capacity in itself, the stability of specific capacitance pen 100 is strong, passes through
Capacitance pen 100 is connected with human body, the stability for receiving signal can be strengthened.
The capacitance pen 100 of the present invention realizes capacitance touching control panel to electricity by sending measurement signal to capacitance touching control panel
Hold the positioning of pen and obtain the key information and pressure sensitivity information of capacitance pen, because capacitance touching control panel 200 only need to be according to measurement
Signal is position, pressure and the key information that can determine that capacitance pen 100, without touching change electric capacity by capacitance pen or finger
The electric capacity of itself of contact panel 200 determines touch location, thus the nib of capacitance pen 200 can be made very thin, such as diameter is small
In 3mm, thus it is highly convenient for writing.Also, because in whole interaction, either capacitance pen 100 sends measurement signal
Or capacitance touching control panel 200 receives measurement signal and obtains touch information, signal all is sent without capacitance touching control panel 200, because
And the capacitance pen 100 of the present invention will not be influenceed by the signal intensity of capacitance touching control panel 200, with good interactive experience.
Fig. 3 is the structural representation of capacitance touching control panel 200.As shown in figure 3, capacitance touching control panel 200 includes induced electricity
Pole, detecting signal unit 203 and signal processing unit 204, induction electrode include first electrode group 201 and second electrode 202.The
One electrode group 201 and the interlaced arrangement of second electrode group 202, are collectively formed on touch area, touch area covered with insulation
Layer, prevents finger or other conductors from being contacted with first electrode group 201 and second electrode group 202.The electricity of first electrode group 201 and second
Mutually insulated between pole group 202, coupled capacitor can be formed in staggered place.
In the present embodiment, what the transmitting element 2 that induction electrode receives capacitance pen 100 by capacitive coupling was sent
Measurement signal, the signal that detecting signal unit 203 is received according to the communication protocol of setting to induction electrode 201,202 is scanned
Detection, signal processing unit 204 obtains the touch information of capacitance pen 100 according to the testing result of detecting signal unit 203.
It is understood that capacitance touching control panel 200 can be supported the use outside with capacitance pen 100, finger touch can be also carried out,
Now, panel control process unit 203 controls the first electrode group 201 or second electrode group 202 to be sent as sender electrode
Measurement signal simultaneously controls the first electrode group 201 and second electrode group 202 is another as induction electrode receives the measurement signal.
When finger touches capacitance touching control panel 200, finger and sender electrode formation coupled capacitor receive a part of measurement signal so as to
Induction electrode is caused to receive the change of signal, panel control process unit 203 determines finger position according to induction electrode signal intensity
Put.
It will also be appreciated that capacitance touching control panel 200 can set two kinds of mode of operations, finger detection mode and capacitance pen
Detection pattern.It can be set as needed as the switching mode of the two.
Fig. 4 is the positioning schematic of contactor control device 300.As shown in figure 4, when capacitance pen 100 is located at capacitance touching control panel 200
Touch area when, selection X-axis electrode as induction electrode, every 2 adjacent X-axis electrodes as one group, measure its receive letter
Number difference value.Such as, mono- group of X1 and mono- group of X2, X2 and X3 groups, X3 and X4, the rest may be inferred.Signal is received by each group electrode
Difference value, you can calculate capacitance pen 100 be located at X-direction coordinate.Similarly, can using Y-axis electrode as induction electrode,
Measurement obtains the coordinate that capacitance pen 100 is located at Y-axis.
Also the single induction electrode of X-axis can one by one be scanned, the reception signal of each induction electrode is measured respectively
Intensity, the intensity for receiving signal by each induction electrode obtains the coordinate that capacitance pen 100 is located at X-direction.By same
Mode obtains the coordinate that capacitance pen 100 is located at Y-axis.
Certainly, the positioning method of contactor control device 300 is also a variety of in addition to above two, can be carried out according to actual requirement specific
Set.
The contactor control device 300 that the present invention is provided, in order that capacitance pen 100 with capacitance touching control panel 200 can with co-ordination,
Corresponding communication protocol is formulated.Illustrate the communication protocol of contactor control device 300 of the present invention with reference to Fig. 5 to Fig. 8.
Fig. 5 is the schematic diagram for the measurement signal for representing one embodiment of the present invention.As shown in figure 5, in present embodiment,
The measurement signal that capacitance pen 100 is sent to capacitance touching control panel 200 includes positioning signal, initial signal and data-signal, wherein
Positioning signal is used for the position for determining capacitance pen 100, and initial signal represents that capacitance pen 100 starts to send out to capacitance touching control panel 200
Data-signal is sent, data-signal represents the pen point pressure and/or key information of capacitance pen 100.
In the present embodiment, in order that capacitance pen 100 can be formulated as follows with capacitance touching control panel 200 with co-ordination
Communication protocol：Positioning signal is that frequency is f1 square-wave signals, and the time span of positioning signal scans window for capacitance touching control panel 200
2 times of mouth duration.Initial signal is that the time span for not sending signal with capacitance touching control panel represents that time span is capacitive touch
Control 8 times of the scanning window duration of panel 200.Data-signal includes long numeric data, wherein being believed with the square wave of 2 times of scanning window durations
Number and 5 times of scanning windows stop sending signal durations and represent 1, with the square-wave signal and 2 times of scanning windows of 2 times of scanning window durations
Stop transmission signal duration and represent 0.
Wherein, scanning window is the sweep time length that capacitance touching control panel obtains information, i.e. detecting signal unit 203 enters
The time span of row single pass signal, it is related to the frequency for the signal to be scanned or cycle and number, to certain frequency
It is a set time length for rate waveform.N is the waveform number of 203 1 scanning windows of detecting signal unit, and it is root
The fixed value set according to demand.Assuming that N is 32, then the single pass of detecting signal unit 203 can scan 32 waveforms, such as believe
Number scan frequency of detection unit 203 be f1, cycle be T1 waveform, then scanning window when a length of 32T1.When signal detection list
First 203 scan frequencies be f2, cycle be T2 waveform, then scanning window when a length of 32T2.
If as shown in fig. 6, the time span for the one-time continuous waveform that capacitance pen 100 is sent for 3 scanning windows when
Long, then detecting signal unit 203 can be at least scanned to a complete waveform.Therefore in order that detecting signal unit 203 can be with
Complete waveform is scanned, signal time length is at least the duration of 2 scanning windows.Therefore in the present embodiment, positioning
The duration of signal, initial signal and data-signal is the integral multiple of scanning window duration, and the integer is more than or equal to 2.
As shown in figure 5, the scanning window of capacitive touch screen is N*T1, initial signal is believed to stop sending in measurement signal
Number, time span is 8 times of the scanning window duration of capacitance touching control panel 200, with the side of 2 times of scanning window durations in data-signal
The stopping of ripple signal and 5 times of scanning window durations sends signal and represents 1, is swept with the square-wave signal of 2 times of scanning window durations and 2 times
The stopping for retouching window duration sends signal and represents 0, therefore detecting signal unit 203 in start bit when being scanned, and scans
The scanning window number for not having signal may be 7,8,9, because during 203 scanning survey signal of detecting signal unit, its is right
The position for the measurement signal answered is uncertain, if continuously scanning 8 times, the time scanned every time is that a scanning window is long
Degree, if just aliging this 8 windows, scanning has 8 to the scanning window without signal, if do not alignd, starts
May be identified as signal with the scanning window of end may also be identified as no signal (because the scanning window phase has one
Dividing has signal), therefore the number of the scanning window without signal is probably 7, it is also possible to 9.The data-signal of expression 1 and expression
0 data-signal is similar with this, i.e. scanning may be to the scanning window number without signal in 1 data-signal is represented
4th, 5,6, it may be 1,2,3 to arrive the scanning window number without signal in the data-signal scanning for representing 0, therefore by continuous
The number for having the scanning window without signal after the scanning window of signal in scanning can determine whether start bit, 0 or 1 letter
Breath, so that it is determined that positioning signal, initial signal and data-signal, it is possible to parse the data message of measurement signal.
It is understood that first 1 and second 0 represent 1 data-signal and represent 0 data letter in Fig. 5
Number waveform, it must be 1 that first is not represented in whole data-signal, and second must be 0, and whole data-signal is according to tool
Pressure information, the key information of body carry out binary coding, and the binary coding is expressed as into data letter with corresponding waveform
Number.
Fig. 7 is the workflow schematic diagram of one embodiment of the present invention capacitance touching control panel 200, and the workflow is corresponding
It is the communication protocol shown in Fig. 5.
As shown in fig. 7, in step S70, the detecting signal unit 203 of capacitance touching control panel 200 is carried out continuously f1 scannings,
I.e. scan frequency be f1, cycle be T1 waveform, each sweep time is a scanning window, and detecting signal unit 203 is entering
Step S71 is performed simultaneously during row scanning, that is, judges whether there is signal in present scan, i.e., whether scan frequency for f1, cycle
For T1 waveform, proceed to scan next time if not, if so, being then transferred to step S72.In step S72, electric capacity
The detecting signal unit 203 of contact panel 200 continues to be carried out continuously f1 scannings, while performing step S73, that is, judges present scan
In whether have signal, if then proceeding to scan next time, if it is not, being transferred to step S74.In step S74, electricity
The detecting signal unit 203 for holding contact panel 200 continues to be carried out continuously f1 scannings, and calculates of the scanning window without signal
Number.Due to having had a scanning window without signal when entering step S74, therefore in step S75, without signal
The number n of scanning window is started counting up from 1.Perform step S74 when simultaneously perform step S75, that is, judge be in present scan
It is no to have signal, if it is not, proceed to scan next time, and the number of the scanning window without signal plus 1, if
Have, then into step S76.Signal type is determined according to the quantity of the scanning window without signal in step S76, i.e., basis does not have
The quantity for having the scanning window of signal determines that the waveform combination that this period scan from step S74 to step S76 is that starting is believed
Number, represent 1 data-signal and represent 0 data-signal in which.Such as by taking Fig. 5 data-signal as an example, if do not had
The scanning window number for having signal is 7,8,9, then the signal of this time is initial signal, if the scanning window without signal
Number is 4,5,6, then the signal of this time is the data-signal of expression 1.After step S76 is completed, return to step S72, after
The continuous signal type for judging subsequent time period, after the type of all signals has been judged, then carries out step S77, according to class signal
Type obtains data message, i.e., the pressure information or button of capacitance pen are determined according to the binary data and respective settings that parse
Information.
It is understood that Fig. 5 is only an example for representing present embodiment communication protocol, the specific numeral in Fig. 5
Only to facilitate explanation, the limitation to present embodiment communication protocol is not represented.This communication protocol can be set respectively as needed
Suitable numeral is planted, as long as stopping sends the duration of signal in initial signal, the data-signal of expression 1, the data-signal of expression 0
It in a scan can distinguish, that is, when scanning, correspondence initial signal, represent 1 data-signal, represent 0 data-signal
There is no the scanning window number of signal different.That is, such as initial signal, represent 1 data-signal, represent 0
In data-signal stop send signal duration be respectively scanning window a, b, c times, a, b, c be positive integer, as long as then a-1,
A, a+1, b-1, b, b+1, c, c-1, c+1 are mutually different positive integer.Such as, also can the time span of initial signal be
9 times of scanning window duration, represent that the stopping in 1 data-signal sends 6 times that signal is scanning window duration, represent 0
Stop sending when a length of 3 times of scanning window duration of signal in data-signal, capacitance pen 100 and capacitance touching control equally can be achieved in it
The co-ordination of panel 200.
It will also be appreciated that in the present embodiment, in order to not influence the detection to finger, execution step can be set in
During S70 and S71, if never signal is arrived in scanning in setting time, capacitance touching control panel enters finger detection mode.
Fig. 5 to Fig. 7 is only an embodiment of communication protocol of the present invention, and the present invention is not limited to this, with reference to Fig. 8
To describe another communication protocol of the present invention.
Fig. 8 is the schematic diagram for the measurement signal for representing another embodiment of the invention.As shown in figure 8, present embodiment
In, the measurement signal that capacitance pen 100 is sent to capacitance touching control panel 200 includes positioning signal, initial signal and data-signal, its
Middle positioning signal is used for the position for determining capacitance pen 100, and initial signal represents that capacitance pen 100 starts to capacitance touching control panel 200
Data-signal is sent, data-signal represents the pen point pressure and/or key information of capacitance pen 100.
In the present embodiment, in order that capacitance pen 100 can be formulated as follows with capacitance touching control panel 200 with co-ordination
Communication protocol：Positioning signal is that frequency is f1 square-wave signals, and the time span of positioning signal is scanning window corresponding with frequency f1
3 times of mouth duration.The time span that initial signal stops sending with capacitance touching control panel represents that time span is and frequency f1
6 times of corresponding scanning window duration.Data-signal includes long numeric data, wherein with the square-wave signal of f1 frequencies and f2 frequencies
Square-wave signal represents 1, and 3 times of a length of scanning window duration corresponding with frequency f1 during the square-wave signal of f1 frequencies, f2 frequencies
Square-wave signal when 3 times of a length of scanning window duration corresponding with frequency f2；With the square-wave signal of f1 frequencies and low do not send
The combination of signal represents 0, and 3 times of a length of scanning window duration corresponding with frequency f1 during the square-wave signal of f1 frequencies, does not send out
The number of delivering letters when 3 times of a length of scanning window duration corresponding with frequency f2.
Due to the waveform comprising two kinds of frequencies in the measurement signal of present embodiment, then detecting signal unit 203 is correspondingly
Two kinds of waveforms can be scanned, you can with scan frequency f1 waveform and frequency f2 waveform.When scanning f1 waveforms, if now
The start bit of correspondence measurement signal, the then scanning window number without signal scanned may be 4,5,6, because signal
During 203 scanning survey signal of detection unit, the position of its corresponding measurement signal is uncertain, if continuously scanning 6 times, often
The time of secondary scanning is a scanning window length, if just aliging this 6 windows, and the scanning window without signal is arrived in scanning
Mouth has 6, if do not alignd, the scanning window of beginning and end, which may be identified as signal, may also be identified as not having
There is signal (some has signal due to the scanning window phase), therefore the number of the scanning window without signal is probably 5, also may be used
Can be 7.Represent that 1 data-signal is similar with this with the data-signal for representing 0, i.e. during scanning f1 waveforms, representing 1 or 0 number
It is believed that number in scanning to the scanning window number without signal may be 2,3,4, therefore by be carried out continuously f1 scanning in have
The number of the scanning window without signal after the scanning window of signal is that can determine whether it is start bit, when it is determined that start bit
Afterwards, then it represents that signal below is data-signal, 1 or 0 can be distinguished by carrying out f1 scannings and f2 scannings, so as to parse
Go out the data message of measurement signal.
It is understood that Fig. 8 is only an example for representing present embodiment communication protocol, the specific numeral in Fig. 8
Only to facilitate explanation, the limitation to present embodiment communication protocol is not represented.This communication protocol can be set respectively as needed
Suitably numeral is planted, the core of this communication protocol is represents in 1 data-signal and the data-signal of expression 0, f2 frequency waveforms
Duration and do not send signal when a times of a length of respective scanned window, a length of when not sending signal of initial signal accordingly sweeps
Retouch window b times, a, b are positive integer, and initial signal, represent f2 frequencies waveform and not send in 1 or 0 data-signal
The duration of signal can be distinguished in a scan, that is, when scanning, and corresponded to initial signal, the data-signal of expression 1, represented 0
The scanning window number without signal of data-signal is different, i.e., a-1, a, a+1, b-1, b, b+1 are different positive integers.
Such as also can initial signal time span be 9 times of scanning window duration corresponding with frequency f1, represent 1 data-signal in
Frequency f2 waveform when 6 times of a length of scanning window duration corresponding with frequency f2, represent to stop sending in 0 data-signal
When a length of 6 times of scanning window duration corresponding with frequency f1 of signal, capacitance pen 100 and capacitance touching control panel equally can be achieved in it
200 co-ordination.
Although it is understood that being to distinguish initial signal to stop sending the duration of signal in the above-described embodiment
And data-signal, but and be confined to this, but other signals different from positioning signal can be taken, as long as i.e. initial signal, table
The data-signal for showing " 1 ", the data-signal for representing " 0 " include the waveform of setting, and initial signal, the data of expression " 1 "
The duration that waveform is set in signal, the data-signal of expression " 0 " is different, then using the judgement similar to above-mentioned embodiment
Method distinguishes each signal.Preferably.The data-signal of initial signal, expression " 1 " or " 0 " includes the waveform of setting, and institute
The duration for stating setting waveform in initial signal, the data-signal of expression " 1 " or " 0 " is different.Preferably, the data letter of " 1 " is represented
Number and represent to contain different waveform segments in the data-signal of " 0 ", and the different waveform segment duration is identical, so can be with
More easily discriminate the data-signal of expression " 1 " and the data-signal of expression " 0 ".
Principle that embodiment of above is intended to be merely illustrative of the present and the illustrative embodiments used, but this hair
It is bright to be not limited thereto.For those skilled in the art, the feelings of spirit and substance of the present invention are not being departed from
Under condition, various changes and modifications can be made therein.These variations and modifications are also considered as the guard interval of the present invention.
Claims (11)
1. a kind of capacitance pen, for being operated on capacitance touching control panel (200), it is characterised in that including：
Control process unit (1), it generates the measurement signal of corresponding sequence, the measurement signal bag according to the communication protocol of setting
Include for determine the capacitance pen position positioning signal, represent start send data message initial signal and for obtaining
The data-signal of capacitance pen (100) data message is stated, the time span of the positioning signal, initial signal and data-signal is institute
The integral multiple of capacitance touching control panel (200) scanning window duration is stated, the integer is more than or equal to 2, the positioning signal and starting
Signal includes the waveform of identical frequency, and the measurement signal includes the waveform of two kinds of frequencies, passes through the waveform combination of two kinds of frequencies
Different scanning window duration represents data-signal；With
Transmitting element (2), it, which is used to send the measurement signal to the capacitance touching control panel (200), makes the capacitance touching control
Panel (200) determines the positioning signal, initial signal and data-signal according to the number of the scanning window without measurement signal,
During scanning, correspondence initial signal, the data-signal for representing " 1 ", the scanning window without signal of the data-signal of expression " 0 "
Number is different, and then according to the positioning signal and the touch information of the data-signal acquisition capacitance pen (100).
2. capacitance pen as claimed in claim 1, it is characterised in that the initial signal, the data-signal of expression " 1 ", expression
The data-signal of " 0 " includes the waveform of setting, and the initial signal, the data-signal of expression " 1 ", the number for representing " 0 "
It is believed that number in setting waveform duration it is different.
3. capacitance pen as claimed in claim 1, it is characterised in that the data-signal of the initial signal, expression " 1 " or " 0 "
The duration that waveform is set in waveform comprising setting, and the data-signal of the initial signal, expression " 1 " or " 0 " is different.
4. capacitance pen as claimed in claim 3, it is characterised in that represent the data-signal of " 1 " and the data-signal of expression " 0 "
In contain different waveform segments, and the different waveform segment duration is identical.
5. the capacitance pen as described in claim 1-3 any one, it is characterised in that also including switch element (3), its with it is described
Control process unit (1) is connected, and the control process unit (1) controls the measurement according to the state of the switch element (3)
The transmission of signal.
6. the capacitance pen as described in claim 1-3 any one, it is characterised in that also including pressure measurement cell (4), it is used
In the pressure of the measurement capacitance pen nib, and testing result is sent to the control process unit (1),
The control process unit (1) controls the hair of the measurement signal according to the testing result of the pressure measurement cell (4)
Send.
7. a kind of capacitance touching control method, the interactive operation for realizing capacitance pen (100) and capacitance touching control panel (200), it is special
Levy and be, including：
The step of capacitance pen (100) sends the measurement signal of corresponding sequence according to the communication protocol of setting；With
The capacitance touching control panel (200) scans the measurement signal in each scanning window, and according to the communication protocol of setting
The measurement signal is parsed, the step of obtaining the touch information of the capacitance pen (100), wherein
The measurement signal is including being used to determine the positioning signal of the capacitance pen position, representing to start to send rising for data message
Beginning signal and the data-signal for obtaining the capacitance pen (100) data message, the positioning signal, initial signal and data
The time span of signal is the integral multiple of the capacitance touching control panel (200) scanning window duration, and the integer is more than or equal to 2,
The positioning signal and initial signal include the waveform of identical frequency, and the measurement signal includes the waveform of two kinds of frequencies, passed through
The waveform combinations of two kinds of frequencies different scanning window duration represents data-signal；
The capacitance touching control panel according to without the measurement signal the scanning window quantity determine the positioning signal,
Initial signal and data-signal, during scanning, correspondence initial signal, represent the data-signal of " 1 ", represent the data-signal of " 0 "
There is no the scanning window number of signal different, and then the capacitance pen (100) is obtained according to the positioning signal and data-signal
Touch information.
8. capacitance touching control method as claimed in claim 7, it is characterised in that the initial signal, the data of expression " 1 " letter
Number, represent " 0 " data-signal comprising setting waveform, and the initial signal, the data-signal of expressions " 1 ", expression
The duration that waveform is set in the data-signal of " 0 " is different,
The capacitance touching control panel (200) set according to received signal waveform duration determine the positioning signal,
Initial signal and data-signal.
9. the capacitance touching control method as described in claim requirement 7, it is characterised in that the initial signal, expression " 1 " or " 0 "
Data-signal comprising setting waveform, and in the data-signal of the initial signal, expressions " 1 " or " 0 " setting waveform when
It is long different,
The duration that the capacitance touching control panel (200) sets waveform according to received signal determines the positioning signal.
10. capacitance touching control method as claimed in claim 9, it is characterised in that represent data-signal and the expression " 0 " of " 1 "
Contain different waveform segments in data-signal, and the different waveform segment duration is identical,
The capacitance touching control panel (200) duration of different wave section according to received signal determines the expression " 1 "
Data-signal and expression " 0 " data-signal.
11. a kind of capacitance touch-control device, it is characterised in that including：
Capacitance pen (100), and
Capacitance touching control panel (200), wherein
The capacitance pen (100) includes
Control process unit (1), it generates the measurement signal of corresponding sequence, the measurement signal bag according to the communication protocol of setting
Include for determine the capacitance pen position positioning signal, represent start send data message initial signal and for obtaining
The data-signal of capacitance pen (100) data message is stated, the time span of the positioning signal, initial signal and data-signal is
The integral multiple of capacitance touching control panel (200) the scanning window duration, the integer be more than or equal to 2, the positioning signal and rise
Beginning signal includes the waveform of identical frequency, and the measurement signal includes the waveform of two kinds of frequencies, passes through the sets of waveforms of two kinds of frequencies
Different scanning window durations is closed to represent data-signal；With
Transmitting element (2), it is used to send the measurement signal to the capacitance touching control panel (200),
The capacitance touching control panel (200) includes
Induction electrode (201,202), its transmitting element (2) that the capacitance pen (100) are received by capacitive coupling is sent
Measurement signal,
Detecting signal unit (203), it scans the measurement letter that the induction electrode (201,202) receives in each scanning window
Number,
Signal processing unit (204), it does not detect the described of the measurement signal according to the detecting signal unit (203)
The quantity of scanning window determines the positioning signal, initial signal and data-signal, during scanning, correspondence initial signal, expression " 1 "
Data-signal, represent " 0 " data-signal scanning window number without signal it is different, and then according to the positioning signal
The touch information of the capacitance pen (100) is obtained with data-signal.
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| CN201410176118.XA CN103941891B (en) | 2014-04-29 | 2014-04-29 | Capacitance pen, capacitance touching control method and capacitance touch-control device |
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| CN201410176118.XA CN103941891B (en) | 2014-04-29 | 2014-04-29 | Capacitance pen, capacitance touching control method and capacitance touch-control device |
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| CN103941891A CN103941891A (en) | 2014-07-23 |
| CN103941891B true CN103941891B (en) | 2017-09-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104465474B (en) * | 2014-11-14 | 2017-09-15 | 昆山工研院新型平板显示技术中心有限公司 | Display device transfers positioner and its method |
| KR102260600B1 (en) * | 2014-12-31 | 2021-06-04 | 엘지디스플레이 주식회사 | Touch screen device |
| US10671190B2 (en) * | 2015-10-02 | 2020-06-02 | Microsoft Technology Licensing, Llc | Stylus pen with dynamic protocol selection for communication with a digitizer |
| TWI564770B (en) * | 2015-12-08 | 2017-01-01 | 中強光電股份有限公司 | Electronic whiteboard and touch sensing signal transferring method thereof |
| CN117032475A (en) * | 2016-07-27 | 2023-11-10 | 株式会社和冠 | Sensor controller, sensor controller method and electronic equipment |
| CN106976339B (en) * | 2017-03-17 | 2018-02-16 | 浙江大学 | A kind of pen and its method that can record writing number of words automatically |
| WO2019051669A1 (en) * | 2017-09-13 | 2019-03-21 | 深圳传音制造有限公司 | Active capacitive stylus applied to intelligent terminal, and touch device |
| CN108200309B (en) * | 2018-01-17 | 2019-12-17 | 广东小天才科技有限公司 | Scanning pen |
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