CN104423768B - Touch-control system and its control method - Google Patents
Touch-control system and its control method Download PDFInfo
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- CN104423768B CN104423768B CN201310409670.4A CN201310409670A CN104423768B CN 104423768 B CN104423768 B CN 104423768B CN 201310409670 A CN201310409670 A CN 201310409670A CN 104423768 B CN104423768 B CN 104423768B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
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Abstract
The invention discloses a kind of touch-control system, includes an inductive touch pad, inductive touch pad includes multiple sensing channels, and each sensing channel includes the multiple conductor elements mutually concatenated, and a sensing contact is wherein formed at each two conductor element concatenation；One first control module, is coupled to those multiple sensing channels, and is coupled to the voltage stabilizing control module comprising a voltage stabilizing control module and ground terminal control module, one end of each sensing channel, and the other end is coupled to the ground terminal control module；And one second control module, the plurality of sensing contact is coupled to, receives multiple inductive signals of the plurality of sensing contact to corresponding, and at least touch-control coordinate corresponding to the inductive touch pad is calculated according to the plurality of inductive signal.The invention also discloses a kind of control method of the touch-control system.Thereby improve the signal processing efficiency of touch-control system.
Description
Technical field
The present invention relates to technical field of touch control, more particularly to a kind of touch-control system and its control method.
Background technology
In the market of various consumption electronic products now, personal digital assistant (PDA), mobile phone (mobile
Phone), the portable electronic product such as notebook computer (notebook) and tablet PC (tablet PC) is all extensive
Use interface tool of the contact panel (touch panel) as its data communication.Further, since current electronic product is set
Count all with light, thin as direction, therefore can wish to omit such as keyboard, mouse conventional input devices in the design of product, especially
, in the case where stressing the drive of tablet PC demand of human oriented design, touch panel has suddenly become zero group of key for it
Part.
The touch-control display panel of mainstream at present, since indium tin oxide (Indium Tin Oxide, ITO) has preferably thoroughly
Luminosity and electric conductivity, often select materials of the ITO as its touch control electrode, such as U.S. Patent Publication No. US 2011/
Touch-control display panel disclosed in 0254803A1, can be further simplified as the touch-control system 10 shown in Fig. 1.Touch-control after simplification
System 10 includes the touch control electrode of double layer planar P1, P2, and the touch control electrode of each plane can be regarded as multiple equivalent electrics
Resistance unit mutually concatenates, such as plane P1 includes equivalent resistance cells D 1, D2, and plane P2 includes equivalent resistance unit
D3、D4.When user touches touch-control display panel, the touch control electrode of double layer planar P1, P2 because user's touch-control,
And it is another equivalent resistance cells D 5 to couple equivalent resistance cells D 1, D2, D3, D4.In the case, touch-control display panel profit
With a control module and multiple transmission lines, equivalent resistance cells D 1, the resistance value between D2, D3, D4, D5 after corresponding detecting coupling
Change, to judge the touch-control coordinate of user, such as the touch point C shown in Fig. 1.
The signal processing mode of above-mentioned touch-control display panel is complex, it is necessary to which Time share scanning touch control electrode, i.e., single to lead
The logical time can only obtain single signal, after repeatedly sequentially scanning, can just obtain position report point, such system processing signal efficiency compared with
To be low.
The content of the invention
In view of this, the present invention provides a kind of touch-control system and its control method, to improve touch-control system signal processing effect
Rate.
The present invention discloses a kind of touch-control system, includes：One inductive touch pad, the inductive touch pad include multiple sensings
Channel, and each sensing channel includes the multiple conductor elements mutually concatenated, is wherein formed at each two conductor element concatenation
One sensing contact；One first control module, is coupled to those multiple sensing channels, and includes a voltage stabilizing control module and ground terminal control
Molding block, one end of each sensing channel are coupled to the voltage stabilizing control module, and the other end is coupled to the ground terminal control module；And
One second control module, is coupled to the plurality of sensing contact, and the plurality of multiple inductive signals for sensing contact are received to corresponding,
And at least touch-control coordinate corresponding to the inductive touch pad is calculated according to the plurality of inductive signal.
In one of the embodiments, which includes multiple stabilized switch units；And ground terminal control
Module includes multiple ground terminal switch elements；Wherein, one end of each sensing channel is coupled to the stabilized switch unit, the other end
It is coupled to the ground terminal switch element.
In one of the embodiments, which also includes a frequency controller, is coupled to first control
Molding block, and make respectively the sensing channel be sequentially coupled to the corresponding respectively stabilized switch unit of the sensing channel and the respectively ground terminal
Switch element.
In one of the embodiments, which includes：
Multiple inductive switch units, each of which inductive switch unit are coupled to each sensing channel by multiple transmission lines
One of sensing contact；
Multiple comparing units, are coupled to the plurality of inductive switch unit, for receiving the inductive signal of those sensing contacts,
And by the inductive signal compared with a critical value to produce a comparative result；And
One processing unit, is coupled to the comparing unit, to receive the comparative result, and then is calculated according to the comparative result
Corresponding to the touch-control coordinate of the inductive touch pad.
In one of the embodiments, which includes：
One first input end, is coupled to the inductive switch unit, for receiving the inductive signal of the sensing contact；
One second input terminal, for receiving the critical value；And
One output terminal, for exporting the comparative result to the processing unit.
In one of the embodiments, those critical values for the inductive touch pad without touch-control when those sensing contacts correspond to
Magnitude of voltage.
In one of the embodiments, the resistance value of those conductor elements is equal in magnitude.
Invention additionally discloses a kind of control method for the touch-control system, step is included：A) first control module is produced
A raw control signal, makes one end of those sensing channels be turned on the voltage stabilizing control module, the other end and the ground terminal control module
Conducting, those sensing contacts of those sensing channels produce multiple inductive signals；B) second control module receives those sensings
Signal, multiple comparative results are produced according to those inductive signals；C) second control module is calculated according to those comparative results
Corresponding to an at least touch-control coordinate for the inductive touch pad.
In one of the embodiments, step a) include those sensing channels be sequentially coupled to the voltage stabilizing control module with
Between ground terminal control.
In one of the embodiments, step b) include by those inductive signals and default critical value one by one compared with,
And produce multiple comparative results.
In one of the embodiments, those critical values for the inductive touch pad without touch-control when those sensing contacts correspond to
Magnitude of voltage.
In one of the embodiments, those comparative results are those inductive signals and the difference of those critical values.
In one of the embodiments, step is further included：An inductive signal look-up table, step are established according to those critical values
B) include by those inductive signals compared with the inductive signal look-up table, and produce those comparative results.
In one of the embodiments, the resistance value of those conductor elements is equal in magnitude.
Inductive touch pad includes multiple sensing channels in the present invention, and each sensing channel, which includes mutually concatenate multiple, leads
Body unit, wherein forms a sensing contact to produce multiple inductive signals by the second control module at each two conductor element concatenation
Receive, thereby improve the signal processing efficiency of touch-control system.
Brief description of the drawings
Fig. 1 is known technology the schematic diagram of a touch-control system.
Fig. 2 is the schematic diagram of one touch-control system of the embodiment of the present invention.
Fig. 3 A are the schematic diagram of linearity curve of the embodiment of the present invention one without touch-control.
Fig. 3 B are the schematic diagram of the linearity curve of touch-control of the embodiment of the present invention one.
Fig. 4 is the schematic diagram of inductive signal look-up table of the embodiment of the present invention one without touch-control.
Fig. 5 is the schematic diagram of the inductive signal look-up table of touch-control of the embodiment of the present invention one.
Fig. 6 is the flow chart of one control method of the embodiment of the present invention.
Reference numeral
10th, 20 touch-control system
200 inductive touch pads
2020 voltage stabilizing control modules
2022 ground terminal control modules
204 second control modules
2040 processing units
30 transmission lines
60 control methods
600th, 602,604,606,608 step
C touch points
D1, D2, D3, D4, D5 equivalent resistance unit
C_1~C_N comparing units
GND ground terminal voltage
CH_1~CH_M senses channel
L1, L2, L3 linearity curve
P1, P2 plane
P1_1~P1_N ... PX_1~PX_N ..., sensing contact
PM_1~PM_N
E conductor elements
SW_V1~SW_VM stabilized switch units
SW_G1~SW_GM ground terminal switch elements
SW_S1~SW_SN inductive switch units
TB1, TB2 inductive signal look-up table
VDD burning voltages
Embodiment
Some vocabulary has been used among specification and claims to censure specific component.Those skilled in the art
Member is, it is to be appreciated that manufacturer may call same component with different nouns.Present specification and claims are not
In a manner of the difference of title is used as difference component, but it is used as the benchmark of difference with the difference of component functionally.
"comprising" of the specification and claims mentioned in is an open term in the whole text, therefore should be construed to " include but not
It is defined in ".In addition, " electric connection " word is comprising any direct and indirect electrical connection herein.Therefore, if in text
Describe a first device and be electrically connected at or couple a second device, then represent the first device and may be directly connected to second dress
Put, or the second device is coupled indirectly to by other devices or connection means.
Please refer to Fig.2, Fig. 2 is the schematic diagram of one touch-control system 20 of the embodiment of the present invention.As shown in Fig. 2, touch-control system 20
Include an inductive touch pad 200, one first control module (figure is not marked) and one second control module 204.Inductive touch pad
200 are respectively coupled to the first control module and the second control module 204.The control that inductive touch pad 200 passes through the first control module
System, multiple inductive signals are produced in single ON time, then receive the plurality of inductive signal at the same time by the second control module 204,
To judge whether user presses touch-control system 20 according to the plurality of inductive signal, and then determine to correspond to inductive touch pad 200
One or more touch-control coordinates.
Specifically, inductive touch pad 200 includes multiple sensing channel CH_1~CH_M, and each sensing channel includes phase
The multiple conductor element E mutually concatenated.Multiple sensing channel CH_1~CH_M are arranged mutually parallel in the same direction, such as multiple senses
Channel CH_1~CH_M is answered to be arranged mutually parallel along X-coordinate direction, it is each to sense on channel multiple conductor element E along Y-coordinate side
To mutual concatenation, and multiple conductor element E of each sensing channel are identical.In the present embodiment, each conductor element E is all pressure
Quick resistance, its material may be selected from indium tin oxide, zinc oxide, bismuth oxide, antimony oxide or manganese oxide etc..Each two conductor element E
Concatenation at form a sensing contact, and then in forming multiple sensing contacts on each sensing channel.For example, channel is sensed
Include a conductor element E of (N+1) mutually concatenated on CH_1, sense is formed at the concatenation that (N+1) a conductor element E is mutually concatenated
Answer include on contact P1_1~P1_N, sensing channel CH_2 sensing contact P2_1~P2_N ..., include on sensing channel CH_M
There is sensing contact PM_1~PM_N etc. so that multiple conductor element E on inductive touch pad 200 form the square of a M × (N+1)
Battle array.
First control module includes voltage stabilizing control module 2020 and ground terminal control module 2022.Wherein, voltage stabilizing controls
Module 2020 includes M stabilized switch cell S W_V1~SW_VM, and each stabilized switch unit includes both ends, one end coupling
In a burning voltage VDD, the other end is coupled to one of multiple sensing channel CH_1~CH_M.Ground terminal control module 2022 is wrapped
Containing M ground terminal switch element SW_G1~SW_GM, and each ground terminal switch element includes both ends, and one end is coupled to a ground terminal
Voltage GND, the other end are coupled to one of multiple sensing channel CH_1~CH_M.
In addition, the first control module can also include a frequency controller (not shown), make each sensing channel CH_1
~CH_M is sequentially coupled to its corresponding each stabilized switch cell S W_V1~SW_VM and each ground terminal switch element SW_G1
~SW_GM.For example, in the first ON time, frequency controller produces a control signal, only makes stabilized switch unit
SW_V1 and corresponding ground terminal switch element SW_G1 conductings, i.e., only corresponding conducting sensing channel CH_1 is in burning voltage VDD and ground
Between terminal voltage GND；In the second ON time, frequency controller produces a control signal, only makes stabilized switch cell S W_V2
Turned on corresponding ground terminal switch element SW_G2, i.e., only corresponding conducting sensing channel CH_2 is in burning voltage VDD and ground terminal voltage
Between GND；According in this way, under the control of frequency controller, turn in order senses channel CH_1~CH_M in burning voltage
Between VDD and ground terminal voltage GND.
Second control module 204 includes multiple inductive switch cell S W_S1~SW_SN, multiple comparing unit C_1~C_
N and processing unit 2040.Each inductive switch unit is respectively coupled to its of each sensing channel by multiple transmission lines 30
In one sensing contact.In this present embodiment, for example, inductive switch cell S W_S1 distinguishes coupling by multiple transmission lines 30
The sensing contact P1_1 on sensing channel CH_1 is met, senses the sensing contact P2_1 ... on channel CH_2, is sensed on channel CH_M
Sensing contact PM_1.Inductive switch cell S W_S2 is respectively coupled to the sensing on sensing channel CH_1 by multiple transmission lines 30
Sensing contact PM_2 on sensing contact P2_2 ... on contact P1_2, sensing channel CH_2, sensing channel CH_M, with this reality
Existing each inductive switch unit is coupled to one of sensing contact of each sensing channel by multiple transmission lines 30.
In more detail for example, in one first ON time, only sense channel CH_1 be coupled to burning voltage VDD with
Between ground terminal voltage GND, accordingly, multiple sensing contact P1_1~P1_N on sensing channel CH_1 pass through multiple transmission lines respectively
30 are coupled to corresponding inductive switch cell S W_S1~SW_SN, for example, sensing contact P1_1 is coupled to inductive switch unit
SW_S1 ..., sensing contact P1_N are coupled to inductive switch cell S W_SN.Make multiple sensing contact P1_1 on sensing channel CH_1
Multiple inductive signals of~P1_N are transmitted to inductive switch cell S W_S1~SW_SN, then terminate the first ON time.Then,
In in the second ON time after the first ON time, sensing channel CH_2 is coupled to burning voltage VDD and ground terminal voltage GND
Between, and continue above-mentioned similar mode of operation, pass through multiple sensing contact P2_1~P2_N on sensing channel CH_2 more
A transmission line 30 is coupled to corresponding inductive switch cell S W_S1~SW_SN, for example, sensing contact P2_1 is coupled to sensing
Switch element SW_S1 ..., sensing contact P2_N are coupled to inductive switch cell S W_SN, and then will sense multiple on channel CH_2
Multiple inductive signals of sensing contact P2_1~P2_N are transmitted to inductive switch cell S W_S1~SW_SN, accordingly, pass through frequency
Controller, turn in order sensing channel CH_1~CH_M, altogether will M ON time of experience come complete to sense channel CH_1~
The conducting of CH_M, to obtain multiple inductive signals of the upper multiple sensing contacts of sensing channel CH_1~CH_M respectively.
Furthermore each comparing unit includes first input end, the second input terminal and output terminal, multiple comparing unit C_
1~C_N is coupled to corresponding inductive switch cell S W_S1~SW_SN by respective first input end respectively, is received with corresponding
Multiple inductive signals of corresponding sensing contact on multiple sensing channel CH_1~CH_M, such as in the first ON time, compare
Unit C_1~C_N is coupled to corresponding inductive switch cell S W_S1~SW_SN by respective first input end, to receive sense
The inductive signal that contact P1_1~P1_N is sensed on channel CH_1 is answered, in the second ON time, comparing unit C_1~C_N leads to
Cross respective first input end and be coupled to corresponding inductive switch cell S W_S1~SW_SN, felt with receiving on sensing channel CH_2
The inductive signal of contact P2_1~P2_N is answered, with this comparing unit C_1~C_N in M ON time, sequentially receives sense respectively
Answer multiple inductive signals of the upper corresponding sensing contacts of channel CH_1~CH_M.Multiple comparing unit C_1~C_N respective second
Input terminal will be respectively coupled to critical value V_1~V_N, each comparing unit is may compare received inductive signal and face with corresponding
The size of dividing value, in a certain ON time, the corresponding output terminal by each comparing unit produces a comparative result.Processing unit
2040 are coupled to the output terminal of comparing unit C_1~C_N, to receive multiple comparative results, and then are calculated according to comparative result
Corresponding to the touch-control coordinate of inductive touch pad 20.For example, in one first ON time, the frequency control of the first control module
Device processed, even if making sensing channel CH_1 conducting sensings channel CH_1 be coupled between burning voltage VDD and ground terminal voltage GND, senses
Multiple sensing contact P1_1~P1_N on channel CH_1 are coupled to corresponding inductive switch by corresponding transmission line 30 respectively
Cell S W_S1~SW_SN, that is, sense contact P1_1 and be coupled to inductive switch cell S W_S1, sensing contact P1_2 is coupled to sensing
Switch element SW_S2 ..., sensing contact P1_N are coupled to inductive switch cell S W_SN, further comparing unit C_1 and pass through sense
Inductive switch cell S W_S1 receives the inductive signal that contact P1_1 is sensed on sensing channel CH_1, and comparing unit C_2 is opened by sensing
Close cell S W_S2 and receive the inductive signal ... that contact P1_2 is sensed on sensing channel CH_1, comparing unit C_N is opened by sensing
Close cell S W_SN and receive and sense the inductive signal of contact P1_N on sensing channel CH_1, so be respectively compared inductive signal with it is right
The size of critical value is answered, produces multiple comparative results of corresponding sensing channel CH_1 accordingly, and in other ON times, than
Similar comparison will be also carried out compared with unit C_1~C_N to operate, and then produces multiple comparison knots of corresponding different sensing channels
Fruit, and it is transmitted to processing unit 2040.In simple terms, the X-coordinate value of inductive touch pad 200 can be according to the first control module not
The different sensing channel of conducting is drawn in same ON time；Second control module 204 receives one in different ON times
Multiple inductive signals of multiple sensing contacts on sensing channel, the size with more each inductive signal with corresponding critical value, into
And multiple comparative results are produced, processing unit 2040 is produced according to multiple comparative results corresponding to inductive touch pad 200
Y-coordinate value.In this present embodiment, processing unit 2040 will be implemented by a Digital Signal Processing (DSP) unit, to produce correspondence
In the touch-control coordinate on inductive touch pad 200.
In addition, in this present embodiment, what the second input terminal of multiple correspondences of comparing unit C_1~C_N was received faces
Dividing value V_1~V_N can be represented by a linearity curve.Please refer to Fig.3 A and Fig. 3 B, Fig. 3 A for the embodiment of the present invention one not
The schematic diagram of linearity curve through touch-control, and the schematic diagram that Fig. 3 B are the linearity curve of touch-control of the embodiment of the present invention one.Such as
Shown in Fig. 3 A, it is assumed that touch-control system 20 is in conducting sensing channel CH_1 in one first ON time, and user's not press sense
Trackpad 200 is answered, in the case, the corresponding each critical value received of multiple second input terminals of comparing unit C_1~C_N
Straight line equation can be passed throughTo represent, wherein symbol V represents voltage stabilizing control
Voltage difference between module and ground terminal control module, (N+1) represent the quantity for the conductor element that sensing channel includes, symbol n
Represent it is a certain sensing contact and ground terminal control module between conductor element quantity, symbol R be conductor element E resistance value (
In the present embodiment, the resistance value for defining conductor element is R), the first input end that Q senses the corresponding comparing unit of contact for this is connect
The inductive signal value of receipts.During because of inductive touch pad without touch-control, this inductive signal value also senses the corresponding comparing unit of contact for this
The critical value that is received of the second input terminal.So, voltage difference V is divided into multiple by multiple conductor elements of each sensing channel
Decile inductive voltage valueCross-pressure corresponding to as each conductor element, then a certain sensing contact and ground terminal control mould
The quantity n of conductor element between block and decile inductive voltage valueProduct be the corresponding comparing unit of sensing contact
The second input terminal receive critical value.For example, the number of the conductor element between contact P1_N and ground terminal control module is sensed
Measure as 1, i.e. n=1, then the critical value that the first input end of comparing unit C_N receives isSimilarly, contact P1_ (N- are sensed
1) critical value that the first input end of corresponding comparing unit C_ (N-1) receives isIt is corresponding to sense contact P1_1
The critical value that the first input end of comparing unit C_1 receives isAccordingly, processing unit is by shown in advance storage Fig. 3 A
Linearity curve L1, to be used as the reference subsequently compared.With reference to reference to figure 2 and Fig. 3 B, in the first ON time, channel CH_1 is sensed
It is coupled between voltage stabilizing control module 2020 and ground terminal control module 2022, multiple sensing contact P1_1 on sensing channel CH_1
~P1_N is coupled to corresponding inductive switch cell S W_S1~SW_SN by corresponding transmission line 30 respectively, when user presses
Inductive touch pad 200, and position of touch is just by one of multiple sensing contact P1_1~P1_N on near-induction channel CH_1
When, comparing unit C_1~C_N will receive multiple inductive signals from inductive switch cell S W_S1~SW_SN, it can also lead to
Cross following straight line equation to represent, i.e.,Wherein
Δ R is for conductor element E because pressing caused resistance change.Compare the linearity curve L1 without touch-control, linearity curve
The inductive signal of L2 produces difference since the n of touch pointIn other words, comparing unit will be in identical n values
On, the Q value differences compared corresponding to linearity curve L1 and linearity curve L2 are different, if producing difference as shown in Figure 3B, processing is single
Member 2040 can determine whether out the Y-coordinate of the sensing contact of user institute touch-control, while the sense that the first control module record turns at this time
Answer channel to obtain the X-coordinate of the sensing contact of user institute touch-control, and then obtain sensing contact relative on inductive touch pad 200
Touch-control coordinate.
In this present embodiment, touch-control system 20 can be prestored at least linearity curve L1 and linear using processing unit 2040
Curve L2, senses whether contact has the difference of Q values with the sensing channel for judging to be turned in different ON times each, into
And judge the Y-coordinate of the sensing contact of user institute touch-control, and the conducting that the X-coordinate of touch point can be recorded by the first control module
Sensing channel draw, so as to draw the touch-control coordinate on inductive touch pad 200.Certainly, those skilled in the art also can will be more
Multiple inductive signals corresponding to multiple sensing contacts on a sensing channel, save as multiple matrix units of M × N matrix,
And then establish the inductive signal look-up table of a correspondence inductive touch pad coordinate.Please refer to Fig.4 and Fig. 5, Fig. 4 are the embodiment of the present invention
The schematic diagram of the one inductive signal look-up table without touch-control, Fig. 5 be the embodiment of the present invention one touch-control inductive signal search
The schematic diagram of table.Incorporated by reference to reference to figure 2 and Fig. 4, sequentially complete whole when touch-control system 20 and sense leading for channel CH_1~CH_M
After logical operation is (i.e. by M ON time), processing unit 2040 also includes a storage element (not shown), and correspondence stores
Multiple inductive signals of different sensing contacts on different ON times, different sensing channels, when without touch-control, the plurality of sensing letter
Number be multiple critical values.The first row sensing channel CH_1 of inductive signal look-up table TB1 without touch-control as shown in Figure 4, it is most
Measurement magnitude of voltage close to first sensing contact of ground connection terminal voltage GND is(i.e. a conductor element it is corresponding across
Pressure), and be sequentially up incremented byCan and so on other sensing channels sensing
Signal.If user has a touch-control sensing Trackpad 200, and touch location is when sensing channel CH_3, as shown in Figure 5 touch-control
The 3rd row sensing channel CH_3 of inductive signal look-up table TB2, it also has near first sensing contact of ground connection terminal voltage GND
Identical magnitude of voltage isAnd sequentially up it is incremented by Inductive signal produces difference since the n of touch pointAccordingly, processing unit
2040 can be operated by a coordinate transformation, and the relative position of inductive signal look-up table TB2 is converted on inductive touch pad 200
Touch-control coordinate, and complete the relevant operation of touch-control coordinate.For example, compare the inductive signal look-up table in Fig. 4 and Fig. 5, it is known that touch
The abscissa touched a little is 3, ordinate n.
In the present invention, the control method 60 that touch-control system 20 is applicable in comprises the steps of：
Step 600：Start.
Step 602：First control module produces a control signal, and the one end and the voltage stabilizing for making those sensing channels control
Module turns on, and the other end is turned on the ground terminal control module, those sensing contacts of those sensing channels produce multiple sensing letters
Number.
Step 604：Second control module receives those inductive signals, and multiple relatively knots are produced according to those inductive signals
Fruit.
Step 606：Second control module is calculated corresponding to the inductive touch pad at least according to those comparative results
One touch-control coordinate.
Step 608：Terminate.
The detailed operation of each step in control method 60, the relevant paragraph for referring to previous embodiment and Fig. 2 to Fig. 6 are said
Bright, this will not be repeated here.Notably, the first control module also includes a frequency controller (not shown), and can be synchronous
Inductive switch cell S W_S1~SW_SN, comparing unit C_1~C_N and processing unit 2040 in second control module 204.
In the case, in step 602 and step 606, one of them sense is turned on when the first control module generation control signal
When answering channel CH_1~CH_M, the second control module 204 also receives multiple sensings on the sensing channel switched on adaptive
Multiple inductive signals of contact, multiple inductive signals are stored as the column matrix numerical value in inductive signal look-up table using corresponding, into
And sequentially complete to save as inductive signal look-up table with correspondence after the conducting of sensing channel CH_1~CH_M, then by processing unit
2040 determine whether that difference produces, and then produce the touch-control coordinate relative to inductive touch pad 200.Certainly, art technology
Also adaptive adds other handover mechanisms and control signal to personnel, the first control module and the second control module 204 is matched somebody with somebody
The matrix size of M × (N+1) that multiple conductor elements are formed on inductive touch pad 200 is closed, or can be according to inductive touch pad
200 material property carrys out the conducting situation person of adaptive adjustment sensing channel CH_1~CH_M, is all scope of the invention.
Compared to known technology, the touch-control system 20 that the present embodiment is provided is only applicable to inductive touch pad 200, touch-control system
System 20 only needs sequentially to complete the conducting of sensing channel CH_1~CH_M, you can judges the sensing seat relative to inductive touch pad 200
Mark, its opposite sweep time can be greatly reduced, and scan efficiency is substantially improved.In addition, those skilled in the art also can be voluntarily
Judge the quantity number that inductive touch pad 200 includes conductor element, and then decide whether the sensing channel CH_ of only turning part
1~CH_M, or compartment of terrain conducting sensing channel CH_1~CH_M, are searched with the inductive signal of correspondence establishment difference line number/columns
Table, and then simplify the treatment effeciency of processing unit 2040 or calculate time etc., it is not used to limitation scope of the invention.
In conclusion touch-control system provided in an embodiment of the present invention and its control method, by the first control module and
Second control module, multiple sensing channels on turn in order inductive touch pad, with multiple in being obtained respectively in the different sensitive times
The inductive signal for the multiple sensing contacts to be formed is mutually coupled between conductor element, the second control module adaptive is judged multiple senses
Whether the difference of a linearity curve, the corresponding touch-control coordinate that judges relative to inductive touch pad have been produced between induction signal.Compared to
Known technology, the present embodiment signal processing is efficient, and can avoid the touch control electrode using double layer planar, while increases touch-control system
System supports antimierophonic effect, to increase the application range of touch-control system.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of touch-control system, it is characterised in that include：
One inductive touch pad, includes multiple sensing channels, and each sensing channel includes the multiple conductor lists mutually concatenated
Member, wherein forms a sensing contact at each two conductor element concatenation；
One first control module, is coupled to those multiple sensing channels, and comprising a voltage stabilizing control module and ground terminal control module,
One end of each sensing channel is coupled to the voltage stabilizing control module, and the other end is coupled to the ground terminal control module；And
One second control module, is coupled to the plurality of sensing contact, to the corresponding multiple sensings for receiving the plurality of sensing contact
Signal, and at least touch-control coordinate corresponding to the inductive touch pad is calculated according to the plurality of inductive signal, second control
Module includes：
Multiple inductive switch units, each of which inductive switch unit are coupled to its of each sensing channel by multiple transmission lines
In one sensing contact；
Multiple comparing units, are coupled to the plurality of inductive switch unit, for receiving the inductive signal of those sensing contacts, and will
The inductive signal is compared with a critical value to produce a comparative result；And
One processing unit, is coupled to the comparing unit, to receive the comparative result, and then is calculated and corresponded to according to the comparative result
In the touch-control coordinate of the inductive touch pad.
2. touch-control system as claimed in claim 1, it is characterised in that the voltage stabilizing control module includes multiple stabilized switch lists
Member；And the ground terminal control module includes multiple ground terminal switch elements；Wherein, it is steady to be coupled to this for one end of each sensing channel
Compress switch unit, and the other end is coupled to the ground terminal switch element.
3. touch-control system as claimed in claim 2, it is characterised in that first control module also includes a FREQUENCY CONTROL
Device, is coupled to first control module, and make respectively the sensing channel be sequentially coupled to the corresponding respectively voltage stabilizing of the sensing channel and open
Close unit and respectively the ground terminal switch element.
4. touch-control system as claimed in claim 1, it is characterised in that the comparing unit includes：
One first input end, is coupled to the inductive switch unit, for receiving the inductive signal of the sensing contact；
One second input terminal, for receiving the critical value；And
One output terminal, for exporting the comparative result to the processing unit.
5. touch-control system as claimed in claim 2, it is characterised in that those critical values for the inductive touch pad without touch-control when
Those corresponding magnitudes of voltage of sensing contact.
6. touch-control system as claimed in claim 1, it is characterised in that the resistance value of those conductor elements is equal in magnitude.
7. a kind of control method of touch-control system as claimed in claim 1, includes step：
A) first control module produces a control signal, one end of those sensing channels is turned on the voltage stabilizing control module,
The other end is turned on the ground terminal control module, those sensing contacts of those sensing channels produce multiple inductive signals；
B) second control module receives those inductive signals, and multiple comparative results are produced according to those inductive signals；
C) second control module calculates at least touch-control coordinate corresponding to the inductive touch pad according to those comparative results.
8. control method as claimed in claim 7, it is characterised in that step a) includes those sensing channels and is sequentially coupled to
Between the voltage stabilizing control module and ground terminal control.
9. control method as claimed in claim 7, it is characterised in that step b) include by those inductive signals with it is default
Critical value compares one by one, and produces multiple comparative results.
10. control method as claimed in claim 9, it is characterised in that those critical values are the inductive touch pad without touch-control
When those corresponding magnitudes of voltage of sensing contact.
11. control method as claimed in claim 9, it is characterised in that those comparative results are those inductive signals and those
The difference of critical value.
12. control method as claimed in claim 9, it is characterised in that further include step：A sense is established according to those critical values
Induction signal look-up table, step b) is included by those inductive signals compared with the inductive signal look-up table, and produces those and compare knot
Fruit.
13. control method as claimed in claim 9, it is characterised in that the resistance value of those conductor elements is equal in magnitude.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310409670.4A CN104423768B (en) | 2013-09-10 | 2013-09-10 | Touch-control system and its control method |
| TW103211003U TWM495562U (en) | 2013-09-10 | 2014-06-20 | Touch system |
| TW103121402A TWI628561B (en) | 2013-09-10 | 2014-06-20 | Touch system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310409670.4A CN104423768B (en) | 2013-09-10 | 2013-09-10 | Touch-control system and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104423768A CN104423768A (en) | 2015-03-18 |
| CN104423768B true CN104423768B (en) | 2018-04-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310409670.4A Active CN104423768B (en) | 2013-09-10 | 2013-09-10 | Touch-control system and its control method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104423768B (en) |
| TW (2) | TWM495562U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358012B (en) * | 2020-03-06 | 2022-12-02 | 深圳普赢创新科技股份有限公司 | Electromagnetic induction type coordinate positioning device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996013A (en) * | 2009-08-18 | 2011-03-30 | 胜华科技股份有限公司 | Touch sensing method of resistance-type touch device |
| CN102346616A (en) * | 2010-07-22 | 2012-02-08 | 富士通电子零件有限公司 | Method of detecting position on touchscreen panel, touchscreen panel, and method of initializing touchscreen panel |
| CN203480494U (en) * | 2013-09-10 | 2014-03-12 | 宸鸿科技(厦门)有限公司 | Touch control system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101386958B1 (en) * | 2007-08-21 | 2014-04-18 | 삼성디스플레이 주식회사 | Method for discerning touch points and touch panel for carrying out the method |
| JP5106268B2 (en) * | 2008-06-24 | 2012-12-26 | 富士通コンポーネント株式会社 | Touch panel |
| US8310464B2 (en) * | 2008-10-16 | 2012-11-13 | Texas Instruments Incorporated | Simultaneous multiple location touch systems |
| TWI450176B (en) * | 2009-06-18 | 2014-08-21 | Wintek Corp | Touch sensing method for resistive type touch apparatus |
-
2013
- 2013-09-10 CN CN201310409670.4A patent/CN104423768B/en active Active
-
2014
- 2014-06-20 TW TW103211003U patent/TWM495562U/en unknown
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996013A (en) * | 2009-08-18 | 2011-03-30 | 胜华科技股份有限公司 | Touch sensing method of resistance-type touch device |
| CN102346616A (en) * | 2010-07-22 | 2012-02-08 | 富士通电子零件有限公司 | Method of detecting position on touchscreen panel, touchscreen panel, and method of initializing touchscreen panel |
| CN203480494U (en) * | 2013-09-10 | 2014-03-12 | 宸鸿科技(厦门)有限公司 | Touch control system |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI628561B (en) | 2018-07-01 |
| TWM495562U (en) | 2015-02-11 |
| CN104423768A (en) | 2015-03-18 |
| TW201510813A (en) | 2015-03-16 |
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