CN104656466A - Control system and device of touch control panel and detection method - Google Patents
Control system and device of touch control panel and detection method Download PDFInfo
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- CN104656466A CN104656466A CN201310595217.7A CN201310595217A CN104656466A CN 104656466 A CN104656466 A CN 104656466A CN 201310595217 A CN201310595217 A CN 201310595217A CN 104656466 A CN104656466 A CN 104656466A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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Abstract
The invention relates to the technical field of touch control, and provides a control device which is coupled with a touch control panel and comprises a filter, a processor and a judger, wherein the filter is coupled with the touch control panel and is used for generating an output signal according to a signal of a detection line of the touch control panel; the processor is used for processing the output signal for generating a first sub-signal and a second sub-signal and used for integrating the first sub-signal and the second sub-signal so as to generate a processing signal; the judger is used for judging whether the touch control panel is touched or not according to the processing signal. Through the adoption of the control device, low-frequency noise generated by the touch control panel can be eliminated, so that an effect of improving later judgment action accuracy is achieved.
Description
Technical field
The invention relates to the control system of a kind of contact panel, particularly contact panel, device and method for detecting.
Background technology
Along with the progress of science and technology, the kind of electronic product is more and more many, and what wherein receive an acclaim most is portable electronic product, as mobile phone, and notebook computer, personal digital assistant, digital camera.Tradition portable electronic product utilizes button to receive the input of user, then according to the button that user presses, performs corresponding action.But known button not only takes up room, and significantly increase the weight of portable electronic product.
In recent years, the electronic product with touch controllable function becomes the mainstream product in the market gradually.User only need utilize finger or a touching pen, the picture option that the screen that just can click electronic product presents.The position touched of control circuit detecting user of electronic product inside, then according to touch position, perform corresponding application program.But, while control circuit detecting touch position, because of environment or the impact of processing procedure, may will introduce low-frequency noise.Therefore, control circuit cannot correctly judge the position that user touches, and thus reduces accuracy.
Summary of the invention
In order to solve the accuracy problem of above-mentioned judgement touch position, overcoming the deficiencies in the prior art, the object of the invention is to the low-frequency noise that elimination contact panel produces, in order to improve follow-up judgement accuracy of action.After the signal that another object of the present invention produces at accumulation contact panel, provide the change amount signal of an enhancing, the judging unit for rear end carries out judgement action, in order to improve the accuracy judged.
For achieving the above object, the invention provides a kind of control device, it couples a contact panel, and comprises a wave filter, a processor and a determining device.Wave filter couples contact panel, and according to the signal in a detection lines of contact panel, produces an output signal.Processor process outputs signal, and in order to produce one first subsignal and one second subsignal, and integrates the first subsignal and the second subsignal, to produce a processing signals.Determining device, according to processing signals, judges that whether contact panel is touched.
The present invention more provides a kind of method for detecting, is applicable to a contact panel, comprises: utilize detecting one contact panel, in order to produce an output signal; Process this output signal, in order to produce one first subsignal and one second subsignal; Integrate this first and second pulse, in order to produce a processing signals; And according to this processing signals, judge that whether this contact panel is touched.
The present invention separately provides a kind of method for detecting, is applicable to a contact panel, comprises: utilize a wave filter, receives a detection signal of this contact panel, and according to this detection signal, produces an output signal; Utilize a processor, process this output signal, in order to produce one first subsignal and one second subsignal; Utilize this processor, integrate this first and second pulse, in order to produce a processing signals; And utilize a determining device according to this processing signals, judge that whether this contact panel is touched.
The present invention more provides a kind of control system, comprises a contact panel and a control device.Control device comprises a wave filter, a processor and a determining device.Wave filter couples contact panel, and according to the signal in a detection lines of contact panel, produces an output signal.Processor process outputs signal, and in order to produce one first subsignal and one second subsignal, and integrates first and second subsignal, in order to produce a processing signals.Determining device, according to processing signals, judges that whether contact panel is touched.
When integration two subsignal, Xiang Hu Arrived disappears by the low-frequency noise of two subsignals, therefore can reduce the interference of low-frequency noise.Moreover, after integration two subsignal, the processing signals that has large amplitude can be obtained.Because the amplitude of processing signals is quite clear and definite, therefore, if judge that whether contact panel is touched by processing signals, then the accuracy of judgement action significantly can be improved.
For the features and advantages of the present invention can be become apparent, cited below particularly go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below:
Accompanying drawing explanation
Fig. 1 is an embodiment schematic diagram of control system of the present invention.
Fig. 2 A and Fig. 2 B provides another embodiment schematic diagram of control system.
Fig. 3 is an embodiment schematic diagram of processor of the present invention.
Fig. 4 is an embodiment schematic diagram of phase delay module of the present invention.
Fig. 5 A ~ 5D and Fig. 6 is the embodiment schematic diagram of processing module of the present invention.
Fig. 7 is a process flow diagram of method for detecting of the present invention.
Embodiment
Next the present invention will provide many different embodiments to implement features different in the present invention.Composition in each specific embodiment and configuration will simplify the present invention following description.These are not intended to limit the present invention for embodiment.
Fig. 1 is an embodiment schematic diagram of control system of the present invention.As shown in the figure, control system 100 comprises contact panel 110 and a control device 130.Whether contact panel 110 detected by control device 130 touched, and performs a corresponding action according to detecting result.The present invention does not limit the kind of contact panel 110.As long as the panel can responding to touch action all can be used as contact panel 110.In the present embodiment, contact panel 110 can be a resistance-type (Resistive) contact panel, a condenser type (Capacitive) contact panel, a piezoelectric type (Piezoelectric) contact panel, an acoustic wave (Surface Acoustic Wave) contact panel or an optical profile type (Optics) contact panel, as infrared touch control panel.
In the present embodiment, control device 130 comprises a driving selector switch 131 (Driving MUX), detecting selector switch 133 (Sensing MUX), an integrator 135 (Integrator), analog-digital converter 137 (Analog to Digital Converter, ADC) and a digitial controller 139 (DigitalController).Selector switch 131 is driven to couple the plural sweep trace SL of contact panel 110, and according at least one in control signal Sc1 optionally activation sweep trace SL.In certain embodiments, selector switch 131 sequentially activation sweep trace SL is driven.The present invention does not limit the embodiment driving selector switch 131.In certain embodiments, selector switch 131 is driven to can be a multiplexer.
The plural number that detecting selector switch 133 couples contact panel 110 receives line RL, receives the signal on line RL in order to detecting, and is provided by the signal received and give integrator 135.In some embodiment, detecting selector switch 133 is according to control signal Sc2, and received in sequence receives the signal on line RL.The present invention does not limit the embodiment of detecting selector switch 133.In certain embodiments, detecting selector switch 133 is a multiplexer.
Integrator 135, according to the output of detecting selector switch 133, carries out energy accumulation, in order to learn that each receives the change amount signal on line RL, and outputs signal variable quantity.Analog-digital converter 137 converts change amount signal to digital format.Digitial controller 139 is according to the transformation result of analog-digital converter 137, judge the whether touched and touch position of contact panel 110, then according to judged result, perform a specific action, as presented corresponding picture in contact panel 110, or open corresponding application program.Whether in the present embodiment, digitial controller 139 produces control signal Sc1 and Sc2, touched in order to detect contact panel 110.
But, in certain embodiments, when contact panel 110 is because of aging or other reason, when thus producing noise, noise may enter integrator 135 through reception line RL and detecting selector switch 133, and the change amount signal that integrator 135 is produced is subject to noise.Therefore, Fig. 2 A provides another embodiment schematic diagram of control system.
As shown in the figure, control system 200 comprises contact panel 210 and a control device 230A.Due to the characteristic of contact panel 210 and the contact panel 110 of Fig. 1 similar, therefore to repeat no more.In the present embodiment, control device 230A can comprise determining device 231, prime amplifier 233, wave filter 235, processor 237.
Determining device 231 comprises a driving selector switch 251, and detects selector switch 253, analog-digital converter 257 and a digitial controller 259.Due to drive selector switch 251, detecting selector switch 253, analog-digital converter 257 and digitial controller 259 feature and Fig. 1 driving selector switch 131, to detect selector switch 133, analog-digital converter 137 and digitial controller 139 identical, therefore to repeat no more.
Prime amplifier 233 amplifies the detection signal that exports of detecting selector switch 133, and is provided by the detection signal after amplifying and give wave filter 235.Wave filter 235 processes the output signal of prime amplifier 233, and produces an output signal So according to result.Processor 237 processes output signal So, in order to capture two subsignals, then two subsignals is carried out difference processing, in order to produce a processing signals Sp.The operating principle of processor 237 will be described after a while.
Fig. 2 B is another embodiment schematic diagram of control system of the present invention.Fig. 2 B similar diagram 2A, difference is that the control device 230B of Fig. 2 B does not have prime amplifier.In the present embodiment, wave filter 235 directly can receive and process the detection signal detected selector switch 231 and export.
Fig. 3 is an embodiment schematic diagram of processor 237 of the present invention.In the present embodiment, processor 237 comprises phase delay module 310 and a processing module 320.Phase delay module 310 will output signal So as the first subsignal PS1, and delay output signal So, then using the signal after delay as the second subsignal PS2.In the present embodiment, phase delay module 310 delay output signal So, differs a particular phases with the second subsignal PS2, as 180 degree in order to make the first subsignal PS1.In one embodiment, phase delay module 310 calculates the average voltage level of output signal So, and in this, as benchmark, find out beginning and the end time of the first subsignal PS1 and the second subsignal PS2, then the first subsignal PS1 and the second subsignal PS2 is moved on to identical phase place.In other embodiments, output signal between the amplitude of So and the amplitude of the first subsignal PS1 or the second subsignal PS2 and there is a proportionate relationship.
Processing module 320 calculates the difference of the first subsignal PS1 and the second subsignal PS2, in order to produce processing signals Sp.The present invention does not limit the embodiment of processing module 320.In certain embodiments, processing module 320 is a differential difference formula amplifier (Differential Difference Amplifier; DDA).When moment of being on duty fraction amplifier calculates the difference of the first subsignal PS1 and the second subsignal PS2, the low-frequency noise Xiang Hu Arrived of the first subsignal PS1 and the second subsignal PS2 can be disappeared, therefore, the interference of low-frequency noise can be reduced, and can the variable quantity of amplifying signal, the news increasing whole control system are assorted than (SNR).
Fig. 4 is an embodiment schematic diagram of phase delay module 310 of the present invention, please refer to Fig. 4, and phase delay module 310 comprises transfer wire 410, Delay Element 430 and a microcontroller 450.In the present embodiment, transfer wire 410 is in order to transmit output signal So.Delay Element 430 according to a control signal Sc3 delay output signal So, in order to the signal S that is delayed
oD.Microcontroller 450 produces control signal Sc3, in order to adjust the time delay of Delay Element 430.
In other embodiments, Delay Element 430 has fixing time delay.When multiple Delay Element is cascaded, just time delay can be increased.In this instance, by the quantity of adjustment Delay Element, the just adjustable delay time, therefore, microcontroller 450 can be omitted.
In the present embodiment, due to Delay Element 430 delay output signal So, therefore, in period 400, can will output signal So as the first subsignal PS1, and by inhibit signal S
oDas the second subsignal PS2.As shown in the figure, the first subsignal PS1 is a negative pulse of output signal So, and the second subsignal PS2 is inhibit signal S
oDa positive pulse.In other embodiments, the first subsignal PS1 also can be a positive pulse of output signal So, and the second subsignal PS2 can be inhibit signal S
oDa negative pulse.
Fig. 5 A ~ 5D is the embodiment schematic diagram of processing module of the present invention.Please refer to Fig. 5 A, in the present embodiment, processing module 320 is a differential difference formula amplifier.Differential difference formula amplifier has high-gain and input impedance, therefore, also better than integrator for anti-noise ability, therefore effectively can suppress the noise from contact panel 210.As shown in the figure, differential difference formula amplifier 510 has double differential to 511 and 512, in order to compare two differential waves pair.
The differential inverting input to 511 receives an input signal Vpn, and the differential non-inverting input to 511 receives an input signal Vpp.The differential inverting input to 512 receives an input signal Vnn, and the differential non-inverting input to 512 receives an input signal Vnp.Differential difference formula amplifier 510, according to input signal Vpn, Vpp, Vnn, Vnp, produces a processing signals Sp, and by output terminal 513 output processing signal Sp.In the present embodiment, Sp=A [(Vpp-Vpn)-(Vnp-Vnn)], wherein A be differential difference formula amplifier 510 open loop gain.
In one embodiment, differential difference formula amplifier is negative feedback form, in order to as differential input buffer device, as shown in Figure 5 B.In this embodiment, differential difference formula amplifier 530 has differential to 531 ~ 533.The differential inverting input to 531 be couple to differential to 533 non-inverting output, and the differential non-inverting input to 531 can receive the second subsignal PS2.In addition, the differential non-inverting input to 532 receives the first subsignal PS1, and the differential inverting input to 532 be couple to differential to 533 reversed-phase output.
In the present embodiment, the differential non-inverting output to 533 provides processing signals Sp+.The differential reversed-phase output to 533 provides processing signals Sp-.Processing signals Sp+ and Sp-is a differential wave.In this instance, the analog-digital converter 257 receiving processing signals Sp is a differential analog digital quantizer.
In other embodiments, by the connecting line changing differential difference formula amplifier, the just enlargement factor of adjustable amplifier.Please refer to Fig. 5 C, in this embodiment, differential difference formula amplifier 550 has differential to 551 and 552 and an output terminal 553.As shown in the figure, the differential inverting input to 551 receives the first subsignal PS1, and the differential non-inverting input to 551 receives the second subsignal PS2.
In addition, the differential inverting input to 552 receives an earth level GND, and the differential non-inverting input to 552 receives a voltage division signal V
d.In the present embodiment, processing module 320 has more resistance R1 and R2.Resistance R1 and R2 is series between output terminal 553 and earth level GND, and carries out dividing potential drop to processing signals Sp, in order to produce voltage division signal V
d.In this embodiment, by the resistance of adjusting resistance R1 and R2, the just enlargement factor of adjustable differential difference formula amplifier 550.In some embodiment, the enlargement factor of differential difference formula amplifier 550 is IM
r1/ IM
r2; Wherein IM
r1for the resistance of resistance R1, IM
r2for the resistance of resistance R2.
In the present embodiment, because differential difference formula amplifier 550 is Single-end output, therefore, the processing signals Sp that an analog-digital converter process differential difference formula amplifier 550 exports can be utilized.In other embodiments, processing module 320 has the differential difference formula amplifier of multiple series connection.By the quantity controlling differential difference formula amplifier, the just enlargement factor of adjustable processing module 163.Please refer to Fig. 5 D, in this embodiment, processing module 320 has differential difference formula amplifier 571 ~ 573.Differential difference formula amplifier 571 ~ 573 is cascaded.
As shown in the figure, the connected mode of differential difference formula amplifier 571 and 572 is identical with the differential difference formula amplifier 530 of Fig. 5 B.In addition, the connected mode of differential difference formula amplifier 573 is identical with the differential difference formula amplifier 550 of Fig. 5 C.Therefore, the operating principle of differential difference formula amplifier 571 ~ 573 is no longer described.
In this embodiment, by the serial number or the resistance of adjusting resistance R1 and R2 that control differential difference formula amplifier, the enlargement factor of equal adjustable processing module 320.Therefore, when the first subsignal PS1 and the second subsignal PS2 inputs to processing module 320, processing module 320 carries out difference processing to the first subsignal PS1 and the second subsignal PS2, in order to produce a processing signals Sp, and by output terminal 574 output processing signal Sp, now, processing signals Sp is an enhanced signal.
For Fig. 5 D, suppose, the enlargement factor of differential difference formula amplifier 571 ~ 573 is 2, and the amplitude of subsignal PS1 and PS2 is assumed to be X.After the process through differential difference formula amplifier 571 ~ 573, the amplitude of processing signals Sp is 8X.Because processing module 320 can the variable quantity of amplifying signal, and while process subsignal PS1 and PS2, the low-frequency noise Xiang Hu Arrived of the first subsignal PS1 and the second subsignal PS2 can be disappeared, the low-frequency noise Xiang Hu Arrived of the first subsignal PS1 and the second subsignal PS2 is disappeared, therefore, when determining device 231 during action, significantly can improve the accuracy of determining device 231 according to processing signals Sp.
Fig. 6 is a circuit framework schematic diagram of differential difference formula amplifier of the present invention.As shown in the figure, differential difference formula amplifier 600 comprise differential to 610,630, initiatively load 650, buffer part 670, electric current portion 690 and 695.Differential all have two MOS transistor to 610 and 630, in order to receive input signal Vpp, Vpn, Vnp, Vnn.It is differential to 610 and 630 that active load 650 provides fixed current to give.Buffer part 670 receives a bias voltage Vb, and amplify differential to 610 and 630 output, in order to output processing signal Sp.Electric current portion 690 and 695 is in order to provide fixed current.
Fig. 7 is a process flow diagram of method for detecting of the present invention.Method for detecting of the present invention controls a contact panel, in order to detect the touch action and touch position that occur on contact panel.The present invention does not limit the kind of contact panel.As long as the panel of corresponding signal can be exported according at least one touch action, all can be used as contact panel.
First, detecting contact panel, in order to produce an output signal (step 710).In one embodiment, provide plural drive singal to give the plural sweep trace of this contact panel, then receive a detection signal of contact panel.Process this detection signal, in order to produce output signal.The present invention does not limit how to process detection signal.In one embodiment, amplify detection signal, in order to produce an amplifying signal, then filtering process is carried out to amplifying signal.In another embodiment, omit amplification procedure, directly filtering process is carried out to detection signal, and using filtered result as output signal.
Then, process output signal, in order to produce one first subsignal and one second subsignal (step 730).In one embodiment, can output signal as the first subsignal, and delay output signal, then by signal second subsignal after delay.In another embodiment, phase delay module 310 delay output signal, in order to make the first subsignal differ a particular phases with the second subsignal, as 180 degree.
Then, the difference of first and second subsignal is calculated, in order to produce a processing signals (step 750).In one embodiment, one first differential difference formula amplifier process first subsignal and the second subsignal is utilized, in order to produce processing signals.In other embodiments, first and second subsignal of differential difference formula amplifier process of multiple series connection can be utilized.When moment of being on duty fraction amplifier calculates the difference of the first subsignal and the second subsignal, the low-frequency noise of the first subsignal and the second subsignal can be eliminated simultaneously.In addition, if when differential difference formula amplifier being connected into negative feedback or utilizing other assembly (as resistance) to connect differential difference formula amplifier, the enlargement ratio of adjustable differential difference formula amplifier, thus can produce larger change amount signal (i.e. processing signals).In one embodiment, processing signals is a differential wave.
Then, according to processing signals, contact panel whether touched (step 770) is judged.In one embodiment, when processing signals is a differential wave, a differential analog digital comparator conversion process signal can be utilized, in order to produce a digital signal.In other embodiments, when processing signals is not a differential wave, just can utilize general analog digital comparer conversion process signal.According to the digital signal after conversion, just can learn that whether contact panel is touched.When contact panel is touched, corresponding application program can be opened, or switch the picture of contact panel.
By the output signal postponing contact panel, just two subsignals can be obtained.Recycling differential difference amplifier integrates two subsignals, and just the low-frequency noise Xiang Hu Arrived of two subsignals can be disappeared, the output signal thus reducing contact panel is subject to the degree of low frequency noises.In addition, after integration two subsignal, the processing signals that has large amplitude can be obtained.Because the amplitude of processing signals is quite clear and definite, therefore, if judge that whether contact panel is touched by processing signals, then the accuracy of judgement action significantly can be improved.
Although the present invention discloses as above with several preferred embodiment, so itself and be not used to limit the present invention, any those of ordinary skill in the art, without departing from the spirit and scope of the present invention, when doing arbitrary change and retouching.In addition, scope of the present invention is not limited to existing or future developed specific program, machine, manufacture, the combination of material, function, method or step, its essence is carried out with according to the identical function of embodiment of the present invention or reach identical result.Therefore, the scope that protection scope of the present invention ought define depending on appended claim is as the criterion.In addition, each claim is construed as an independently embodiment, and the combination of various claim and embodiment is all in scope of the present invention.
Claims (32)
1. a control device, couples a contact panel, it is characterized in that, comprising:
One wave filter, couples this contact panel, and according to the signal in a detection lines of this contact panel, produces an output signal;
One processor, processes this output signal, in order to produce one first subsignal and one second subsignal, and integrates this first subsignal and this second subsignal, to produce a processing signals; And
One determining device, according to this processing signals, judges that whether this contact panel is touched.
2. control device according to claim 1, is characterized in that, more comprises:
One prime amplifier, is coupled between this contact panel and this wave filter, and amplifies the signal in this detection lines.
3. control device according to claim 1, is characterized in that, this processor comprises:
One phase delay module, using this output signal as this first subsignal, and postpones this output signal, in order to as an inhibit signal, and using this inhibit signal as this second subsignal; And
One processing module, calculates the difference of this first and second subsignal, in order to produce this processing signals.
4. control device according to claim 3, is characterized in that, this processing module is one first differential difference formula amplifier.
5. control device according to claim 4, is characterized in that, this first differential difference formula amplifier has:
One first inverting input;
One first non-inverting input, receives this second subsignal;
One second inverting input;
One second non-inverting input, receives this first subsignal;
One non-inverting output, couples this first inverting input; And
One reversed-phase output, couples this second inverting input, and wherein this non-inverting output and this reversed-phase output export the differential wave between this first and second subsignal.
6. control device according to claim 5, is characterized in that, this determining device comprises:
One differential analog digital quantizer, couples this reversed-phase output and this non-inverting output, in order to convert this differential wave to a digital signal; And
One digitial controller, according to this digital signal, judges that whether this contact panel is touched.
7. control device according to claim 5, is characterized in that, this processing module more comprises one second differential difference formula amplifier, one first resistance and one second resistance, and this second differential difference formula amplifier has:
One the 3rd inverting input, couples this reversed-phase output;
One the 3rd non-inverting input, couples this non-inverting output;
One the 4th inverting input, receives an earth level;
One the 4th non-inverting input, receives a voltage division signal; And
One output terminal, exports this processing signals, and wherein this first and second resistant series is between this output terminal and this earth level, in order to provide this voltage division signal.
8. control device according to claim 7, is characterized in that, this determining device comprises:
One analog-digital converter, couples this output terminal, in order to convert this processing signals to a digital signal;
And
One digitial controller, according to this digital signal, judges that whether this contact panel is touched.
9. control device according to claim 3, is characterized in that, this processing module comprises a differential difference formula amplifier and one first resistance and one second resistance, and this differential difference formula amplifier has:
One first inverting input, receives this first subsignal;
One first non-inverting input, receives this second subsignal;
One second inverting input, receives an earth level;
One second non-inverting input, receives a voltage division signal; And
One output terminal, exports this processing signals, and wherein this first and second resistant series is between this output terminal and this earth level, in order to provide this voltage division signal.
10. control device according to claim 9, is characterized in that, this determining device comprises:
One analog-digital converter, couples this output terminal of this processing module, in order to convert this processing signals to a digital signal; And
One driving governor, according to this digital signal, judges that whether this contact panel is touched.
11. 1 kinds of method for detecting, are applicable to a contact panel, it is characterized in that, comprising:
Utilize detecting one contact panel, in order to produce an output signal;
Process this output signal, in order to produce one first subsignal and one second subsignal;
Integrate this first and second pulse, in order to produce a processing signals; And
According to this processing signals, judge that whether this contact panel is touched.
12. method for detecting according to claim 11, is characterized in that, the step detecting this contact panel comprises:
Plural drive singal is provided to give the plural sweep trace of this contact panel;
Receive a detection signal of this contact panel; And
Process this detection signal, in order to produce this output signal.
13. method for detecting according to claim 11, is characterized in that, the step processing this detection signal comprises:
Amplify this detection signal, in order to produce an amplifying signal; And
Filtering is carried out to this amplifying signal, in order to produce this output signal.
14. method for detecting according to claim 11, is characterized in that, process this detection signal and carry out filtering to this detection signal.
15. method for detecting according to claim 11, is characterized in that, the step processing this output signal comprises:
Using this output signal as this first subsignal;
Postpone this output signal, in order to produce an inhibit signal; And
Using this inhibit signal as this second subsignal.
16. method for detecting according to claim 15, is characterized in that, this first and second subsignal has identical phase place.
17. method for detecting according to claim 11, is characterized in that, the step integrating this first and second subsignal utilizes one first this first and second subsignal of differential difference formula amplifier process, in order to produce this processing signals.
18. method for detecting according to claim 17, is characterized in that, this processing signals is a differential wave.
19. method for detecting according to claim 18, is characterized in that, judge that the whether touched step of this contact panel comprises:
A differential analog digital comparator is utilized to change this processing signals, in order to produce a digital signal; And according to this digital signal, judge that whether this contact panel is touched.
20. method for detecting according to claim 17, is characterized in that, the step integrating this first and second subsignal comprises:
Utilize one first this first and second subsignal of differential difference formula amplifier process, in order to produce a differential wave; And
Utilize one second this differential wave of differential difference formula amplifier process, in order to produce this processing signals.
21. method for detecting according to claim 11, is characterized in that, the step integrating this first and second pulse calculates the difference between this first and second subsignal, in order to produce this processing signals.
22. 1 kinds of method for detecting, are applicable to a contact panel, it is characterized in that, comprising:
Utilize a wave filter, receive a detection signal of this contact panel, and according to this detection signal, produce an output signal;
Utilize a processor, process this output signal, in order to produce one first subsignal and one second subsignal;
Utilize this processor, integrate this first and second pulse, in order to produce a processing signals; And
Utilize a determining device according to this processing signals, judge that whether this contact panel is touched.
23. 1 kinds of control system, is characterized in that, comprising:
One contact panel; And
One control device, comprising:
One wave filter, couples this contact panel, and according to the signal in a detection lines of this contact panel, produces an output signal;
One processor, processes this output signal, in order to produce one first subsignal and one second subsignal, and integrates this first and second subsignal, in order to produce a processing signals; And
One determining device, according to this processing signals, judges that whether this contact panel is touched.
24. control system according to claim 23, is characterized in that, more comprise:
One prime amplifier, is coupled between this contact panel and this wave filter, and amplifies the signal in this detection lines.
25. control system according to claim 23, is characterized in that, this processor comprises:
One phase delay module, using this output signal as this first subsignal, and postpones this output signal, in order to as an inhibit signal, and using this inhibit signal as this second subsignal; And
One processing module, calculates the difference of this first and second subsignal, in order to produce this processing signals.
26. control system according to claim 25, is characterized in that, this processing module is one first differential difference formula amplifier.
27. control system according to claim 26, is characterized in that, this first differential difference formula amplifier has:
One first inverting input;
One first non-inverting input, receives this first subsignal;
One second inverting input;
One second non-inverting input, receives this second subsignal;
One non-inverting output, couples this first inverting input; And
One reversed-phase output, couples this second inverting input, and wherein this non-inverting output and this reversed-phase output export the differential wave between this first and second subsignal.
28. control system according to claim 27, is characterized in that, this determining device comprises:
One differential analog digital quantizer, couples this reversed-phase output and this non-inverting output, in order to convert this differential wave to a digital signal; And
One digitial controller, according to this digital signal, judges that whether this contact panel is touched.
29. control system according to claim 27, is characterized in that, this processing module more comprises one second differential difference formula amplifier and one first resistance and one second resistance, and this second differential difference formula amplifier has:
One the 3rd inverting input, couples this reversed-phase output;
One the 3rd non-inverting input, couples this non-inverting output;
One the 4th inverting input, receives an earth level;
One the 4th non-inverting input, receives a voltage division signal; And
One output terminal, exports this processing signals, and wherein this first and second resistant series is between this output terminal and this earth level, in order to provide this voltage division signal.
30. control system according to claim 29, is characterized in that, this determining device comprises:
One analog-digital converter, couples this output terminal, in order to convert this processing signals to a digital signal;
And
One digitial controller, according to this digital signal, judges that whether this contact panel is touched.
31. control system according to claim 25, is characterized in that, this processing module comprises a differential difference formula amplifier and one first resistance and one second resistance, and this differential difference formula amplifier has:
One first inverting input, receives this first subsignal;
One first non-inverting input, receives this second subsignal;
One second inverting input, receives an earth level;
One second non-inverting input, receives a voltage division signal; And
One output terminal, exports this processing signals, and wherein this first and second resistant series is between this output terminal and this earth level, in order to provide this voltage division signal.
32. control system according to claim 31, is characterized in that, this determining device comprises:
One analog-digital converter, couples this output terminal, in order to convert this processing signals to a digital signal;
And
One digitial controller, according to this digital signal, judges that whether this contact panel is touched.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310595217.7A CN104656466A (en) | 2013-11-21 | 2013-11-21 | Control system and device of touch control panel and detection method |
| TW103118973A TWI539341B (en) | 2013-11-21 | 2014-05-30 | Control system, device and detection method for touch panel |
| TW103209578U TWM493098U (en) | 2013-11-21 | 2014-05-30 | Control system and device for touch panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310595217.7A CN104656466A (en) | 2013-11-21 | 2013-11-21 | Control system and device of touch control panel and detection method |
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| CN104656466A true CN104656466A (en) | 2015-05-27 |
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| CN (1) | CN104656466A (en) |
| TW (2) | TWM493098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109840027A (en) * | 2017-11-28 | 2019-06-04 | 财团法人工业技术研究院 | Touch panel driving device |
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| CN109840027B (en) * | 2017-11-28 | 2022-04-15 | 瀚宇彩晶股份有限公司 | Touch panel driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM493098U (en) | 2015-01-01 |
| TWI539341B (en) | 2016-06-21 |
| TW201520849A (en) | 2015-06-01 |
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