CN103995624B - A kind of method and device of antinoise signal interference - Google Patents
A kind of method and device of antinoise signal interference Download PDFInfo
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- CN103995624B CN103995624B CN201410224826.6A CN201410224826A CN103995624B CN 103995624 B CN103995624 B CN 103995624B CN 201410224826 A CN201410224826 A CN 201410224826A CN 103995624 B CN103995624 B CN 103995624B
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Abstract
The embodiment of the invention discloses a kind of method and device of antinoise signal interference, it is related to touch-screen field, to improve the accuracy that touch-screen is responded according to the position for touching body touch, so as to improve Consumer's Experience.Methods described includes：Obtain the sampled signal of at least one signal receiving unit, according to the environmental disturbances signal of at least one signal receiving unit obtained in advance, the environmental disturbances signal in the sampled signal of at least one signal receiving unit is eliminated, the useful signal of at least one signal receiving unit is obtained.According to the useful signal of at least one signal receiving unit, the position of touch point number and touch point is determined.The present invention is applied to the scene of touch-screen filtering environmental interference signal.
Description
Technical field
The present invention relates to the method and device in touch-screen field, more particularly to a kind of interference of antinoise signal.
Background technology
In recent years, infrared touch panel is so that its is simple in construction, not by electric current, voltage and electrostatic interference, with high stability, height
Resolution ratio and it is easy for installation the advantages of, the main product as touch-screen market.Infrared signal touch-screen is by installed in screen week
The circuit board and infrared signal transmitting tube and IR signal reception on circuit board transverse and longitudinal direction arranged on the housing that encloses, housing
Pipe is constituted.Wherein, infrared signal transmitting tube and IR signal reception pipe are corresponded, and infrared signal transmitting tube launches infrared
Signal so that constitute the infrared signal matrix that transverse and longitudinal is intersected on circuit boards.When infrared touch panel works, mainly use in horizontal stroke
The infrared signal matrix gathered on longitudinal direction touches the touch of body to detect, i.e., when a certain position of touch body touch touch-screen,
Touch the infrared signal that body has blocked the transverse and longitudinal direction by the position so that the IR signal reception pipe of correspondence position can not connect
Receive infrared signal.When the semaphore received in all IR signal reception pipes reports main frame, touched due to touching body
Infrared touch panel is almost nil without receiving the semaphore that the IR signal reception pipe of infrared signal is sent to main frame.And just
The IR signal reception pipe of infrared signal is often received, the semaphore sent to main frame is not zero.Now main frame can be according to connecing
The semaphore that the IR signal reception pipe of receipts is sent judges the number of touch point and the position of place screen.
However, include infrared signal composition in ambient light signal, and particularly when sunlight irradiates, infrared letter in ambient light
Number composition is higher, as shown in figure 1, when touching body and touching touch-screen, touching body and although having blocked part infrared signal transmitting tube
The infrared signal launched, but the angle of infrared signal is random and existed in real time in ambient light signal so that it is blocked
The corresponding IR signal reception pipe of partial infrared signal transmitting tube can still receive the infrared signal in ambient light signal, institute
It is not zero with the semaphore that the part IR signal reception pipe is sent to main frame.Now main frame is according to the signal being not zero of reception
Amount determines the touch point information of touch-screen.Because the infrared signal that infrared transmitting tube is launched is blocked by touch body, therefore its
The infrared signal that corresponding part IR signal reception pipe is received is the infrared signal in ambient light signal, is not infrared transmitting tube
The infrared signal of transmitting, that is to say, that what its corresponding part IR signal reception pipe was received is interference signal, and the part is infrared
The semaphore being not zero that signal reception pipe is sent to main frame is also the semaphore of interference, and the semaphore of this interference of host computer enters
When row touch point information judges, main frame can be caused to judge touch point information by accident, influence touch-screen enters according to the position for touching body touch
The accuracy of row response, reduces Consumer's Experience.
In the prior art, a kind of hardware antinoise signal disturber is proposed in order to solve the problem of touch-screen ambient signal is disturbed
Method.Hardware antinoise signal interference method is mainly disturbed by the design of touch-screen hardware circuit come filtering environmental signal.Typically
Environment resistant signal interference circuit is devised on hardware circuit, controls infrared signal transmitting tube to launch infrared letter by hardware circuit
Number frequency, the different letters of frequency for launching infrared signal in ambient light signal from infrared transmitting tube are filtered out using filter circuit
Number.But in the art, if infrared signal frequency and infrared transmitting tube in ambient light signal launch the frequency phase of infrared signal
Together, the infrared signal in ambient light signal can not now be filtered out by filter circuit.When touching body touch touch-screen, touch
Touch body and although blocked the infrared signal that part infrared signal transmitting tube is launched, due to the infrared signal frequency in ambient light signal
The frequency identical signal of rate and infrared transmitting tube transmitting infrared signal exists in real time so that be blocked the infrared letter of part
Number corresponding IR signal reception pipe of transmitting tube can still receive the infrared signal in ambient light signal, so the part is infrared
The semaphore that signal reception pipe is sent to main frame is not zero.Now main frame determines touch according to the semaphore being not zero of reception
The touch point information of screen.Because the infrared signal that infrared transmitting tube is launched is blocked by touch body, therefore its corresponding part is red
The infrared signal that external signal reception pipe is received is the infrared signal in ambient light signal, is not the infrared letter of infrared transmitting tube transmitting
Number, that is to say, that what its corresponding part IR signal reception pipe was received is interference signal, the part IR signal reception pipe to
The semaphore being not zero that main frame is sent is also the semaphore of interference, and the semaphore of this interference of host computer carries out touch point information
During judgement, main frame can be caused to judge touch point information by accident, it is accurate that the position that influence touch-screen is touched according to touch body is responded
Property, reduce Consumer's Experience.
The content of the invention
The present invention provides a kind of method and device of antinoise signal interference, by filtering out environmental disturbances signal, to improve
The accuracy that touch-screen is responded according to the position for touching body touch, so as to improve Consumer's Experience.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
In a first aspect, the embodiments of the invention provide a kind of method of antinoise signal interference, it is described to touch applied to touching device
Touching device includes：At least one signal receiving unit and at least one signal transmitter unit, methods described include：Obtain at least one
The sampled signal of individual signal receiving unit, the sampled signal includes environmental disturbances signal and/or useful signal, effective letter
Number it is to be launched by least one signal transmitter unit, the signal for determining touch point relevant information.Wherein, environmental disturbances are believed
Number it is to determining that the touch point relevant information produces the signal of interference according to useful signal.According at least one obtained in advance
The environmental disturbances signal of signal receiving unit, eliminates the environmental disturbances in the sampled signal of at least one signal receiving unit
Signal, obtains the useful signal of at least one signal receiving unit.It is effective according at least one described signal receiving unit
Signal, determines the position of touch point number and touch point.
Second aspect, the invention provides a kind of touching device, the touching device includes：At least one signal receives single
Member, at least one signal transmitter unit, acquiring unit, processing unit and determining unit.At least one described signal transmitter unit,
For sending useful signal to signal receiving unit.The useful signal is the letter of at least one signal transmitter unit transmitting
Number.At least one described signal receiving unit, for receiving sampled signal.The sampled signal is to be used to determine that touch point is related
The signal of information.The sampled signal includes environmental disturbances signal and/or useful signal.The environmental disturbances signal is to basis
Useful signal determines that the touch point relevant information produces the signal of interference.The acquiring unit, for obtaining described at least one
The sampled signal of individual signal receiving unit.The processing unit, for according at least one signal receiving unit obtained in advance
Environmental disturbances signal, eliminate the environmental disturbances signal in the sampled signal of at least one signal receiving unit, obtain institute
State the useful signal of at least one signal receiving unit.The determining unit, for receiving single according at least one described signal
The useful signal of member, determines the position of touch point number and touch point.
The invention provides a kind of method and device of antinoise signal interference, the sampling of at least one signal receiving unit is obtained
Signal, the sampled signal includes environmental disturbances signal and/or useful signal, and the useful signal is sent out by least one signal
Penetrate unit transmitting, the signal for determining touch point relevant information.Wherein, environmental disturbances signal is to true according to useful signal
The fixed touch point relevant information produces the signal of interference.It is dry according to the environment of at least one signal receiving unit obtained in advance
Disturb signal, eliminate the environmental disturbances signal in the sampled signal of at least one signal receiving unit, obtain described at least one
The useful signal of individual signal receiving unit.According at least one described signal receiving unit useful signal, touch point number is determined
And the position of touch point.So, when getting the sampled signal of signal receiving unit, obtained using this signal receiving unit
Environmental disturbances signal, the environmental disturbances signal included in the sampled signal that this signal receiving unit is obtained eliminates so that
The useful signal of signal receiving unit is got, so as to using the useful signal of signal receiving unit, determine the position of touch point
Put and number, reduce the possibility of the position that touch screen point is determined according to environmental disturbances signal and number, as by that will sample
Environmental disturbances target signal filter in signal falls, and reduces the erroneous judgement possibility of touch point, and then realizes by filtering out environment
Interference signal, improves the accuracy that touch-screen is responded according to the position for touching body touch, so as to improve Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Judge schematic diagram by accident in contact under a kind of signal interference that Fig. 1 provides for background of invention；
Fig. 2 is a kind of antinoise signal interference method flow chart provided in an embodiment of the present invention；
Fig. 3 is another antinoise signal interference method flow chart provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of touching device provided in an embodiment of the present invention；
Fig. 5 is the structural representation of another touching device provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiments of the invention provide a kind of method of antinoise signal interference, applied on touching device, the touching device
Including at least one signal receiving unit and at least one signal transmitter unit.
It should be noted that this touching device can be infrared touching device, now, signal transmitter unit refers to infrared touch
The infrared signal transmitting tube in device is touched, signal receiving unit refers to the IR signal reception pipe in infrared touching device, in reality
In the application of border, the number of infrared signal transmitting tube and IR signal reception pipe is determined according to the size of touch-screen.
It should be noted that this touching device can be other touching devices, the present invention is not limited to touching device.
As shown in Fig. 2 methods described includes：
201st, the sampled signal of at least one signal receiving unit is obtained.
Wherein, the sampled signal is the signal for determining touch point relevant information.The sampled signal includes environment
Interference signal and/or useful signal；The useful signal is the signal of at least one signal transmitter unit transmitting.The ring
Border interference signal is to determining that the touch point relevant information produces the signal of interference according to useful signal.
Optionally, the sampled signal includes：Infrared sampled signal, now the environmental disturbances signal include：Environment is red
Outer interference signal.
It should be noted that sampled signal can also be other signals, now, environmental disturbances signal is and sampled signal phase
Corresponding interference signal, the present invention is without limitation.
Specifically, touching device open signal transmitter unit and corresponding signal receiving unit successively, by being connect in signal
Receive and sampled on unit, obtain the sampled signal of signal receiving unit.
It should be noted that when no touch body touches touching device, signal receiving unit can receive signal hair
The useful signal of unit transmitting is penetrated, and the environmental disturbances signal in ambient light signal can also be received, now touching device
The sampled signal of acquisition includes useful signal and environmental disturbances signal.When there is touch body to touch touching device, due to touching body
The useful signal of part signal transmitter unit transmitting is blocked, so that its corresponding signal receiving unit can not receive this hair
The useful signal of unit transmitting is penetrated, the environmental disturbances signal in ambient light signal can only be received, now touching device passes through upper
The sampled signal for stating the acquisition of part signal receiving unit only includes environmental disturbances signal.And the signal that other are not blocked by touch body
The useful signal of transmitter unit transmitting can be received by its corresponding signal receiving unit, now other signals of touching device
The sampled signal that receiving unit is obtained includes useful signal and environmental disturbances signal.
202nd, according to the environmental disturbances signal of at least one signal receiving unit obtained in advance, eliminate it is described at least one
Environmental disturbances signal in the sampled signal of signal receiving unit, obtains effective letter of at least one signal receiving unit
Number.
Specifically, touching device is after the sampled signal of at least one signal receiving unit is obtained, due to sampled signal
In may include environmental disturbances signal, at this point it is possible to dry according to the environment of at least one signal receiving unit obtained in advance
Signal is disturbed, the environmental disturbances signal in the sampled signal that at least one signal receiving unit is obtained is eliminated, so as to obtain
Get the useful signal of at least one signal receiving unit.
It should be noted that environmental disturbances signal is obtained in advance before sampled signal is obtained.
Further, when no touch body touches touching device, the sampling that at least one signal receiving unit is received
Signal includes the signal and environmental disturbances signal that signal transmitter unit is launched, and touching device receives single at least one described signal
Environmental disturbances signal is eliminated in the sampled signal that member is obtained, the useful signal of at least one signal receiving unit is got.
Because no touch body touches touching device, so at least one signal receiving unit can receive useful signal, wherein
The useful signal of signal receiving unit is the signal of corresponding signal transmitter unit transmitting, so at least one signal receiving unit
The useful signal of acquisition is not zero.
When there is touch body to touch touching device, the signal of part signal transmitter unit transmitting has been blocked due to touching body,
So that the corresponding part signal receiving unit of the part signal transmitter unit being blocked can only receive environmental disturbances signal, this
When touching device in this section signal receiving unit obtain sampled signal in eliminate environmental disturbances signal after, this part of acquisition
The useful signal of signal receiving unit is almost nil.And other corresponding signals of signal transmitter unit not blocked by touch body connect
The useful signal for receiving unit acquisition is not zero.
203rd, according to the useful signal of at least one signal receiving unit, the position of touch point number and touch point is determined
Put.
, can be according to presetting specifically, touching device gets the useful signal of at least one signal receiving unit
Signal threshold value be compared, so as to determine whether the corresponding position of this signal receiving unit has tactile according to comparative result
Touch a little, and then determine the number of touch point and the position of touch point.
When useful signal is more than or equal to this signal threshold value, then it can determine not touched by touch body herein, be
Determine herein without touch point.When useful signal is less than this signal threshold value, then it can determine to be touched by touch body herein,
As determine has touch point herein, and records its position.Utilize the above method, it may be determined that go out number and the touch of touch point
The position of point.
It should be noted that signal threshold value is pre-set, its value is more than the useful signal that signal transmitter unit is launched
When being blocked, the useful signal that its corresponding signal receiving unit is received；Less than signal transmitter unit launch signal not by
When blocking, the useful signal that its corresponding signal receiving unit is received.
It is preferred that, when the value of signal threshold value is not blocked for the useful signal that signal transmitter unit is launched, its is corresponding
The 50% of the useful signal that signal receiving unit is received.
It should be noted that the useful signal received according to signal receiving unit determines the number of current touch point and touched
The method for touching a position can also be other method, and the signal for example received in the prior art according to signal receiving unit determines to work as
The number of preceding touch point and the method for touch point position are identical, the invention is not limited in this regard.
The invention provides a kind of method of antinoise signal interference, the sampled signal of at least one signal receiving unit is obtained,
The sampled signal includes environmental disturbances signal and/or useful signal, and the useful signal is to launch single by least one signal
Member transmitting, the signal for determining touch point relevant information.Wherein, environmental disturbances signal is to determining institute according to useful signal
State the signal that touch point relevant information produces interference.Believed according to the environmental disturbances of at least one signal receiving unit obtained in advance
Number, the environmental disturbances signal in the sampled signal of at least one signal receiving unit is eliminated, at least one described letter is obtained
The useful signal of number receiving unit.According at least one described signal receiving unit useful signal, determine touch point number and touch
Touch position a little.So, when getting the sampled signal of signal receiving unit, the ring obtained using this signal receiving unit
The environmental disturbances signal included in border interference signal, the sampled signal that this signal receiving unit is obtained is eliminated, so as to obtain
To the useful signal of signal receiving unit so that using the useful signal of signal receiving unit, determine touch point position and
Number, reduces the possibility of the position that touch screen point is determined according to environmental disturbances signal and number, is by by sampled signal
In environmental disturbances target signal filter fall, reduce the erroneous judgement possibility of touch point, and then realize by filtering out environmental disturbances
Signal, improves the accuracy that touch-screen is responded according to the position for touching body touch, so as to improve Consumer's Experience.
The embodiments of the invention provide a kind of method of antinoise signal interference, as shown in figure 3, including：
301st, the environmental disturbances signal of at least one signal receiving unit is obtained.
Specifically, touching device can not launch the situation of useful signal at least one described signal transmitter unit
Under, obtain the environmental disturbances signal of at least one signal receiving unit.
That is, touching device is by closing all signal transmitter units, then open all signal receiving units successively,
Now, because all signal transmitter units are closed, not transmission signal, so can not have useful signal, such signal is received
Unit can not receive useful signal.But there is the environmental disturbances signal in ambient light, signal receiving unit can be received
This environmental disturbances signal.So in the case where at least one described signal transmitter unit does not launch useful signal, signal connects
The signal that receipts unit is received is exactly environmental disturbances signal, without useful signal.
It should be noted that touching device can obtain each signal receiving unit at least one signal receiving unit
Environmental disturbances signal, can also fetching portion signal receiving unit environmental disturbances signal, the present invention it is without limitation.
Further, when touching device needs the environmental disturbances signal for obtaining multiple signal receiving units, it is possible to use
The above method obtains the environmental disturbances signal of each signal receiving unit in multiple signal receiving units.
Or, at least one signal receiving unit can be also grouped by touching device, so as to obtain every in units of group
The environmental disturbances signal of group signal receiving unit.Specific method is as follows：
, will described at least one signal receiving unit point when the number of at least one signal receiving unit is more than 1
To include F signal receiving unit in E group, and each group.Do not launch effectively at least one described signal transmitter unit
In the case of signal, the environmental disturbances signal for i-th of the signal receiving unit each organized in E group is obtained.By in the E group
The environmental disturbances signal for i-th of the signal receiving unit each organized works as previous ring as the signal receiving unit in respective group
Border interference signal.
Wherein, E is integer more than 0, and F is the integer more than 0, and E and F product is N, N represent it is described at least one
The number of signal receiving unit, and N is the integer i=1,2 ... ..., F more than 1.
That is, touching device needs to obtain the environmental disturbances signal of N number of signal receiving unit, N number of signal is received
Unit is divided into E group, and each group includes F signal receiving unit.Some signal that each group obtains can be connect
The environmental disturbances signal for receiving unit is used as the environmental disturbances signal of each signal receiving unit of whole group.It is preferred that, can be with
Obtain the environmental disturbances of centre position or the signal receiving unit close to centre position in each F signal receiving unit of group
Signal, using this environmental disturbances signal as the signal receiving unit in whole group environmental disturbances signal.By this method,
The environmental disturbances signal of E signal receiving unit of acquisition can only be needed, you can know the environmental disturbances of all signal receiving units
Signal, and then can reduce the sampling time.
It should be noted that touching device can also obtain the ring of at least one signal receiving unit with other method
Border interference signal, the present invention is without limitation.
302nd, the environmental disturbances signal interconversion rate of at least one signal receiving unit is obtained.
It should be noted that environmental disturbances change rate signal be used to indicate that signal receiving unit receives when previous
The situation of environmental disturbances signal and last environmental disturbances signal intensity speed.The larger expression of environmental disturbances change rate signal is worked as
Preceding environment interference signal change is rapid, and environmental disturbances change rate signal is smaller to represent that the change of current environment interference signal is slow.
It should be noted that last environmental disturbances signal is when the previous secondary environment of previous environmental disturbances signal is done
Disturb signal.If for example, when previous environmental disturbances signal is the environmental disturbances signal of the 3rd acquisition, then last environment
Interference signal is the environmental disturbances signal of the 2nd acquisition.
Specifically, obtaining the method for the environmental disturbances signal interconversion rate of at least one signal receiving unit is：According to
The last environmental disturbances signal of at least one signal receiving unit, and at least one signal receiving unit when previous
Environmental disturbances signal, obtain the environmental disturbances signal interconversion rate of at least one signal receiving unit.
That is, obtain at least one signal receiving unit when previous environmental disturbances signal after, Ke Yili
With its last environmental disturbances signal with when previous environmental disturbances signal, obtaining and working as previous environmental disturbances signal and upper one
Difference or ratio between secondary environmental disturbances signal, are used as the environmental disturbances signal interconversion rate of at least one signal receiving unit.
It should be noted that can also be according to when previous environmental disturbances signal and last environmental disturbances signal, profit
Environmental disturbances signal interconversion rate is obtained with other method, the present invention is without limitation.
It is preferred that, can be according to formulaObtain the environmental disturbances letter of at least one signal receiving unit
Number interconversion rate.
Wherein, P represents environmental disturbances signal interconversion rate, V2Represent first environment interference signal；V1Represent second environment interference
Signal.VeRepresent the useful signal of signal receiving unit.
The first environment interference signal is that at least one described signal receiving unit obtains the second environment interference letter
The environmental disturbances signal obtained after number.
That is, first environment interference signal is obtained after second environment interference signal is obtained.If for example,
One environmental disturbances signal is the environmental disturbances signal that third time is obtained, then second of the acquisition of second environment interference signal
Environmental disturbances signal.
It should be noted that VeThe useful signal of signal receiving unit is represented, is letter corresponding with signal receiving unit
The signal that number transmitter unit is launched.The signal of signal transmitter unit transmitting is determined by the physical characteristic of signal transmitter unit
, it is believed that the signal of each signal transmitter unit transmitting is certain, thus may determine that corresponding each signal receiving unit
VeFor constant.
The useful signal V of signal receiving unite, first environment interference signal V2With second environment interference signal V1It is corresponding
Signal receiving unit be same signal receiving unit.Therefore, touching device can calculate signal according to above-mentioned formula and connect
Receive the environmental disturbances signal interconversion rate of unit, the number and the number of signal receiving unit of the environmental disturbances signal interconversion rate calculated
Mesh is identical.
If it should be noted that the environmental disturbances signal obtained for the first time is that first environment interference signal is, now, not having
Second environment interference signal, it is impossible to obtain environmental disturbances signal interconversion rate by the above method, then can pre-set environment and do
Disturb signal interconversion rate.
303rd, according to the environmental disturbances signal interconversion rate of at least one signal receiving unit, the sampling time of adjustment first
Number.
Wherein, first sampling number be obtain environmental disturbances signal twice when, the acquisition sampled signal at interval
Number of times.For example, the first sampling number is 10, then obtaining needs between environmental disturbances signal to obtain 10 sampled signals twice.
It should be noted that within a certain period of time, if the first sampling number sets excessive, as obtaining sampled signal
Number of times set it is excessive, obtain environmental disturbances signal number of times set it is too small when, when environmental change is rapid, make touching device
Vertiginous environmental disturbances signal can not be sampled in time, due to having little time to carry out the environmental disturbances signal of change and
Shi Gengxin, can cause to eliminate the blunt phenomenon of environmental disturbances signal.Within a certain period of time, if the first sampling number was set
It is small, as obtain signal sampling number of times set it is too small, obtain environmental disturbances signal sampling number set it is excessive when, compared with
Multiple acquisition environmental disturbances signal can influence the judgement of touch point and the time of touch point position output, can go out touching device
The phenomenon of existing " interim card ".So it is accomplished by the timing of change one of touching device according to the situation of change of environmental disturbances signal adaptively
The interior number of times for obtaining sampled signal, as adjusts the first sampling number, makes it with the situation of change real-time update of environment.
Specifically, according to the environmental disturbances signal interconversion rate of at least one signal receiving unit, adjustment first is sampled
The method of number of times is as follows：
It is determined that in the environmental disturbances signal interconversion rate of at least one signal receiving unit, thering is at least m signal to connect
When the environmental disturbances signal interconversion rate for receiving unit is all higher than the first preset value, according to the second preset value, first sampling is adjusted
Number of times.
Wherein, the first sampling number after adjustment is less than the first sampling number before adjustment；M is, more than 0, and to be less than or equal to
N integer；N represents the number of at least one signal receiving unit.
Specifically, touching device is according to the 302 environmental disturbances signal interconversion rates for calculating N number of signal receiving unit, at this
In a little environmental disturbances signal interconversion rates, if the environmental disturbances signal interconversion rate not less than m signal receiving unit is all higher than
First preset value, indicating now environmental disturbances signal intensity, rapidly, then touching device determines to need to increase environmental disturbances signal
Sampling number carry out the vertiginous environmental disturbances signal of real-time update.Within a certain period of time, sampled signal is obtained by reducing
Number of times come realize increase environmental disturbances signal sampling number of times, the first sampling number can be subtracted the second preset value, from
And adjust the first sampling number.
It should be noted that the first preset value refers to acceptable environmental disturbances signal interconversion rate, be it is set in advance,
And the setting range of the first preset value is 0%~100%.Second preset value refers to the change of the first sampling number of adjustment every time
Amount, this number of times variable quantity is also what is pre-set.
Exemplary, it is assumed that touching device has 10 signal receiving units, and the first preset value is 40%, and the second preset value is
10, the first sampling number is 100, and when the environmental disturbances signal interconversion rate value for having the signal receiving unit not less than 3 is big
When the first preset value, show that now environmental disturbances signal intensity is rapid.If the environment for calculating 10 signal receiving units is done
Disturb signal interconversion rate respectively p1、p2、p3…p10, wherein there is 6 p1、p2、p4、p6、p9And p10Both greater than 40%, it may be determined that when
Preceding environment interference signal change is rapid, then touching device determines that the sampling number for needing to increase environmental disturbances signal carrys out real-time update
Vertiginous environmental disturbances signal.The first sampling number after so adjusting is to subtract the second preset value by first time hits
Obtain, as 100 subtract 10, it is 90 to get the first sampling number.
It is determined that at least one described signal receiving unit each signal receiving unit environmental disturbances signal interconversion rate
In when at most thering is the environmental disturbances signal interconversion rate of n signal receiving unit to be all higher than the first preset value, according to the second preset value,
Adjust first sampling number.
Wherein, the first sampling number after adjustment is more than the first sampling number before adjustment；N is the integer less than m.
Specifically, touching device is according to the 302 environmental disturbances signal interconversion rates for calculating N number of signal receiving unit, at this
In a little environmental disturbances signal interconversion rates, if the environmental disturbances signal interconversion rate for being not more than n signal receiving unit is all higher than
First preset value, indicating now environmental disturbances signal intensity, slowly, then touching device determines to need to reduce environmental disturbances signal
Sampling number.Within a certain period of time, adopting for reduction environmental disturbances signal is realized by increasing the number of times of acquisition sampled signal
The number of times of sample, can will subtract the second preset value, so as to adjust the first sampling number on the first sampling number.
Exemplary, it is assumed that touching device has 10 signal receiving units, and the first preset value is 40%, and the second preset value is
10, first time hits is 100, and is all higher than when having more than the environmental disturbances signal interconversion rate value in 2 signal receiving units
During the first preset value, show that now environmental disturbances signal intensity is slow.If it is respectively p to calculate 101、p2、p3…p10, wherein
Only 1 p3Environmental disturbances signal interconversion rate more than 40%, 9 signal receiving unit is less than 40%, it may be determined that work as front ring
Border interference signal change is slow, then touching device determines the sampling number for needing to reduce environmental disturbances signal.After so adjusting
First time hits is to be obtained by number sampling of sampling plus the second preset value, and as 100 add 10, the first of acquisition
Sampling number is 110.
If it should be noted that the first sampling number is for determining to obtain first time environmental disturbances signal sampling and second
The number of times in secondary environment interference signal sampling interval, then this first sampling number is pre-set.
304th, the sampled signal of at least one signal receiving unit is obtained.
Specifically, touching device obtains the sampled signal method of at least one signal receiving unit with described in 201 one
Cause, here is omitted.
It should be noted that the present invention is not limited to the order between step 304 and step 301-303.It can first carry out
Step 301-303, then perform step 304；Step 304 can also be first carried out, step 301-303 is being performed；It can also hold simultaneously
Row step 301-303 and step 304.One kind is represented in the example shown.
305th, the useful signal of at least one signal receiving unit is obtained.
Specifically, touching device is obtained when the method for previous useful signal refers to step 202, here is omitted.
306th, according to the useful signal of at least one signal receiving unit, the position of touch point number and touch point is determined
Put.
Specifically, touching device determines touch point number according to the useful signal of at least one signal receiving unit
And the method for the position of touch point is consistent with 203 methods describeds, here is omitted.
307th, it is determined that after when the position of previous touch point number and touch point, updating sampling number.
Wherein, the sampling number refers to that signal receiving unit obtains the number of times of sampled signal.
Specifically, when useful signal of the touching device according at least one signal receiving unit, determine touch point number and
Behind the position that touch point is arrived, the sampling number of record can be added 1, so as to update sampling number.
It should be noted that updating sampling number can also be other method, for example, the sampling number of record is increased into b, b
For the number more than 1, the present invention is without limitation.
It should be noted that before first time sampled signal is obtained, setting sampling number initial value as 0.
308th, the sampled signal of signal receiving unit is reacquired according to the sampling number of the touch point number and record.
Specifically, it is different according to the sampling number when previous touch point number and record, then reacquire signal and receive
The process of the sampled signal of unit is different, specific as follows：
The first sampling number is reached in the sampling number of record, and touch point number is when being not more than three preset values, again
Obtain the environmental disturbances signal of at least one signal receiving unit.
Specifically, the sampling number of record and the first sampling number are compared by touching device, when the sampling time of record
Number is equal with the first sampling number, and the touch point number determined of touching device is when being not more than three preset values, touches and fills
The error that environmental disturbances signal is obtained caused by negligible thus touch point is put, at least one described signal is reacquired and receives
The environmental disturbances signal of unit.When the touch point number that i.e. touching device is determined is no more than three preset values, currently may
There is touch body to touch touching device.Touching device is touched due to touching body so that at least one signal that touching device is obtained connects
There is certain error in the environmental disturbances signal for receiving unit.When current touch point number is no more than three preset values, this error
It can be ignored, now, touching device can reacquire the environmental disturbances signal of at least one signal receiving unit.
It is preferred that, the 3rd preset value is zero.Now, the first sampling number, and touch point are reached in the sampling number of record
Number when being zero, illustrate when the sampling number of record reaches the first sampling number, touching device does not touch body presence.This
Sample, touching device can obtain the environmental disturbances signal of signal receiving unit, now obtain when no touch body is present
Environmental disturbances signal it is most accurate.
It should be noted that the 3rd preset value is pre-set.
Or, first sampling number is reached in the sampling number of record, and the touch point number determined is more than the 3rd
During preset value, the sampled signal of at least one signal receiving unit is reacquired, and the sampling number of the record is updated to
Zero.
Specifically, the sampling number of record and the first sampling number are compared by touching device, when the sampling time of record
When number is equal with the first sampling number, but touching device is when determining touch point number more than three preset values, then can be with
The sampled signal of at least one signal receiving unit is reacquired, and the sampling number of the record is updated to zero.
Or, when the sampling number of record is not up to first sampling number, reacquires at least one signal and connect
Receive the sampled signal of unit.
Specifically, the sampling number of record and the first sampling number are compared by touching device, when the sampling time of record
When number is less than the first sampling number, no matter touching device is determined when whether previous touch point number is more than the 3rd preset value,
So all need the sampled signal of at least one signal receiving unit of reacquisition.
The invention provides a kind of method of antinoise signal interference, the sampled signal of at least one signal receiving unit is obtained,
The sampled signal includes environmental disturbances signal and/or useful signal, and the useful signal is to launch single by least one signal
Member transmitting, the signal for determining touch point relevant information.Wherein, environmental disturbances signal is to determining institute according to useful signal
State the signal that touch point relevant information produces interference.Believed according to the environmental disturbances of at least one signal receiving unit obtained in advance
Number, the environmental disturbances signal in the sampled signal of at least one signal receiving unit is eliminated, at least one described letter is obtained
The useful signal of number receiving unit.According at least one described signal receiving unit useful signal, determine touch point number and touch
Touch position a little.So, when getting the sampled signal of signal receiving unit, the ring obtained using this signal receiving unit
The environmental disturbances signal included in border interference signal, the sampled signal that this signal receiving unit is obtained is eliminated, so as to obtain
To the useful signal of signal receiving unit so that using the useful signal of signal receiving unit, determine touch point position and
Number, reduces the possibility of the position that touch screen point is determined according to environmental disturbances signal and number, is by by sampled signal
In environmental disturbances target signal filter fall, reduce the erroneous judgement possibility of touch point, and then realize by filtering out environmental disturbances
Signal, improves the accuracy that touch-screen is responded according to the position for touching body touch, so as to improve Consumer's Experience.
The embodiments of the invention provide a kind of touching device, as shown in figure 4, the touching device includes：At least one letter
Number transmitter unit 401, at least one signal receiving unit 402, acquiring unit 403, processing unit 404 and determining unit 405.
It should be noted that this touching device can be infrared touching device, and now, at least one signal receiving unit
402 refer to the infrared signal transmitting tube in infrared touching device, and at least one signal transmitter unit 401 refers to infrared touching device
In IR signal reception pipe, in actual applications, the number of infrared signal transmitting tube and IR signal reception pipe is according to touch
The size of screen and determine.Certainly, this touching device can be other touching devices, and the present invention is not limited to touching device.
At least one described signal transmitter unit 401, for sending useful signal to signal receiving unit 402.
Wherein, the useful signal is the signal of at least one signal transmitter unit 401 transmitting.
At least one described signal receiving unit 402, for receiving sampled signal.
Wherein, the sampled signal is the signal for determining touch point relevant information, and the sampled signal includes environment
Interference signal and/or useful signal.The environmental disturbances signal is to determining the touch point relevant information according to useful signal
Produce the signal of interference.
The acquiring unit 403, the previous sampling of working as obtaining at least one signal receiving unit 402 is believed
Number.
Optionally, the sampled signal includes：Infrared sampled signal, now the environmental disturbances signal include：Environment is red
Outer interference signal.
It should be noted that sampled signal can also be other signals, now, environmental disturbances signal is and sampled signal phase
Corresponding interference signal, the present invention is without limitation.
Specifically, open signal transmitter unit 401 and corresponding signal receiving unit 402 successively, acquiring unit 403 pass through
Sampled on signal receiving unit 402, obtain the sampled signal of signal receiving unit 402.
It should be noted that when no touch body touches touching device, signal receiving unit 402 can receive signal
The useful signal that transmitter unit 401 is launched, and the environmental disturbances signal in ambient light signal can also be received, now obtain
The sampled signal that unit 403 is obtained includes useful signal and environmental disturbances signal.When there is touch body to touch touching device, due to
The useful signal that body has blocked the transmitting of part signal transmitter unit 401 is touched, so that its corresponding nothing of signal receiving unit 402
Method receives the useful signal of this transmitter unit transmitting, can only receive the environmental disturbances signal in ambient light signal, now obtain
The sampled signal for taking unit 403 to be obtained by above-mentioned part signal receiving unit 402 only includes environmental disturbances signal.And other are not
The useful signal that the signal transmitter unit 401 blocked by touch body is launched can be received by its corresponding signal receiving unit 402
Arrive, the sampled signal that now acquiring unit 403 is obtained from other signal receiving units 402 includes useful signal and environmental disturbances
Signal.
Processing unit 404, for the environmental disturbances signal according at least one signal receiving unit 402 obtained in advance,
The environmental disturbances signal in the sampled signal of at least one signal receiving unit 402 is eliminated, at least one described letter is obtained
Number useful signal of receiving unit 402.
Specifically, processing unit 404 obtains the sampling letter of at least one signal receiving unit 402 in acquiring unit 403
After number, due to may including environmental disturbances signal in sampled signal, at this point it is possible to according at least one signal obtained in advance
Environmental disturbances in the environmental disturbances signal of receiving unit 402, the sampled signal that at least one signal receiving unit 402 is obtained
Signal is eliminated, so as to get the useful signal of at least one signal receiving unit 402.
It should be noted that environmental disturbances signal is obtained in advance before sampled signal is obtained.
Further, when no touch body touches touching device, what at least one signal receiving unit 402 was received adopts
Sample signal includes the signal and environmental disturbances signal that signal transmitter unit 401 is launched, and processing unit 404 is at least one described letter
Environmental disturbances signal is eliminated in the sampled signal that number receiving unit 402 is obtained, the effective of each signal receiving unit 402 is got
Signal.Because no touch body touches touching device, so at least one each signal receiving unit 402 can have been received
Signal is imitated, the useful signal of wherein signal receiving unit 402 is the signal that corresponding signal transmitter unit 401 is launched, so place
The useful signal at least one signal receiving unit 402 that reason unit 404 is obtained is not zero.
When there is touch body to touch touching device, the letter of the transmitting of part signal transmitter unit 401 has been blocked due to touching body
Number, so that the corresponding part signal receiving unit 402 of the part signal transmitter unit 401 being blocked can only receive environment and do
Signal is disturbed, now environmental disturbances signal is eliminated in the sampled signal that signal receiving unit 402 is obtained in this section of processing unit 404
Afterwards, the useful signal for this part signal receiving unit 402 that processing unit 404 is obtained is almost nil.And do not touched for other
The corresponding signal receiving unit 402 of signal transmitter unit 401 that body is blocked is touched, the useful signal that processing unit 404 is obtained is not
Zero.
Determining unit 405, for the useful signal according at least one signal receiving unit 402, determines touch point
Number and the position of touch point.
Specifically, useful signal of the determining unit 405 according at least one signal receiving unit 402 of acquisition, and in advance
The signal threshold value of setting is compared, so as to determine this corresponding position of signal receiving unit 402 according to comparative result
Whether there is touch point, and then determine the number of touch point and the position of touch point.
When useful signal is more than or equal to this signal threshold value, determining unit 405 can then determine not touched herein
Body is touched, and is as determined herein without touch point.When useful signal is less than this signal threshold value, determining unit 405 then may be used
To determine to be touched by touch body herein, as determine there is touch point herein, and record its position.Using the above method, it is determined that
Unit 405 can determine the number of touch point and the position of touch point.
It should be noted that signal threshold value is pre-set, its value is more than effective letter that signal transmitter unit 401 is launched
When number being blocked, the useful signal that its corresponding signal receiving unit 402 is received；The letter launched less than signal transmitter unit 401
When number not being blocked, the useful signal that its corresponding signal receiving unit 402 is received.
It is preferred that, when the value of signal threshold value is not blocked for the useful signal that signal transmitter unit 401 is launched, its correspondence
Signal receiving unit 402 receive useful signal 50%.
It should be noted that the useful signal that determining unit 405 is received according to signal receiving unit 402 determines current touch
The method for touching number a little and touch point position can also be other method, such as and in the prior art according to signal receiving unit
The signal of reception determine current touch point number and touch point position method it is identical, the invention is not limited in this regard.
The acquiring unit 403, is additionally operable to obtain the environmental disturbances signal of at least one signal receiving unit 402.
Specifically, the acquiring unit 403, specifically for not launching at least one described signal transmitter unit 401
In the case of useful signal, the environmental disturbances signal of at least one signal receiving unit 402 is obtained.
That is, acquiring unit 403 is by closing all signal transmitter units 401, then all signals are opened successively connect
Unit 402 is received, now, because all signal transmitter units 401 are closed, not transmission signal, so can not have useful signal,
So signal receiving unit 402 can not receive useful signal.But there is the environmental disturbances signal in ambient light, signal is received
Unit 402 can receive this environmental disturbances signal.So not launching effectively at least one described signal transmitter unit 401
In the case of signal, the signal that signal receiving unit 402 is received is exactly environmental disturbances signal, without useful signal, so,
Acquiring unit 403 can obtain environmental disturbances signal by signal receiving unit 402.
Received it should be noted that acquiring unit 403 can obtain all signals at least one signal receiving unit 402
The environmental disturbances signal of unit 402, can also fetching portion signal receiving unit 402 environmental disturbances signal, the present invention to this
It is not limited.
Further, can be with when acquiring unit 403 needs to obtain the environmental disturbances signal of multiple signal receiving units 402
The environmental disturbances signal of multiple signal receiving units 402 is obtained using the above method.
Or, at least one signal receiving unit 402 can be also grouped by touching device, so that acquiring unit 403 can be with
Group obtains the environmental disturbances signal of every group of signal receiving unit 402 for unit.Specific method is as follows：
Acquiring unit 403, specifically for when the number of at least one signal receiving unit 402 is more than 1, by described in
402 points of at least one signal receiving unit is E group, and each includes F signal receiving unit 402 in group.It is described at least
In the case that one signal transmitter unit 401 does not launch useful signal, obtain i-th of the signal each organized in E group and receive
The environmental disturbances signal of unit 402.By the environmental disturbances signal for i-th of the signal receiving unit 402 each organized in the E group
It is used as the environmental disturbances signal of the signal receiving unit 402 in respective group.
Wherein, E is integer more than 0, and F is the integer more than 0, and E and F product is N, N represent it is described at least one
The number of signal receiving unit, and N is the integer more than 1, i=1,2 ... ..., F.
That is, touching device needs to obtain the environmental disturbances signal of N number of signal receiving unit 402, N number of signal is connect
It is E group to receive 402 points of unit, and each group includes F signal receiving unit 402, and can obtain each group is a certain
The dry signal of environment of individual signal receiving unit 402 as each signal receiving unit 402 of whole group environmental disturbances signal.
It is preferred that, centre position or the signal close to centre position in each F signal receiving unit of group 402 can be obtained and received
The environmental disturbances signal of unit 402, the environment of this environmental disturbances signal as the signal receiving unit 402 in whole group is done
Disturb signal.By this method, acquiring unit 403 can only need to obtain the environmental disturbances signal of E signal receiving unit 402,
The environmental disturbances signal of all signal receiving units 402 is would know that, and then can be reduced the sampling time.
Received it should be noted that the acquiring unit 403 can also obtain at least one described signal with other method
The environmental disturbances signal of unit 402, the present invention is without limitation.
The acquiring unit 403, the environmental disturbances signal for being additionally operable to obtain at least one signal receiving unit 402 becomes
Change rate.
It should be noted that to be used to indicate that signal receiving unit 402 is received current for environmental disturbances change rate signal
Secondary environmental disturbances signal and the situation of the environmental disturbances signal intensity speed of last time.The larger table of environmental disturbances change rate signal
Show that the change of current environment interference signal is rapid, environmental disturbances change rate signal is smaller to represent that the change of current environment interference signal is slow
Slowly.
It should be noted that last environmental disturbances signal is when the previous secondary environment of previous environmental disturbances signal is done
Disturb signal.If for example, when previous environmental disturbances signal is the environmental disturbances signal of the 3rd acquisition, then last environment
Interference signal is the environmental disturbances signal of the 2nd acquisition.
Specifically, acquiring unit 403 is used to be believed according to the last environmental disturbances of at least one signal receiving unit 402
Number, and at least one signal receiving unit 402 works as previous environmental disturbances signal, obtains at least one described signal and connects
Receive the environmental disturbances signal interconversion rate of list 402.
That is, acquiring unit 403 obtain at least one signal receiving unit 402 work as previous environmental disturbances
After signal, acquiring unit 403 can be using its last environmental disturbances signal with when previous environmental disturbances signal, obtaining and working as
Difference or ratio between previous environmental disturbances signal and the environmental disturbances signal of last time, receive single as at least one signal
The environmental disturbances signal interconversion rate of member 402.
It should be noted that acquiring unit 403 can also be according to when previous environmental disturbances signal and last environment
Interference signal, environmental disturbances signal interconversion rate is obtained using other method, and the present invention is without limitation.
It is preferred that, the acquiring unit 403, specifically for can be according to formulaObtain it is described at least one
The environmental disturbances signal interconversion rate of each signal receiving unit 402 in signal receiving unit 402.
Wherein, P represents environmental disturbances signal interconversion rate, V2Represent first environment interference signal；V1Represent second environment interference
Signal, VeRepresent the useful signal of signal receiving unit.
The first environment interference signal is that at least one described signal receiving unit 402 obtains the second environment interference
The environmental disturbances signal obtained after signal.
That is, first environment interference signal is obtained after second environment interference signal is obtained.If for example,
One environmental disturbances signal is the environmental disturbances signal that third time is obtained, then second of the acquisition of second environment interference signal
Environmental disturbances signal.
It should be noted that VeThe useful signal of signal receiving unit 402 is represented, is and 402 pairs of signal receiving unit
The signal that the signal transmitter unit 401 answered is launched.The signal that signal transmitter unit 401 is launched is by signal transmitter unit 401
Physical characteristic determine, it is believed that the signal of each transmitting of signal transmitter unit 401 is certain, thus may determine that corresponding
The V of each signal receiving unit 402eFor constant.
The useful signal V of signal receiving unit 402e, first environment interference signal V2With second environment interference signal V1Institute is right
The signal receiving unit 402 answered is same signal receiving unit 402.Therefore, acquiring unit 403 can be according to above-mentioned formula meter
Calculate the environmental disturbances signal interconversion rate of each signal receiving unit 402, the number of the environmental disturbances signal interconversion rate of acquisition and
The number of signal receiving unit 402 is identical.
Further, the touching device, as shown in figure 5, also including：Adjustment unit 406.
The adjustment unit 406, at least one signal receiving unit according to the acquiring unit 403 acquisition
402 environmental disturbances signal interconversion rate, adjusts the first sampling number.
Wherein, first sampling number is the number of times of the acquisition sampled signal at interval when obtaining interference signal twice.Example
Such as, the first sampling number is 10, then obtaining needs between environmental disturbances signal to obtain 10 sampled signals twice.
Specifically, the adjustment unit 406 becomes according to the environmental disturbances signal of at least one signal receiving unit 402
Rate is changed, the method for adjusting the first sampling number is as follows：
It is determined that in the environmental disturbances signal interconversion rate of at least one signal receiving unit 402, there is at least m signal
When the environmental disturbances signal interconversion rate of receiving unit 402 is all higher than the first preset value, according to the second preset value, adjustment described first
Sampling number.
Wherein, the first sampling number after adjustment is less than the first sampling number before adjustment；M is, more than 0, and to be less than or equal to
N integer；N represents the number of at least one signal receiving unit 402.
It is determined that at most having n signal in the environmental disturbances signal interconversion rate of at least one signal receiving unit 402
When the environmental disturbances signal interconversion rate of receiving unit 402 is all higher than the first preset value, according to second preset value, adjustment is described
First sampling number.
Wherein, the first sampling number after adjustment is more than the first sampling number before adjustment；N is the integer less than m.
Further, the touching device, in addition to：Updating block 407.
The updating block 407, for the touch point number determined in the determining unit 405 and the position of touch point
When, update sampling number.
Wherein, the sampling number refers to that signal receiving unit 402 obtains the number of times of sampled signal.
Specifically, when useful signal of the touching device according at least one signal receiving unit 402, determining touch point number
And touch point position when, the sampling number of record can be added 1 by updating block 407, update sampling number.
It should be noted that updating block 407, which updates sampling number, can also be other method, such as by the sampling of record
Number of times increases b, and b is the integer more than 1, and the present invention is without limitation.
It should be noted that before first time sampled signal is obtained, setting sampling number initial value as 0.
Further, acquiring unit 403, the sampling number being additionally operable in record reaches the first sampling number, and touch point
When number is not more than three preset values, the environmental disturbances signal of at least one signal receiving unit 402 is reacquired.
Or, the acquiring unit 403 is additionally operable to when the sampling number of record is not up to first sampling number,
Reacquire the sampled signal of at least one signal receiving unit 402.
Or, the acquiring unit 403, the sampling number being additionally operable in record reaches first sampling number, and touches
When touching a number more than three preset values, the sampled signal of at least one signal receiving unit 402 is reacquired, and trigger described
The sampling number is updated to zero by updating block 407.
Now, the updating block 407, is additionally operable to the sampling number of the record being updated to zero.
It is preferred that, the 3rd preset value is zero.
The invention provides a kind of method and device of antinoise signal interference, the sampling of at least one signal receiving unit is obtained
Signal, the sampled signal includes environmental disturbances signal and/or useful signal, and the useful signal is sent out by least one signal
Penetrate unit transmitting, the signal for determining touch point relevant information.Wherein, environmental disturbances signal is to true according to useful signal
The fixed touch point relevant information produces the signal of interference.It is dry according to the environment of at least one signal receiving unit obtained in advance
Disturb signal, eliminate the environmental disturbances signal in the sampled signal of at least one signal receiving unit, obtain described at least one
The useful signal of individual signal receiving unit.According at least one described signal receiving unit useful signal, touch point number is determined
And the position of touch point.So, when getting the sampled signal of signal receiving unit, obtained using this signal receiving unit
Environmental disturbances signal, the environmental disturbances signal included in the sampled signal that this signal receiving unit is obtained eliminates so that
The useful signal of signal receiving unit is got, so as to using the useful signal of signal receiving unit, determine the position of touch point
Put and number, reduce the possibility of the position that touch screen point is determined according to environmental disturbances signal and number, as by that will sample
Environmental disturbances target signal filter in signal falls, and reduces the erroneous judgement possibility of touch point, and then realizes by filtering out environment
Interference signal, improves the accuracy that touch-screen is responded according to the position for touching body touch, so as to improve Consumer's Experience.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a kind of method of antinoise signal interference, it is characterised in that applied to touching device, the touching device includes：At least one
Individual signal receiving unit and at least one signal transmitter unit, methods described include：
Obtain the sampled signal of at least one signal receiving unit；The sampled signal is to be used to determine touch point correlation letter
The signal of breath；The sampled signal includes environmental disturbances signal and/or useful signal；The useful signal be it is described at least one
The signal of signal transmitter unit transmitting；The environmental disturbances signal is to determining the touch point relevant information according to useful signal
Produce the signal of interference；
According to the environmental disturbances signal of at least one signal receiving unit obtained in advance, eliminate at least one described signal and receive
Environmental disturbances signal in the sampled signal of unit, obtains the useful signal of at least one signal receiving unit；
According at least one described signal receiving unit useful signal, the position of touch point number and touch point is determined；
Obtain the environmental disturbances signal interconversion rate of at least one signal receiving unit；
According to the environmental disturbances signal interconversion rate of at least one signal receiving unit, the first sampling number is adjusted；Described
One sampling number is the number of times of the acquisition sampled signal at interval when obtaining interference signal twice.
2. according to the method described in claim 1, it is characterised in that at least one signal obtained in advance in the basis is received
The environmental disturbances signal of unit, eliminate environmental disturbances signal in the sampled signal of at least one signal receiving unit it
Before, in addition to：
When the number of at least one signal receiving unit is more than 1, at least one described signal receiving unit is divided into E
F signal receiving unit is included in group, and each group；Wherein, E is integer more than 0, and F is the integer more than 0, and E and F
Product is N, and N represents the number of at least one signal receiving unit, and N is the integer more than 1；
In the case where at least one described signal transmitter unit does not launch useful signal, i-th each organized in E group is obtained
The environmental disturbances signal of individual signal receiving unit；Wherein, i=1,2 ..., F；
The environmental disturbances signal for i-th of the signal receiving unit each organized in the E group is connect as the signal in respective group
Receive the environmental disturbances signal of unit.
3. according to the method described in claim 1, it is characterised in that the ring of at least one signal receiving unit described in the basis
Border interference signal interconversion rate, the first sampling number of adjustment includes：
It is determined that in the environmental disturbances signal interconversion rate of at least one signal receiving unit, thering is at least m signal to receive single
When the environmental disturbances signal interconversion rate of member is all higher than the first preset value, according to the second preset value, first sampling number is adjusted；
Wherein, the first sampling number after adjustment is less than the first sampling number before adjustment；M is the integer more than 0, and less than or equal to N；
N represents the number of at least one signal receiving unit；
It is determined that at most having n signal receiving unit in the environmental disturbances signal interconversion rate of at least one signal receiving unit
Environmental disturbances signal interconversion rate when being all higher than the first preset value, according to second preset value, adjust first sampling time
Number；Wherein, the first sampling number after adjustment is more than the first sampling number before adjustment；N is the integer less than m.
4. the method according to claim any one of 1-3, it is characterised in that at least one signal described in the acquisition is received
The environmental disturbances signal interconversion rate of unit includes：
According to formulaObtain the environmental disturbances signal interconversion rate of at least one signal receiving unit；Wherein, P
Represent environmental disturbances signal interconversion rate, V2Represent first environment interference signal；V1Represent second environment interference signal, described first
Environmental disturbances signal is that at least one described signal receiving unit obtains the environment obtained after the second environment interference signal
Interference signal；VeRepresent the useful signal of signal receiving unit.
5. the method according to claim any one of 1-3, it is characterised in that connect at least one signal described in the basis
After the useful signal of receipts unit, the position for determining touch point number and touch point, in addition to：
It is determined that touch point number and touch point position when, update sampling number；It is single that the sampling number refers to that signal is received
Member obtains the number of times of sampled signal；
The first sampling number is reached in the sampling number of record, and touch point number is when being not more than three preset values, reacquires
The environmental disturbances signal of at least one signal receiving unit；Or,
First sampling number is not up in the sampling number of record, the sampling of at least one signal receiving unit is reacquired
Signal；Or,
First sampling number is reached in the sampling number of record, and touch point number is when being more than three preset values, obtains again
The sampled signal of at least one signal receiving unit is taken, and the sampling number of the record is updated to zero.
6. the method according to claim any one of 1-3, it is characterised in that
The sampled signal includes：Infrared sampled signal；
The environmental disturbances signal includes：Environment Infrared jamming signal.
7. a kind of touching device, it is characterised in that including：At least one signal receiving unit, at least one signal transmitter unit,
Acquiring unit, processing unit and determining unit；
At least one described signal transmitter unit, for sending useful signal to signal receiving unit；The useful signal is institute
State the signal of at least one signal transmitter unit transmitting；
At least one described signal receiving unit, for receiving sampled signal；The sampled signal is to be used to determine touch point phase
Close the signal of information；The sampled signal includes environmental disturbances signal and/or useful signal；The environmental disturbances signal is to root
Determine that the touch point relevant information produces the signal of interference according to useful signal；
The acquiring unit, the sampled signal for obtaining at least one signal receiving unit；
The processing unit, for the environmental disturbances signal according at least one signal receiving unit obtained in advance, eliminates institute
The environmental disturbances signal in the sampled signal of at least one signal receiving unit is stated, at least one described signal receiving unit is obtained
Useful signal；
The determining unit, for the useful signal according at least one signal receiving unit, determine touch point number and
The position of touch point；
Also include：Adjustment unit；
The acquiring unit, is additionally operable to obtain the environmental disturbances signal interconversion rate of at least one signal receiving unit；
The adjustment unit, the environmental disturbances at least one signal receiving unit according to acquiring unit acquisition
Signal interconversion rate, adjusts the first sampling number；First sampling number is that the acquisition at interval is adopted when obtaining interference signal twice
The number of times of sample signal.
8. device according to claim 7, it is characterised in that
The acquiring unit, is additionally operable to when the number of at least one signal receiving unit is more than 1, will it is described at least one
Signal receiving unit, which is divided into E group, and each group, includes F signal receiving unit；Wherein, E is the integer more than 0, and F is big
It is N in the product of 0 integer, and E and F, N represents the number of at least one signal receiving unit, and N is whole more than 1
Number；
In the case where at least one described signal transmitter unit does not launch useful signal, i-th each organized in E group is obtained
The environmental disturbances signal of individual signal receiving unit；Wherein, i=1,2 ..., F；
The environmental disturbances signal for i-th of the signal receiving unit each organized in the E group is connect as the signal in respective group
Receive the environmental disturbances signal of unit.
9. device according to claim 7, it is characterised in that
The adjustment unit, specifically for it is determined that the environmental disturbances signal interconversion rate of at least one signal receiving unit
In, it is default according to second when the environmental disturbances signal interconversion rate for having at least m signal receiving unit is all higher than the first preset value
Value, adjusts first sampling number；Wherein, the first sampling number after adjustment is less than the first sampling number before adjustment；M is
More than 0, and the integer less than or equal to N；N represents the number of at least one signal receiving unit；
It is determined that at most having n signal receiving unit in the environmental disturbances signal interconversion rate of at least one signal receiving unit
Environmental disturbances signal interconversion rate when being all higher than the first preset value, according to second preset value, adjust first sampling time
Number；Wherein, the first sampling number after adjustment is more than the first sampling number before adjustment；N is the integer less than m.
10. the device according to claim any one of 7-9, it is characterised in that
The acquiring unit, specifically for according to formulaObtain the environment of at least one signal receiving unit
Interference signal interconversion rate；Wherein, P represents environmental disturbances signal interconversion rate, V2Represent first environment interference signal；V1Represent second
Environmental disturbances signal, the first environment interference signal is that at least one signal receiving unit acquisition second environment is done
Disturb the environmental disturbances signal obtained after signal；VeRepresent the useful signal of signal receiving unit.
11. the device according to claim any one of 7-9, it is characterised in that also include：
When updating block, position for the touch point number that is determined in the determining unit and touch point, sampling number is updated；
The sampling number refers to that signal receiving unit obtains the number of times of sampled signal；
The acquiring unit, the sampling number being additionally operable in record reaches the first sampling number, and touch point number is not more than
During three preset values, the environmental disturbances signal of at least one signal receiving unit is reacquired；Or,
The acquiring unit, the sampling number being additionally operable in record is not up to first sampling number, reacquires at least one
The sampled signal of individual signal receiving unit；Or,
The acquiring unit, the sampling number being additionally operable in record reaches first sampling number, and touch point number is more than
During three preset values, the sampled signal of at least one signal receiving unit is reacquired, and triggers the updating block by described in
Sampling number is updated to zero；
The updating block, is additionally operable to the sampling number of the record being updated to zero.
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| CN201410224826.6A CN103995624B (en) | 2014-05-26 | 2014-05-26 | A kind of method and device of antinoise signal interference |
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| CN201410224826.6A CN103995624B (en) | 2014-05-26 | 2014-05-26 | A kind of method and device of antinoise signal interference |
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| CN103995624B true CN103995624B (en) | 2017-10-10 |
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| CN110096151B (en) * | 2019-04-30 | 2023-05-02 | 东芯泰合(广州)科技有限公司 | Gesture recognition method, device and computer readable storage medium |
| CN116719440A (en) * | 2022-09-28 | 2023-09-08 | 广州众远智慧科技有限公司 | Infrared signal scanning method and device |
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