CN202502480U - Touch sensing device and programmable controller thereof - Google Patents
Touch sensing device and programmable controller thereof Download PDFInfo
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- CN202502480U CN202502480U CN2011205767929U CN201120576792U CN202502480U CN 202502480 U CN202502480 U CN 202502480U CN 2011205767929 U CN2011205767929 U CN 2011205767929U CN 201120576792 U CN201120576792 U CN 201120576792U CN 202502480 U CN202502480 U CN 202502480U
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Abstract
The utility model discloses a touch sensing device and a programmable controller thereof. The programmable controller comprises a plurality of universal pins, a control circuit and a plurality of switching units. The control circuit is used to record the corresponding relationship defined between the plurality of universal pins and a plurality of sensing lines of a touch panel, and between the plurality of universal pins and a plurality of driving lines of the touch panel. The plurality of switching units are connected with the plurality of universal pins correspondingly, and used to receive a switching signal generated by the control circuit according to the corresponding relationship separately, wherein each of the switching units is used to connect the universal pin connected correspondingly to a sensing circuit or a driving circuit selectively according to the received switching signal. The programmable controller can be used to allow the designer of the touch sensing device to set the corresponding relationship between the plurality of universal pins and the plurality of driving lines, and between the plurality of universal pins and the plurality of sensing lines, so the programmable controller can be applied to various different specifications of touch panels.
Description
Technical field
The utility model is relevant for a kind of touch sensing device, particularly relevant for a kind of programmable controller and use its touch sensing device.
Background technology
Along with the progress of semiconductor and circuit design technique, gradually adopted touch sensing device as man-machine interface in hand-held device or other electronic installations, the touch-control input signal that receives touch sensing device thus and produced.
Please with reference to Figure 1A, Figure 1A is a kind of functional block diagram of traditional touch sensing device.Touch sensing device 10 comprises contact panel 101 and controller 102, and wherein contact panel 101 for example is a projected capacitive touch panel.Contact panel 101 comprises many drive wire D0～D27 and many sense wire S0～S14; Wherein drive wire D0～D27 and sense wire S0～S14 hand over to form a sensing electrode array more, and the crossover point of each drive wire D0～D27 and each sense wire S0～S14 is that coupling forms an electric capacity (figure does not show).In addition, drive wire D0～D27 and sense wire S0～S14 are further through corresponding respectively driving pin position D0 '～D27 ' and sensing pin position the S0 '～S14 ' that is connected to controller 102 of lead.Thus; Controller 102 is able to produce in regular turn drive signal to drive wire D0～D27; And receive the sensing signal of sense wire S0～S14 in regular turn; And then change the zone of on contact panel 101, being touched with the interpretation user according to the appearance value that the sensing signal that is received calculates each electric capacity on the sensing electrode array.
In the design of traditional touch sensing device 10, often all be that contact panel 101 specifications (as: panel size, sensing resolution etc.) that demand is arranged earlier afterwards, arrange in pairs or groups by the controller of selecting again to be fit to 102.Yet; Controller 102 has specific standard when design; That is to say; Driving pin position the D0 '～D27 ' of controller 102 and the position, pin position of sensing pin position S0 '～S 14 ' promptly are changeless with quantity after the design completion, so each controller is difficult for being applicable to the contact panel of different size, and form more application limitations.To this, the manufacturer of controller tends to reserve as much as possible sensing pin position and/or drives the pin position when design, in the hope of supporting the contact panel of more multiple different size.For example, Figure 1A The controller 102 can be supported the contact panel of maximum 16 sense wires and 32 drive wires.
Though the design of above-mentioned reservation more sensing pin position and/or driving pin position can let controller have preferable application; But all in all; The position, pin position of the sensing pin position of controller and driving pin position and quantity are still fixing, and is therefore still not enough on application of elastic.Please with reference to Figure 1B, Figure 1B is the functional block diagram of another kind of traditional touch sensing device, is used for explaining that controller can't support a kind of practical situation of contact panel.Controller 112 among Figure 1B has 16 sensing pin position S0 '～S15 ' and 32 driving pin position D0 '～D31 ', but contact panel 111 has 18 sense wire S0～S 17 and 27 drive wire D0～D26.Thus, controller 112 will form all sense wire S0～S17 that sensing pin position S0 '～S15 ' is unable to cope with contact panel 111, and drives the situation that can't be suitable for of pin position D0 '～D31 ' more than all drive wire D0～D26 of contact panel 111.
Moreover, because the sensing pin position of traditional controller fixes with driving the pin bit position, therefore during the circuit layout of the lead between drive wire that carries out controller and contact panel and sense wire, often have the certain difficulty degree.Please with reference to Fig. 1 C, Fig. 1 C is the functional block diagram of another kind of traditional touch sensing device.Shown in Fig. 1 C; Sense wire S0～the S7 of contact panel 121 and S8～S14 lay respectively at the upper right side and the left downside of contact panel 121; And, will form the layout situation of cabling of intersecting in order to the lead that connects sensing pin position S0 '～S14 ' and sense wire S0～S14 on circuit board or the soft board for corresponding sensing pin position the S0 '～S7 ' and sensing pin position S8 '～S14 ' that is connected in controller 122 respectively.So, just can only solve the situation of cabling of intersecting during design through the laminate that increases circuit board or soft board.But because the signal that transmitted is the small anaiog signal of semaphore in the lead, the lead that therefore intersects still interferes with each other easily, and causes the electric property of whole touch sensing device to descend, even has the situation that makes a mistake when serious.
The utility model content
The purpose of the utility model is to provide a kind of touch sensing device and programmable controller thereof; Said programmable controller can let the deviser of touch sensing device set many drive wires and the corresponding relation between many sense wires of a plurality of general pin position and the contact panel of programmable controller; Let the programmable controller can set each general pin position flexibly for driving pin position or sensing pin position; With contact panel, and effectively optimize the circuit layout between contact panel and the programmable controller in response to different size.
The utility model provides a kind of programmable controller, and wherein said programmable controller comprises a plurality of general pin position, control circuit and a plurality of switch unit.The corresponding relation of control circuit in order to define between many sense wires writing down a said a plurality of general pin position and a contact panel and many drive wires.A plurality of switch units are corresponding to connect a plurality of general pin position, and receives the said control circuit foundation switching signal that said corresponding relation produced respectively.Each switch unit optionally is connected to sensing circuit or driving circuit according to the switching signal that is received with the general pin position of the corresponding connection of institute.
This new embodiment also provides a kind of touch sensing device, and wherein said touch sensing device comprises contact panel and above-mentioned programmable controller.Contact panel has many sense wires and many drive wires.
According to above-mentioned design; Control the general pin position that arbitrary correspondence is connected in drive wire when control circuit and optionally be connected to driving circuit; When transmitting drive signal that driving circuit produces to the corresponding drive wire that connects; Control circuit is further controlled the general pin position that all correspondences are connected in sense wire in regular turn and optionally is connected to sensing circuit, is sent to sensing circuit to transmit the sensing signal that the corresponding sense wire coupling that connects produces.
According to above-mentioned design, said control circuit is further controlled two input ends that switch unit that two correspondences are connected in sense wire optionally is connected to sensing circuit simultaneously.
According to above-mentioned design, each switch unit further optionally is connected to reference voltage end or high impedance end according to the switching signal that received with the general pin position of the corresponding connection of institute.
According to above-mentioned design, each switch unit adopts the design of combination, selector switch or the multiplexer of a plurality of change-over switches.
According to above-mentioned design, said programmable controller is for integrating the single-chip system of control circuit, a plurality of switch unit, driving circuit and sensing circuit.
According to above-mentioned design, said control circuit comprises storage unit, read-write control unit and signal generation unit.Read-write control unit connects storage unit, is used for receiving said corresponding relation, and said corresponding relation is recorded in said storage unit.The signal generation unit connects said read-write control unit, obtains said corresponding relation through said read-write control unit from said storage unit, and produces said a plurality of switching signal according to said corresponding relation.
In sum, the programmable controller of the utility model touch sensing device that embodiment provides can increase the application of elastic of programmable controller in response to the contact panel of all size, and promotes the utilization factor of all general pin positions of programmable controller.In addition; More can come suitably to set the function (driving or sensing) of each general pin position of programmable controller according to the position, general pin position that goes out line position and programmable controller of the sense wire of actual contact panel and drive wire; Use the puzzlement of elimination circuit layout on circuit board or soft board and reduce degree of difficulty, let on circuit board or the soft board to be able to avoid to occur to intersect the situation of cabling in order to connect contact panel and lead between the programmable controller.
For enabling further to understand the characteristic and the technology contents of the utility model; See also following detailed description and accompanying drawing about the utility model; But these explanations with appended graphic only be to be used for explaining the utility model, but not the interest field of the utility model is done any restriction.
Description of drawings
Figure 1A is a kind of functional block diagram of traditional touch sensing device.
Figure 1B is the functional block diagram of another kind of traditional touch sensing device.
Fig. 1 C is the functional block diagram of another kind of traditional touch sensing device.
Fig. 2 is the functional block diagram of the touch sensing device that provides of the utility model embodiment.
Fig. 3 A is the details circuit diagram of the touch sensing device that provides of the utility model embodiment.
Fig. 3 B is the details circuit diagram of the touch sensing device that provides of another embodiment of the utility model.
Fig. 4 is the functional block diagram of the control circuit of the utility model embodiment.
Fig. 5 A is the synoptic diagram of the storage unit institute recorded corresponding relation of the utility model embodiment.
Fig. 5 B is the synoptic diagram of the storage unit institute recorded corresponding relation of another embodiment of the utility model.
Wherein, description of reference numerals is following:
10,11,12,20: touch sensing device
101,111,121,201: contact panel
102,112,122: controller
202: the programmable controller
2021,2021 ': sensing circuit
2022,2022 ', 40: control circuit
2023: driving circuit
41: storage unit
42: read-write control unit
43: the signal generation unit
D0～D39: drive wire
D0 '～D31 ': drive the pin position
I+, I-: input end
G0～G63: general pin position
S0～S21: sense wire
S0 '～S15 ': sensing pin position
SW0～SW63, SW0 '～SW63 ': switch unit
Vref: reference voltage end
Embodiment
Please with reference to Fig. 2, Fig. 2 is the functional block diagram of the touch sensing device that provides of the utility model embodiment.Touch sensing device 20 comprises contact panel 201 and programmable controller 202.The contact panel 201 of present embodiment comprises many sense wire S0～S21 and drive wire D0～D39, wherein between sense wire S0～S21 and the drive wire D0～D39 is to be electrically insulated and to hand over to form a sensing electrode array more, so that the function of touch sensing to be provided.In addition; Be different from traditional controller; Programmable controller 202 comprises a plurality of general pin position G0～G63, lets the deviser of touch sensing device 20 be able to define voluntarily according to the circuit layout that meets the cabling rule track lengths restriction etc. of cabling, sense wire and drive wire (as: avoid producing intersect) between contact panel 201 and the programmable controller 202 each pin bit function (driving or sensing) of the general pin position G0～G63 of programmable controller 202.In other words, arbitrary general pin position G0～G63 can be sensing pin position with deviser's definition or drive the pin position.
In the embodiment of Fig. 2; Considering circuit layout according to the specification of contact panel 201 (as: panel size, ratio, sensing resolution, drive wire and sense wire go out line position etc.); To avoid producing under the situation of intersection cabling; Sense wire S0～the S10 of present embodiment, S11～S21 are connected to general pin position G0～G10, G61～G51 through lead respectively, and drive wire D0～D39 is connected to general pin position G11～G50 through lead respectively.To this; The deviser just can further define each pin position effect of the general pin position G0～G63 of programmable controller 202 according to the circuit layout of being accomplished; General pin position G0～G10, G61～G51 are defined as the sensing pin position in order to the sensing signal that receives sense wire S0～S10, S 11～S21 respectively, and general pin position G11～G50 is defined as respectively in order to transmit the driving pin position of drive signal to drive wire D0～D39.
In addition; Because present embodiment is for fear of the situation that produces the intersection cabling; The general pin position G0～G63 of programmable controller 202 is non-to come corresponding sense wire S0～S21 and the drive wire D0～D39 that connects contact panel 201 according to number order; Therefore programmable controller 202 more can further be managed the running of all general pin position G0～G63 according to the corresponding relation that defines between general pin position G0～G63 and sense wire S0～S21 and the drive wire D0～D39, to reach the sense wire S0～S21 that controls contact panel 201 effectively and the effect of drive wire D0～D39.What be worth explanation is, corresponding relation can for example be that the mode design with comparison list appears, yet the presentation mode of corresponding relation is not in order to limit the utility model.
In actual operation; Programmable controller 202 can transmit drive signal to the corresponding drive wire D0～D39 that connects through being defined as the general pin position G11～G50 that drives the pin position in regular turn; And through arbitrary when being defined as the general pin position G11～G50 that drives the pin position and transmitting drive signal to the corresponding drive wire D0 that connects～D39, programmable controller 202 is to receive sensing signal through all general pin position G0～G10, G61～G51 that are defined as sensing pin position in regular turn in addition.So; Programmable controller 202 is able to receive to each drive wire D0～D39 respectively the sensing signal of all sense wire S0～S21; And then accomplish the scanning of whole sensing electrode array, and judge the zone that the user is touched on contact panel 201 according to all received sensing signals.Subsidiary one carry be, the order of programmable controller 202 scanning sensing electrode arrays limit by present embodiment, programmable controller 202 more can transmit drive signal and reception sensing signal through the order of user's definition.
In addition; Compared to the driving pin number amount of traditional controller and sensing pin number amount must be respectively greater than the number of drive lines and the sense wire quantity of contact panel; The programmable controller 202 of present embodiment has bigger elasticity, can be applicable to the contact panel of the quantity summation of any drive wire and sense wire smaller or equal to the general pin number amount of programmable controller 202.For example, the programmable controller 202 of present embodiment go for drive wire and sense wire the quantity summation at 64 contact panels with interior all size.
For circuit framework and the operation situation that further specifies touch sensing device 20; Please the framework based on Fig. 2 comes with reference to Fig. 3 A; Fig. 3 A is the details circuit diagram of the touch sensing device that provides of the utility model embodiment; And only local four drive wire D0～D3 and four the sense wire S0～S3 that show contact panel 201 of Fig. 3 A hand over the part sensing electrode array that forms more, and wherein the crossover point of each drive wire D0～D3 and each sense wire S0～S3 is that coupling forms an electric capacity.
On actual design; Control circuit 2022 is except producing switching signal G0S [0:2]～G63S [0:2] according to corresponding relation; More can further control the generation sequential of switching signal G0S [0:2]～G63S [0:2], the running that connects with the switching of control switch unit SW0～SW63.In other words; Exist under the condition of corresponding relation, control circuit 2022 is able to control the transmission drive signal to the order that is defined as general pin position G11～G50 that drives the pin position and the general pin position G0～G10 that is customized for sensing pin position, G61～G51 reception sensing signal according to the required scanning sequency of actual design.
For instance; Control circuit 2022 is controlled the corresponding switch unit SW11～SW50 that is connected in drive wire D0～D39 one by one and optionally is connected to driving circuit 2023; In order to transmit the extremely corresponding drive wire D0～D39 that connects of drive signal that driving circuit 2023 produces in regular turn; And when the switch unit SW11～SW50 that is connected in drive wire D0～D39 when the arbitrary correspondence of control circuit 2022 control optionally is connected to driving circuit 2023; Control circuit 2022 is to control switch unit SW0～SW10, the S61～S51 that all correspondences are connected in sense wire S0～S21 in regular turn optionally to be connected to sensing circuit 2021 in addition; To transmit sensing signal to the sensing circuit 2021 of the said corresponding sense wire S0～S21 that connects in regular turn, let sensing circuit 2021 be able to receive the sensing signal of all sense wire S0～S21 to a drive wire D0～D39 who drives at present.
What deserves to be mentioned is that in the embodiment of Fig. 3 A, sensing circuit 2021 is to use the mode of single-ended sensing to obtain sensing signal.Therefore in this embodiment; Switch unit SW0～SW63 is respectively the design of adopting the combination of three change-over switches, and according to the signal value of switching signal G0S [0:2]～G63S [0:2] the general pin position G0～G63 of the corresponding connection of institute optionally is connected to driving circuit 2023, sensing circuit 2021 or reference voltage end Vref respectively.Wherein, It is that all switch unit SW0～SW63 of control are connected in reference voltage end Vref that programmable controller 202 is preset; Let switch unit SW0～SW63 when Be Controlled is not connected in sensing circuit 2021 or driving circuit 2022; All corresponding general pin position G0～G63 that connect all can maintain a magnitude of voltage, and drive wire D0～D39 and the sense wire S0～S21 that avoids correspondence to be connected in switch unit SW0～SW63 is interfered easily and forms the state of unsteady (Floating).
In the present embodiment; Embodiment corresponding to Fig. 2; In Fig. 3 A, switch unit SW0～SW3 (or general pin position G0～G3) corresponding respectively connects sense wire S0～S3, and switch unit SW11～SW14 (corresponding respectively drive wire D0～D3 that connects of or general pin position G11～G14).In addition, switching signal G0S [0:2]～G63S [0:2] is the signal of one three bit (3bits).By way of example, when signal value=[001], represent selectivity to be connected to driving circuit 2023; When signal value=[010], represent selectivity to be connected to sensing circuit 2021; And when signal value=[100], represent selectivity to be connected to reference voltage end.Yet, it should be noted that the type of embodiment and switching signal G0S [0:2]～G63S [0:2] of switch unit SW0～SW63 is all non-in order to restriction the utility model.In another embodiment, each switch unit SW0～SW63 can also adopt the design of a multiplexer or a selector switch.
Please with reference to Fig. 3 B, Fig. 3 B is the details circuit diagram of the touch sensing device that provides of another embodiment of the utility model.Roughly the embodiment with Fig. 3 A is identical for the framework of the embodiment of Fig. 3 B and running; Difference be in; The sensing circuit 2021 ' of Fig. 3 B is to use the mode of differential sensing to obtain sensing signal, and in other words the sensing circuit 2021 ' of present embodiment is to adopt twin-channel design and have two input end I+, I-.In addition; Each switch unit SW0 '～SW63 ' can for example be the design of adopting the combination of four change-over switches, and wherein four change-over switches are respectively two input end I+, I-and the reference voltage end Vref that is used for being connected in driving circuit 2023, sensing circuit 2021 '.Relative, the switching signal G0S that control circuit 2022 ' produced [0:3]～G63S [0:3] then is the signal that is designed to nibble (4bits).For instance, when signal value=[0001], represent selectivity to be connected to driving circuit 2023; When signal value=[0010], represent selectivity to be connected to the input end I+ of sensing circuit 2021 '; When signal value=[0100], represent selectivity to be connected to the input end I-of sensing circuit 2021 '; And when signal value=[1000], represent selectivity to be connected to reference voltage end Vref.
Thus; Present embodiment is in running; When switch unit the SW11 '～SW50 ' that is connected in drive wire D0～D39 when the arbitrary correspondence of control circuit 2022 ' control optionally is connected to driving circuit 2023; Control circuit 2022 ' is being controlled on switch unit SW0 '～SW10 ' that all correspondences are connected in sense wire S0～S21, the S61 '～S51 ' in regular turn; Be to control switch unit SW0 '～SW10 ' that two correspondences are connected in sense wire S0～S21, two input end I+, the I-that S61 '～S51 ' optionally is connected to sensing circuit 2021 ' respectively simultaneously, to carry out differential sensing at every turn.
Please follow with reference to Fig. 4, Fig. 4 is the functional block diagram of the control circuit of the utility model embodiment.Control circuit 40 can be used for realizing the for example control circuit 2022,2022 ' of Fig. 3 A and Fig. 3 B.Control circuit 40 comprises storage unit 41, read-write control unit 42 and signal generation unit 43.Read-write control unit 42 connects storage unit 41, is used for receiving the deviser defined general pin position of touch sensing device and the corresponding relation between sense wire and the drive wire, and corresponding relation is recorded in storage unit 41.Signal generation unit 43 connects read-write control unit 42; In order to obtain institute's recorded corresponding relation in the storage unit 41 through read-write control unit 42; And according to said corresponding relation generation switching signal G0S～G63S; With all switch unit SW0～SW63 of control chart 3A and Fig. 3 B, the running of SW0 '～SW63 ', and then reach the function of managing all general pin position G0～G63.
Be noted that switching signal G0S～G63S can be different according to the switch unit of actual design.For instance, when switch unit was the switch unit SW0～S63 as Fig. 3 A, then switching signal G0S～G63S was switching signal G0S [the 0:2]～G63S [0:2] as Fig. 3 A; When switch unit was the switch unit SW0 '～S63 ' as Fig. 3 B, then switching signal G0S～G63S was switching signal G0S [the 0:3]～G63S [0:3] as Fig. 3 B.
Then, please accordingly with reference to Fig. 2, Fig. 4 and Fig. 5 A, Fig. 5 A is the synoptic diagram of the storage unit institute recorded corresponding relation of the utility model embodiment.The synoptic diagram of Fig. 5 A is the corresponding relation that is used for explaining that drive wire D0～D39 of utilizing contact panel 201 and sense wire S0～S21 come the general pin position G0～G61 of corresponding record programmable controller 202 for benchmark.In design, storage unit 41 can be apprised of contact panel 201 and have what drive wire D0～D39 and sense wire S0～S21, to be used for putting the information of number of drive lines and sense wire quantity.The working storage of address 0x0000～0x0015 that general pin position G0～G10 that sense wire S0～S21 is connected, G61～G51 are recorded in storage unit 41 in regular turn, and general pin position G11～G50 of being connected of drive wire D0～D39 is recorded in the working storage of the address 0x0016～0x003D of storage unit 41 in regular turn.For instance, in Fig. 5 A, the general pin position that sense wire S21 is connected is G51, and therefore the numerical value of general pin position G51 can be recorded in the working storage of address 0x0015; And the general pin position that drive wire D38 is connected is G49, and therefore the numerical value of general pin position G49 can be recorded in the working storage of address 0x003C.
Please with reference to Fig. 2, Fig. 4 and Fig. 5 B, Fig. 5 B is the synoptic diagram of the storage unit institute recorded corresponding relation of another embodiment of the utility model.The embodiment that is different from Fig. 5 A, the synoptic diagram of Fig. 5 B are used for explaining that the general pin position G0～G63 that utilizes programmable controller 202 comes the drive wire D0～D39 of corresponding record contact panel 201 and the corresponding relation of sense wire S0～S21 for benchmark.Storage unit 41 can be used for putting the information of the general pin number amount of programmable controller 202.Moreover the working storage of the address 0x0000～0x003F of storage unit 41 is to be used for writing down in regular turn the wiring state (as: connect sense wire S0～S21, connect drive wire D0～D39 or empty wiring) of general pin position G0～G63.For instance, in Fig. 5 B, general pin position G51 is the corresponding sense wire S21 that connects, so the numerical value of sense wire S21 can be recorded in the working storage of address 0x0033; And general pin position G49 is corresponding connection drive wire D38, so the numerical value of drive wire D38 can be recorded in the working storage of address 0x0031.
Need to prove that the recording mode of the corresponding relation that above-mentioned Fig. 5 A and Fig. 5 B are disclosed not is in order to qualification the utility model, and the capacity of storage unit 41 can be relevant with numerical value such as sense wire quantity, number of drive lines and general pin number amounts.
In addition, what deserves to be mentioned is that the programmable controller in the foregoing description is the design of adopting the single-chip system, with direct integration driving circuit, sensing circuit, control circuit and a plurality of switch unit.Yet in other kinds embodiment, driving circuit, sensing circuit maybe not can be integrated in the same wafer with a plurality of switch units, control circuit.In other words, in other kinds embodiment, the programmable controller possibly only comprise a plurality of switch units, control circuit, and driving circuit, sensing circuit are to be independent of outside the programmable controller.
In sum, the utility model embodiment can increase the application of elastic of programmable controller, and promotes the utilization factor of all general pin positions of programmable controller.The deviser of touch sensing device can come suitably to set the function of each general pin position of programmable controller according to the position, general pin position that goes out line position and programmable controller of the sense wire of actual contact panel and drive wire, and and then the corresponding relation between general pin position and sense wire and the drive wire is recorded in the programmable controller.So, the programmable controller can be sent to the order of drive wire and the order that sensing circuit self-induction survey line receives sensing signal with drive signal according to this corresponding relation control Driver Circuit.In addition; The function of the self-defined general pin position that the programmable controller provides; More can eliminate the puzzlement of circuit layout on circuit board or the soft board and reduce degree of difficulty, let on circuit board or the soft board to be able to have the circuit layout that meets cabling specification (as: avoid appearance intersect cabling) in order to connect contact panel and lead between the programmable controller.
The above is merely the embodiment of the utility model, and it is not the claim in order to limitation the utility model.
Claims (11)
1. a programmable controller is characterized in that, comprising:
A plurality of general pin position;
One control circuit is in order to a corresponding relation that defines between many sense wires writing down those general pin positions and a contact panel and many drive wires; And
A plurality of switch units; Connect those general pin positions of this control circuit and corresponding connection; And receive this control circuit respectively and one switch signal according to what this corresponding relation produced, wherein each switch unit optionally is connected to a sensing circuit or one drive circuit according to this switching signal that is received with the general pin position of the corresponding connection of institute.
2. programmable controller as claimed in claim 1; It is characterized in that; Control the switch unit that arbitrary correspondence is connected in drive wire when this control circuit and optionally be connected to this driving circuit; When transmitting a drive signal that this driving circuit produces to drive wire that this correspondence connects; This control circuit is further controlled the switch unit that all correspondences are connected in sense wire in regular turn and optionally is connected to this sensing circuit, to transmit a sensing signal that sense wire coupling that this correspondence connects produces to this sensing circuit.
3. programmable controller as claimed in claim 2 is characterized in that, this control circuit is further controlled two input ends that switch unit that two correspondences are connected in sense wire optionally is connected to this sensing circuit simultaneously.
4. programmable controller as claimed in claim 1 is characterized in that, each switch unit further optionally is connected to a reference voltage end or a high impedance end according to this switching signal of being received with this general pin position of the corresponding connection of institute.
5. programmable controller as claimed in claim 1 is characterized in that, each switch unit adopts the design of combination, a selector switch or a multiplexer of a plurality of change-over switches.
6. programmable controller as claimed in claim 1 is characterized in that, said control circuit comprises:
One storage unit;
One read-write control unit connects this storage unit, is used for receiving this corresponding relation, and this corresponding relation is recorded in this storage unit; And
One signal generation unit connects this read-write control unit, and passes through this corresponding relation that this read-write control unit obtains this unit records, and produces those switching signals according to this corresponding relation.
7. a touch sensing device is characterized in that, comprising:
One contact panel comprises many sense wires and many drive wires;
One programmable controller comprises;
A plurality of general pin position;
One control circuit is in order to a corresponding relation that defines between those sense wires of writing down those general pin positions and this contact panel and those drive wires; And
A plurality of switch units; Connect those general pin positions of this control circuit and corresponding connection; And receive this control circuit respectively and one switch signal according to what this corresponding relation produced, wherein each switch unit optionally is connected to a sensing circuit or one drive circuit according to this switching signal that is received with the general pin position of the corresponding connection of institute.
8. touch sensing device as claimed in claim 7 is characterized in that, each switch unit further optionally is connected to a reference voltage end or a high impedance end according to this switching signal of being received with this general pin position of the corresponding connection of institute.
9. touch sensing device as claimed in claim 7 is characterized in that, each switch unit adopts the design of combination, a selector switch or a multiplexer of a plurality of change-over switches.
10. touch sensing device as claimed in claim 7 is characterized in that, this programmable controller is the single-chip system of this control circuit of integration, those switch units, this driving circuit and this sensing circuit.
11. touch sensing device as claimed in claim 7 is characterized in that, this control circuit comprises:
One storage unit;
One read-write control unit connects this storage unit, is used for receiving this corresponding relation, and this corresponding relation is recorded in storage recalls the unit; And
One signal generation unit connects this read-write control unit, and passes through this corresponding relation that this read-write control unit obtains this unit records, and produces those switching signals according to this corresponding relation.
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| CN2011205767929U CN202502480U (en) | 2011-12-30 | 2011-12-30 | Touch sensing device and programmable controller thereof |
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| CN2011205767929U CN202502480U (en) | 2011-12-30 | 2011-12-30 | Touch sensing device and programmable controller thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103186301A (en) * | 2011-12-30 | 2013-07-03 | 宸鸿光电科技股份有限公司 | Touch-control sensing device and programmable controller |
| CN104936332A (en) * | 2014-03-20 | 2015-09-23 | 东林科技股份有限公司 | Method for driving light-emitting diode chip |
-
2011
- 2011-12-30 CN CN2011205767929U patent/CN202502480U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103186301A (en) * | 2011-12-30 | 2013-07-03 | 宸鸿光电科技股份有限公司 | Touch-control sensing device and programmable controller |
| CN104936332A (en) * | 2014-03-20 | 2015-09-23 | 东林科技股份有限公司 | Method for driving light-emitting diode chip |
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Owner name: TPK TOUCH SOLUTIONS (XIAMEN) INC. Free format text: FORMER OWNER: TRENDON ELECTRONICS CO., LTD. Effective date: 20140904 |
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Effective date of registration: 20140904 Address after: 361009, No. 199, Sakamoto Road, information photoelectric Park, torch hi tech Zone, Fujian, Xiamen Patentee after: TPK Touch Solutions (Xiamen) Inc. Address before: Taipei City, Taiwan, China Patentee before: TrendOn Electronics Co., Ltd. |
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