CN103970316A - Touch control induction circuit, device and system and operation method thereof - Google Patents
Touch control induction circuit, device and system and operation method thereof Download PDFInfo
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- CN103970316A CN103970316A CN201310032010.9A CN201310032010A CN103970316A CN 103970316 A CN103970316 A CN 103970316A CN 201310032010 A CN201310032010 A CN 201310032010A CN 103970316 A CN103970316 A CN 103970316A
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Abstract
The invention relates to a touch control induction circuit for being connected with guide lines in a touch control area to measure the variation of signals. When under a driving mode, the touch control induction circuit allows the guide lines to be coupled with an AC potential, and if a first potential variation larger than a first critical value is measured by the touch control induction circuit, the fact that an object is close to the touch control area near to the guide lines is judged; when under a driven mode, the touch control induction circuit allows the guide lines to be coupled with a DC potential, and if the second potential variation larger than a second critical value is measured by the touch control induction circuit, the fact that an object close to the touch area near to the guide lines is judged; when the second potential variation is measured, the touch control induction circuit provides no AC potential to the guide lines.
Description
Technical field
The present invention, relevant for touch-control sensing system, is particularly to have the touch-control sensing system of Passive Mode.
Background technology
Touch-control sensing is one of important man-computer interface of electronic system, is widely used on many electronic installations.For example intelligent mobile phone, notebook computer, panel computer etc. modern can not one day or scarce consumption electronic products, and just a large amount of contact panels that use are as main man-computer interface.
As everyone knows, the electronic system with touch-control sensing function comprises Touch Zone, and the finger or the pointer that are available for users to contact.In general, current touch-control sensing system has resistance-type, condenser type, optical profile type, surface acoustic wave type etc. technology.Wherein, capacitive touch control techniques is used on the touch control screen of medium and small-sized mostly, becomes the mainstream technology of application quantity maximum on market.
Please refer to shown in Fig. 1 its intelligent mobile phone that is existing known techniques or board device 100.This device 100 includes casing 110, and on this casing, topmost man-computer interface is touch control screen 120 and at least one button 130.The function of button 130 is only limited to switchgear 100 and/or switch touch control screen 120, and user is by all functions of above-mentioned touch control screen 120 these devices 100 of operation.
Use the touch control screen 120 of capacitance touching control formula technology conventionally to comprise the Trackpad being superimposed upon on screen, for user's hand or pointer contact, use.Trackpad inside includes many wires, and each wire is all couple to the touch control induction circuit in touch control induction device.
Capacitance touching control formula technology mainly can be divided into two kinds, is a kind ofly called mutual capacitance, and another kind is called self-capacitance.These two kinds of technology are all that while relying on finger or pointer near the wire of Trackpad, the variation of the capacitance on wire that causes, drives the pressure drop of current potential to learn the position of touch point by measurement.These two kinds of technology all rely on the touch control induction circuit that is couple to wire and apply driving voltage, and capacitance touching control formula system must continue to consume electric energy with the voltage on suppling wire when supply drives current potential.
Please refer to shown in Fig. 2 the constitutional diagram of its capacitance touch control system that is existing known techniques.Using on the wheeled apparatus 100 of battery supplied electric power, in continuing the state using, its capacitance touch control system all must remain in the middle of drive pattern 210.In the state of this drive pattern 210, have and drive current potential to offer the wire in Touch Zone, measure whereby user's input.In order to save the use of electric power, in idle a period of time, not receive user's input, or receive after user's order, wheeled apparatus 100 can be closed its touch control screen 120, makes its capacitance touch control system enter stop mode 220.
In the middle of stop mode 220, owing to not driving current potential to be supplied to the wire in Touch Zone, so its touch-control sensing system cannot measure user in any input of Touch Zone, but also saves the electric energy that lower touch-control sensing system is used.When user wants Rouser 100, other inputs or sensor on just necessary operative installations 100.Conventionally the method for most convenient pushes button 130 exactly, and device 100 will start touch-control sensing system, comes back to the state of drive pattern 210.
Mostly the design of above-mentioned button 130 is mechanical type, and the stroke with a movement allows user feel and presses.Because button 130 has movably parts, with respect in device 100, other do not have for the spare part of movable part, the use life time of button 130 may be the shortest.Also just owing to thering are movably parts in the middle of button 130, waterproof with on anti-dust performance, cannot by the coated part of casing 110, be compared with other, so button 130 just becomes the achilles tendon of device 100.When button 130 fault, user just cannot wake up and be in the central device 100 of stop mode 220.
Therefore,, if can allow the main input element of device 100, namely touch control screen 120 can have the pattern compared with power saving, perhaps just button 130 can be removed from installing 100.Or at least the quantity of button 130 can be minimized, or be to use the number of times of button 130 to minimize, just can directly utilize touch control screen 120 to carry out Rouser 100.Thus, during device life-span of 100 integral body or mean failure rate, can elongate, because enter water or enter dirt and the probability of chance failure also can significantly reduce.
As can be seen here, above-mentioned existing contactor control device, in structure and use, obviously still has inconvenience and defect, and is urgently further improved.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but have no for a long time applicable design always, by development, completed, and common product does not have appropriate structure to address the above problem, this is obviously the problem that the anxious wish of relevant dealer solves.
Summary of the invention
The object of the present invention is to provide a kind of touch control induction circuit, device and system and its method of operating, can increase the bulk life time of touch control induction device, reduce the probability of the fault that meets accident.
The object of the invention to solve the technical problems realizes by the following technical solutions.The invention provides a kind of touch control induction circuit, be connected to wire in Touch Zone with measurement signal variable quantity.When drive pattern, this touch control induction circuit makes this wire be coupled to ac potential, and when this touch control induction circuit measures the first potential change amount that is greater than the first critical value, judgement has near the Touch Zone this wire of object proximity.When Passive Mode, this touch control induction circuit makes this wire be coupled to DC potential, and when this touch control induction circuit measures the second potential change amount that is greater than the second critical value, judgement has near the Touch Zone this wire of object proximity.When wherein this touch control induction circuit measures the second above-mentioned potential change amount, do not provide ac potential to this wire.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, aforesaid touch control induction circuit, wherein this DC potential is earthing potential, and this second potential change amount is the variable quantity higher than the current potential increase of earthing potential, and wherein the first above-mentioned potential change amount is the variable quantity lower than the current potential minimizing of this ac potential.
Preferably, aforesaid touch control induction circuit, wherein the first above-mentioned critical value is greater than this second critical value.
Preferably, aforesaid touch control induction circuit, wherein when in this Passive Mode, and this touch control induction circuit judgement is while having near the Touch Zone this wire of object proximity, and this touch control induction circuit switches to this drive pattern.
Preferably, aforesaid touch control induction circuit, it more comprises in stop mode, this touch control induction circuit stops measuring this change amount signal of this wire, wherein this touch control induction circuit is regularly switched to this Passive Mode by this stop mode, when in this Passive Mode, and the judgement of this touch control induction circuit is not while there is no near the Touch Zone this wire of object proximity, and this touch control induction circuit switches to this stop mode by this Passive Mode.
The object of the invention to solve the technical problems also realizes by the following technical solutions.The invention provides a kind of touch control induction device, comprise a plurality of touch control induction circuits, the many wires that each touch control induction circuit is used for connecting sequentially arrangement are to measure the change amount signal of this respective wire.When drive pattern, each touch control induction circuit makes its respective wire be coupled to ac potential, when the first potential change amount of the first wire being measured when the first touch control induction circuit is greater than the first critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity.When Passive Mode, each touch control induction circuit makes its respective wire be coupled to DC potential, when the second potential change amount of this first wire being measured when this first touch control induction circuit is greater than the second critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity.When wherein this each touch control induction circuit measures the second above-mentioned potential change amount, do not provide ac potential to this respective wire.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, aforesaid touch control induction device, wherein this DC potential is earthing potential, and this second potential change amount is the variable quantity higher than the current potential increase of earthing potential, and wherein the first above-mentioned potential change amount is the variable quantity lower than the current potential minimizing of this ac potential.
Preferably, aforesaid touch control induction device, wherein the first above-mentioned critical value is greater than this second critical value.
Preferably, aforesaid touch control induction device, wherein when in this Passive Mode, and this touch control induction circuit judgement is while having near the Touch Zone this first wire of object proximity, and this touch control induction device switches to this drive pattern.
Preferably, aforesaid touch control induction device, wherein when in this Passive Mode, and a plurality of touch control induction circuits judgements of this touch control induction device are while having near the Touch Zone its respective wire of object proximity, and this touch control induction device switches to this drive pattern.
Preferably, aforesaid touch control induction device, the wire group that wherein these many wires are divided into both direction covers this Touch Zone, when in this Passive Mode, a plurality of touch control induction circuit judgements of this touch control induction device have near the Touch Zone its respective wire of object proximity, and while meeting following condition one of them or its possible combination, this touch control induction device switches to this drive pattern: single-point locality condition, and wherein this object space is the coordinate pair corresponding to above-mentioned both direction; Single-point range of condition, wherein this object space is this coordinate pair corresponding to above-mentioned both direction, and this coordinate is within being positioned at the first scope of this Touch Zone coordinate system; Single point movement condition, wherein this object space is this coordinate pair corresponding to above-mentioned both direction, and this coordinate to moving in the first track of this Touch Zone coordinate system; 2 locality conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction; Two point range conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and within this 4-coordinate is positioned at the second scope of this Touch Zone coordinate system to formed rectangle; 2 mobile conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and this 4-coordinate moves on the second track of this Touch Zone coordinate system formed this rectangle; 2 convergent-divergent conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and this 4-coordinate reaches the 3rd more than scope to the area convergent-divergent of formed this rectangle; And 2 rotating conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and more than this 4-coordinate reaches the first angle to the rotation of formed this rectangle.
Preferably, aforesaid touch control induction device, it more comprises in stop mode, the plurality of touch control induction circuit stops measuring this change amount signal of its respective wire, wherein this touch control induction device is regularly switched to this Passive Mode by this stop mode, when in this Passive Mode, and the judgement of this touch control induction circuit is not while there is no near the Touch Zone this wire of object proximity, and this touch control induction device switches to this stop mode by this Passive Mode.
Preferably, aforesaid touch control induction device, wherein, when in this drive pattern, a plurality of touch control induction circuits of this touch control induction device are mutual capacitance sensing or self-capacitance sensing.
Preferably, aforesaid touch control induction device, wherein when in this Passive Mode, and when a plurality of the second potential change amounts that a plurality of touch control induction circuits of this touch control induction device are responded to are greater than this second critical value, a plurality of touch control induction circuits that this touch control induction device is greater than this second critical value by above-mentioned the second potential change amount classify as at least one connected cluster, in the middle of each connected cluster, can utilize following method one of them for calculating the coordinate position of touch-control: in the middle of this connected cluster, there is maximum the second potential change amount person for coordinate position, and in the middle of this connected cluster, the center of gravity of calculating each second potential change amount is coordinate position.
Preferably, aforesaid touch control induction device, the wire group that wherein these many wires are divided into both direction covers this Touch Zone, and this coordinate position is the coordinate pair corresponding to this both direction.
The object of the invention to solve the technical problems realizes by the following technical solutions again.The invention provides a kind of touch-control sensing system, comprise many wires that cover Touch Zone, and touch control induction device.This touch control induction device comprises a plurality of touch control induction circuits, and the many wires that each touch control induction circuit is used for connecting sequentially arrangement are to measure the change amount signal of this respective wire.When drive pattern, each touch control induction circuit makes its respective wire be coupled to ac potential, when the first potential change amount of the first wire being measured when the first touch control induction circuit is greater than the first critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity.When Passive Mode, each touch control induction circuit makes its respective wire be coupled to DC potential, when the second potential change amount of this first wire being measured when this first touch control induction circuit is greater than the second critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity.When wherein this each touch control induction circuit measures the second above-mentioned potential change amount, do not provide ac potential to this respective wire.
The object of the invention to solve the technical problems realizes again by the following technical solutions.The invention provides a kind of touch control inducing method, be applicable to measure wire in Touch Zone with measurement signal variable quantity.This touch control inducing method comprises and is switched to drive pattern, makes above-mentioned wire be coupled to ac potential, and when the first potential change amount that equivalent measures this wire is greater than the first critical value, judgement has near the Touch Zone this wire of object proximity.This touch control inducing method also comprises and is switched to Passive Mode, makes above-mentioned wire be coupled to DC potential, and when the second potential change amount that equivalent measures this wire is greater than the second critical value, judgement has near the Touch Zone this first wire of object proximity.Wherein, when measuring the second above-mentioned potential change amount, do not provide ac potential to this wire.
The object of the invention to solve the technical problems realizes more by the following technical solutions.The invention provides a kind of touch control inducing method, be applicable on touch control induction device, the many wires that this touch control induction device is used for connecting sequentially arrangement are to measure the change amount signal of these many wires.This touch control inducing method comprises and is switched to drive pattern, makes each above-mentioned wire be coupled to ac potential, and when the first potential change amount that equivalent measures the first wire is greater than the first critical value, judgement has near the Touch Zone this first wire of object proximity.This touch control inducing method also comprises and is switched to Passive Mode, makes each above-mentioned wire be coupled to DC potential, and when the second potential change amount that equivalent measures this first wire is greater than the second critical value, judgement has near the Touch Zone this first wire of object proximity.Wherein, when measuring the second above-mentioned potential change amount, do not provide ac potential to each above-mentioned wire.
By technique scheme, touch control induction circuit of the present invention, device and system and its method of operating at least have following advantages and beneficial effect: by the present invention, can increase the bulk life time of touch control induction device, reduce the probability of the fault that meets accident.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is intelligent mobile phone or the board device of existing known techniques.
Fig. 2 is the constitutional diagram of the capacitance touch control system of existing known techniques.
Fig. 3 is the operator scheme schematic diagram according to the electronic installation of the embodiment of the present invention.
Fig. 4 A is according to the schematic diagram of the touch control induction circuit of the embodiment of the present invention.
Fig. 4 B is in the schematic diagram under Passive Mode for scheming the touch control induction circuit shown in A.
Fig. 4 C is in the schematic diagram under stop mode for scheming the touch control induction circuit shown in A.
Fig. 5 is according to the schematic diagram of touch-control sensing system of the present invention.
Fig. 6 A by under Passive Mode measurement to the schematic diagram of the second potential change amount of each wire.
Fig. 6 B by under Passive Mode measurement to another schematic diagram of the second potential change amount of each wire.
Fig. 7 A is the schematic diagram of single-point touch under Passive Mode.
Fig. 7 B is another schematic diagram of 2 touch-controls under Passive Mode.
Fig. 8 A is according to the schematic flow sheet of a kind of touch control inducing method of the embodiment of the present invention.
Fig. 8 B is according to the schematic flow sheet of the another kind of touch control inducing method of the embodiment of the present invention.
[main element symbol description]
100: device 110: casing
120: touch control screen 130: button
210: drive pattern 220: stop mode
300: Passive Mode 410: touch control induction circuit
412: operator scheme 414: potential change amount
416: ac potential 418: DC potential
420: wire 430: Touch Zone
500: touch-control sensing system 510: touch control induction device
700: Touch Zone 710: coordinate position
720a～720d: coordinate position 810～840: step
Embodiment
It is as follows that the present invention will describe some embodiment in detail.Yet except disclosed embodiment, the embodiment that the present invention can also be used in other widely implements.Scope of the present invention is not subject to the restriction of these embodiment, is be as the criterion with claim thereafter.Even and for providing clearer description those of ordinary skill in the art can understand summary of the invention of the present invention, each several part in diagram is not drawn according to its relative size and ratio, some size is highlighted and the exaggeration that seems with the ratio regular meeting of other scale dependents, and incoherent detail section is not also drawn completely, in the hope of illustrated succinctly understandable.
Please refer to shown in Fig. 3, it is the operator scheme schematic diagram according to the electronic installation of the embodiment of optimal mode of the present invention.Compare with Fig. 2 of prior art, the electronic installation of the present embodiment mainly how a Passive Mode 300.Touch-control system in this Passive Mode 300, the more above-mentioned drive pattern 210 of energy consuming comes less, although more above-mentioned stop mode 220 comes manyly.Compare with Fig. 2 of prior art, some need to be switched to the situation of drive pattern 210, can save electric power with Passive Mode 300.
When after 210 1 periods of standby times, supposing that user does not carry out any input to touch-control system in drive pattern, touch-control system is transformed into Passive Mode 300 to save electric power from drive pattern 210.If in Passive Mode 300, when touch-control system detects object proximity to Touch Zone, can switch back again drive pattern 210.
When after 300 1 periods of standby times, supposing that user does not carry out any input to touch-control system in Passive Mode, touch-control system is transformed into stop mode 220 from Passive Mode 300, to save more electric power.Stop mode 220 can regularly be revived and be returned to Passive Mode 300, to detect the input of user to touch-control system.
After supposing to return to Passive Mode 300, left unused a period of time again, touch-control system equally can be transformed into stop mode 220 from Passive Mode 300.Certainly, at touch-control system during in stop mode 220, suppose that electronic installation received when waking key up or receiving signal of communication, or any while needing user accurately by touch-control system input command, touch-control system can directly be switched to drive pattern 210 from stop mode 220.
Pattern shown in Fig. 3 is switched, and in an embodiment, can be controlled by the software operating system of electronic installation.In other words, the operating system of being carried out by primary processor is all import and export of integration and interrupt event and the processing of timer, and the pattern that touch-control system is controlled in the order that gives touch-control system by primary processor is switched.In another embodiment, due to interrupt event and the processing of all import and exports of the output/input system integration of electronic system and timer, the touch-control system under therefore can directly being controlled it by output/input system carries out pattern switching.
Those having ordinary skill in the art will appreciate that, pattern shown in Fig. 3 is switched can be by the combination of any software, hardware or software and hardware implementation in addition, and is not limited to the present invention.
It is worth mentioning that, if do not consider the faint consumption of electric power, in another embodiment of the present invention, touch-control system can be only in drive pattern 210 and Passive Mode 300 between the two.In this embodiment, touch-control system can sense the incoming event of Touch Zone at any time.
Please refer to shown in Fig. 4 A, it is according to the schematic diagram of the touch control induction circuit of the embodiment of the present invention.This touch control induction circuit 410 is for being connected to the wire 420 that is positioned at Touch Zone 430, and it is for the potential change amount 414 on sensor wire 420, and exported.Each operator scheme 412 one of them meetings shown in Fig. 4 A be imported into from the external world.
In the embodiment shown in Fig. 4 A, the external world makes this touch control induction circuit 410 be in drive pattern.Under drive pattern, this touch control induction circuit 410 makes this wire 420 be coupled to ac potential 416, and when this touch control induction circuit 410 measures when being greater than the first potential change amount of the first critical value, judgement has near the Touch Zone 430 of this wire 420 of object proximity.
Those having ordinary skill in the art will appreciate that, measure the potential change amount of this wire 420, can use differential amplifier (differentialamplifier), integrator (integrator), sample-and-hold circuit (sampleandholdcircuit) etc. element to be combined.Because spiritual emphasis of the present invention is not at element, so no longer described in detail.
Please refer to shown in Fig. 4 B, it is that the touch control induction circuit 410 shown in Fig. 4 A is in the schematic diagram under Passive Mode.Compare with Fig. 4 A, the operator scheme 412 of being imported into by the external world is Passive Mode.Under Passive Mode, this touch control induction circuit 410 makes this wire 420 be coupled to DC potential 418, and when this touch control induction circuit 410 measures when being greater than the second potential change amount of the second critical value, judgement has near the Touch Zone 430 of this wire 420 of object proximity.
In the present embodiment, this touch control induction circuit 410, when measuring the second above-mentioned potential change amount, does not provide ac potential 416 to this wire 420.In an embodiment, above-mentioned DC potential 418 can be earthing potential.In another embodiment, the absolute value of above-mentioned DC potential 418 is lower than the absolute value of ac potential 416.Therefore,, when being in Passive Mode, the electric weight consuming is less than while being in drive pattern.In the embodiment that is earthing potential in DC potential 418, the electric weight consuming may be minimum.More due to the absolute value of above-mentioned DC potential 418 absolute value lower than ac potential 416, corresponding to the second critical value of DC potential 418, be less than the first critical value corresponding to ac potential 416.
When wire is received above-mentioned DC potential 418, if there is user's body part to touch near the Touch Zone 430 of wire 420.Human body itself with current potential the DC potential with above-mentioned 418 is formed to potential difference (PD), when this potential difference (PD) is greater than the second above-mentioned critical value, touch control induction circuit 410 will not be considered as extraneous noise or interference this potential difference (PD), and this potential difference (PD) is considered as to the electronic impulse that cause human body contact Touch Zone 430.
Within particularly modern is in the buildings distributing in civil power or near, these interior of buildings are furnished with the power circuit of transferring electric power mostly.These power circuits tend to the power specification according to various countries, with the alternating current between 100 volts to 240 volts, transmit, and the frequency of interchange approximately drops between 50～60 hertz.So after near the Touch Zone 430 human body touches wire 420, frequency can be about to the alternating current of 50～60 hertz and take on the wire 420 that connects touch control induction circuit 410.
In an embodiment of the present invention, this DC potential 418 is earthing potential, and this second potential change amount is the variable quantity higher than the current potential increase of earthing potential, and wherein the first above-mentioned potential change amount is the variable quantity lower than the current potential minimizing of this ac potential.
In an embodiment of the present invention, when this Passive Mode, and 410 judgements of this touch control induction circuit are while having near the Touch Zone 430 this wire 420 of object proximity, and this touch control induction circuit 410 switches to this drive pattern.
Those having ordinary skill in the art will appreciate that, measure the potential change amount of this wire 420, can use differential amplifier (differentialamplifier), integrator (integrator), sample-and-hold circuit (sampleandholdcircuit) etc. element to be combined.One of feature of the present invention, is the combination that utilizes same set of electronic component, can detect the potential difference (PD) of wire 420 under drive pattern and Passive Mode.
Please refer to shown in Fig. 4 C, it is that the touch control induction circuit 410 shown in Fig. 4 A is in the schematic diagram under stop mode.Compare with Fig. 4 A, the operator scheme 412 of being imported into by the external world is stop mode.Under Passive Mode, this touch control induction circuit 410 makes this wire 420 not be couple to above-mentioned ac potential 416 or DC potential 418.Touch control induction circuit 410 itself does not also carry out the action of any measurement potential difference (PD), so wire 420 and touch control induction circuit 410 consumes power not.
Embodiment shown in Fig. 4 A to Fig. 4 C is mainly to using single touch control induction circuit as explanation.Please refer to now shown in Fig. 5, it is according to the schematic diagram of touch-control sensing system 500 of the present invention.In the middle of Fig. 5, most element is all to continue to use previous label, represents that they have previous said characteristic.
In the middle of above-mentioned touch-control sensing system 500, comprise at least one touch control induction device 510.This touch control induction device 510 comprises a plurality of touch control induction circuits 410, for connecting the central many wires 420 in Touch Zone 430.Although in the middle of Fig. 5, above-mentioned many wires 420 all belong to equidirectional, those having ordinary skill in the art will appreciate that, in the middle of some embodiment, these wires 420 can belong to both direction.For example, belong to the vertical and horizontal direction of quadrature, therefore can form the central coordinate system in Touch Zone 430.Similarly, although in the middle of Fig. 5, each touch control induction circuit 410 is for connecting a corresponding wire 420, but those having ordinary skill in the art will appreciate that, in the middle of some embodiment, single touch control induction circuit 410 can be by connecting selector switch, is connected to many wires 420, and in the mode of timesharing, measures the potential change amount of many wires 420 in the mode of timesharing.
This touch control induction device 510 will receive the signal of operator scheme 412, and similar with the embodiment of Fig. 4 A to Fig. 4 C, operator scheme 412 can be one of three kinds of operator schemes shown in Fig. 3.After this touch control induction device 510 receives the signal of operator scheme 412, will forward this signal to each touch control induction circuit 410.Accordingly, each touch control induction circuit 410 will, according to the function mode of previously mentioned embodiment, carry out the operation under each pattern.
Although Fig. 5 only illustrates the situation that operator scheme is Passive Mode, those of ordinary skill in the art can, according to previously mentioned function mode, understand the function situation under drive pattern and stop mode.Particularly under drive pattern, above-mentioned touch control induction device 510 can be used the method for measurement of self-capacitance (straycapacitance) and mutual capacitance (mutualcapacitance) both one of them.
Please refer to shown in Fig. 6 A, its by under Passive Mode measurement to the schematic diagram of the second potential change amount of each wire.In the middle of Fig. 6 A, each touch control induction circuit 410 of this touch control induction device 510 is with simultaneously or the order of timesharing, and to the second potential change amount that each wire measured that belongs to a direction, as Z-axis, and equidirectional each lead location is as transverse axis.
In the second critical value of the second potential change amount, cut out a horizontal line, the chart that this touch control induction device 510 can utilize Fig. 6 A to make, finds out its potential change amount higher than each wire of above-mentioned the second critical value.Then, these continuously arranged wires are formed at least one cluster.In an embodiment, can select in each cluster, there is this root wire of maximum potential variable quantity, as the coordinate position of this touch-control.In another embodiment, can calculate the centre of gravity place in each cluster by the value of potential change amount, and with this coordinate position as this touch-control.
Those having ordinary skill in the art will appreciate that, although using in the present invention the diagram of Fig. 6 A as example, but this touch control induction device 510 can carry out with other data coding method its corresponding the second potential change amount of the lead location shown in presentation graphs 6A, only need to meet foregoing invention spirit.In the middle of the wire that has both direction covers the embodiment of Touch Zone, this touch control induction device 510 can record respectively the second potential change amount of the wire of this both direction, for finding out the corresponding coordinate position of this both direction.
Please refer to shown in Fig. 6 B, its by under Passive Mode measurement to another schematic diagram of the second potential change amount of each wire.Compare with Fig. 6 A, in the middle of Fig. 6 B, there are two the first cluster and the second clusters that surpass the second critical value.Suppose and have two or more above object contact Touch Zones, will on the wire of a direction, occur corresponding the second potential change amount projection.Identical with the embodiment shown in Fig. 6 A, first find out its potential change amount higher than each wire of above-mentioned the second critical value.Then, these continuously arranged wires are formed to each cluster.Then select in each cluster, there is the wire of maximum potential variable quantity or the centre of gravity place of cluster, as the coordinate position of touch-control event.
Please refer to shown in Fig. 7 A, it is the schematic diagram of single-point touch under Passive Mode.The wire in Touch Zone 700 with vertical and horizontal direction, touch-control sensing system can be used the second potential change amount shown in Fig. 6 A, finds out the coordinate position 710 of vertical and horizontal direction.Accordingly, just can find the coordinate pair that single-point touch event occurs.When produce a certain coordinate to after, touch-control sensing system just can, when the method for measurement of carrying out each time, draw the track of this coordinate to movement.
Please refer to shown in Fig. 7 B, it is another schematic diagram of 2 touch-controls under Passive Mode.Similarly, have the wire of vertical and horizontal direction in Touch Zone 700, touch-control sensing system can be used the second potential change amount shown in Fig. 6 B, finds out the coordinate position of vertical and horizontal direction.Owing to finding two clusters in each direction, so have two coordinate positions in each direction.Therefore in the middle of Fig. 7 B, having four intersection points, is respectively 720a, 720b, 720c and 720d, and these four intersection points will form a rectangle.
Under Passive Mode, the point that user may press is simultaneously cornerwise two points of rectangle for this reason.In other words, when pressing 720a and 720d at 2, maybe, when pressing 720b and 720c at 2, all can produce above-mentioned rectangle.Same as above, touch-control sensing system just can, when the method for measurement of carrying out each time, draw each coordinate to mobile track.When the position of any point changes, the initial rectangular shape producing just may be exaggerated, dwindles, move or rotation.Touch-control sensing system can be learnt the conversion of above-mentioned rectangular shape.
Because the second critical value of Passive Mode is come littlely than the first critical value of drive pattern, therefore under Passive Mode, be also easier to be subject to extraneous interference.For example, in Touch Zone, be superimposed upon in the embodiment on screen, when touch-control sensing system is in Passive Mode but screen opening in the situation that, from the photoelectric interference of screen, probably just broken through the second critical value.Therefore, in an embodiment of the present invention, when being switched to Passive Mode, touch control screen must be in the state of closing, to avoid interference touch-control sensing system.
In order to prevent being often interfered under passive situation, when in this Passive Mode, a plurality of touch control induction circuits 410 judgements of this touch control induction device 510 have near the Touch Zone 430 its respective wire 420 of object proximity, and while meeting following condition one of them or its possible combination, this touch control induction device 510 switches to this drive pattern: single-point locality condition, and wherein this object space is the coordinate pair corresponding to above-mentioned both direction; Single-point range of condition, wherein this object space is this coordinate pair corresponding to above-mentioned both direction, and this coordinate is within being positioned at the first scope of this Touch Zone coordinate system, wherein the first above-mentioned scope can be the right set of arbitrary coordinate in Touch Zone, as left one side of something of Touch Zone, right one side of something, the upper, lower one side of something or centre, the shape of this first scope can be rectangle, circle, pentagon or arbitrary graphic; Single point movement condition, wherein this object space is this coordinate pair corresponding to above-mentioned both direction, and this coordinate to moving in the first track of this Touch Zone coordinate system, wherein the first above-mentioned track can be the right ordered arrangement of arbitrary coordinate in Touch Zone, as the straight line in Touch Zone, curve or broken line, this first track can comprise width, as long as its touch point drops in the width of this first track, just in this first track, moves at last; 2 locality conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction; Two point range conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and within this 4-coordinate is positioned at the second scope of this Touch Zone coordinate system to formed rectangle, wherein the second above-mentioned scope is as the first scope, can be the right set of arbitrary coordinate in Touch Zone, 4-coordinate that only need to this rectangle be interior to falling within this set; 2 mobile conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and this 4-coordinate moves on the second track of this Touch Zone coordinate system formed this rectangle, wherein the second above-mentioned track is as the first track, as long as the 4-coordinate of this rectangle moves falling within the width of this second track, or the central point of this rectangle falls within interior movement of width of this second track, can meet this condition; 2 convergent-divergent conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and this 4-coordinate reaches the 3rd more than scope to the area convergent-divergent of formed this rectangle, wherein the 3rd above-mentioned scope can be special ratios, for example the ratio of area reducing or amplification surpass fifty percent, four one-tenth or three one-tenth; And 2 rotating conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and more than this 4-coordinate reaches the first angle to the rotation of formed this rectangle, wherein the first above-mentioned angle can be any special angle, for example 60 degree, 90 degree or 120 degree.In addition, the first above-mentioned scope, the second scope, the 3rd scope, the first track, the second track, with the embodiment of the first angle the paragraph above described, so at this repeated description not.
Please refer to shown in Fig. 8 A, it is according to the schematic flow sheet of a kind of touch control inducing method of the embodiment of the present invention, is applicable to measure wire in Touch Zone with measurement signal variable quantity.This touch control inducing method comprises step 810, is switched to drive pattern, makes above-mentioned wire be coupled to ac potential, and when the first potential change amount that equivalent measures this wire is greater than the first critical value, judgement has near the Touch Zone this wire of object proximity.This touch control inducing method also comprises step 820, is switched to Passive Mode, makes above-mentioned wire be coupled to DC potential, and when the second potential change amount that equivalent measures this wire is greater than the second critical value, judgement has near the Touch Zone this first wire of object proximity.Wherein, when measuring the second above-mentioned potential change amount, do not provide ac potential to this wire.
Please refer to shown in Fig. 8 B, it is according to the schematic flow sheet of the another kind of touch control inducing method of the embodiment of the present invention, be applicable on touch control induction device, the many wires that this touch control induction device is used for connecting sequentially arrangement are to measure the change amount signal of these many wires.This touch control inducing method comprises step 830, be switched to drive pattern, make each above-mentioned wire be coupled to ac potential, when the first potential change amount that equivalent measures the first wire is greater than the first critical value, judgement has near the Touch Zone this first wire of object proximity.This touch control inducing method also comprises step 840, be switched to Passive Mode, make each above-mentioned wire be coupled to DC potential, when the second potential change amount that equivalent measures this first wire is greater than the second critical value, judgement has near the Touch Zone this first wire of object proximity.Wherein, when measuring the second above-mentioned potential change amount, do not provide ac potential to each above-mentioned wire.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (18)
1. a touch control induction circuit, is connected to wire in Touch Zone with measurement signal variable quantity, it is characterized in that wherein above-mentioned touch control induction circuit:
When drive pattern, this touch control induction circuit makes this wire be coupled to ac potential, and when this touch control induction circuit measures the first potential change amount that is greater than the first critical value, judgement has near the Touch Zone this wire of object proximity; And
When Passive Mode, this touch control induction circuit makes this wire be coupled to DC potential, when this touch control induction circuit measures the second potential change amount that is greater than the second critical value, judgement has near the Touch Zone this wire of object proximity, when wherein this touch control induction circuit measures the second above-mentioned potential change amount, do not provide ac potential to this wire.
2. touch control induction circuit as claimed in claim 1, it is characterized in that wherein this DC potential is earthing potential, this the second potential change amount is the variable quantity higher than the current potential increase of earthing potential, and wherein the first above-mentioned potential change amount is the variable quantity lower than the current potential minimizing of this ac potential.
3. touch control induction circuit as claimed in claim 1, is characterized in that the first wherein above-mentioned critical value is greater than this second critical value.
4. touch control induction circuit as claimed in claim 1, is characterized in that wherein when in this Passive Mode, and this touch control induction circuit judgement is while having near the Touch Zone this wire of object proximity, and this touch control induction circuit switches to this drive pattern.
5. touch control induction circuit as claimed in claim 1, it is characterized in that it more comprises in stop mode, this touch control induction circuit stops measuring this change amount signal of this wire, wherein this touch control induction circuit is regularly switched to this Passive Mode by this stop mode, when in this Passive Mode, and when this touch control induction circuit judgement does not have near the Touch Zone this wire of object proximity, this touch control induction circuit switches to this stop mode by this Passive Mode.
6. a touch control induction device, comprises a plurality of touch control induction circuits, and the many wires that each touch control induction circuit is used for connecting sequentially arrangement, to measure the change amount signal of this respective wire, is characterized in that wherein above-mentioned touch control induction device:
When drive pattern, each touch control induction circuit makes its respective wire be coupled to ac potential, when the first potential change amount of the first wire being measured when the first touch control induction circuit is greater than the first critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity; And
When Passive Mode, each touch control induction circuit makes its respective wire be coupled to DC potential, when the second potential change amount of this first wire being measured when this first touch control induction circuit is greater than the second critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity, when wherein this each touch control induction circuit measures the second above-mentioned potential change amount, do not provide ac potential to this respective wire.
7. touch control induction device as claimed in claim 6, it is characterized in that wherein this DC potential is earthing potential, this the second potential change amount is the variable quantity higher than the current potential increase of earthing potential, and wherein the first above-mentioned potential change amount is the variable quantity lower than the current potential minimizing of this ac potential.
8. touch control induction device as claimed in claim 6, is characterized in that the first wherein above-mentioned critical value is greater than this second critical value.
9. touch control induction device as claimed in claim 6, is characterized in that wherein when in this Passive Mode, and this touch control induction circuit judgement is while having near the Touch Zone this first wire of object proximity, and this touch control induction device switches to this drive pattern.
10. touch control induction device as claimed in claim 6, it is characterized in that wherein when in this Passive Mode, and when a plurality of touch control induction circuit judgements of this touch control induction device have near the Touch Zone its respective wire of object proximity, this touch control induction device switches to this drive pattern.
11. touch control induction devices as claimed in claim 6, it is characterized in that the wire group that these many wires are wherein divided into both direction covers this Touch Zone, when in this Passive Mode, a plurality of touch control induction circuit judgements of this touch control induction device have near the Touch Zone its respective wire of object proximity, and while meeting following condition one of them or its possible combination, this touch control induction device switches to this drive pattern:
Single-point locality condition, wherein this object space is the coordinate pair corresponding to above-mentioned both direction;
Single-point range of condition, wherein this object space is this coordinate pair corresponding to above-mentioned both direction, and this coordinate is within being positioned at the first scope of this Touch Zone coordinate system;
Single point movement condition, wherein this object space is this coordinate pair corresponding to above-mentioned both direction, and this coordinate to moving in the first track of this Touch Zone coordinate system;
2 locality conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction;
Two point range conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and within this 4-coordinate is positioned at the second scope of this Touch Zone coordinate system to formed rectangle;
2 mobile conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and this 4-coordinate moves on the second track of this Touch Zone coordinate system formed this rectangle;
2 convergent-divergent conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and this 4-coordinate reaches the 3rd more than scope to the area convergent-divergent of formed this rectangle; And
2 rotating conditions, wherein this object space comprises the 4-coordinate pair corresponding to above-mentioned both direction, and more than this 4-coordinate reaches the first angle to the rotation of formed this rectangle.
12. touch control induction devices as claimed in claim 6, it is characterized in that it more comprises in stop mode, the plurality of touch control induction circuit stops measuring this change amount signal of its respective wire, wherein this touch control induction device is regularly switched to this Passive Mode by this stop mode, when in this Passive Mode, and when this touch control induction circuit judgement does not have near the Touch Zone this wire of object proximity, this touch control induction device switches to this stop mode by this Passive Mode.
13. touch control induction devices as claimed in claim 6, is characterized in that wherein, when in this drive pattern, a plurality of touch control induction circuits of this touch control induction device are mutual capacitance sensing or self-capacitance sensing.
14. touch control induction devices as claimed in claim 6, it is characterized in that wherein when in this Passive Mode, and when a plurality of the second potential change amounts that a plurality of touch control induction circuits of this touch control induction device are responded to are greater than this second critical value, a plurality of touch control induction circuits that this touch control induction device is greater than this second critical value by above-mentioned the second potential change amount classify as at least one connected cluster, in the middle of each connected cluster, can utilize following method one of them for calculating the coordinate position of touch-control:
In the middle of this connected cluster, there is maximum the second potential change amount person for coordinate position; And
In the middle of this connected cluster, the center of gravity of calculating each second potential change amount is coordinate position.
15. touch control induction devices as claimed in claim 14, is characterized in that the wire group that these many wires are wherein divided into both direction covers this Touch Zone, and this coordinate position is the coordinate pair corresponding to this both direction.
16. 1 kinds of touch-control sensing systems, is characterized in that it comprises:
Cover many wires of Touch Zone; And
Touch control induction device, wherein comprises a plurality of touch control induction circuits, and each touch control induction circuit is for connecting sequentially many wires arranging to measure the change amount signal of this respective wire, wherein above-mentioned touch control induction device:
When drive pattern, each touch control induction circuit makes its respective wire be coupled to ac potential, when the first potential change amount of the first wire being measured when the first touch control induction circuit is greater than the first critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity; And
When Passive Mode, each touch control induction circuit makes its respective wire be coupled to DC potential, when the second potential change amount of this first wire being measured when this first touch control induction circuit is greater than the second critical value, this touch control induction device judgement has near the Touch Zone this first wire of object proximity, when wherein this each touch control induction circuit measures the second above-mentioned potential change amount, do not provide ac potential to this respective wire.
17. 1 kinds of touch control inducing methods, are applicable to measure wire in Touch Zone with measurement signal variable quantity, it is characterized in that this touch control inducing method comprises:
Be switched to drive pattern, make above-mentioned wire be coupled to ac potential, when the first potential change amount that equivalent measures this wire is greater than the first critical value, judgement has near the Touch Zone this wire of object proximity; And
Be switched to Passive Mode, make above-mentioned wire be coupled to DC potential, when the second potential change amount that equivalent measures this wire is greater than the second critical value, judgement has near the Touch Zone this wire of object proximity, wherein, when measuring the second above-mentioned potential change amount, do not provide ac potential to this wire.
18. 1 kinds of touch control inducing methods, are applicable on touch control induction device, and the many wires that this touch control induction device is used for connecting sequentially arrangement, to measure the change amount signal of these many wires, is characterized in that this touch control inducing method comprises:
Be switched to drive pattern, make each above-mentioned wire be coupled to ac potential, when the first potential change amount that equivalent measures the first wire is greater than the first critical value, judgement has near the Touch Zone this first wire of object proximity; And
Be switched to Passive Mode, make each above-mentioned wire be coupled to DC potential, when the second potential change amount that equivalent measures this first wire is greater than the second critical value, judgement has near the Touch Zone this first wire of object proximity, wherein, when measuring the second above-mentioned potential change amount, do not provide ac potential to each above-mentioned wire.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060244733A1 (en) * | 2005-04-28 | 2006-11-02 | Geaghan Bernard O | Touch sensitive device and method using pre-touch information |
| CN101583923A (en) * | 2007-01-03 | 2009-11-18 | 苹果公司 | Multi-touch auto scanning |
| CN101598986A (en) * | 2008-06-03 | 2009-12-09 | 联咏科技股份有限公司 | Can save the touch detection device of electrical source consumption |
| CN102799306A (en) * | 2011-04-13 | 2012-11-28 | 索尼公司 | Display panel, method of driving the same, driving circuit, and electronic unit |
-
2013
- 2013-01-28 CN CN201310032010.9A patent/CN103970316B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060244733A1 (en) * | 2005-04-28 | 2006-11-02 | Geaghan Bernard O | Touch sensitive device and method using pre-touch information |
| CN101583923A (en) * | 2007-01-03 | 2009-11-18 | 苹果公司 | Multi-touch auto scanning |
| CN101598986A (en) * | 2008-06-03 | 2009-12-09 | 联咏科技股份有限公司 | Can save the touch detection device of electrical source consumption |
| CN102799306A (en) * | 2011-04-13 | 2012-11-28 | 索尼公司 | Display panel, method of driving the same, driving circuit, and electronic unit |
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