CN203630755U - Control system and device of touch panel - Google Patents
Control system and device of touch panel Download PDFInfo
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- CN203630755U CN203630755U CN201320745009.6U CN201320745009U CN203630755U CN 203630755 U CN203630755 U CN 203630755U CN 201320745009 U CN201320745009 U CN 201320745009U CN 203630755 U CN203630755 U CN 203630755U
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Abstract
The utility model relates to the technical field of touch control, and provides a control device which is connected a touch panel in a coupled mode and comprises a filter, a processor and a judgment device. The filter is connected with the touch panel in a coupled mode and generates an output signal according to a signal on a detection line of the touch panel. The processor processes the output signal so as to generate a first sub-signal and a second sub-signal, and integrates the first sub-signal and the second sub-signal to generate a processing signal. The judgment device judges whether the touch panel is touched or not according to the processing signal. According to the control device, low-frequency noise produced by the control panel is eliminated, and therefore the effect of improving accuracy of a follow-up judgment motion is achieved. In addition, the utility model further provides a control system.
Description
Technical field
The utility model relates to control system and the device of a kind of contact panel, particularly contact panel.
Background technology
Along with scientific and technological progress, 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 reception user's input, then the button of pressing according to user, carries out 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 that has a touch controllable function becomes the mainstream product in the market gradually.User only need utilize finger or a touching pen, just can click the picture option that the screen of electronic product presents.The position that the control circuit detecting user of electronic product inside touches, then according to touch position, carry out corresponding application program.But, in the time of control circuit detecting touch position, may, because of environment or the impact of processing procedure, will introduce low-frequency noise.Therefore, the control circuit position that user touches that cannot correctly judge, thereby reduce accuracy.
Utility model content
In order to solve the accuracy problem of above-mentioned judgement touch position, overcome the deficiencies in the prior art, the purpose of this utility model is to eliminate the low-frequency noise that contact panel produces, in order to improve follow-up judgement accuracy of action.After the signal that an object produces at accumulation contact panel of the present utility model again, provide the change amount signal of an enhancing, judge action for the judging unit of rear end, in order to improve the accuracy of judgement.
For achieving the above object, the utility model provides a kind of control device, and 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 is processed output signal, 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.
In an embodiment of the present utility model, control device more comprises a prime amplifier, is coupled between contact panel and wave filter, and amplifies the signal in detection lines.
In an embodiment of the present utility model, wherein processor comprises a phase delay module and a processing module.Phase delay module is using output signal as the first subsignal, and delay output signal, and in order to as an inhibit signal, and this inhibit signal is as the second subsignal.Processing module, calculates the difference of first and second subsignal, in order to produce processing signals.
In an embodiment of the present utility model, wherein processing module is one first differential differential type amplifier.
In an embodiment of the present utility model, wherein the first differential differential type amplifier has one first inverting input, one first non-inverting input, one second inverting input, one second non-inverting input, a noninverting output terminal and a reversed-phase output.The first non-inverting input, receives the second subsignal.The second non-inverting input, receives the first subsignal.Noninverting output terminal, couples the first inverting input.Reversed-phase output, couples the second inverting input, and wherein noninverting output terminal and reversed-phase output are exported the differential wave between first and second subsignal.
In an embodiment of the present utility model, wherein determining device comprises a differential analog-digital converter and a digitial controller.Differential analog-digital converter couples reversed-phase output and noninverting output terminal, in order to differential wave is converted to a digital signal.Digitial controller, according to digital signal, judges that whether contact panel is touched.
In an embodiment of the present utility model, wherein processing module more comprises one second differential differential type amplifier, one first resistance and one second resistance.The second differential differential type amplifier has one the 3rd inverting input, one the 3rd non-inverting input, one the 4th inverting input, one the 4th non-inverting input and an output terminal.The 3rd inverting input couples reversed-phase output, and the 3rd non-inverting input couples noninverting output terminal, and the 4th inverting input receives an earth level, and the 4th non-inverting input receives a voltage division signal, output terminal output processing signals.Wherein first and second resistance is series between output terminal and earth level, in order to voltage division signal to be provided.
In an embodiment of the present utility model, wherein determining device comprises an analog-digital converter and a digitial controller.Analog-digital converter couples output terminal, in order to processing signals is converted to a digital signal.Digitial controller, according to digital signal, judges that whether contact panel is touched.
In an embodiment of the present utility model, wherein processing module comprises a differential differential type amplifier and one first resistance and one second resistance.Differential differential type amplifier has one first inverting input, one first non-inverting input, one second inverting input, one second non-inverting input and an output terminal.The first inverting input receives the first subsignal, and the first non-inverting input receives the second subsignal, and the second inverting input receives an earth level, and the second non-inverting input receives a voltage division signal, output terminal output processing signals.Wherein first and second resistance is series between output terminal and earth level, in order to voltage division signal to be provided.
In an embodiment of the present utility model, wherein determining device comprises an analog-digital converter and a driving governor.Analog-digital converter couples the output terminal of processing module, in order to processing signals is converted to a digital signal.Driving governor judges that according to digital signal whether contact panel is touched.
The utility model 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 is processed output signal, 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.
In an embodiment of the present utility model, wherein control system more comprises a prime amplifier, is coupled between contact panel and wave filter, and amplifies the signal in detection lines.
In an embodiment of the present utility model, wherein processor comprises a phase delay module and a processing module.Phase delay module is using output signal as the first subsignal, and delay output signal, in order to as an inhibit signal, and using inhibit signal as the second subsignal.Processing module is calculated the difference of first and second subsignal, in order to produce processing signals.In an embodiment of the present utility model, wherein processing module is one first differential differential type amplifier.
In an embodiment of the present utility model, wherein the first differential differential type amplifier has one first inverting input, one first non-inverting input, one second inverting input, one second non-inverting input, a noninverting output terminal and a reversed-phase output.The first non-inverting input receives the first subsignal, and the second non-inverting input receives the second subsignal, and noninverting output terminal couples the first inverting input, and reversed-phase output couples the second inverting input.Wherein noninverting output terminal and reversed-phase output are exported the differential wave between first and second subsignal.
In an embodiment of the present utility model, wherein determining device comprises a differential analog-digital converter and a digitial controller.Differential analog-digital converter couples reversed-phase output and noninverting output terminal, in order to differential wave is converted to a digital signal.Digitial controller judges that according to digital signal whether contact panel is touched.
In an embodiment of the present utility model, wherein processing module more comprises one second differential differential type amplifier and one first resistance and one second resistance.The second differential differential type amplifier has one the 3rd inverting input, one the 3rd non-inverting input, one the 4th inverting input, one the 4th non-inverting input and an output terminal.The 3rd inverting input couples reversed-phase output, and the 3rd non-inverting input, couples noninverting output terminal, and the 4th inverting input receives an earth level, and the 4th non-inverting input receives a voltage division signal, output terminal output processing signals.Wherein first and second resistance is series between output terminal and earth level, in order to voltage division signal to be provided.
In an embodiment of the present utility model, wherein determining device comprises an analog-digital converter and a digitial controller.Analog-digital converter couples output terminal, in order to processing signals is converted to a digital signal.Digitial controller judges that according to digital signal whether contact panel is touched.
In an embodiment of the present utility model, wherein processing module comprises a differential differential type amplifier and one first resistance and one second resistance.Differential differential type amplifier has one first inverting input, one first non-inverting input, one second inverting input, one second non-inverting input and an output terminal.The first inverting input receives the first subsignal, and the first non-inverting input receives the second subsignal, and the second inverting input receives an earth level, and the second non-inverting input receives a voltage division signal, output terminal output processing signals.Wherein first and second resistance is series between output terminal and earth level, in order to voltage division signal to be provided.
In an embodiment of the present utility model, wherein determining device comprises an analog-digital converter and a digitial controller.Analog-digital converter couples output terminal, in order to processing signals is converted to a digital signal.Digitial controller, according to digital signal, judges that whether contact panel is touched.
In the time integrating two subsignals, the low-frequency noise of two subsignals disappears Xiang Hu Arrived, therefore can reduce the interference of low-frequency noise.Moreover, integrating after two subsignals, can obtain a processing signals with large amplitude.Because the amplitude of processing signals is quite clear and definite, therefore, if judge that by processing signals whether contact panel is touched, can significantly improve the accuracy of judgement action.
For feature and advantage of the present utility model can be become apparent, cited below particularly go out preferred embodiment, and coordinate appended graphicly, be described in detail below:
Accompanying drawing explanation
Fig. 1 is an embodiment schematic diagram of control system of the present utility model.
Fig. 2 A and Fig. 2 B provide another embodiment schematic diagram of control system.
Fig. 3 is an embodiment schematic diagram of processor of the present utility model.
Fig. 4 is an embodiment schematic diagram of phase delay module of the present utility model.
Fig. 5 A～5D and Fig. 6 are the embodiment schematic diagram of processing module of the present utility model.
Fig. 7 is a process flow diagram of control method of the present utility model.
Embodiment
Next the utility model will provide many different embodiment to implement different feature in the utility model.Composition in each specific embodiment and configuration will describe to simplify the utility model below.These are not intended to limit the utility model for embodiment.
Fig. 1 is an embodiment schematic diagram of control system of the present utility model.As shown in the figure, control system 100 comprises a contact panel 110 and a control device 130.Whether control device 130 is detected contact panel 110 touched, and carries out a corresponding action according to detecting result.The utility model does not limit the kind of contact panel 110.All can be used as contact panel 110 as long as can respond to the panel of touch action.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), an analog-digital converter 137 (Analog to Digital Converter, ADC) and a digitial controller 139 (Digital Controller).Drive selector switch 131 to couple the plural sweep trace SL of contact panel 110, and according to optionally at least one in activation sweep trace SL of control signal Sc1.In certain embodiments, drive sequentially activation sweep trace SL of selector switch 131.The utility model does not limit the embodiment that drives selector switch 131.In certain embodiments, drive selector switch 131 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, and the signal receiving is provided and gives integrator 135 in order to detecting.In some embodiment, detecting selector switch 133, according to control signal Sc2, sequentially receives the signal on line RL.The utility model does not limit the embodiment of detecting selector switch 133.In certain embodiments, detecting selector switch 133 is a multiplexer.
But, in certain embodiments, when contact panel 110 is because of aging or other reason, thereby produce when noise, noise may see through to receive line RL and detect selector switch 133 and enter integrator 135, 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 a contact panel 210 and a control device 230A.Due to the characteristic of contact panel 210 and the contact panel of Fig. 1 110 similar, therefore repeat no more.In the present embodiment, control device 230A can comprise a determining device 231, a prime amplifier 233, a wave filter 235, a processor 237.
Determining device 231 comprises a driving selector switch 251, detecting selector switch 253, an analog-digital converter 257 and a digitial controller 259.Owing to driving, selector switch 251, the detecting feature of selector switch 253, analog-digital converter 257 and digitial controller 259 and the driving selector switch 131 of Fig. 1, detecting selector switch 133, analog-digital converter 137 and digitial controller 139 are identical, therefore repeat no more.
Fig. 2 B is another embodiment schematic diagram of control system of the present utility model.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 can directly receive and process the detection signal that detecting selector switch 231 is exported.
Fig. 3 is an embodiment schematic diagram of processor 237 of the present utility model.In the present embodiment, processor 237 comprises a phase delay module 310 and a processing module 320.Phase delay module 310 is using 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, with so that the first subsignal PS1 and the second subsignal PS2 differ a particular phases, as 180 degree.In one embodiment, phase delay module 310 is calculated the average voltage level of output signal So, and using 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 are moved on to identical phase place.In other embodiments, between the amplitude of output signal So and the amplitude of the first subsignal PS1 or the second subsignal PS2, there is a proportionate relationship.
Fig. 4 is an embodiment schematic diagram of phase delay module 310 of the present utility model, please refer to Fig. 4, and phase delay module 310 comprises a transfer wire 410, a 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 is according to a control signal Sc3 delay output signal So, in order to produce inhibit signal S
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.In the time that multiple Delay Elements are cascaded, just can increase time delay.In this example, by the quantity of adjusting Delay Element, the just adjustable delay time, therefore, can omit microcontroller 450.
In the present embodiment, due to Delay Element 430 delay output signal So, therefore, during in 400, can be using 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 utility model.Please refer to Fig. 5 A, in the present embodiment, processing module 320 is a differential differential type amplifier.Differential differential type amplifier has high-gain and input impedance, therefore, also better than integrator for anti-noise ability, therefore can effectively suppress the noise from contact panel 210.As shown in the figure, differential differential type 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 differential non-inverting input to 511 receives an input signal Vpp.The differential inverting input to 512 receives an input signal Vnn, and differential non-inverting input to 512 receives an input signal Vnp.Differential differential type amplifier 510, according to input signal Vpn, Vpp, Vnn, Vnp, produces a processing signals Sp, and exports processing signals Sp by output terminal 513.In the present embodiment, Sp=A[(Vpp-Vpn)-(Vnp-Vnn)], wherein A is the loop gain of opening of differential differential type amplifier 510.
In one embodiment, differential differential type amplifier is negative feedback form, in order to as differential input buffer device, as shown in Figure 5 B.In this embodiment, differential differential type amplifier 530 has differential to 531～533.The differential inverting input to 531 is couple to differential to 533 noninverting output terminal, and 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 differential inverting input to 532 is couple to differential to 533 reversed-phase output.
In the present embodiment, the differential noninverting output terminal to 533 provides processing signals Sp+.The differential reversed-phase output to 533 provides processing signals Sp-.Processing signals Sp+ and Sp-are a differential wave.In this example, the analog-digital converter 257 of reception & disposal signal Sp is a differential analog-digital converter.
In other embodiments, by the connecting line that changes differential differential type amplifier, the just enlargement factor of capable of regulating amplifier.Please refer to Fig. 5 C, in this embodiment, differential differential type 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 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 differential non-inverting input to 552 receives a voltage division signal V
d.In the present embodiment, processing module 320 has more resistance R 1 and R2.Resistance R 1 and R2 are series between output terminal 553 and earth level GND, and processing signals Sp is carried out to dividing potential drop, 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 the differential differential type amplifier 550 of capable of regulating.In some embodiment, the enlargement factor of differential differential type amplifier 550 is IM
r1/ IM
r2; Wherein IM
r1for the resistance of resistance R 1, IM
r2for the resistance of resistance R 2.
In the present embodiment, because differential differential type amplifier 550 is Single-end output, therefore, can utilize an analog-digital converter to process the processing signals Sp that differential differential type amplifier 550 is exported.In other embodiments, processing module 320 has the differential differential type amplifier of multiple series connection.By the quantity that controls differential differential type amplifier, the just enlargement factor of capable of regulating processing module 163.Please refer to Fig. 5 D, in this embodiment, processing module 320 has differential differential type amplifier 571～573.Differential differential type amplifier 571～573 is cascaded.
As shown in the figure, the connected mode of differential differential type amplifier 571 and 572 is identical with the differential differential type amplifier 530 of Fig. 5 B.In addition, the connected mode of differential differential type amplifier 573 is identical with the differential differential type amplifier 550 of Fig. 5 C.Therefore, the operating principle of differential differential type amplifier 571～573 is no longer described.
In this embodiment, by controlling the series connection quantity of differential differential type amplifier or the resistance of adjusting resistance R1 and R2, all enlargement factors of capable of regulating processing module 320.Therefore, in the time that the first subsignal PS1 and the second subsignal PS2 input to processing module 320, processing module 320 is carried out difference processing to the first subsignal PS1 and the second subsignal PS2, in order to produce a processing signals Sp, and export processing signals Sp by output terminal 574, now, processing signals Sp is an enhanced signal.
Take Fig. 5 D as example, to suppose, the enlargement factor of differential differential type amplifier 571～573 is 2, and the amplitude of subsignal PS1 and PS2 is assumed to be X.After the processing of differential differential type amplifier 571～573, the amplitude of processing signals Sp is 8X.Due to processing module 320 can amplifying signal variable quantity, and in processing 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, in the time that determining device 231 moves according to processing signals Sp, can significantly improve the accuracy of determining device 231.
Fig. 6 is a circuit framework schematic diagram of differential differential type amplifier of the present utility model.As shown in the figure, differential differential type 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 amplifies differential to 610 and 630 output, in order to export processing signals Sp.Electric current portion 690 and 695 is in order to provide fixed current.
Fig. 7 is a process flow diagram of control method of the present utility model.Control method of the present utility model, in order to control a contact panel, occurs in touch action and the touch position on contact panel in order to detecting.The utility model does not limit the kind of contact panel.As long as can export according at least one touch action the panel of corresponding signal, 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 number to drive signal 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.How the utility model processes detection signal if not limiting.In one embodiment, amplify detection signal, in order to produce an amplifying signal, then amplifying signal is carried out to filtering processing.In another embodiment, omit amplification procedure, directly detection signal is carried out to filtering processing, 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 be using output signal as the first subsignal, and delay output signal, then by signal the second subsignal after postponing.In another embodiment, phase delay module 310 delay output signals, with so that the first subsignal and the second subsignal differ a particular phases, as 180 degree.
Then, calculate the difference of first and second subsignal, in order to produce a processing signals (step 750).In one embodiment, utilize one first differential differential type amplifier to process the first subsignal and the second subsignal, in order to produce processing signals.In other embodiments, can utilize the differential differential type amplifier of multiple series connection to process first and second subsignal.When the moment of being on duty fraction amplifier calculates the difference of the first subsignal and the second subsignal, can eliminate the low-frequency noise of the first subsignal and the second subsignal simultaneously.In addition, if when differential differential type amplifier being connected into negative feedback or utilizing other assembly (as resistance) to connect differential differential type amplifier, the enlargement ratio of the differential differential type amplifier of capable of regulating, thereby can produce larger change amount signal (being processing signals).In one embodiment, processing signals is a differential wave.
Then,, according to processing signals, judge contact panel whether touched (step 770).In one embodiment, in the time that processing signals is a differential wave, can utilize a differential analog digital comparer conversion process signal, in order to produce a digital signal.In other embodiments, in the time that 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.In the time that contact panel is touched, can opens corresponding application program, or switch the picture of contact panel.
By the output signal that postpones contact panel, just can obtain two subsignals.Recycle differential differential amplifier and integrate two subsignals, just the low-frequency noise Xiang Hu Arrived of two subsignals can be disappeared, thereby the output signal of reduction contact panel is subject to the degree of low frequency noises.In addition, integrating after two subsignals, can obtain a processing signals with large amplitude.Because the amplitude of processing signals is quite clear and definite, therefore, if judge that by processing signals whether contact panel is touched, can significantly improve the accuracy of judgement action.
Although the utility model discloses as above with several preferred embodiments, so it is not in order to limit the utility model, and any those of ordinary skills, not departing from spirit and scope of the present utility model, when changing arbitrarily and retouching.In addition, scope of the present utility model is not limited to combination, function, method or the step of existing or future developed specific program, machine, manufacture, material, in its essence, carry out with according to the identical function of embodiment described in the utility model or reach identical result.Therefore the scope that, protection domain of the present utility model ought define depending on appended claim is as the criterion.In addition, each claim is construed as an embodiment independently, and the combination of various claim and embodiment is all in scope of the present utility model.
Claims (20)
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 differential type amplifier.
5. control device according to claim 4, is characterized in that, this first differential differential type 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 noninverting output terminal, couples this first inverting input; And
One reversed-phase output, couples this second inverting input, and wherein this noninverting output terminal and this reversed-phase output are exported 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 converter, couples this reversed-phase output and this noninverting output terminal, 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 differential type amplifier, one first resistance and one second resistance, and this second differential differential type amplifier has:
One the 3rd inverting input, couples this reversed-phase output;
One the 3rd non-inverting input, couples this noninverting output terminal;
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 resistance is series between this output terminal and this earth level, in order to this voltage division signal to be provided.
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 differential type amplifier and one first resistance and one second resistance, and this differential differential type 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 resistance is series between this output terminal and this earth level, in order to this voltage division signal to be provided.
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 control system, 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.
12. control system according to claim 11, 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.
13. control system according to claim 11, 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.
14. control system according to claim 13, is characterized in that, this processing module is one first differential differential type amplifier.
15. control system according to claim 14, is characterized in that, this first differential differential type 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 noninverting output terminal, couples this first inverting input; And
One reversed-phase output, couples this second inverting input, and wherein this noninverting output terminal and this reversed-phase output are exported the differential wave between this first and second subsignal.
16. control system according to claim 15, is characterized in that, this determining device comprises:
One differential analog-digital converter, couples this reversed-phase output and this noninverting output terminal, 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.
17. control system according to claim 15, is characterized in that, this processing module more comprises one
Two differential differential type amplifiers and one first resistance and one second resistance, this second differential differential type amplifier has:
One the 3rd inverting input, couples this reversed-phase output;
One the 3rd non-inverting input, couples this noninverting output terminal;
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 resistance is series between this output terminal and this earth level, in order to this voltage division signal to be provided.
18. control system according to claim 17, 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.
19. control system according to claim 13, is characterized in that, this processing module comprises a differential differential type amplifier and one first resistance and one second resistance, and this differential differential type 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 resistance is series between this output terminal and this earth level, in order to this voltage division signal to be provided.
20. control system according to claim 19, 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745009.6U CN203630755U (en) | 2013-11-21 | 2013-11-21 | Control system and device of touch panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745009.6U CN203630755U (en) | 2013-11-21 | 2013-11-21 | Control system and device of touch panel |
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| CN203630755U true CN203630755U (en) | 2014-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656466A (en) * | 2013-11-21 | 2015-05-27 | 宸鸿科技(厦门)有限公司 | Control system and device of touch control panel and detection method |
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- 2013-11-21 CN CN201320745009.6U patent/CN203630755U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656466A (en) * | 2013-11-21 | 2015-05-27 | 宸鸿科技(厦门)有限公司 | Control system and device of touch control panel and detection method |
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