CN107969152A - Signal transmitting method, signal resolution method, active pen and touch screen - Google Patents

Signal transmitting method, signal resolution method, active pen and touch screen Download PDF

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Publication number
CN107969152A
CN107969152A CN201680000902.2A CN201680000902A CN107969152A CN 107969152 A CN107969152 A CN 107969152A CN 201680000902 A CN201680000902 A CN 201680000902A CN 107969152 A CN107969152 A CN 107969152A
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CN
China
Prior art keywords
frequency
signal
passed
information
demodulation
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CN201680000902.2A
Other languages
Chinese (zh)
Inventor
戴石礼
Original Assignee
深圳市汇顶科技股份有限公司
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Priority to PCT/CN2016/096869 priority Critical patent/WO2018035843A1/en
Publication of CN107969152A publication Critical patent/CN107969152A/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545Pens or stylus
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K7/00Modulating pulses with a continuously-variable modulating signal
    • H03K7/02Amplitude modulation, i.e. PAM
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K7/00Modulating pulses with a continuously-variable modulating signal
    • H03K7/06Frequency or rate modulation, i.e. PFM or PRM

Abstract

The present invention relates to electronic information technical field, discloses a kind of signal transmitting method, signal resolution method, active pen and touch screen.In the present invention, signal transmitting method includes:The active pen carries out frequency modulation(PFM) to information to be passed, to generate information FM signal to be passed;The active pen launches the information FM signal to be passed.A kind of signal resolution method, a kind of active pen and a kind of touch screen are additionally provided in the present invention.The problem of signal transmitting method, signal resolution method, active pen and touch screen provided by the invention, realize and refresh rate are substantially improved, and solve to an actively signal transmitting and screen end detection complex time, and information transmission takes.

Description

Signal transmitting method, signal resolution method, active pen and touch screen

Technical field

The present invention relates to electronic information technical field, more particularly to a kind of signal transmitting method, signal resolution method, active Pen and stylus.

Background technology

Existing active pen generally carries pressure detecting function, by the size of the pressure sensor senses pressure of nib, Pressure information is passed to by screen end by certain mode again.The transfer mode of pressure information has many kinds, has straight by bluetooth Connect and pressure information is transmitted to complete machine, such as apple pencil;Also have and led to again by the nib modulation certain to pressure information progress Cross screen end to be received, such as the active pen of surface pro 4.The recipient at screen end is transmitted to for nib signal modulation pressure Method, screen is passed to necessary not only for by pressure information, it is also necessary in addition makes a call to a signal in nib to allow screen end to carry out nib Positioning.Therefore the active pen of pressure information is transmitted by nib signal, the signal of its nib transmitting is usually requiring two parts, A part is used for transmitting pressure, and a part is used for positioning nib coordinate.

At present, the stamp sequential of the common a kind of active pen of in the market, as shown in Figure 1:Its nib positions consolidating with 2.4ms Determine the coordinate stamp signal of frequency, its pressure uses the coded modulation of amplitude modulation, since it uses binary coded modulation, Information can only be transmitted by 1 and 0 assembly coding, to reach 1024 grades of pressure needs to encode using the pressure of 10, then Handled plus others, the stamp cycle of whole pen needs 5ms.

But in process of the present invention is realized, inventor has found that at least there are the following problems in the prior art:Common master Stamp of starting writing sequential is under conditions of pen detection is only supported, refresh rate reaches 200Hz reluctantly, if to support finger and style of writing control If detecting at the same time, refresh rate can significantly decline.The method of reseptance at screen end is transmitted to for nib signal modulation pressure, generally For, nib signal and screen end signal are different, and so processing can cause the circuit of the tip of the brushstyle of a writing or painting and sequential complex, and need The sequential wanted nib signal sequence and shield end signal collection is preferably synchronous, otherwise can lossing signal, and the two signals Conversion can cause waste of time, and refresh rate is difficult to be improved.

The content of the invention

The purpose of embodiment of the present invention is to provide a kind of signal transmitting, signal resolution, active pen and touch screen, passes through Simplify an actively stamp and the sequential of screen end detection, reduce the transmission time of information to be passed, refresh rate is substantially improved.

In order to solve the above technical problems, embodiments of the present invention provide a kind of signal transmitting method, applied to actively Pen, specifically includes:The active pen carries out frequency modulation(PFM) to information to be passed, to generate information FM signal to be passed;It is described Active pen launches the information FM signal to be passed.

Embodiments of the present invention additionally provide a kind of signal resolution method, applied to touch screen, specifically include:It is described to touch Control screen carries out frequency demodulation to the information FM signal to be passed of reception, to obtain the demodulation of the information FM signal to be passed Frequency;Wherein, the information to be passed is emitted by active pen by the signal transmitting method of the present invention;The touch screen root According to the default correspondence of frequency, demodulation frequency and information to be passed, the corresponding information to be passed of the frequency, demodulation frequency is obtained;It is described to touch Control screen carries out amplitude demodulation according to an at least predeterminated frequency to the information FM signal to be passed, to obtain the letter to be passed Cease the solution modulation of FM signal;The touch screen calculates the pen tip position of the active pen according to the solution modulation.

Embodiments of the present invention additionally provide a kind of active pen, specifically include:Frequency modulation(PFM) module, for being treated to described Transmit information and carry out frequency modulation(PFM), to generate information FM signal to be passed;Signal emission module, for by the letter to be passed Breath FM signal is launched.

Embodiments of the present invention additionally provide a kind of touch screen, specifically include:Signal receiving module, for receiving actively The information FM signal to be passed that pen is emitted by the signal transmitting method of the present invention;Frequency demodulation module, is connected to institute State signal receiving module;The frequency demodulation module is used to carry out frequency demodulation to the information FM signal to be passed, with To the frequency, demodulation frequency of the information FM signal to be passed;Data obtaining module, is connected to the frequency demodulation module;The letter Cease acquisition module and be used for default correspondence according to frequency, demodulation frequency and information to be passed, obtain that the frequency, demodulation frequency is corresponding to be treated Transmit information;Amplitude demodulation module, is connected to the signal receiving module;The amplitude demodulation module is used for pre- according at least one If frequency carries out amplitude demodulation to the information FM signal to be passed, to obtain the demodulation of the information FM signal to be passed Amplitude;Position computation module, is connected to the amplitude demodulation module;The position computation module is used for according to the solution modulation Calculate the pen tip position of the active pen.

Embodiment of the present invention in terms of existing technologies, active pen by by information to be passed carry out frequency modulation(PFM), The FM signal of the information to be passed of generation is periodically launched, so that the process of an actively signal transmitting is simplified, Improve active pen and shield the efficiency and refresh rate of client information transmission.

In addition, information to be passed includes the pen point pressure of the active pen or the function key pressing signal of the active pen. These information to be passed are passed to by touch screen by active pen so that touch screen can get specific behaviour after the demodulation Make information.

In addition, when the information to be passed is pen point pressure, the modulating frequency of the information FM signal to be passed with The pen point pressure is one-to-one mapping relations.Pass through this one-to-one mapping relations, there is provided modulating frequency with A kind of specific implementation of pen point pressure correspondence, to obtain the modulating frequency corresponding to information FM signal to be passed.

In addition, the number of the predeterminated frequency is 1, and the predeterminated frequency is the frequency, demodulation frequency;It is described to be passed Information FM signal includes the Part I signal received successively and Part II signal;The touch screen is to the Part I Signal carries out frequency demodulation, to obtain the frequency, demodulation frequency of the information FM signal to be passed;The touch screen is according to the solution Frequency modulation rate carries out amplitude demodulation to the Part II signal, to obtain the solution modulation of the information FM signal to be passed. Frequency demodulation and amplitude demodulation, Ke Yifen are carried out by the Part I signal to being sequentially received and Part II signal respectively The frequency, demodulation frequency for not obtaining information FM signal to be passed conciliates modulation.

In addition, the number of the predeterminated frequency is one, and the predeterminated frequency is the JieDuHuaYu II Decoction band of the touch screen Centre frequency., can be fast by the way that predeterminated frequency to be set to the centre frequency of JieDuHuaYu II Decoction band when the number of predeterminated frequency is one Amplitude demodulation fastly is carried out to the FM signal of active pen transmitting, then can calculate the pen tip position coordinate of active pen, from And reduce calculation amount and the requirement to hardware performance.

In addition, the number of the predeterminated frequency is multiple, multiple predeterminated frequencies belong to the JieDuHuaYu II Decoction band of the touch screen, Amplitude demodulation is carried out respectively to the FM signal of active pen transmitting respectively using multiple predeterminated frequencies, multiple solutions can be respectively obtained Modulation, the predeterminated frequency of solution modulation maximum is optimal frequency, selects this frequency to carry out amplitude demodulation and utilizes this demodulation Amplitude calculates the pen tip position of active pen, can improve the accuracy of an actively pen tip position coordinate.

Brief description of the drawings

Fig. 1 is the schematic diagram of the stamp signal that active pen is generated using amplitude modulation binary coding according to prior art;

Fig. 2 is the flow chart of the signal transmitting method of first embodiment according to the present invention;

Fig. 3 is showing for the information FM signal to be passed of the signal transmitting method generation of first embodiment according to the present invention It is intended to;

Fig. 4 is the flow chart of the signal resolution method of second embodiment according to the present invention;

Fig. 5 is the flow chart of the signal resolution method of the 3rd embodiment according to the present invention;

Fig. 6 is the block diagram of the active pen of the 4th embodiment according to the present invention;

Fig. 7 is the block diagram of the touch screen of the 5th embodiment according to the present invention;

Fig. 8 is the block diagram of the touch screen of sixth embodiment according to the present invention.

Embodiment

To make the object, technical solutions and advantages of the present invention clearer, each reality below in conjunction with attached drawing to the present invention The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention, Many ins and outs are proposed in order to make reader more fully understand the application.But even if without these ins and outs and base Many variations and modification in following embodiment, can also realize the application technical solution claimed.

The first embodiment of the present invention is related to a kind of signal transmitting method, is mainly used in active pen.It is as shown in Figure 2 The flow chart of signal transmitting method according to first embodiment.

First, in step 201, active pen carries out frequency modulation(PFM) to information to be passed, generates information frequency modulation letter to be passed Number.

Specifically, if detecting information to be passed, the information to be passed detected is subjected to frequency modulation(PFM), generation Information FM signal to be passed.

Such as user carries out writing operation using active pen in mobile phone screen, at this moment active pen has detected to be passed Information needs to transmit, such as information to be passed is pen point pressure F.Pen point pressure is carried out frequency modulation(PFM) by active pen, obtains one Information FM signal to be passed.Fig. 3 show the schematic diagram of information FM signal to be passed.It is actual, information to be passed with Modulating frequency is one-to-one mapping relations, and the mapping relations can be stored in advance in active pen.Information to be passed is, for example, Pen point pressure F, preferably, pen point pressure can be in a linear relationship with modulating frequency, right not limited to this.Wherein, information to be passed In except can be pen point pressure size, the function that can start writing based on key pressing information etc., present embodiment does not do this Any restrictions.In addition, in practical applications, other multi-systems can also be used to be adjusted according to the operation in this mode of frequency regulation Frequency obtains corresponding information FM signal to be passed.

Then, in step 202, active pen launches information FM signal to be passed.

Such as by above-mentioned steps 201, the FM signal that can all obtain is performed every time, and active pen will every time frequently The FM signal that rate is modulated is launched.

Present embodiment by the way that within a cycle, active pen only needs to launch a kind of information FM signal to be passed, Screen end is allowd to obtain the specifying information carried in information to be passed, such as the size of pen point pressure or active with this signal The particular content of function key pressing information, area is carried out without information to be passed and nib coordinate information are divided into two parts Divide transmission, so as to simplify the signal transmitting of active pen.

Second embodiment of the present invention is related to a kind of signal resolution method, is mainly used in touching included by electronic equipment Control screen, electronic equipment is, for example, mobile phone and tablet computer, as shown in Figure 4.

In step 401, the received information FM signal to be passed of touch screen docking carries out frequency demodulation, to be passed to obtain Pass the frequency, demodulation frequency of information FM signal.

Specifically, when detecting information to be passed, it is necessary to confirm whether the information to be passed is that active pen is launched Information FM signal to be passed, if the information FM signal to be passed of active pen transmitting, then to the information frequency modulation to be passed Signal carries out parsing operation;If not the information FM signal to be passed of active pen transmitting, then continue to have detected whether actively The information FM signal to be passed of pen transmitting.

Such as touch screen is detected actively by the coupled capacitor between the induction channels on screen and an active nib The information FM signal f to be passed of pen transmitting, then be demodulated the information FM signal to be passed in a manner of frequency demodulation, Obtain a frequency, demodulation frequency M corresponding with information FM signal f to be passed.

In step 402, touch screen obtains frequency, demodulation frequency according to the default correspondence of frequency, demodulation frequency and information to be passed Corresponding information to be passed.

The default correspondence of frequency, demodulation frequency and information to be passed is stored in touch screen in advance.Such as according to the solution Frequency modulation rate and the default correspondence of information to be passed obtain, and the corresponding information to be passed of frequency, demodulation frequency M is F, i.e. touch screen The information to be passed received from active pen is F.

In step 403, touch screen carries out amplitude demodulation according to predeterminated frequency to information FM signal to be passed, to obtain The solution modulation of information FM signal to be passed.

Specifically, the number of predeterminated frequency is 1 in present embodiment, and predeterminated frequency is frequency, demodulation frequency.When successively After receiving the information FM signal to be passed including Part I signal and Part II signal, touch screen believes Part I Number carry out frequency demodulation, obtain the frequency, demodulation frequency of information FM signal to be passed;Then Part II is believed according to frequency, demodulation frequency Number carry out amplitude demodulation, obtain the solution modulation of information FM signal to be passed.

In step 404, touch screen calculates the pen tip position of active pen according to solution modulation.

Specifically, ITO laterally and on vertical is arranged respectively on the touch screen of electronic equipment (indium tin oxide is partly led Body) passage, formed latticed.ITO passages receive line equivalent to signal one by one, when active pen is put into some position of touch screen When putting, its signal launched will be arrived by more ITO channel receptions of present position.It is nearer from an actively nib signal launch point ITO passages on the signal that receives it is bigger, otherwise it is smaller.By demodulating the signal amplitude received on each ITO passage Size, the place of laterally or vertically upper signal amplitude maximum is accurately calculated by interpolation, it is possible to active pen pen is calculated The position coordinates of point.

In present embodiment, since active pen using same signal transmits pen point pressure and coordinate information, because This touch screen need not strictly distinguish signal type, it is only necessary to pass through the induction channels on screen and the actively coupling between a nib Capacitance, gets continuous information FM signal to be passed, by being demodulated to obtain information to be passed according to frequency, demodulation frequency Content, according to the default mapping relations in touch screen, accurately obtains the particular content of information to be passed, simplifies the inspection of screen end Survey sequential;And when the pressure information of equal series is transmitted under identical hardware condition, passed compared to existing amplitude-modulation coding Pass, improve the accuracy of information transfer efficiency and signal resolution so that the time of whole information interaction periodicity shortens, lifting brush New rate.

Third embodiment of the present invention is related to a kind of signal resolution method, is mainly used in touching included by electronic equipment Control screen, electronic equipment is, for example, mobile phone and tablet computer, and the master of present embodiment and second embodiment is distinguished as:Second implements In mode, the number of predeterminated frequency only has one, and predeterminated frequency is frequency, demodulation frequency;In present embodiment, predeterminated frequency can be with For one, or multiple, when predeterminated frequency is one, a predeterminated frequency is the centre frequency of JieDuHuaYu II Decoction band;When pre- If frequency is multiple, predeterminated frequency belongs to the JieDuHuaYu II Decoction band of touch screen, and one of predeterminated frequency is JieDuHuaYu II Decoction band Centre frequency, specific operating process are as shown in Figure 5.

Wherein, step 501,502 identical with the step 201 in Fig. 2, step 202, it is intended to by touch screen to receiving The information FM signal to be passed arrived carries out frequency demodulation, to obtain the frequency, demodulation frequency of information FM signal to be passed, here not Repeat again.In present embodiment, at least one predeterminated frequency is stored in touch screen, touch screen is according at least one default frequency Rate carries out amplitude demodulation to information FM signal to be passed.

In step 503, touch screen according to a solution at least predeterminated frequency to information FM signal to be passed into line amplitude solution Adjust, to obtain the solution modulation of information FM signal to be passed.

Specifically, at least one predeterminated frequency is stored in touch screen.When the number of predeterminated frequency is 1, preset Frequency is the centre frequency of the JieDuHuaYu II Decoction band of touch screen, and touch screen carries out information FM signal to be passed according to the predeterminated frequency Amplitude demodulation, obtains the solution modulation of information FM signal to be passed.Such as only store one in advance in touch screen in advance If frequency, demodulation frequency, then the default frequency, demodulation frequency should be the centre frequency of touch screen JieDuHuaYu II Decoction band, and touch screen is according to center frequency Rate carries out amplitude demodulation to information FM signal f to be passed, obtains a solution modulation R.

, can be fast by the way that predeterminated frequency to be set to the centre frequency of JieDuHuaYu II Decoction band when the number of predeterminated frequency is one Amplitude demodulation fastly is carried out to the FM signal of active pen transmitting, then can calculate the pen tip position coordinate of active pen, from And reduce calculation amount and the requirement to hardware performance.

If the number of predeterminated frequency is multiple, multiple predeterminated frequencies belong to the JieDuHuaYu II Decoction band of touch screen, and wherein One predeterminated frequency is the centre frequency of JieDuHuaYu II Decoction band, other several predeterminated frequencies are the frequency near the centre frequency;Touch-control Screen carries out amplitude demodulation respectively according to each predeterminated frequency to information FM signal to be passed, obtains multiple solution modulations, Ran Houxuan The modulation of maximum solution is selected as the foundation for calculating nib coordinate.Such as 3 are prestored in touch screen and has been preset Frequency, demodulation frequency, such touch screen can according to this 3 predeterminated frequencies to information FM signal to be passed respectively into line amplitude solution Adjust, obtain 3 solution modulations, and the foundation for calculating nib coordinate is used as in a solution modulation by contrasting selection maximum.

Amplitude demodulation is carried out respectively to the FM signal of active pen transmitting respectively using multiple predeterminated frequencies, can be obtained respectively To multiple solution modulations, the predeterminated frequency of solution modulation maximum is optimal frequency, selects this frequency to carry out amplitude demodulation and profit The pen tip position of active pen is calculated with this solution modulation, the accuracy of an actively pen tip position coordinate can be improved.

It should be noted that JieDuHuaYu II Decoction band signified in present embodiment is the corresponding frequency, demodulation frequency scope of pressure limit.

Then, in step 504, touch screen calculates the pen tip position of active pen according to solution modulation.

Specifically, ITO passages laterally and on vertical are arranged respectively on the touch screen of electronic equipment, formed latticed. ITO passages receive line equivalent to signal one by one, and when active pen is put into some position of touch screen, the signal that it is launched is just It can be arrived by more ITO channel receptions of present position.From what is actively received on a nearer ITO passage of nib signal launch point Signal is bigger, otherwise smaller.By demodulating the signal amplitude size received on each ITO passage, accurately counted by interpolation Calculate the place of laterally or vertically upper signal amplitude maximum, it is possible to be calculated nib laterally and vertically on exact position.

In the present embodiment, due to carrying out amplitude demodulation to information FM signal to be passed according to predeterminated frequency, The acquisition of information to be passed and the calculating of pen tip position can be carried out synchronously, carried out on the parsing time reasonably multiple With so as to shorten the parsing time.Right present embodiment does not do this any restrictions.

The step of various methods divide above, be intended merely to describe it is clear, can be merged into when realizing a step or Some steps are split, are decomposed into multiple steps, as long as including identical logical relation, all protection domain in this patent It is interior;To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed Core design with flow is all in the protection domain of the patent.

Four embodiment of the invention is related to a kind of active pen, and concrete structure is as shown in Figure 6.

Active pen includes:Frequency modulation(PFM) module 601, signal emission module 602.

It should be noted that the active pen in present embodiment, is mainly used for coordinating with the intelligent terminal including touch screen Use, intelligent terminal is, for example, mobile phone, tablet computer.

Frequency modulation(PFM) module 601, for carrying out frequency modulation(PFM) to information to be passed, is believed with generating information frequency modulation to be passed Number;

Signal emission module 602, is connected to frequency modulation(PFM) module 601, and signal emission module 602 is used for information to be passed FM signal is launched.

It is not difficult to find that present embodiment is can be with the corresponding system embodiment of first embodiment, present embodiment First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment Effect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in In first embodiment.

It is noted that each module involved in present embodiment is logic module, and in practical applications, one A logic unit can be a part for a physical location or a physical location, can also be with multiple physics lists The combination of member is realized.In addition, in order to protrude the innovative part of the present invention, will not be with solving institute of the present invention in present embodiment The unit that the technical problem relation of proposition is less close introduces, but this is not intended that in present embodiment that there is no other single Member.

Fifth embodiment of the invention is related to a kind of touch screen, the touch screen in present embodiment, be primarily adapted for use in including The intelligent terminal of touch screen, intelligent terminal such as mobile phone and tablet computer.Concrete structure is as shown in fig. 7, touch screen includes:Signal Receiving module 701, frequency demodulation module 702, data obtaining module 703, amplitude demodulation module 704, position computation module 705.

Signal receiving module 701, the information tune to be passed emitted for receiving active pen according to signal transmitting method Frequency signal;

Frequency demodulation module 702, is connected to signal receiving module 701;Frequency demodulation module 702 is used for information to be passed FM signal carries out frequency demodulation, to obtain the frequency, demodulation frequency of information FM signal to be passed;

Data obtaining module 703, is connected to frequency demodulation module 702;Data obtaining module 703 is used for according to frequency, demodulation frequency With the default correspondence of information to be passed, the corresponding information to be passed of frequency, demodulation frequency is obtained;

Amplitude demodulation module 704, is connected to signal receiving module 701 and frequency demodulation module 702;Amplitude demodulation module 704 are used for according to information FM signal progress amplitude demodulation is transmitted, to obtain the solution modulation of information FM signal to be passed;

Touch screen in present embodiment is mainly used in default frequency number as one, and the predeterminated frequency is demodulation Frequency.

When predeterminated frequency is frequency, demodulation frequency, signal receiving module 701 is by the information FM signal to be passed received Part I signal is delivered to frequency demodulation module 702 and carries out frequency demodulation, obtains the JieDuHuaYu II Decoction of information FM signal to be passed Rate, then amplitude demodulation module 704 according to frequency, demodulation frequency to the Part II signal of information FM signal to be passed into line amplitude Demodulation, finally obtains the solution modulation of information FM signal to be passed, and the solution modulation is delivered to position computation module 705。

Position computation module 705, is connected to amplitude demodulation module 704;Position computation module 705 is used for according to solution modulation Calculate the pen tip position of active pen.

Since second embodiment is corresponded with present embodiment, present embodiment can be mutual with second embodiment It is engaged implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement second The attainable technique effect of institute can similarly be realized in the present embodiment in mode, no longer superfluous here in order to reduce repetition State.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.

Sixth embodiment of the invention is related to a kind of touch screen, the touch screen in present embodiment, be primarily adapted for use in including The intelligent terminal of touch screen, intelligent terminal such as mobile phone and tablet computer.The concrete structure of touch screen and in present embodiment The comprising modules of touch screen are similar in five embodiments, refer to Fig. 8, and the touch screen in present embodiment includes signal and receives mould Block 701, frequency demodulation module 702, data obtaining module 703, amplitude demodulation module 704, position computation module 705.

Signal receiving module 701, the information tune to be passed emitted for receiving active pen according to signal transmitting method Frequency signal;

Frequency demodulation module 702, is connected to signal receiving module 701;Frequency demodulation module 702 is used for information to be passed FM signal carries out frequency demodulation, to obtain the frequency, demodulation frequency of information FM signal to be passed;

Data obtaining module 703, is connected to frequency demodulation module 702;Data obtaining module 703 is used for according to frequency, demodulation frequency With the default correspondence of information to be passed, the corresponding information to be passed of frequency, demodulation frequency is obtained;

Amplitude demodulation module 704, is connected to signal receiving module 701;Amplitude demodulation module 704 is used for according to transmission information FM signal carries out amplitude demodulation, to obtain the solution modulation of information FM signal to be passed;

Position computation module 705, is connected to amplitude demodulation module 704;Position computation module 705 is used for according to solution modulation Calculate the pen tip position of active pen.

Touch screen in present embodiment is mainly used in predeterminated frequency number as one or more, and predeterminated frequency is one When a, a predeterminated frequency is the centre frequency of JieDuHuaYu II Decoction band;When predeterminated frequency is multiple, predeterminated frequency belongs to touch screen JieDuHuaYu II Decoction band, and one of predeterminated frequency be JieDuHuaYu II Decoction band centre frequency.

Since the predeterminated frequency in present embodiment is one or more frequencies of pre-selection storage, amplitude demodulation mould Block 704 is only connected with signal receiving module 701, the information FM signal to be passed that signal receiving module 701 will receive In be directly passed to amplitude demodulation module 704 to information FM signal to be passed carry out amplitude demodulation, finally obtain letter to be passed The solution modulation of FM signal is ceased, which is delivered to position computation module 705.

It is not difficult to find that present embodiment is can be with the 3rd corresponding system embodiment of embodiment, present embodiment 3rd embodiment is worked in coordination implementation.The relevant technical details mentioned in 3rd embodiment still have in the present embodiment Effect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in In 3rd embodiment.

It will be appreciated by those skilled in the art that realize that all or part of step in above-described embodiment method is to pass through Program instructs relevant hardware to complete, and the program storage is in a storage medium, including some instructions are used so that one A equipment (can be microcontroller, chip etc.) or processor (processor) perform each embodiment the method for the application All or part of step.And foregoing storage medium includes:USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey The medium of sequence code.

It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention, And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.

Claims (12)

1. a kind of signal transmitting method, it is characterised in that applied to active pen, the signal transmitting method includes:
The active pen carries out frequency modulation(PFM) to information to be passed, to generate information FM signal to be passed;
The active pen launches the information FM signal to be passed.
2. signal transmitting method according to claim 1, it is characterised in that the information to be passed includes the active pen Pen point pressure and/or the active pen function key pressing signal.
3. signal transmitting method according to claim 2, it is characterised in that when the information to be passed is pen point pressure When, modulating frequency and the pen point pressure of the information FM signal to be passed are one-to-one mapping relations.
A kind of 4. signal resolution method, it is characterised in that applied to touch screen, the signal resolution method includes:
The touch screen carries out frequency demodulation to the information FM signal to be passed of reception, to obtain the information frequency modulation to be passed The frequency, demodulation frequency of signal;Wherein, the information to be passed is by active pen letter as claimed in any of claims 1 to 3 Number launching technique emits;
The touch screen obtains that the frequency, demodulation frequency is corresponding to be treated according to the default correspondence of frequency, demodulation frequency and information to be passed Transmit information;
The touch screen carries out amplitude demodulation according to an at least predeterminated frequency to the information FM signal to be passed, to obtain State the solution modulation of information FM signal to be passed;
The touch screen calculates the pen tip position of the active pen according to the solution modulation.
5. signal resolution method according to claim 4, it is characterised in that the number of the predeterminated frequency is 1, and institute It is the frequency, demodulation frequency to state predeterminated frequency;
The information FM signal to be passed includes the Part I signal received successively and Part II signal;
The touch screen carries out frequency demodulation to the Part I signal, to obtain the solution of the information FM signal to be passed Frequency modulation rate;
The touch screen carries out amplitude demodulation according to the frequency, demodulation frequency to the Part II signal, described to be passed to obtain The solution modulation of information FM signal.
6. signal resolution method according to claim 4, it is characterised in that the number of the predeterminated frequency is one, and The predeterminated frequency is the centre frequency of the JieDuHuaYu II Decoction band of the touch screen.
7. signal resolution method according to claim 4, it is characterised in that the number of the predeterminated frequency is more to be multiple A predeterminated frequency belongs to the JieDuHuaYu II Decoction band of the touch screen, and one of predeterminated frequency is the center frequency of the JieDuHuaYu II Decoction band Rate.
8. a kind of active pen, it is characterised in that applied to the signal launch party described in any one in claim requirement 1 to 3 Method;The active pen includes:
Frequency modulation(PFM) module, for carrying out frequency modulation(PFM) to the information to be passed, to generate information FM signal to be passed;
Signal emission module, for the information FM signal to be passed to be launched.
A kind of 9. touch screen, it is characterised in that including:
Signal receiving module, for receiving active pen signal transmitting method hair as claimed in any of claims 1 to 3 The information FM signal to be passed shot out;
Frequency demodulation module, is connected to the signal receiving module;The frequency demodulation module is used for the information to be passed FM signal carries out frequency demodulation, to obtain the frequency, demodulation frequency of the information FM signal to be passed;
Data obtaining module, is connected to the frequency demodulation module;Described information acquisition module is used for according to frequency, demodulation frequency with treating The default correspondence of information is transmitted, obtains the corresponding information to be passed of the frequency, demodulation frequency;
Amplitude demodulation module, is connected to the signal receiving module;The amplitude demodulation module is used for according at least one default frequency Rate carries out amplitude demodulation to the information FM signal to be passed, to obtain the solution amplitude modulation of the information FM signal to be passed Degree;
Position computation module, is connected to the amplitude demodulation module;The position computation module is used for according to the solution modulation Calculate the pen tip position of the active pen.
10. touch screen according to claim 9, it is characterised in that the amplitude demodulation module is also attached to the frequency Demodulation module;The number of the predeterminated frequency is 1, and the predeterminated frequency is the frequency, demodulation frequency;
The information FM signal to be passed includes the Part I signal received successively and Part II signal;
The touch screen carries out frequency demodulation to the Part I signal, to obtain the solution of the information FM signal to be passed Frequency modulation rate;
The touch screen carries out amplitude demodulation according to the frequency, demodulation frequency to the Part II signal, described to be passed to obtain The solution modulation of information FM signal.
11. signal resolution method according to claim 9, it is characterised in that the number of the predeterminated frequency is one, and The predeterminated frequency is the centre frequency of the JieDuHuaYu II Decoction band of the touch screen.
12. signal resolution method according to claim 9, it is characterised in that the number of the predeterminated frequency is more to be multiple A predeterminated frequency belongs to the JieDuHuaYu II Decoction band of the touch screen, and one of predeterminated frequency is the center frequency of the JieDuHuaYu II Decoction band Rate.
CN201680000902.2A 2016-08-26 2016-08-26 Signal transmitting method, signal resolution method, active pen and touch screen CN107969152A (en)

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Citations (4)

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US5138118A (en) * 1991-05-06 1992-08-11 International Business Machines Corporation Pulsed pen for use with a digitizer tablet
CN102156557A (en) * 2011-04-12 2011-08-17 中兴通讯股份有限公司 Handwriting pen, mobile terminal and method for operating on mobile terminal by using handwriting pen
CN102576274A (en) * 2010-09-22 2012-07-11 赛普拉斯半导体公司 Capacitive stylus for a touch screen
CN103534670A (en) * 2010-10-28 2014-01-22 赛普拉斯半导体公司 Synchronizing a stylus with a capacitive sense array

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138118A (en) * 1991-05-06 1992-08-11 International Business Machines Corporation Pulsed pen for use with a digitizer tablet
CN102576274A (en) * 2010-09-22 2012-07-11 赛普拉斯半导体公司 Capacitive stylus for a touch screen
CN103534670A (en) * 2010-10-28 2014-01-22 赛普拉斯半导体公司 Synchronizing a stylus with a capacitive sense array
CN102156557A (en) * 2011-04-12 2011-08-17 中兴通讯股份有限公司 Handwriting pen, mobile terminal and method for operating on mobile terminal by using handwriting pen

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