CN105468170B - Data transmission method, system between capacitance pen and touch screen and device - Google Patents

Abstract

The invention discloses data transmission method, data transmission system, capacitance pen and the touch screens between a kind of capacitance pen and touch screen.Wherein, it the described method comprises the following steps：Capacitance pen obtains data to be transmitted；Capacitance pen generates the first pumping signal according to the reception sequential of receiving pole in data to be transmitted and touch screen；And capacitance pen emits the first pumping signal, so that receiving pole is decoded according to the first pumping signal of ordered pair when receiving to obtain data to be transmitted.The method of the embodiment of the present invention is encoded using multi-system (e.g., ternary, quinary) when capacitance pen generates the first pumping signal, reduces the time of data transmission, improve data transmission precision, to which the user experience is improved.

Description

Data transmission method, system between capacitance pen and touch screen and device

Technical field

The present invention relates to electronic technology field, more particularly to data transmission method between a kind of capacitance pen and touch screen, Data transmission system, capacitance pen and touch screen.

Background technology

Capacitance pen is mainly divided to active and two kinds of passive type.Passive type capacitance pen is the thick head pen of the common soft head of industry, when When hand holds this, pen and hand conducting touch screen instead of finger.Capacitance change caused by this passive type capacitance pen It is small, so increasing contact area with the thick head of soft head to increase capacitance variations.But feel is not in this stroke to screen It gets well, and inside does not have corresponding pressure detection circuit so being unable to measure the data such as pressure, button, cannot achieve person's handwriting identification Etc. functions.

The general internal battery of active capacitance pen and chip send high-voltage signal to encourage capacitance plate (to touch using chip Touch screen) dependent coordinate is calculated, and strength of the user using capacitance pen when can be measured to realize that person's handwriting identifies.But it will pressure Power numerical value or push button signalling are transmitted to host (for example, micro-control unit MCU in mobile phone or tablet computer), and there are certain difficulty. Have plenty of through wired mode, is exactly that pen connects on single line to tablet；Some passes through the embedded with bluetooth in pen or infrared etc. Wireless transmitter module transmits signal；Have plenty of and receive and parse through data in pen tip transmitting and then capacitance plate and be then passed to host, The emitter TX of capacitance plate sends waveform when transmission, and capacitance pen receives this waveform as clock signal, then capacitance pen transmission Corresponding signal (for example, binary code 0 or 1), after the receiving pole RX of capacitance plate receives this signal of capacitance pen transmission Data are parsed again, are then sent to host.

But it above-mentioned pressure value or push button signalling is transmitted to method used by host is respectively present following disadvantage：(1) Wired mode is technically simple but inconvenient to use, and the line ined succession on pen can influence to use feel；(2) built-in with wireless module at This high power consumption is big and volume also be difficult to do it is small；(3) the pen tip transmitting mode cost that then capacitance plate receives is minimum, but realizes Difficulty is big.Because the pen tip of capacitance pen is very tiny, if the emitter TX of tranmitting data register signal is not near pen tip, pen tip is basic Just do not receive.And the speed that capacitance pen slides on the screen is quickly, even if pen tip is on a TX when rigid transmission data, when Pen tip has slided on other TX when data are sent to half, and relative displacement can also occur with the RX of reception, and RX is made to connect The jitter received.For example, if the pressure value that capacitance pen will send 10 precision (1024 resolution ratio) adds 2 again Button and check bit are it is necessary to reaching 16 or so data.The speed slided on the touchscreen due to capacitance pen quickly, data bit More, the transmission data required time is longer, then displacement of the capacitance pen on screen may be bigger, the data that RX is received Error rate is higher, to influence the use feeling of user.

Invention content

The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention One purpose is to propose that the data transmission method between a kind of capacitance pen and touch screen, capacitance pen generate the first pumping signal When, it is encoded using multi-system (e.g., ternary, quinary), reduces the time of data transmission, improve data transmission essence Degree, to which the user experience is improved.

Second object of the present invention is to propose a kind of data transmission system.

Third object of the present invention is to propose a kind of capacitance pen.

Fourth object of the present invention is to propose a kind of touch screen.

To achieve the goals above, the transmission side data between the capacitance pen and touch screen of first aspect present invention embodiment Method includes the following steps：Capacitance pen obtains data to be transmitted；The capacitance pen connects according in the data to be transmitted and touch screen The reception sequential for receiving pole generates the first pumping signal；And the capacitance pen emits first pumping signal, so that described connect Pole is received to be decoded to obtain the data to be transmitted according to the first pumping signal described in ordered pair when the reception.

Data transmission method between capacitance pen and touch screen according to the ... of the embodiment of the present invention, capacitance pen obtain number to be transmitted According to, capacitance pen generates the first pumping signal according to the reception sequential of receiving pole in data to be transmitted and touch screen and emits, so that Receiving pole is decoded according to the first pumping signal of ordered pair when receiving to obtain data to be transmitted, and capacitance pen generates the first excitation letter Number when, encoded using multi-system (e.g., ternary, quinary), reduce the time of data transmission, improve data transmission Precision, to which the user experience is improved.

To achieve the goals above, the data transmission system of second aspect of the present invention embodiment, including：Capacitance pen and touch Screen, wherein the capacitance pen is received for obtaining data to be transmitted, and according in the data to be transmitted and the touch screen The reception sequential of pole generates the first pumping signal, and transmitting first pumping signal；The touch screen, it is described for receiving First pumping signal, and be decoded according to the first pumping signal described in ordered pair when the reception to obtain the number to be transmitted According to.

Data transmission system according to the ... of the embodiment of the present invention, capacitance pen is for obtaining data to be transmitted and according to number to be transmitted The first pumping signal is generated according to the reception sequential with receiving pole in touch screen and is emitted, and touch screen is for receiving the first excitation letter Number, and be decoded according to the first pumping signal of ordered pair when receiving to obtain data to be transmitted, capacitance pen generates the first excitation letter Number when, encoded using multi-system (e.g., ternary, quinary), reduce the time of data transmission, improve data transmission Precision, to which the user experience is improved.

To achieve the goals above, the capacitance pen of third aspect present invention embodiment, including：Acquisition module, for obtaining Data to be transmitted；Generation module, for generating first according to the reception sequential of receiving pole in the data to be transmitted and touch screen Pumping signal；And transmission module, for emitting first pumping signal.

Capacitance pen according to the ... of the embodiment of the present invention obtains data to be transmitted by acquisition module, and generation module is according to be passed The reception sequential of receiving pole generates the first pumping signal in transmission of data and touch screen, and transmission module then emits the first pumping signal, It when generation module generates the first pumping signal, is encoded using multi-system (e.g., ternary, quinary), reduces data biography The defeated time improves data transmission precision, to which the user experience is improved.

To achieve the goals above, the touch screen of fourth aspect present invention embodiment, including：Emitter；Receiving pole is used for Receive the first pumping signal of capacitance pen transmitting；Decoder module is used for when the reception according to the receiving pole first described in ordered pair Pumping signal is decoded to obtain data to be transmitted.

Touch screen according to the ... of the embodiment of the present invention, receiving pole receive the first pumping signal of capacitance pen transmitting, decoder module It is then decoded according to the first pumping signal of ordered pair when the reception of receiving pole to obtain data to be transmitted, wherein capacitance pen emits The first pumping signal encoded using multi-system (e.g., ternary, quinary), decoder module then pass through detect coupled capacitor The first pumping signal of the quantity of electric charge pair be decoded, to obtain data to be transmitted, reduce the time of data transmission, improve number According to transmission precision, to which the user experience is improved.

Description of the drawings

Fig. 1 is the flow chart of the data transmission method between capacitance pen and touch screen according to an embodiment of the invention；

Fig. 2 is the schematic diagram that capacitance pen according to an embodiment of the invention slides on the touchscreen；

Fig. 3 is the schematic diagram of the capacitive coupling relation of touch screen and capacitance pen according to an embodiment of the invention；

Fig. 4 is the waveform that capacitance pen according to an embodiment of the invention passes through ternary encoding transmission data with touch screen Schematic diagram；

Fig. 5 is the waveform that capacitance pen according to an embodiment of the invention passes through quinary encoding transmission data with touch screen Schematic diagram；

Fig. 6 is the schematic diagram of capacitance pen transmission binary waveform in the related technology；

Fig. 7 is the schematic diagram of the waveform of 55 binary datas according to an embodiment of the invention；

Fig. 8 is the structural schematic diagram of data transmission system according to an embodiment of the invention；

Fig. 9 is the structural schematic diagram of capacitance pen according to an embodiment of the invention；

Figure 10 is the structural schematic diagram of touch screen according to an embodiment of the invention.

Specific implementation mode

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

The present invention proposes data transmission method, data transmission system, capacitance pen between a kind of capacitance pen and touch screen And touch screen.Below with reference to the accompanying drawings describe data transmission method between capacitance pen and touch screen according to the ... of the embodiment of the present invention, Data transmission system, capacitance pen and touch screen.

Fig. 1 is the flow chart of the data transmission method between capacitance pen and touch screen according to an embodiment of the invention. As shown in Figure 1, the data transmission method between the capacitance pen and touch screen of the embodiment of the present invention, includes the following steps：

S101, capacitance pen obtain data to be transmitted.

Specifically, capacitance pen obtains data to be transmitted according to user to the operation of pen tip.Capacitance pen is illustrated in figure 2 to touch Touch the schematic diagram slided on screen.

S102, capacitance pen generate the first pumping signal according to the reception sequential of receiving pole in data to be transmitted and touch screen.

In one embodiment of the invention, before capacitance pen generates the first pumping signal, the emitter of touch screen is sent out The second pumping signal is penetrated, capacitance pen generates the first pumping signal according to the reception sequential of receiving pole in data to be transmitted and touch screen It specifically includes：Capacitance pen generates first according to the reception sequential of receiving pole in the second pumping signal, data to be transmitted and touch screen Pumping signal.

In one embodiment of the invention, the sequential of the second pumping signal is identical as sequential is received.I.e. when touch screen When emitter TX emits the second pumping signal, the reception sequential of receiving pole RX is synchronous.

Specifically, the detection method of mutual capacitance screen (i.e. touch screen) in the related technology is introduced first below.Work as hand When finger or capacitance pen are put on the touchscreen, the capacitive coupling relation of touch screen and finger or capacitance pen is as shown in Figure 3.Capacitance pen is put When on the touchscreen, capacitance pen is just and the emitter TX on touch screen and receiving pole RX forms coupled relation, as shown in Figure 3.It touches The waveform for touching the TX transmissions of screen generates excitation by C1 to RX, and excitation, the signal of capacitance pen transmission are generated to capacitance pen by C3 RX is then coupled to by C2.When TX emits excitation waveform, the reception sequential of internal RX is synchronous.Rise when TX encourages to send Along when, RX sequential is positive energize, and RX can detect the variable quantity forward direction of C1 at this time, and (wherein, Vtx is one to the quantity of electric charge for C1*Vtx A definite value, for the driving voltage of touch screen transmitting)；When TX, which is encouraged, sends failing edge, RX sequential is negative energize, and negative energize is exactly Reverse energization, because rising edge and failing edge are just on the contrary, if it is positive energize, the quantity of electric charge is exactly-C1*Vtx, and normal shock just now Quantity of electric charge C1*Vtx addition results when encouraging are 0, do not measure and, if it is negative energize, the quantity of electric charge is exactly-(- C1*Vtx), i.e., C1*Vtx, the result finally detected are exactly that the variable quantity encouraged twice is allowed to add up, quantity of electric charge 2*C1*Vtx.It improves in this way Variable quantity and signal-to-noise ratio.

In one embodiment of the invention, capacitance pen passes through ternary encoding transmission data with touch screen, wherein works as electricity When appearance pen does not generate excitation after the driving pulse for receiving the second pumping signal, the data that capacitance pen is transmitted to touch screen are 0；When capacitance pen is in generation after the driving pulse for receiving the second pumping signal and the second pumping signal isotropic excitation, capacitance The data that pen is transmitted to touch screen are+1；And when capacitance pen generated after receiving the driving pulse of the second pumping signal with When the second pumping signal reverse energization, the data that capacitance pen is transmitted to touch screen are -1.

Specifically, excitation is not generated after receiving the driving pulse of the second pumping signal of TX transmittings when capacitance pen When, that is, it is always maintained at high level or low level, then the rising edge and failing edge in the second pumping signal all only have C1 chargings, C2 does not charge, then the quantities of electric charge that detect of the receiving pole RX of touch screen be 2*C1*Vtx (wherein, Vtx is a definite value, i.e., the The value of two pumping signals)；Swash in the same direction when capacitance pen generates after receiving the driving pulse of the second pumping signal of TX transmittings (capacitance pen generation is meant with the second pumping signal isotropic excitation when encouraging：Capacitance pen also sends rising when TX sends rising edge Edge, and capacitance pen also sends failing edge, i.e., the phase and the second pumping signal of the excitation that capacitance pen generates when TX transmission failing edges The phase of driving pulse be in the same direction), when TX sends rising edge, capacitance pen also sends rising edge, and C1 and C2 charge, that It is exactly that (wherein, Vpen is capacitance pen to C1*Vtx+C2*Vpen in the quantity of electric charge size for the isotropic excitation that rising edge RX is detected The voltage value of the signal of transmitting), when TX sends failing edge, capacitance pen also sends failing edge, and the quantity of electric charge that RX is detected is also the same It is C1*Vtx+C2*Vpen, then the result of last RX detections is exactly 2*C1*Vtx+2*C2*Vpen；When capacitance pen is receiving (capacitance pen generates reversed with the second pumping signal when generation reverse energization after the driving pulse of second pumping signal of TX transmittings Excitation is meant：Capacitance pen sends failing edge when TX sends rising edge, and capacitance pen sends rising edge when TX transmission failing edges, The phase and the phase of the driving pulse of the second pumping signal for the excitation that i.e. capacitance pen generates are reversed), rise when TX is sent Along when capacitance pen send failing edge when, the quantity of electric charge that at this moment RX is detected is C1*Vtx-C2*Vpen, when TX sends failing edge When capacitance pen sends rising edge, the quantity of electric charge at this moment detected is also C1*Vtx-C2*Vpen, detects accumulated result just twice It is 2*C1*Vtx-2*C2*Vpen.

It can be seen that capacitance pen is not encouraged with TX and detected value is 2*C1*Vtx when encouraging, when isotropic excitation is 2*C1* Vtx+2*C2*Vpen is 2*C1*Vtx-2*C2*Vpen when reverse energization.The data of RX detections gone out are it finds that isotropic excitation When data become larger, data become smaller when reverse energization, and data are constant when without encouraging.In this way, can tell capacitance pen to touch The data for touching screen transmission are 0 ,+1 or -1, for example, as shown in Figure 4.

In one embodiment of the invention, capacitance pen passes through quinary encoding transmission data with touch screen, wherein works as electricity Hold pen and do not generate excitation after receiving the rising edge of driving pulse of the second pumping signal and failing edge, alternatively, capacitance pen When rising edge and failing edge generate positive incentive and reverse energization respectively, the data that capacitance pen is transmitted to touch screen are 0；Work as electricity Hold pen when generating positive incentive after receiving the rising edge of driving pulse of the second pumping signal and failing edge, capacitance pen The data transmitted to touch screen are+2；When capacitance pen is in the rising edge and failing edge for receiving the driving pulse of the second pumping signal In one after when generating positive incentive, data that capacitance pen transmit to touch screen are+1；When capacitance pen is receiving second When generating reverse energization after the rising edge and failing edge of the driving pulse of pumping signal, number that capacitance pen is transmitted to touch screen According to being -2；And after capacitance pen is in one in receiving the rising edge and failing edge of driving pulse of the second pumping signal When generating reverse energization, the data that capacitance pen is transmitted to touch screen are -1.

Specifically, it is not produced after receiving the rising edge of driving pulse of the second pumping signal and failing edge when capacitance pen Raw excitation, that is, be always maintained at high level or low level, then the rising edge and failing edge in the second pumping signal all only have C1 Charging swashs then the quantity of electric charge that RX is detected is 2*C1*Vtx alternatively, capacitance pen generates forward direction respectively in rising edge and failing edge When encouraging with reverse energization, capacitance pen is when rising edge generates positive incentive (i.e. capacitance pen sends rising edge when TX sends rising edge) The quantity of electric charge that RX is detected is C1*Vtx+C2*Vpen, and capacitance pen generates reverse energization (i.e. when TX sends failing edge in failing edge Capacitance pen sends rising edge) when the quantities of electric charge that detect of RX be C1*Vtx-C2*Vpen, then last testing result is exactly C1* Vtx+C2*Vpen adds C1*Vtx-C2*Vpen, i.e. 2*C1*Vtx, alternatively, capacitance pen generates respectively in rising edge and failing edge When reverse energization and positive incentive, similarly, last testing result is that C1*Vtx-C2*Vpen adds C1*Vtx+C2*Vpen, It is 2*C1*Vtx；When capacitance pen generates just after receiving the rising edge of driving pulse of the second pumping signal and failing edge To when excitation, i.e. capacitance pen sends rising edge when TX sends rising edge, and capacitance pen sends failing edge when TX sends failing edge, then The quantity of electric charge that RX is detected is 2C1*Vtx+2C2*Vpen；When capacitance pen is receiving the upper of the driving pulse of the second pumping signal When generating positive incentive after one in liter edge and failing edge, i.e. capacitance pen sends rising edge when TX sends rising edge, and TX is sent out Electricity when capacitance pen does not generate excitation (i.e. capacitance pen keeps high level either low level) or TX transmission rising edges when sending failing edge Hold pen and do not generate excitation, capacitance pen sends failing edge when TX sends failing edge, and the quantity of electric charge that RX is detected is 2C1*Vtx+C2* Vpen；When capacitance pen generates reverse energization after receiving the rising edge of driving pulse of the second pumping signal and failing edge When, i.e. capacitance pen sends failing edge when TX sends rising edge, and capacitance pen sends rising edge when TX sends failing edge, what RX was detected The quantity of electric charge is 2C1*Vtx-2C2*Vpen；When capacitance pen is in rising edge and the decline for receiving the driving pulse of the second pumping signal When generating reverse energization after one in, i.e. capacitance pen sends failing edge when TX sends rising edge, when TX sends failing edge Capacitance pen does not generate excitation, alternatively, capacitance pen does not generate excitation when TX sends rising edge, capacitance pen is sent when TX sends failing edge Rising edge, the quantity of electric charge that RX is detected are 2C1*Vtx-C2*Vpen.

The quantity of electric charge that above-mentioned five kinds of situation RX are detected is respectively：2*C1*Vtx、2C1*Vtx+2C2*Vpen、2C1*Vtx+ The data that C2*Vpen, 2C1*Vtx-2C2*Vpen and 2C1*Vtx-C2*Vpen, i.e. capacitance pen are transmitted to touch screen are respectively 0 ,+ 2 ,+1, -2 and -1, for example, as shown in Figure 5.

What is illustrated in above example is that the case where TX excitations capacitance pen follows TX transmitting excitations in the same direction or reversely is (right respectively Answer two kinds of capacitance pen coordinate detection modes of reaction type and Exciting-simulator system, reaction type refer to the TX of capacitance plate send out a rising edge or under It drops capacitance pen after the excitation on edge and receives this and encourage and follow and send out pumping signal, the pumping signal sent out as needed may be with TX is sent in the same direction or reversed along signal.Exciting-simulator system is then that capacitance plate itself does not send signal, is only used as recipient, and pen is autonomous Send signal.The sequential and phase of signal are all appointed in advance).The variable quantity actually really differentiated only has the capacitance of C2 Value, so another detection method is that TX is not encouraged.Inside sequential is fixed when chip detects, if TX does not encourage only electricity Hold pen to send in the same direction or if reverse energization according to fixed time sequence, detected value would not be influenced by C1；Charge is when in the same direction 2*C2*Vpen；Charge is -2*C2*Vpen when reversed, and capacitance pen is 0 not the result detected when encouraging, you can with tell+ 1, -1 and 0.In this way, precision higher.The case where when not emitting pumping signal to the emitter TX of touch screen below, (realizes ternary Coding and quinary coding) it is described in detail.

In another embodiment of the present invention, the emitter of touch screen does not emit pumping signal.So, capacitance pen with touch It touches screen and passes through ternary encoding transmission data, wherein when capacitance pen does not generate excitation during the pulse for receiving sequential, capacitance The data that pen is transmitted to touch screen are 0；When capacitance pen receive sequential pulse during generate isotropic excitation when, capacitance pen to touch The data for touching screen transmission are+1；And when capacitance pen receive sequential pulse during generate reverse energization when, capacitance pen to touch The data for touching screen transmission are -1.

Specifically, when capacitance pen does not generate excitation during the pulse for receiving sequential, the quantity of electric charge detected is 0；When When capacitance pen generates isotropic excitation during the pulse for receiving sequential, i.e., sends and rise in the rising edge capacitance pen for receiving sequential Edge, and failing edge is sent in the failing edge capacitance pen for receiving sequential, the quantity of electric charge detected is 2*C2*Vpen；When capacitance pen exists When generating reverse energization during receiving the pulse of sequential, i.e., failing edge is sent in the rising edge capacitance pen for receiving sequential, and connecing The failing edge capacitance pen of time receiving sequence sends rising edge, and the quantity of electric charge detected is -2*C2*Vpen.

The quantity of electric charge that above-mentioned three kinds of situation RX are detected is respectively：0,2*C2*Vpen and -2*C2*Vpen, i.e. capacitance pen to The data of touch screen transmission are respectively 0 ,+1 and -1, for example, as shown in Figure 4.

In another embodiment of the present invention, the emitter of touch screen does not emit pumping signal.So, capacitance pen with touch Touch screen pass through quinary encoding transmission data, wherein when capacitance pen receive sequential rising edge and failing edge do not generate excitation, Alternatively, when capacitance pen generates positive incentive and reverse energization respectively during rising edge and failing edge, capacitance pen is passed to touch screen Defeated data are 0；When capacitance pen receive sequential rising edge and failing edge after generate positive incentive when, capacitance pen to touch The data for touching screen transmission are+2；When capacitance pen receive sequential rising edge and failing edge in one after generation positive incentive When, the data that capacitance pen is transmitted to touch screen are+1；And when capacitance pen is equal after receiving the rising edge and failing edge of sequential When generating reverse energization, the data that capacitance pen is transmitted to touch screen are -2；And when capacitance pen receive sequential rising edge and When generating reverse energization after one in failing edge, the data that capacitance pen is transmitted to touch screen are -1.

Specifically, when capacitance pen receive sequential rising edge and failing edge do not generate excitation, alternatively, capacitance pen is rising When positive incentive and reverse energization are generated during edge and failing edge respectively.That is the capacitance when receiving the rising edge and failing edge of sequential Pen does not generate excitation, or sends rising edge in the rising edge capacitance pen for receiving sequential, and in the failing edge capacitance for receiving sequential Pen sends rising edge, or sends failing edge in the rising edge capacitance pen for receiving sequential, and in the failing edge capacitance for receiving sequential Pen sends failing edge, and the quantity of electric charge detected is 0；When capacitance pen generates just after receiving the rising edge and failing edge of sequential To when excitation, i.e., rising edge is sent in the rising edge capacitance pen for receiving sequential, in the case where the failing edge capacitance pen for receiving sequential is sent Edge drops, and the quantity of electric charge detected is 2*C2*Vpen；When capacitance pen receive sequential rising edge and failing edge in one after When generating positive incentive, i.e., rising edge is sent in the rising edge capacitance pen for receiving sequential, in the failing edge capacitance pen for receiving sequential Excitation is not generated, alternatively, excitation is not generated in the rising edge capacitance pen for receiving sequential, in the failing edge capacitance pen hair for receiving sequential Failing edge is sent, the quantity of electric charge detected is C2*Vpen；When capacitance pen generates after receiving the rising edge and failing edge of sequential When reverse energization, i.e., failing edge is sent in the rising edge capacitance pen for receiving sequential, is sent in the failing edge capacitance pen for receiving sequential Rising edge, the quantity of electric charge detected are -2*C2*Vpen；As one of capacitance pen in the rising edge and failing edge for receiving sequential When generating reverse energization later, i.e., failing edge is sent in the rising edge capacitance pen for receiving sequential, in the failing edge electricity for receiving sequential Hold pen and do not generate excitation, alternatively, excitation is not generated in the rising edge capacitance pen for receiving sequential, in the failing edge capacitance for receiving sequential Pen sends rising edge, and the quantity of electric charge detected is-C2*Vpen.

The quantity of electric charge that above-mentioned five kinds of situation RX are detected is respectively：0,2C2*Vpen, C2*Vpen, -2C2*Vpen and-C2* The data that Vpen, i.e. capacitance pen are transmitted to touch screen are respectively 0 ,+2 ,+1, -2 and -1, for example, as shown in Figure 5.

S103, capacitance pen emit the first pumping signal, so that receiving pole is carried out according to the first pumping signal of ordered pair when receiving Decoding is to obtain data to be transmitted.

Specifically, the receiving pole of touch screen obtains transmission data according to the first pumping signal received, that is, passes through detection The data that the quantity of electric charge parsing capacitance pen arrived transmits.

In the related art, when capacitance pen is to touch screen transmission data, usually capacitance pen sends binary system, i.e., and 0 or 1 Two states (as shown in Figure 6).And the data transmission method between the capacitance pen and touch screen of the embodiment of the present invention is to combine to touch The receives frequency (receiving sequential) for touching screen RX carries out corresponding positive incentive or reverse energization, in this way in a data (one Position data, binary range is 0,1, and metric range is 0~90 numbers) on can transmit -1,0,1 three into The multi-systems data such as system even -2, -1,0,1,2 quinarys.Same 2048 precision needs 11, and ternary with binary system 7 (3^7=2187) are needed, and quinary only needs 5 (5^5=3125), is illustrated in figure 755 binary data Waveform, the result read from figure are 2, -1, -2,0,1, can add 2 with each when touch screen parses, become 41023, conversion It is exactly 2638 at 10 systems.As it can be seen that transmitting identical data, the required data bit of multi-system greatly reduces.Reduce data Position means that capacitance pen can transmit these data with the less time, and this period is shorter, and capacitance pen is in touch screen Sliding stroke is fewer, and data transmission precision is higher.Data transmission between the capacitance pen and touch screen of the embodiment of the present invention Method, in transmission data, the time is shorter when transmission data, by position limited it is small (capacitance pen can move on the touchscreen, Data bits is longer, and the time for transmitting needs is more, and the displacement of capacitance pen on the touchscreen is bigger, capacitance in moving process The capacitive coupling of pen and touch screen can change, wherein the variation of capacitance size and distance dependent, this capacitance can lead to signal not Stablize, the corrupt data for making touch screen receive), the probability for losing data is also relatively small, and saves the time, improves frame Frequently, to improve the use feeling of user.

Data transmission method between the capacitance pen and touch screen of the embodiment of the present invention, capacitance pen obtain data to be transmitted, Capacitance pen generates the first pumping signal according to the reception sequential of receiving pole in data to be transmitted and touch screen and emits, so as to receive Pole is decoded according to the first pumping signal of ordered pair when receiving to obtain data to be transmitted, and capacitance pen generates the first pumping signal When, it is encoded using multi-system (e.g., ternary, quinary), reduces the time of data transmission, improve data transmission essence Degree, to which the user experience is improved.

In order to realize above-described embodiment, the invention also provides a kind of data transmission systems.

Fig. 8 is the schematic diagram of data transmission system according to an embodiment of the invention.As shown in figure 8, the present invention is implemented The data transmission system of example, including：Capacitance pen 10 and touch screen 20.

Wherein, capacitance pen 10 is used to obtain data to be transmitted, and according to receiving pole in data to be transmitted and touch screen 20 It receives sequential and generates the first pumping signal, and the first pumping signal of transmitting；Touch screen 20 is used to receive the first pumping signal, and It is decoded according to the first pumping signal of ordered pair when receiving to obtain data to be transmitted.

Specifically, capacitance pen 10 obtains data to be transmitted according to user to the operation of pen tip.

In one embodiment of the invention, touch screen 20 is specifically used for emitting the second pumping signal by emitter；Electricity Hold pen 10 to be specifically used for generating first according to the reception sequential of receiving pole in the second pumping signal, data to be transmitted and touch screen 20 Pumping signal.

In one embodiment of the invention, the sequential of the second pumping signal is identical as sequential is received.I.e. when touch screen 20 Emitter TX when emitting the second pumping signal, the reception sequential of receiving pole RX is synchronous.

Specifically, the detection method of mutual capacitance screen (i.e. touch screen 20) in the related technology is introduced first below.When When finger or capacitance pen 10 are placed on touch screen 20, capacitive coupling relation such as Fig. 3 institutes of touch screen 20 and finger or capacitance pen 10 Show.When capacitance pen 10 is placed on touch screen 20, capacitance pen 10 is just and the emitter TX on touch screen 20 and receiving pole RX forms coupling Conjunction relationship, as shown in Figure 3.The waveform that the TX of touch screen 20 is sent generates excitation by C1 to RX, is produced to capacitance pen 10 by C3 Raw excitation, the signal that capacitance pen 10 is sent then are coupled to RX by C2.When TX emits excitation waveform, the reception sequential of internal RX It is synchronous.When TX, which is encouraged, sends rising edge, RX sequential is positive energize, and RX can detect the variable quantity forward direction of C1 at this time, electricity Lotus amount is C1*Vtx；When TX, which is encouraged, sends failing edge, RX sequential is negative energize, and negative energize is exactly reverse energization, because rising Just on the contrary, if it is positive energize, the quantity of electric charge is exactly-C1*Vtx for edge and failing edge, and just now positive energize when quantity of electric charge C1* Vtx addition results are 0, do not measure and, if it is negative energize, the quantity of electric charge is exactly-(- C1*Vtx), i.e. C1*Vtx, is finally detected As a result it is exactly that the variable quantity encouraged twice is allowed to add up, quantity of electric charge 2*C1*Vtx.Variable quantity and signal-to-noise ratio are improved in this way.

In one embodiment of the invention, capacitance pen 10 passes through ternary encoding transmission data with touch screen 20, wherein When capacitance pen 10 does not generate excitation after the driving pulse for receiving the second pumping signal, capacitance pen 10 is passed to touch screen 20 Defeated data are 0；When capacitance pen 10 generated after receiving the driving pulse of the second pumping signal it is same with the second pumping signal It is+1 to the data that when excitation, capacitance pen 10 is transmitted to touch screen 20；And when capacitance pen 10 is receiving the second pumping signal Driving pulse after when generating with the second pumping signal reverse energization, data that capacitance pen 10 transmit to touch screen 20 are -1.

Specifically, excitation is not generated after receiving the driving pulse of the second pumping signal of TX transmittings when capacitance pen 10 When, that is, it is always maintained at high level or low level, then the rising edge and failing edge in the second pumping signal all only have C1 chargings, C2 does not charge, then the quantity of electric charge that the receiving pole RX of touch screen 20 is detected is 2*C1*Vtx；When capacitance pen 10 is receiving TX On capacitance pen 10 is sent when generating isotropic excitation after the driving pulse of the second pumping signal of transmitting, i.e. when TX sends rising edge Edge is risen, C1 and C2 charge, then the quantity of electric charge size for the isotropic excitation that rising edge detects is exactly C1*Vtx+C2*Vpen, TX The quantity of electric charge that RX is detected when sending failing edge is similarly C1*Vtx+C2*Vpen, then the result of last RX detections is exactly 2* C1*Vtx+2*C2*Vpen；When capacitance pen 10 generates reversely after receiving the driving pulse of the second pumping signal of TX transmittings When excitation, i.e. capacitance pen 10 sends failing edge when TX sends rising edge, and the quantity of electric charge that at this moment RX is detected is C1*Vtx-C2* Capacitance pen 10 sends rising edge when Vpen, TX send failing edge, and the quantity of electric charge at this moment detected is also C1*Vtx-C2*Vpen, and two Secondary detection accumulated result is exactly 2*C1*Vtx-2*C2*Vpen.

It can be seen that capacitance pen 10 is not encouraged with TX and detected value is 2*C1*Vtx when encouraging, when isotropic excitation is 2*C1* Vtx+2*C2*Vpen is 2*C1*Vtx-2*C2*Vpen when reverse energization.The data of RX detections gone out are it finds that isotropic excitation When data become larger, data become smaller when reverse energization, and data are constant when without encouraging.In this way, can tell capacitance pen 10 to The data that touch screen 20 transmits are 0 ,+1 or -1, for example, as shown in Figure 4.

In one embodiment of the invention, capacitance pen 10 passes through quinary encoding transmission data with touch screen 20, wherein When capacitance pen 10 does not generate excitation after receiving the rising edge of driving pulse of the second pumping signal and failing edge, alternatively, When rising edge and failing edge generate positive incentive and reverse energization respectively, capacitance pen 10 transmits capacitance pen 10 to touch screen 20 Data are 0；When capacitance pen 10 generates just after receiving the rising edge of driving pulse of the second pumping signal and failing edge It is+2 to the data that when excitation, capacitance pen 10 is transmitted to touch screen 20；When capacitance pen 10 is receiving swashing for the second pumping signal It encourages when generating positive incentive after one in the rising edge and failing edge of pulse, the data that capacitance pen 10 is transmitted to touch screen 20 It is+1；Reversely swash when capacitance pen 10 generates after receiving the rising edge of driving pulse of the second pumping signal and failing edge When encouraging, the data that capacitance pen 10 is transmitted to touch screen 20 are -2；And when capacitance pen 10 is receiving swashing for the second pumping signal It encourages when generating reverse energization after one in the rising edge and failing edge of pulse, the data that capacitance pen 10 is transmitted to touch screen 20 It is -1.

Specifically, when capacitance pen 10 after receiving the rising edge of driving pulse of the second pumping signal and failing edge not Excitation is generated, that is, high level or low level are always maintained at, then the rising edge and failing edge in the second pumping signal all only have C1 charges, then the quantity of electric charge that RX is detected is 2*C1*Vtx, alternatively, capacitance pen 10 generates just respectively in rising edge and failing edge To when excitation and reverse energization, capacitance pen 10 generates positive incentive (the i.e. transmission of capacitance pen 10 when TX sends rising edge in rising edge Rising edge) when the quantities of electric charge that detect of RX be C1*Vtx+C2*Vpen, capacitance pen 10 generates reverse energization (i.e. TX hairs in failing edge Capacitance pen 10 sends rising edge when sending failing edge) when the quantities of electric charge that detect of RX be C1*Vtx-C2*Vpen, then last detection As a result be exactly C1*Vtx+C2*Vpen add C1*Vtx-C2*Vpen, i.e. 2*C1*Vtx, alternatively, capacitance pen 10 rising edge and under Drop along when generating reverse energization and positive incentive respectively, and similarly, last testing result is that C1*Vtx-C2*Vpen adds C1* Vtx+C2*Vpen and 2*C1*Vtx；When capacitance pen 10 is receiving the rising edge of driving pulse of the second pumping signal under When drop generates positive incentive after, i.e. capacitance pen 10 sends rising edge, electricity when TX sends failing edge when TX sends rising edge Hold pen 10 and send failing edge, then the quantity of electric charge that RX is detected is 2C1*Vtx+2C2*Vpen；When capacitance pen 10 is receiving When generating positive incentive after one in the rising edge and failing edge of the driving pulse of two pumping signals, i.e. TX sends rising edge When capacitance pen 10 send rising edge, TX send failing edge when capacitance pen 10 do not generate excitation (i.e. capacitance pen 10 holding high level or Person's low level) or TX when sending rising edge capacitance pen 10 do not generate excitation, capacitance pen 10 sends decline when TX sends failing edge Edge, the quantity of electric charge that RX is detected are 2C1*Vtx+C2*Vpen；When capacitance pen 10 is in the driving pulse for receiving the second pumping signal Rising edge and failing edge after generate reverse energization when, i.e. TX send rising edge when capacitance pen 10 send failing edge, TX hair Capacitance pen 10 sends rising edge when sending failing edge, and the quantity of electric charge that RX is detected is 2C1*Vtx-2C2*Vpen；When capacitance pen 10 exists It receives when generating reverse energization after one in the rising edge and failing edge of the driving pulse of the second pumping signal, i.e. TX hairs Capacitance pen 10 sends failing edge when sending rising edge, and capacitance pen 10 does not generate excitation when TX sends failing edge, rises alternatively, TX is sent Along when capacitance pen 10 do not generate excitation, capacitance pen 10 sends rising edge when TX sends failing edge, and the quantity of electric charge that RX is detected is 2C1*Vtx-C2*Vpen。

The quantity of electric charge that above-mentioned five kinds of situation RX are detected is respectively：2*C1*Vtx、2C1*Vtx+2C2*Vpen、2C1*Vtx+ The data difference that C2*Vpen, 2C1*Vtx-2C2*Vpen and 2C1*Vtx-C2*Vpen, i.e. capacitance pen 10 are transmitted to touch screen 20 For 0 ,+2 ,+1, -2 and -1, for example, as shown in Figure 5.

What is illustrated in above example is that the case where TX excitations capacitance pen follows TX transmitting excitations in the same direction or reversely is (right respectively Answer two kinds of 10 coordinate detection modes of capacitance pen of reaction type and Exciting-simulator system, reaction type refer to the TX of capacitance plate send out a rising edge or Capacitance pen 10, which receives this and encourages and follow, after the excitation of failing edge sends out pumping signal, and the pumping signal sent out as needed may be used What can be sent with TX is in the same direction or reversed along signal.Exciting-simulator system is then that capacitance plate itself does not send signal, is only used as recipient, and pen It is autonomous to send signal.The sequential and phase of signal are all appointed in advance).The variable quantity actually really differentiated only has C2's Capacitance, so another detection method is that TX is not encouraged.Inside sequential is fixed when chip detects, if TX is not encouraged only There is capacitance pen 10 to be sent in the same direction or if reverse energization according to fixed time sequence, detected value would not be influenced by C1；When in the same direction Charge is 2*C2*Vpen；Charge is -2*C2*Vpen when reversed, and capacitance pen 10 is 0 not the result detected when encouraging, you can with Tell+1, -1 and 0.In this way, precision higher.The case where when not emitting pumping signal to the emitter TX of touch screen 20 below (capacitance pen 10 realizes ternary coding and quinary coding) is described in detail.

In another embodiment of the present invention, the emitter of touch screen 20 does not emit pumping signal, capacitance pen 10 with touch Screen 20 is touched by ternary encoding transmission data, wherein when capacitance pen 10 does not generate excitation during the pulse for receiving sequential, The data that capacitance pen 10 is transmitted to touch screen 20 are 0；When capacitance pen 10 generates isotropic excitation during the pulse for receiving sequential, The data that capacitance pen 10 is transmitted to touch screen 20 are+1；And reversely swash when capacitance pen 10 generates during the pulse for receiving sequential When encouraging, the data that capacitance pen 10 is transmitted to touch screen 20 are -1.

Specifically, when capacitance pen 10 does not generate excitation during the pulse for receiving sequential, the quantity of electric charge that RX is detected is 0；When capacitance pen 10 generates isotropic excitation during the pulse for receiving sequential, i.e., sent out in the rising edge capacitance pen 10 for receiving sequential Rising edge is sent, sends failing edge in the failing edge capacitance pen 10 for receiving sequential, the quantity of electric charge that RX is detected is 2*C2*Vpen；When When capacitance pen 10 generates reverse energization during the pulse for receiving sequential, i.e., in the case where the rising edge capacitance pen 10 for receiving sequential is sent Edge is dropped, sends rising edge in the failing edge capacitance pen 10 for receiving sequential, the quantity of electric charge that RX is detected is -2*C2*Vpen.

The quantity of electric charge that above-mentioned three kinds of situation RX are detected is respectively：0,2*C2*Vpen and -2*C2*Vpen, i.e. capacitance pen 10 The data transmitted to touch screen 20 are respectively 0 ,+1 and -1, for example, as shown in Figure 4.

In another embodiment of the present invention, the emitter of touch screen 20 does not emit pumping signal, capacitance pen 10 with touch Screen 20 is touched by quinary encoding transmission data, wherein when capacitance pen 10 is not generated in the rising edge and failing edge for receiving sequential Excitation, alternatively, when capacitance pen 10 generates positive incentive and reverse energization respectively during rising edge and failing edge, capacitance pen 10 to The data that touch screen 20 transmits are 0；When capacitance pen 10 generates positive incentive after receiving the rising edge and failing edge of sequential When, the data that capacitance pen 10 is transmitted to touch screen 20 are+2；When capacitance pen 10 is in the rising edge and failing edge for receiving sequential When generating positive incentive after one, the data that capacitance pen 10 is transmitted to touch screen 20 are+1；And when capacitance pen 10 is receiving When generating reverse energization after the rising edge and failing edge of sequential, the data that capacitance pen 10 is transmitted to touch screen 20 are -2；With And when capacitance pen 10 receive sequential rising edge and failing edge in one after generate reverse energization when, capacitance pen 10 to touch The data for touching 20 transmission of screen are -1.

Specifically, when capacitance pen 10 receive sequential rising edge and failing edge do not generate excitation, alternatively, capacitance pen 10 exists When generating positive incentive and reverse energization during rising edge and failing edge respectively, i.e., when receiving the rising edge and failing edge of sequential Capacitance pen 10 does not generate excitation, or sends rising edge in the rising edge capacitance pen 10 for receiving sequential, in the decline for receiving sequential Rising edge is sent along capacitance pen 10, or failing edge is sent in the rising edge capacitance pen 10 for receiving sequential, in the case where receiving sequential Drop sends failing edge along capacitance pen 10, and the quantity of electric charge detected is 0；When capacitance pen 10 is in the rising edge and failing edge for receiving sequential When generating positive incentive later, i.e., rising edge is sent in the rising edge capacitance pen 10 for receiving sequential, in the decline for receiving sequential Failing edge is sent along capacitance pen 10, the quantity of electric charge detected is 2*C2*Vpen；When capacitance pen 10 receive sequential rising edge and When generating positive incentive after one in failing edge, i.e., rising edge is sent in the rising edge capacitance pen 10 for receiving sequential, connect The failing edge capacitance pen 10 of time receiving sequence does not generate excitation, alternatively, excitation is not generated in the rising edge capacitance pen 10 for receiving sequential, The failing edge capacitance pen 10 for receiving sequential sends failing edge, and the quantity of electric charge detected is C2*Vpen；When capacitance pen 10 is when receiving When generating reverse energization after the rising edge and failing edge of sequence, i.e., sends and decline in the rising edge capacitance pen 10 for receiving sequential Edge sends rising edge in the failing edge capacitance pen 10 for receiving sequential, and the quantity of electric charge detected is -2*C2*Vpen；When capacitance pen 10 When generating reverse energization after one in the rising edge and failing edge for receiving sequential, i.e., in the rising edge capacitance for receiving sequential Pen 10 sends failing edge, and excitation is not generated in the failing edge capacitance pen 10 for receiving sequential, alternatively, in the rising edge electricity for receiving sequential Hold pen 10 and do not generate excitation, sends rising edge in the failing edge capacitance pen 10 for receiving sequential, the quantity of electric charge detected is-C2* Vpen。

The quantity of electric charge that above-mentioned five kinds of situation RX are detected is respectively：0,2C2*Vpen, C2*Vpen, -2C2*Vpen and-C2* The data that Vpen, i.e. capacitance pen 10 are transmitted to touch screen 20 are respectively 0 ,+2 ,+1, -2 and -1, for example, as shown in Figure 5.

More specifically, 20 receiving pole RX of touch screen obtains transmission data according to the first pumping signal received, that is, pass through The data that the quantity of electric charge parsing capacitance pen 10 detected transmits.

In the related art, when capacitance pen is to touch screen transmission data, usually capacitance pen sends binary system, i.e., and 0 or 1 Two states (as shown in Figure 6).And the data transmission system of the embodiment of the present invention be in conjunction with touch screen 20RX receives frequency (i.e. Receive sequential) corresponding positive incentive or reverse energization are carried out, in this way in a data (data of a position, binary model It is 0,1 to enclose, and metric range is 0~90 numbers) on can transmit -1,0,1 ternary even -2, -1,0,1,2 five The multi-systems data such as system.Same 2048 precision needs 11 with binary system, and ternary needs 7 (3^7=2187), And quinary only needs 5 (5^5=3125), is illustrated in figure 7 the waveform of 55 binary datas, the knot read from figure Fruit is 2, -1, -2,0,1, can add 2 with each when touch screen parses, become 41023, it is exactly 2638 to be converted to 10 systems.It can See, transmit identical data, the required data bit of multi-system greatly reduces.Reduce data bit and means that capacitance pen 10 can To transmit these data with the less time, this period is shorter, and capacitance pen 10 is fewer in the sliding stroke of touch screen 20, Data transmission precision is higher.The data transmission system of the embodiment of the present invention, in transmission data, the time is shorter when transmission data, Limited that small (capacitance pen 10 can move on touch screen 20, and data bits is longer, and the time for transmitting needs gets over by position More, displacement of the capacitance pen 10 on touch screen 20 is bigger, the capacitive coupling meeting of capacitance pen 10 and touch screen 20 in moving process Variation, wherein the variation of capacitance size and distance dependent, this capacitance can lead to jitter, and touch screen 20 is made to receive Corrupt data), the probability for losing data is also relatively small, and save the time, improve frame frequency, to improve making for user With impression.

The data transmission system of the embodiment of the present invention, capacitance pen for obtain data to be transmitted and according to data to be transmitted and The reception sequential of receiving pole generates the first pumping signal and emits in touch screen, and touch screen is used to receive the first pumping signal, and It is decoded according to the first pumping signal of ordered pair when receiving to obtain data to be transmitted, when capacitance pen generates the first pumping signal, It is encoded using multi-system (e.g., ternary, quinary), reduces the time of data transmission, improve data transmission precision, To which the user experience is improved.

In order to realize above-described embodiment, the invention also provides a kind of capacitance pens.

Fig. 9 is the structural schematic diagram of capacitance pen according to an embodiment of the invention.As shown in figure 9, the embodiment of the present invention Capacitance pen 10 include：Acquisition module 11, generation module 12 and transmission module 13.

Wherein, acquisition module 11 is for obtaining data to be transmitted；Generation module 12 is used for according to data to be transmitted and touch The reception sequential of receiving pole generates the first pumping signal in screen；Transmission module 13 is for emitting the first pumping signal.

Specifically, acquisition module 11 is used to obtain data to be transmitted to the operation of pen tip according to user.

In one embodiment of invention, transmission module 13 is additionally operable to receive the second pumping signal of touch screen transmitting, In, the sequential of the second pumping signal is identical as sequential is received (i.e. when the emitter TX of touch screen emits the second pumping signal, to be connect The reception sequential for receiving pole RX is synchronous)；Generation module 12 is specifically used for：According to the second pumping signal, data to be transmitted and touch The reception sequential for touching receiving pole in screen generates the first pumping signal.

Specifically, the detection method of mutual capacitance screen (i.e. touch screen) in the related technology is introduced first below.Work as hand When finger or capacitance pen 10 are put on the touchscreen, the capacitive coupling relation of touch screen and finger or capacitance pen 10 is as shown in Figure 3.Capacitance When pen 10 is put on the touchscreen, capacitance pen 10 is just and the emitter TX on touch screen and receiving pole RX forms coupled relation, such as Fig. 3 It is shown.The waveform that the TX of touch screen is sent generates excitation by C1 to RX, and excitation, capacitance pen 10 are generated to capacitance pen 10 by C3 The signal of transmission is then coupled to RX by C2.When TX emits excitation waveform, the reception sequential of internal RX is synchronous.When TX swashs When encouraging transmission rising edge, RX sequential is positive energize, and RX can detect the variable quantity forward direction of C1 at this time, quantity of electric charge C1*Vtx；When When TX excitations send failing edge, RX sequential is negative energize, and negative energize is exactly reverse energization, because of rising edge and failing edge just phase Instead, if it is positive energize, the quantity of electric charge is exactly-C1*Vtx, and just now positive energize when quantity of electric charge C1*Vtx addition results be 0, survey It does not come out, if it is negative energize, the quantity of electric charge is exactly-(- C1*Vtx), i.e. C1*Vtx, and the result finally detected is exactly to allow swash twice The variable quantity encouraged adds up, quantity of electric charge 2*C1*Vtx.Variable quantity and signal-to-noise ratio are improved in this way.

In one embodiment of invention, generation module 12 is compiled when generating the first pumping signal by ternary Code, wherein when transmission module 13 is not when generation module 12 generates excitation after the driving pulse for receiving the second pumping signal, The data that transmission module 13 is transmitted to touch screen are 0；When transmission module 13 the driving pulse for receiving the second pumping signal it When generation module 12 is generated with the second pumping signal isotropic excitation afterwards, the data that transmission module 13 is transmitted to touch screen are+1；With And when generation module 12 generates and the second pumping signal transmission module 13 after receiving the driving pulse of the second pumping signal When reverse energization, the data that transmission module 13 is transmitted to touch screen are -1.

Specifically, when transmission module 13 receive TX transmitting the second pumping signal driving pulse after generation module 12 when not generating excitation, that is, high level or low level is always maintained at, then in the rising edge and failing edge of the second pumping signal All only have C1 chargings, C2 not to charge, then the quantity of electric charge that the receiving pole RX of touch screen is detected is 2*C1*Vtx；Work as transmission module 13 when generation module 12 generates isotropic excitation after receiving the driving pulse of the second pumping signal of TX transmittings, i.e. TX is sent Capacitance pen sends rising edge when rising edge, and C1 and C2 charge, then the quantity of electric charge size for the isotropic excitation that rising edge detects It is exactly C1*Vtx+C2*Vpen, the quantity of electric charge that RX is detected when TX sends failing edge is similarly C1*Vtx+C2*Vpen, then The result of last RX detections is exactly 2*C1*Vtx+2*C2*Vpen；When transmission module 13 is in the second excitation letter for receiving TX transmittings Number driving pulse after generation module 12 generate reverse energization when, i.e. TX send rising edge when capacitance pen send failing edge, this When the quantities of electric charge that detect of RX be C1*Vtx-C2*Vpen, capacitance pen sends rising edge when TX sends failing edge, at this moment detects The quantity of electric charge also be C1*Vtx-C2*Vpen, twice detect accumulated result be exactly 2*C1*Vtx-2*C2*Vpen.

It can be seen that capacitance pen is not encouraged with TX and detected value is 2*C1*Vtx when encouraging, when isotropic excitation is 2*C1* Vtx+2*C2*Vpen is 2*C1*Vtx-2*C2*Vpen when reverse energization.The data of RX detections gone out are it finds that isotropic excitation When data become larger, data become smaller when reverse energization, and data are constant when without encouraging.In this way, can tell capacitance pen to touch The data for touching screen transmission are 0 ,+1 or -1, for example, as shown in Figure 4.

In one embodiment of invention, generation module 12 is compiled when generating the first pumping signal by quinary Code, wherein when transmission module 13 generates mould after receiving the rising edge of driving pulse of the second pumping signal and failing edge Block 12 does not generate excitation, alternatively, generation module 12 when rising edge and failing edge generate positive incentive and reverse energization respectively, passes The data that defeated module 13 is transmitted to touch screen are 0；When transmission module 13 is receiving the upper of the driving pulse of the second pumping signal When generation module 12 generates positive incentive after liter edge and failing edge, the data that transmission module 13 is transmitted to touch screen are+2； Mould is generated after transmission module 13 is in one in receiving the rising edge and failing edge of driving pulse of the second pumping signal When block 12 generates positive incentive, the data that transmission module 13 is transmitted to touch screen are+1；When transmission module 13 is receiving second When generation module 12 generates reverse energization after the rising edge and failing edge of the driving pulse of pumping signal, transmission module 13 to The data of touch screen transmission are -2；And when transmission module 13 in the rising edge that receives the driving pulse of the second pumping signal and When generation module 12 generates reverse energization after one in failing edge, the data that transmission module 13 is transmitted to touch screen are -1.

Specifically, when transmission module 13 is after receiving the rising edge of driving pulse of the second pumping signal and failing edge When generation module 12 does not generate excitation, that is, it is always maintained at high level or low level, then in the rising edge of the second pumping signal All there was only C1 chargings with failing edge, then the quantities of electric charge that detect of RX are 2*C1*Vtx, alternatively, generation module 12 in rising edge and When failing edge generates positive incentive and reverse energization respectively, generation module 12 generates positive incentive (i.e. in TX transmissions in rising edge Rise along when capacitance pen send rising edge) when the quantities of electric charge that detect of RX be C1*Vtx+C2*Vpen, generation module 12 is in failing edge The quantity of electric charge that RX is detected when generating reverse energization (i.e. capacitance pen sends rising edge when TX sends failing edge) is C1*Vtx-C2* Vpen, then last testing result is exactly that C1*Vtx+C2*Vpen adds C1*Vtx-C2*Vpen, i.e. 2*C1*Vtx, alternatively, raw At module 12 when rising edge and failing edge generate reverse energization and positive incentive respectively, similarly, last testing result is C1* Vtx-C2*Vpen adds C1*Vtx+C2*Vpen and 2*C1*Vtx；When receiving the driving pulse of the second pumping signal Capacitance pen, which is sent, when generation module 12 generates positive incentive after rising edge and failing edge, i.e. when TX sends rising edge rises Edge, capacitance pen sends failing edge when TX sends failing edge, then the quantity of electric charge that RX is detected is 2C1*Vtx+2C2*Vpen；When Generation module 12 generates positive sharp after receiving one in the rising edge and failing edge of the driving pulse of the second pumping signal When encouraging, i.e. capacitance pen sends rising edge when TX sends rising edge, and capacitance pen does not generate excitation (i.e. capacitance pen when TX sends failing edge Keep high level either low level) or TX when sending rising edge capacitance pen do not generate excitation, capacitance pen when TX transmission failing edges Failing edge is sent, the quantity of electric charge that RX is detected is 2C1*Vtx+C2*Vpen；When in the driving pulse for receiving the second pumping signal Rising edge and failing edge after generation module 12 capacitance pen is sent when generating reverse energization, i.e. when TX sends rising edge declines Edge, capacitance pen sends rising edge when TX sends failing edge, and the quantity of electric charge that RX is detected is 2C1*Vtx-2C2*Vpen；When receiving When generation module 12 generates reverse energization after to one in the rising edge and failing edge of the driving pulse of the second pumping signal, That is capacitance pen sends failing edge when TX sends rising edge, and capacitance pen does not generate excitation when TX sends failing edge, alternatively, in TX transmissions Rise along when capacitance pen do not generate excitation, capacitance pen sends rising edge when TX sends failing edge, and the quantity of electric charge that RX is detected is 2C1* Vtx-C2*Vpen。

The quantity of electric charge that above-mentioned five kinds of situation RX are detected is respectively：2*C1*Vtx、2C1*Vtx+2C2*Vpen、2C1*Vtx+ The data that C2*Vpen, 2C1*Vtx-2C2*Vpen and 2C1*Vtx-C2*Vpen, i.e. capacitance pen are transmitted to touch screen are respectively 0 ,+ 2 ,+1, -2 and -1, for example, as shown in Figure 5.

What is illustrated in above example is that the case where TX excitations capacitance pen follows TX transmitting excitations in the same direction or reversely is (right respectively Answer two kinds of capacitance pen coordinate detection modes of reaction type and Exciting-simulator system, reaction type refer to the TX of capacitance plate send out a rising edge or under It drops capacitance pen after the excitation on edge and receives this and encourage and follow and send out pumping signal, the pumping signal sent out as needed may be with TX is sent in the same direction or reversed along signal.Exciting-simulator system is then that capacitance plate itself does not send signal, is only used as recipient, and pen is autonomous Send signal.The sequential and phase of signal are all appointed in advance).The variable quantity actually really differentiated only has the capacitance of C2 Value, so another detection method is that TX is not encouraged.Inside sequential is fixed when chip detects, if TX does not encourage only electricity Hold pen to send in the same direction or if reverse energization according to fixed time sequence, detected value would not be influenced by C1；Charge is when in the same direction 2*C2*Vpen；Charge is -2*C2*Vpen when reversed, and capacitance pen is 0 not the result detected when encouraging, you can with tell+ 1, -1 and 0.In this way, precision higher.The case where when not emitting pumping signal to the emitter TX of touch screen below, (capacitance pen was realized Ternary encodes and quinary coding) it is described in detail.

In another embodiment of the present invention, when the emitter of touch screen does not emit pumping signal, generation module 12 It is encoded by ternary generating the first pumping signal, wherein during pulse of the generation module 12 in reception sequential not When generating excitation, the data that transmission module 13 is transmitted to touch screen are 0；When generation module 12 produces during the pulse for receiving sequential When raw isotropic excitation, the data that transmission module 13 is transmitted to touch screen are+1；And when generation module 12 is in the arteries and veins for receiving sequential When generating reverse energization during punching, the data that transmission module 13 is transmitted to touch screen are -1.

Specifically, when generation module 12 does not generate excitation during the pulse for receiving sequential, the quantity of electric charge that RX is detected It is 0；When generating isotropic excitation during the pulse for receiving sequential, i.e., sends and rise in the rising edge capacitance pen for receiving sequential Edge, and failing edge is sent in the failing edge capacitance pen for receiving sequential, the quantity of electric charge that RX is detected is 2*C2*Vpen；When receiving When generation module 12 generates reverse energization during the pulse of sequential, i.e., failing edge is sent in the rising edge capacitance pen for receiving sequential, And rising edge is sent in the failing edge capacitance pen for receiving sequential, the quantity of electric charge that RX is detected is -2*C2*Vpen.

The quantity of electric charge that above-mentioned three kinds of situation RX are detected is respectively：0,2*C2*Vpen and -2*C2*Vpen, i.e. capacitance pen to The data of touch screen transmission are respectively 0 ,+1 and -1, for example, as shown in Figure 4.

In another embodiment of the present invention, when the emitter of touch screen does not emit pumping signal, generation module 12 Generate the first pumping signal encoded by quinary, wherein when generation module 12 receive sequential rising edge and under Drop is not along excitation is generated, alternatively, generation module 12 generates positive incentive and reverse energization respectively during rising edge and failing edge When, the data that transmission module 13 is transmitted to touch screen are 0；When generation module 12 is after receiving the rising edge and failing edge of sequential When generating positive incentive, the data that transmission module 13 is transmitted to touch screen are+2；When generation module 12 is receiving the upper of sequential When generating positive incentive after one in liter edge and failing edge, the data that transmission module 13 is transmitted to touch screen are+1；And When generation module 12 generates reverse energization after the rising edge and failing edge for receiving sequential, transmission module 13 is to touch screen The data of transmission are -2；And when generation module 12 receive sequential rising edge and failing edge in one after generate reversely When excitation, the data that transmission module 13 is transmitted to touch screen are -1.

Specifically, when not generating excitation in the rising edge and failing edge generation module 12 for receiving sequential, alternatively, in rising edge When generating positive incentive and reverse energization respectively with generation module during failing edge 12, i.e., in rising edge and the decline for receiving sequential It does not generate excitation along capacitance pen, or rising edge is sent in the rising edge capacitance pen for receiving sequential, in the failing edge for receiving sequential Capacitance pen sends rising edge, or sends failing edge in the rising edge capacitance pen for receiving sequential, in the failing edge electricity for receiving sequential Hold pen and send failing edge, the quantity of electric charge that RX is detected is 0；When the generation module 12 after receiving the rising edge and failing edge of sequential When generating positive incentive, i.e., rising edge is sent in the rising edge capacitance pen for receiving sequential, in the failing edge capacitance for receiving sequential Pen sends failing edge, and the quantity of electric charge that RX is detected is 2*C2*Vpen；As one in the rising edge and failing edge that receive sequential When generation module 12 generates positive incentive later, i.e., rising edge is sent in the rising edge capacitance pen for receiving sequential, receiving sequential Failing edge capacitance pen do not generate excitation, alternatively, excitation is not generated in the rising edge capacitance pen for receiving sequential, in reception sequential Failing edge capacitance pen sends failing edge, and the quantity of electric charge that RX is detected is C2*Vpen；When electricity is in rising edge and the decline for receiving sequential When generation module 12 generates reverse energization after, i.e., failing edge is sent in the rising edge capacitance pen for receiving sequential, received The failing edge capacitance pen of sequential sends rising edge, and the quantity of electric charge that RX is detected is -2*C2*Vpen；When in the rising for receiving sequential When generation module 12 generates reverse energization after one in edge and failing edge, i.e., sent in the rising edge capacitance pen for receiving sequential Failing edge does not generate excitation in the failing edge capacitance pen for receiving sequential, alternatively, not generated in the rising edge capacitance pen for receiving sequential Excitation sends rising edge in the failing edge capacitance pen for receiving sequential, and the quantity of electric charge that RX is detected is-C2*Vpen.

The quantity of electric charge that above-mentioned five kinds of situation RX are detected is respectively：0,2C2*Vpen, C2*Vpen, -2C2*Vpen and-C2* The data that Vpen, i.e. capacitance pen are transmitted to touch screen are respectively 0 ,+2 ,+1, -2 and -1, for example, as shown in Figure 5.

In the related art, when capacitance pen is to touch screen transmission data, usually capacitance pen sends binary system, i.e., and 0 or 1 Two states (as shown in Figure 6).And the capacitance pen of the embodiment of the present invention is to combine the receives frequency of touch screen RX (when receiving Sequence) carry out corresponding positive incentive or reverse energization, in this way a data (data of a position, binary range is 0, 1, metric range is 0~90 numbers) on can transmit -1,0,1 ternary even -2, -1,0,1,2 quinarys etc. Multi-system data.Same 2048 precision, with binary system need 11, and ternary need 7 (3^7=2187), and five into System only needs 5 (5^5=3125), is illustrated in figure 7 the waveform of 55 binary datas, the result read from figure is 2, -1, -2,0,1,2 can be added with each when touch screen parses, become 41023, it is exactly 2638 to be converted to 10 systems.As it can be seen that Identical data are transmitted, the required data bit of multi-system greatly reduces.Reduce data bit and means that capacitance pen can be used The less time transmits these data, and this period is shorter, and capacitance pen is fewer in the sliding stroke of touch screen, data transmission Precision is higher.The capacitance pen of the embodiment of the present invention, in transmission data, the time is shorter when transmission data, is limited by position It is small that (capacitance pen can move on the touchscreen, and data bits is longer, and the time for transmitting needs is more, and capacitance pen is on the touchscreen Displacement it is bigger, the capacitive coupling of capacitance pen and touch screen can change in moving process, wherein capacitance size and distance have Close, the variation of this capacitance can lead to jitter, the corrupt data for making touch screen receive), lose the probability of data It is relatively small, and the time is saved, frame frequency is improved, to improve the use feeling of user.

The capacitance pen of the embodiment of the present invention obtains data to be transmitted by acquisition module, and generation module is according to number to be transmitted The first pumping signal is generated according to the reception sequential with receiving pole in touch screen, transmission module then emits the first pumping signal, generates When module generates the first pumping signal, is encoded using multi-system (e.g., ternary, quinary), reduce data transmission Time improves data transmission precision, to which the user experience is improved.

In order to realize above-described embodiment, the invention also provides a kind of touch screens.

Figure 10 is the structural schematic diagram of touch screen according to an embodiment of the invention.As shown in Figure 10, the present invention is implemented The touch screen 20 of example, including：Emitter 21, receiving pole 22 and decoder module 23.

Wherein, receiving pole 22 is used to receive the first pumping signal of capacitance pen transmitting.

The first pumping signal of ordered pair is decoded to be passed to obtain when decoder module 23 is used for the reception according to receiving pole 22 Transmission of data.

In one embodiment of the invention, emitter 21 be additionally operable to transmitting the second pumping signal so that capacitance pen according to The reception sequential of second pumping signal, data to be transmitted and receiving pole 22 generates the first pumping signal.

In one embodiment of the invention, the sequential of the second pumping signal is identical as sequential is received.I.e. when touch screen When emitter 21 emits the second pumping signal, the reception sequential of receiving pole 22 is synchronous.

Specifically, i.e. the transmitting of emitter 21 excitation, capacitance pen follow the feelings of the excitation of the transmitting of emitter 21 in the same direction or reversely Condition.

More specifically, when capacitance pen and touch screen are by ternary encoding transmission data, when capacitance pen is receiving second When not generating excitation after the driving pulse of pumping signal, the data that capacitance pen is transmitted to touch screen are the 0 (receiving pole of touch screen 22 quantities of electric charge detected are 2*C1*Vtx)；When capacitance pen generated after receiving the driving pulse of the second pumping signal with When the second pumping signal isotropic excitation, data that capacitance pen is transmitted to touch screen are that+1 (receiving pole 22 of touch screen detects The quantity of electric charge is 2*C1*Vtx+2*C2*Vpen)；And when capacitance pen produces after receiving the driving pulse of the second pumping signal When raw and the second pumping signal reverse energization, the data that capacitance pen is transmitted to touch screen are -1 (detection of receiving pole 22 of touch screen The quantity of electric charge arrived is 2*C1*Vtx-2*C2*Vpen).

In addition, when capacitance pen and touch screen are by quinary encoding transmission data, the receiving pole 22 of touch screen detects The quantity of electric charge with reference to being discussed in detail in preceding embodiment, details are not described herein.It is illustrated in figure 755 binary data Waveform, the result read from figure are 2, -1, -2,0,1, and decoder module 23 can add 2 when being parsed to the result with each, Become 41023, it is exactly 2638 to be converted to 10 systems.

In another embodiment of the present invention, emitter 21 does not emit excitation.Capacitance pen is according to the reception of receiving pole 22 Sequential generates the first pumping signal.

Specifically, when emitter 21 does not emit excitation, capacitance pen with touch screen by ternary encoding transmission data when, when When capacitance pen does not generate excitation during the pulse for receiving sequential, (touch screen connects for 0 for data that capacitance pen transmit to touch screen 0) it is to receive the quantity of electric charge that pole 22 detects；When capacitance pen receive sequential pulse during generate isotropic excitation when, capacitance pen to The data of touch screen transmission are+1 (quantity of electric charge that the receiving pole 22 of touch screen detects is 2*C2*Vpen)；And work as capacitance pen When generating reverse energization during the pulse for receiving sequential, the data that capacitance pen is transmitted to touch screen are -1 (reception of touch screen The quantity of electric charge that pole 22 detects is -2*C2*Vpen).

In addition, when capacitance pen and touch screen are by quinary encoding transmission data, the receiving pole 22 of touch screen detects The quantity of electric charge with reference to being discussed in detail in preceding embodiment, details are not described herein.It is illustrated in figure 755 binary data Waveform, the result read from figure are 2, -1, -2,0,1, and decoder module 23 can add 2 when being parsed to the result with each, Become 41023, it is exactly 2638 to be converted to 10 systems.

The touch screen of the embodiment of the present invention, receiving pole receive the first pumping signal of capacitance pen transmitting, decoder module then root According to receiving pole reception when the first pumping signal of ordered pair be decoded to obtain data to be transmitted, wherein the of capacitance pen transmitting One pumping signal is encoded using multi-system (e.g., ternary, quinary), and decoder module then passes through the electricity of detection coupled capacitor The first pumping signal of lotus amount pair is decoded, and to obtain data to be transmitted, reduces the time of data transmission, improves data biography Semen deposition degree, to which the user experience is improved.

In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (20)

1. the data transmission method between a kind of capacitance pen and touch screen, which is characterized in that include the following steps：

Capacitance pen obtains data to be transmitted；

The capacitance pen generates the first pumping signal according to the reception sequential of receiving pole in the data to be transmitted and touch screen；With And

The capacitance pen emits first pumping signal, so that the receiving pole swashs according to described in ordered pair when the reception first Signal is encouraged to be decoded to obtain the data to be transmitted；

Before the capacitance pen generates first pumping signal, the emitter of the touch screen emits the second pumping signal, The capacitance pen generates the first pumping signal according to the reception sequential of receiving pole in the data to be transmitted and touch screen and specifically wraps It includes：

The capacitance pen is given birth to according to the reception sequential of receiving pole in second pumping signal, the data to be transmitted and touch screen At first pumping signal.

2. the data transmission method between capacitance pen as described in claim 1 and touch screen, which is characterized in that described second swashs The sequential for encouraging signal is identical as the reception sequential.

3. the data transmission method between capacitance pen as claimed in claim 2 and touch screen, which is characterized in that the capacitance pen Pass through ternary encoding transmission data with the touch screen, wherein

When the capacitance pen does not generate excitation after the driving pulse for receiving second pumping signal, the capacitance pen The data transmitted to the touch screen are 0；

When the capacitance pen generates and second pumping signal after receiving the driving pulse of second pumping signal When isotropic excitation, the data that the capacitance pen is transmitted to the touch screen are+1；And

When the capacitance pen generates and second pumping signal after receiving the driving pulse of second pumping signal When reverse energization, the data that the capacitance pen is transmitted to the touch screen are -1.

4. the data transmission method between capacitance pen as claimed in claim 2 and touch screen, which is characterized in that the capacitance pen Pass through quinary encoding transmission data with the touch screen, wherein

When the capacitance pen does not generate after receiving the rising edge and failing edge of driving pulse of second pumping signal Excitation, alternatively, the capacitance pen is when the rising edge and failing edge generate positive incentive and reverse energization respectively, the capacitance The data that pen is transmitted to the touch screen are 0；

When the capacitance pen generates after receiving the rising edge and failing edge of driving pulse of second pumping signal When positive incentive, the data that the capacitance pen is transmitted to the touch screen are+2；

When the capacitance pen one in receiving the rising edge and failing edge of driving pulse of second pumping signal it When generating positive incentive afterwards, the data that the capacitance pen is transmitted to the touch screen are+1；

When the capacitance pen generates after receiving the rising edge and failing edge of driving pulse of second pumping signal When reverse energization, the data that the capacitance pen is transmitted to the touch screen are -2；And

When the capacitance pen one in receiving the rising edge and failing edge of driving pulse of second pumping signal it When generating reverse energization afterwards, the data that the capacitance pen is transmitted to the touch screen are -1.

5. the data transmission method between capacitance pen as described in claim 1 and touch screen, which is characterized in that the touch screen Emitter do not emit pumping signal.

6. the data transmission method between capacitance pen as claimed in claim 5 and touch screen, which is characterized in that the capacitance pen Pass through ternary encoding transmission data with the touch screen, wherein

When the capacitance pen does not generate excitation during the pulse for receiving sequential, the capacitance pen is passed to the touch screen Defeated data are 0；

When the capacitance pen generates isotropic excitation during the pulse for receiving sequential, the capacitance pen is to the touch screen The data of transmission are+1；And

When the capacitance pen generates reverse energization during the pulse for receiving sequential, the capacitance pen is to the touch screen The data of transmission are -1.

7. the data transmission method between capacitance pen as claimed in claim 5 and touch screen, which is characterized in that the capacitance pen Pass through quinary encoding transmission data with the touch screen, wherein

When the capacitance pen receive sequential rising edge and failing edge do not generate excitation, alternatively, the capacitance pen is on described When generating positive incentive and reverse energization respectively during rising edge and failing edge, data that the capacitance pen is transmitted to the touch screen It is 0；

When the capacitance pen generates positive incentive after the rising edge and failing edge for receiving sequential, the capacitance pen The data transmitted to the touch screen are+2；

It is described when one of the capacitance pen in the rising edge and failing edge for receiving sequential generates positive incentive later The data that capacitance pen is transmitted to the touch screen are+1；And

When the capacitance pen generates reverse energization after the rising edge and failing edge for receiving sequential, the capacitance pen The data transmitted to the touch screen are -2；And

It is described when one of the capacitance pen in the rising edge and failing edge for receiving sequential generates reverse energization later The data that capacitance pen is transmitted to the touch screen are -1.

8. a kind of data transmission system, which is characterized in that including：Capacitance pen and touch screen, wherein

The capacitance pen, for obtaining data to be transmitted, and according to receiving pole in the data to be transmitted and the touch screen It receives sequential and generates the first pumping signal, and transmitting first pumping signal；

The touch screen, for receiving first pumping signal, and according to the first pumping signal described in ordered pair when the reception It is decoded to obtain the data to be transmitted；

The touch screen is specifically used for emitting the second pumping signal by emitter；

The capacitance pen is specifically used for according to receiving pole in second pumping signal, the data to be transmitted and touch screen It receives sequential and generates first pumping signal.

9. data transmission system as claimed in claim 8, which is characterized in that the sequential of second pumping signal connects with described Time receiving sequence is identical.

10. data transmission system as claimed in claim 9, which is characterized in that the capacitance pen passes through three with the touch screen Scale coding transmission data, wherein

When the capacitance pen does not generate excitation after the driving pulse for receiving second pumping signal, the capacitance pen The data transmitted to the touch screen are 0；

When the capacitance pen generates and second pumping signal after receiving the driving pulse of second pumping signal When isotropic excitation, the data that the capacitance pen is transmitted to the touch screen are+1；And

When the capacitance pen generates and second pumping signal after receiving the driving pulse of second pumping signal When reverse energization, the data that the capacitance pen is transmitted to the touch screen are -1.

11. data transmission system as claimed in claim 9, which is characterized in that the capacitance pen passes through five with the touch screen Scale coding transmission data, wherein

When the capacitance pen does not generate after receiving the rising edge and failing edge of driving pulse of second pumping signal Excitation, alternatively, the capacitance pen is when the rising edge and failing edge generate positive incentive and reverse energization respectively, the capacitance The data that pen is transmitted to the touch screen are 0；

When the capacitance pen generates after receiving the rising edge and failing edge of driving pulse of second pumping signal When positive incentive, the data that the capacitance pen is transmitted to the touch screen are+2；

When the capacitance pen one in receiving the rising edge and failing edge of driving pulse of second pumping signal it When generating positive incentive afterwards, the data that the capacitance pen is transmitted to the touch screen are+1；

When the capacitance pen generates after receiving the rising edge and failing edge of driving pulse of second pumping signal When reverse energization, the data that the capacitance pen is transmitted to the touch screen are -2；And

When the capacitance pen one in receiving the rising edge and failing edge of driving pulse of second pumping signal it When generating reverse energization afterwards, the data that the capacitance pen is transmitted to the touch screen are -1.

12. data transmission system as claimed in claim 8, which is characterized in that the emitter of the touch screen does not emit excitation Signal, the capacitance pen pass through ternary encoding transmission data with the touch screen, wherein

When the capacitance pen does not generate excitation during the pulse for receiving sequential, the capacitance pen is passed to the touch screen Defeated data are 0；

When the capacitance pen generates isotropic excitation during the pulse for receiving sequential, the capacitance pen is to the touch screen The data of transmission are+1；And

When the capacitance pen generates reverse energization during the pulse for receiving sequential, the capacitance pen is to the touch screen The data of transmission are -1.

13. data transmission system as claimed in claim 8, which is characterized in that the emitter of the touch screen does not emit excitation Signal, the capacitance pen pass through quinary encoding transmission data with the touch screen, wherein

When the capacitance pen receive sequential rising edge and failing edge do not generate excitation, alternatively, the capacitance pen is on described When generating positive incentive and reverse energization respectively during rising edge and failing edge, data that the capacitance pen is transmitted to the touch screen It is 0；

When the capacitance pen generates positive incentive after the rising edge and failing edge for receiving sequential, the capacitance pen The data transmitted to the touch screen are+2；

It is described when one of the capacitance pen in the rising edge and failing edge for receiving sequential generates positive incentive later The data that capacitance pen is transmitted to the touch screen are+1；And

When the capacitance pen generates reverse energization after the rising edge and failing edge for receiving sequential, the capacitance pen The data transmitted to the touch screen are -2；And

It is described when one of the capacitance pen in the rising edge and failing edge for receiving sequential generates reverse energization later The data that capacitance pen is transmitted to the touch screen are -1.

14. a kind of capacitance pen, which is characterized in that including：

Acquisition module, for obtaining data to be transmitted；

Generation module is believed for generating the first excitation according to the reception sequential of receiving pole in the data to be transmitted and touch screen Number；And

Transmission module, for emitting first pumping signal；

The transmission module is additionally operable to receive the second pumping signal of the touch screen transmitting, wherein second pumping signal Sequential it is identical as the reception sequential；

The generation module, is specifically used for：According to receiving pole in second pumping signal, the data to be transmitted and touch screen Reception sequential generate first pumping signal.

15. capacitance pen as claimed in claim 14, which is characterized in that the generation module is specifically used for compiling by ternary Code generates first pumping signal, wherein

When the transmission module after receiving the driving pulse of second pumping signal generation module do not generate it is sharp When encouraging, the data that the transmission module is transmitted to the touch screen are 0；

When the generation module generates and institute the transmission module after receiving the driving pulse of second pumping signal When stating the second pumping signal isotropic excitation, the data that the transmission module is transmitted to the touch screen are+1；And

When the generation module generates and institute the transmission module after receiving the driving pulse of second pumping signal When stating the second pumping signal reverse energization, the data that the transmission module is transmitted to the touch screen are -1.

16. capacitance pen as claimed in claim 14, which is characterized in that the generation module is specifically used for compiling by quinary Code generates first pumping signal, wherein

When the transmission module is described after receiving the rising edge and failing edge of driving pulse of second pumping signal Generation module does not generate excitation, alternatively, the generation module generates positive incentive and anti-respectively in the rising edge and failing edge It is 0 to the data that when excitation, the transmission module is transmitted to the touch screen；

When the transmission module is described after receiving the rising edge and failing edge of driving pulse of second pumping signal When generation module generates positive incentive, the data that the transmission module is transmitted to the touch screen are+2；

As one of the transmission module in receiving the rising edge and failing edge of driving pulse of second pumping signal When the generation module generates positive incentive later, the data that the transmission module is transmitted to the touch screen are+1；

When the transmission module is described after receiving the rising edge and failing edge of driving pulse of second pumping signal When generation module generates reverse energization, the data that the transmission module is transmitted to the touch screen are -2；And

As one of the transmission module in receiving the rising edge and failing edge of driving pulse of second pumping signal When the generation module generates reverse energization later, the data that the transmission module is transmitted to the touch screen are -1.

17. capacitance pen as claimed in claim 14, which is characterized in that when the emitter of the touch screen does not emit pumping signal When, the generation module is specifically used for generating first pumping signal by ternary coding, wherein

When the generation module does not generate excitation during the pulse for receiving sequential, the transmission module is to the touch The data of screen transmission are 0；

When the generation module generates isotropic excitation during the pulse for receiving sequential, the transmission module is touched to described The data for touching screen transmission are+1；And

When the generation module generates reverse energization during the pulse for receiving sequential, the transmission module is touched to described The data for touching screen transmission are -1.

18. capacitance pen as claimed in claim 14, which is characterized in that when the emitter of the touch screen does not emit pumping signal When, the generation module is specifically used for generating first pumping signal by quinary coding, wherein

When the generation module receive sequential rising edge and failing edge do not generate excitation, alternatively, the generation module is in institute When generating positive incentive and reverse energization during stating rising edge and failing edge respectively, the transmission module is transmitted to the touch screen Data be 0；

When the generation module generates positive incentive after the rising edge and failing edge for receiving sequential, the transmission The data that module is transmitted to the touch screen are+2；

When one of the generation module in the rising edge and failing edge for receiving sequential generates positive incentive later, institute It is+1 to state the data that transmission module is transmitted to the touch screen；And

When the generation module generates reverse energization after the rising edge and failing edge for receiving sequential, the transmission The data that module is transmitted to the touch screen are -2；And

When one of the generation module in the rising edge and failing edge for receiving sequential generates reverse energization later, institute It is -1 to state the data that transmission module is transmitted to the touch screen.

19. a kind of touch screen, which is characterized in that including：

Emitter；

Receiving pole, the first pumping signal for receiving capacitance pen transmitting；

Decoder module, it is to be passed to obtain for being decoded according to the first pumping signal described in ordered pair when the reception of the receiving pole Transmission of data；

The emitter is additionally operable to the second pumping signal of transmitting, so that the capacitance pen is according to second pumping signal, described The reception sequential of receiving pole generates first pumping signal in data to be transmitted and touch screen.

20. touch screen as claimed in claim 19, which is characterized in that when the sequential of second pumping signal is with the reception Sequence is identical.