CN102109914A - Passive integrated circuit structure used for scanning touch panel and control method thereof - Google Patents
Passive integrated circuit structure used for scanning touch panel and control method thereof Download PDFInfo
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- CN102109914A CN102109914A CN2009102154126A CN200910215412A CN102109914A CN 102109914 A CN102109914 A CN 102109914A CN 2009102154126 A CN2009102154126 A CN 2009102154126A CN 200910215412 A CN200910215412 A CN 200910215412A CN 102109914 A CN102109914 A CN 102109914A
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Abstract
A passive integrated circuit structure used for scanning a touch panel is characterized by comprising a master integrated circuit and at least one slave integrated circuit, wherein the slave integrated circuit is coupled with the touch panel and the master integrated circuit and used for scanning the touch panel, and scanning parameters for the slave integrated circuit to scan the touch panel are provided by the master integrated circuit. The invention provides the passive integrated circuit structure and the control method thereof, which can greatly enhance the slave integrated circuit application flexibility and the use efficiency; no hardware is required to be changed; the manufacturing cost is not increased; the scanning speed is effectively increased; and ghost image phenomenon is solved.
Description
Technical field
The present invention relates to a kind of contact panel, specifically, is a kind of passive type integrated circuit architecture and control method thereof that scans contact panel.
Background technology
Utilize active integrated circuit (Integrated Circuit; IC) to scan contact panel be a kind of known technology to framework, described active IC framework is to dispose in advance to scan parameter in secondary (Slave) IC, the stitching that for example scans (Trace), pattern, opportunity and analog parameter etc., described secondary IC scans described contact panel according to the described parameter that scans, and sends scan data to main (Master) IC to judge.When the size of contact panel increases,, can use the secondary IC more than two that the zones of different of contact panel is scanned simultaneously in order to reduce the time of scanning.Because the parameter that scans of every secondary IC is a predefined, and write different firmwares respectively and set different analog parameters because the stitching that scans is different, therefore every secondary IC is the standard specification, only can scan fixing stitching, can't use with other secondary IC exchange, also can't scan the result and reconfigure the new parameter that scans the specific region is scanned once more, except the elasticity that lacks application, more can't solve ghost point phenomenon (Ghost phenomenon) according to it.
So known active integrated circuit (Integrated Circuit; IC) framework scans contact panel and exists above-mentioned all inconvenience and problem.
Summary of the invention
Purpose of the present invention is to propose a kind of passive type integrated circuit architecture and control method thereof that is used to scan contact panel.
Another object of the present invention is to propose a kind of increase and uses flexible passive type integrated circuit architecture and control method thereof.
Another purpose of the present invention, be to propose a kind of passive type integrated circuit architecture that solves ghost point phenomenon and control method thereof with.
For achieving the above object, technical solution of the present invention is:
A kind of passive type integrated circuit architecture that is used to scan contact panel is characterized in that comprising:
One master integrated circuit; And
At least one secondary integrated circuit couples a contact panel and described master integrated circuit, in order to scan described contact panel;
Wherein, described at least one secondary integrated circuit parameter that scans of scanning described contact panel is provided by described master integrated circuit.
The passive type integrated circuit architecture that is used to scan contact panel of the present invention can also be further achieved by the following technical measures.
Aforesaid passive type integrated circuit architecture, the wherein said parameter that scans comprises the stitching that scans, scans pattern and scan analog parameter.
Aforesaid passive type integrated circuit architecture, the wherein said pattern that scans comprises scanning in proper order or specifying and scans.
Aforesaid passive type integrated circuit architecture, the wherein said analog parameter that scans comprises gain, scans time and the accurate position of displacement.
Aforesaid passive type integrated circuit architecture, wherein said at least one secondary integrated circuit describedly are idle armed state during scanning parameter not obtaining.
Aforesaid passive type integrated circuit architecture, wherein said master integrated circuit receives from the scan data of described at least one secondary integrated circuit and judges, to determine whether to reset the parameter that scans of described at least one secondary integrated circuit, make described at least one secondary integrated circuit scan described contact panel once more.
Aforesaid passive type integrated circuit architecture, the wherein said parameter that scans that resets comprises the subregion that scans described contact panel.
Aforesaid passive type integrated circuit architecture, wherein said subregion comprise the zone that ghost point phenomenon may take place.
Aforesaid passive type integrated circuit architecture, wherein said at least one secondary integrated circuit comprises array capacitance touching control integrated circuit.
Aforesaid passive type integrated circuit architecture, wherein said at least one secondary integrated circuit has identical firmware.
Aforesaid passive type integrated circuit architecture comprises more that wherein a universal transport interface is connected between described master integrated circuit and the described at least one secondary integrated circuit.
Aforesaid passive type integrated circuit architecture, wherein said universal transport interface comprises I
2C or SPI.
A kind of control method that is used to scan the passive type integrated circuit architecture of contact panel is characterized in that comprising the following steps:
Mat one master integrated circuit produces an instruction;
Set the parameter that scans that at least one secondary integrated circuit scans a contact panel according to described instruction; And
Described at least one secondary integrated circuit scans described contact panel in response to described instruction with the described parameter that scans.
The control method that is used to scan the passive type integrated circuit architecture of contact panel of the present invention can also be further achieved by the following technical measures.
Aforesaid method is wherein saidly set the described step that scans parameter according to described instruction and is comprised and set the stitching that scans, scan pattern and scan analog parameter.
Aforesaid method wherein more comprises the following steps:
Described at least one secondary integrated circuit is sent to described master integrated circuit with scan data; And
Described master integrated circuit is judged described scan data, whether decision produces one second instruction to reset the parameter that scans of described at least one secondary integrated circuit, makes described at least one secondary integrated circuit scan described contact panel once more according to described second instruction.
Aforesaid method, the wherein said step that scans described contact panel once more comprise and scan the zone that ghost point phenomenon may take place in the described contact panel.
Aforesaid method wherein more comprises through a universal transport interface and transmits described instruction to described at least one secondary integrated circuit.
Aforesaid method wherein more comprises through a universal transport interface and transmits described scan data to described master integrated circuit.
After adopting technique scheme, passive type integrated circuit architecture and the control method thereof that is used to scan contact panel of the present invention has the following advantages:
1. significantly increase application elasticity and the effective utilization of secondary IC.
2. hardware must be do not changed, manufacturing cost can be do not increased.
3. improve capture speed effectively.
4. solve ghost point phenomenon.
Description of drawings
Fig. 1 is the synoptic diagram of the first embodiment of the present invention;
Fig. 2 is that main IC sets the synoptic diagram that secondary IC scans stitching and scans analog parameter;
Fig. 3 is that main IC sets the synoptic diagram that secondary IC scans the combination of stitching;
Fig. 4 is the synoptic diagram of stitching combination;
Fig. 5 is that main IC sets the synoptic diagram that secondary IC scans pattern;
Fig. 6 is that main IC sets the synoptic diagram that secondary IC scans pattern;
Fig. 7 is the synoptic diagram of the second embodiment of the present invention; And
Fig. 8 is the synoptic diagram of the third embodiment of the present invention.
Among the figure, 10, passive type IC framework 12, main IC 13, universal transport interface 14, secondary IC 16, contact panel 18, possible ghost point position 20, possible ghost point position 22, passive type IC framework 24, secondary IC 26, secondary IC 30, secondary IC 32, secondary IC 34, secondary IC 36, secondary IC 38, zone 40, zone 42, zone 44, zone.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is illustrated further.
Now see also Fig. 1, Fig. 1 is the synoptic diagram of the first embodiment of the present invention.As shown in the figure, described passive type (Passive) IC framework 10 is in order to scan contact panel 16.Described contact panel 16 has the stitching TR0 to TRm as the line of induction, and passive type IC framework 10 comprises that a main IC 12 and a secondary IC 14 connect contact panel 16, for example, connect stitching TR0 to TRm.Main IC 12 scans the action of contact panel 16 and the required parameter that scans is provided by universal transport interface 13 control secondary IC 14.In one embodiment, main IC 12 produces instruction and sends secondary IC 14 to set the parameter that scans that it scans contact panel 16 by universal transport interface 13, and secondary IC 14 scans contact panel 16 in response to described instruction with the described parameter that scans.For example, main IC12 sets secondary IC 14 via described instruction and scans stitching TR0 to TRm, and secondary IC 14 scans stitching TR0 to TRm in response to described instruction.The scan data that secondary IC 14 will obtain after will scanning sends main IC 12 to by universal transport interface 13,12 pairs of scan datas from secondary IC 14 of main IC are judged, to determine whether to reset the parameter that scans of secondary IC 14, make secondary IC 14 scan contact panel 16 once more.For example, when the data that scans from secondary IC 14 is judged through main IC 12, during the point phenomenon of thinking that there's something fishy, main IC 12 produces new instruction and sets the subregion that secondary IC 14 scans contact panel 16, the zone of ghost point phenomenon for example may take place, therefore secondary IC 14 scans stitching TRk, TRi, TRh and TRj on the possible ghost point position 18 and 20 in response to described new instruction, judges the actual position of object on contact panel 16 by main IC 12 according to scan data again, solves ghost and puts phenomenon.In one embodiment, when main IC 12 thinks that scan data from secondary IC 14 occurs when unusual, analog digital conversion (Analogy DigitalConvert for example; ADC) be worth when too high or too low, main IC 12 will reset the parameter that scans of secondary IC 14, and make secondary IC 14 scan contact panel 16 once more.
In the present embodiment, secondary IC 14 adopts existing touch-control (TouchPad) IC, and for example therefore array condenser type (Projected Capacitance) touch-control IC must not change hardware, can not increase manufacturing cost.Universal transport interface 13 comprises internal integration circuit (Inter-Integrated Circuit; I
2C) or Serial Peripheral Interface (SerialPeripheral Interface; SPI).The parameter that scans that secondary IC 14 scans contact panel 16 comprises the stitching that scans, scans pattern and scan analog parameter etc., and main IC 12 can scan parameter to described grade and adjust and set.As shown in Figure 2, main IC 12 sets scanning stitching and scanning analog parameter of secondary IC 14 by universal transport interface 13, for example, the scope that scans that main IC 12 sets secondary IC 14 is stitching TR0 to TR7, and the analog parameter that scans that scans stitching TR0TR7 use, as gaining, scan the accurate position of time and displacement etc., secondary IC 14 scans stitching TR0 to TR7 with the analog parameter of setting that scans.As shown in Figure 3, main IC 12 sets the combination of the stitching that secondary IC 14 scan by universal transport interface 13, for example, the stitching (TR0, TR1, TR2, TR3) that main IC 12 will be as shown in Figure 4 under the condition that the internal memory of secondary IC 14 is allowed is set among the secondary IC 14 with the combination of stitching (TR4, TR5, TR6, TR7).When ghost point phenomenon took place, main IC 12 assigned the instruction that combination scans, and secondary IC 14 scans according to the stitching combination of described instruction to possible ghost point position, with the position of correct judgement object on contact panel 16.As shown in Figure 5, the pattern that scans that main IC 12 sets secondary IC 14 by universal transport interface 13 is for scanning in proper order, and secondary IC 14 scans stitching TR0, TR1, TR2 in regular turn ...As shown in Figure 6, main IC 12 sets secondary IC 14 by universal transport interface 13 the pattern that scans scans for specifying, and 14 of secondary IC scan the stitching of main IC 12 appointments, for example stitching TR1 and TR6.
Fig. 7 shows the second embodiment of the present invention, and passive type IC framework 22 is in order to scan contact panel 16.Contact panel 16 has the stitching TR0 to TRm as the line of induction, and passive type IC framework 22 comprises main IC 12 and secondary IC 24 and 26, and secondary IC 24 and 26 connects stitching TR0 to TRn and stitching TRn+I to TRm respectively.Main IC 12 by universal transport interface 13 control respectively secondary IC 24 and 26 scan the action of stitching TR0 to TRn and stitching TRn+1 to TRm and provide must scan parameter.In the present embodiment, secondary IC 24 and 26 adopts existing touch-control IC, and for example therefore array capacitance touching control IC must not change hardware, can not increase manufacturing cost.Universal transport interface 13 comprises I
2C or SPI.Main IC 12 control secondary IC 24 and 26 operation be embodiment as the aforementioned, no longer repeats.Because secondary IC 24 and 26 can scan simultaneously and each only is responsible for scanning the part stitching, suppose m=40 and n=20, therefore as long as cost scans the time of 20 stitchings just can be scanned the contact panel 16 with 40 stitchings one time, improve capture speed effectively.
Fig. 8 shows the third embodiment of the present invention, contact panel 16 is divided into four zones 38,40,42 and 44, passive type IC framework comprises a main IC 12 and four secondary IC 30,32,34 and 36, and secondary IC 30,32,34 and 36 is join domain 38,40,42 and 44 respectively.Main IC 12 controls the parameter that scans that secondary IC 30,32,34 and 36 scans zone 38,40,42 and 44 action and institute's palpus is provided respectively by universal transport interface 13.In the present embodiment, secondary IC 30,32,34 and 36 adopts existing touch-control IC, and for example therefore array capacitance touching control IC must not change hardware, can not increase manufacturing cost.Universal transport interface 13 comprises I
2C or SPI.Main IC 12 control secondary IC 30,32,34 and 36 operation be embodiment as the aforementioned, no longer repeats.Because secondary IC 30,32,34 and 36 can scan simultaneously and each only is responsible for scanning the subregion of contact panel 16, so can improve capture speed effectively.
In addition, can change the quantity of secondary IC, by the secondary IC of a main IC control varying number according to the requirement of time.
The present invention adopts the design concept of entirely passive type, the motion flow of secondary IC is controlled by a main IC, secondary IC only just does corresponding action when main IC assigns instruction, for example the parameter that scans with correspondence scans contact panel, secondary IC do not obtain main IC instruction during, for example do not obtain scan parameter during, be idle armed state.Because secondary IC scans the parameter that scans of contact panel and is provided by main IC, secondary IC must not write different firmwares in advance and set different analog parameters with correspondence different scan stitching, can use identical firmware, the motion flow of described firmware is controlled by main IC, therefore the secondary IC that scans the contact panel zones of different can exchange each other, also can set the new parameter that scans via main IC once more the subregion of contact panel is scanned according to the result that scans of reality, secondary IC can be by standardization, thereby can reuse, significantly increase application elasticity and the effective utilization of secondary IC.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique under the situation that does not break away from the spirit and scope of the present invention, can also be made various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (18)
1. passive type integrated circuit architecture that is used to scan contact panel is characterized in that comprising:
One master integrated circuit; And
At least one secondary integrated circuit couples a contact panel and described master integrated circuit, in order to scan described contact panel;
Wherein, described at least one secondary integrated circuit parameter that scans of scanning described contact panel is provided by described master integrated circuit.
2. passive type integrated circuit architecture as claimed in claim 1 is characterized in that, the described parameter that scans comprises the stitching that scans, scans pattern and scan analog parameter.
3. passive type integrated circuit architecture as claimed in claim 2 is characterized in that, the described pattern that scans comprises scanning in proper order or specifying and scans.
4. passive type integrated circuit architecture as claimed in claim 2 is characterized in that, the described analog parameter that scans comprises gain, scans time and the accurate position of displacement.
5. passive type integrated circuit architecture as claimed in claim 1 is characterized in that, described at least one secondary integrated circuit describedly is idle armed state during scanning parameter not obtaining.
6. passive type integrated circuit architecture as claimed in claim 1, it is characterized in that, described master integrated circuit receives from the scan data of described at least one secondary integrated circuit and judges, to determine whether to reset the parameter that scans of described at least one secondary integrated circuit, make described at least one secondary integrated circuit scan described contact panel once more.
7. passive type integrated circuit architecture as claimed in claim 6 is characterized in that, the described parameter that scans that resets comprises the subregion that scans described contact panel.
8. passive type integrated circuit architecture as claimed in claim 7 is characterized in that, described subregion comprises the zone that ghost point phenomenon may take place.
9. passive type integrated circuit architecture as claimed in claim 1 is characterized in that, described at least one secondary integrated circuit comprises array capacitance touching control integrated circuit.
10. passive type integrated circuit architecture as claimed in claim 1 is characterized in that, described at least one secondary integrated circuit has identical firmware.
11. passive type integrated circuit architecture as claimed in claim 1 is characterized in that, comprises that more a universal transport interface is connected between described master integrated circuit and the described at least one secondary integrated circuit.
12. passive type integrated circuit architecture as claimed in claim 11 is characterized in that described universal transport interface comprises I
2C or SPI.
13. a control method that is used to scan the passive type integrated circuit architecture of contact panel is characterized in that comprising the following steps:
Mat one master integrated circuit produces an instruction;
Set the parameter that scans that at least one secondary integrated circuit scans a contact panel according to described instruction; And
Described at least one secondary integrated circuit scans described contact panel in response to described instruction with the described parameter that scans.
14. control method as claimed in claim 13 is characterized in that, describedly sets the described step that scans parameter according to described instruction and comprises and set the stitching that scans, scan pattern and scan analog parameter.
15. control method as claimed in claim 13 is characterized in that, more comprises the following steps:
Described at least one secondary integrated circuit is sent to described master integrated circuit with scan data; And
Described master integrated circuit is judged described scan data, whether decision produces one second instruction to reset the parameter that scans of described at least one secondary integrated circuit, makes described at least one secondary integrated circuit scan described contact panel once more according to described second instruction.
16. control method as claimed in claim 15 is characterized in that, the described step that scans described contact panel once more comprises and scans the zone that ghost point phenomenon may take place in the described contact panel.
17. control method as claimed in claim 13 is characterized in that, more comprises through a universal transport interface transmitting described instruction to described at least one secondary integrated circuit.
18. control method as claimed in claim 15 is characterized in that, more comprises through a universal transport interface transmitting described scan data to described master integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910215412.6A CN102109914B (en) | 2009-12-25 | 2009-12-25 | For scanning passive type integrated circuit architecture and the control method thereof of contact panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910215412.6A CN102109914B (en) | 2009-12-25 | 2009-12-25 | For scanning passive type integrated circuit architecture and the control method thereof of contact panel |
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| CN102109914A true CN102109914A (en) | 2011-06-29 |
| CN102109914B CN102109914B (en) | 2016-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156126A (en) * | 2013-05-15 | 2014-11-19 | 源贸科技股份有限公司 | Touch panel with auxiliary judgment function |
| CN104423692A (en) * | 2013-09-10 | 2015-03-18 | 联阳半导体股份有限公司 | Touch control display device |
| WO2020192371A1 (en) * | 2019-03-22 | 2020-10-01 | 敦泰电子有限公司 | Touch screen detection chip combination and terminal device |
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| US20090251427A1 (en) * | 2008-04-02 | 2009-10-08 | Tse-Lun Hung | Power reduction of a capacitive touch system |
| CN101561731A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Capacitance touch control device and control method thereof |
| CN101593065A (en) * | 2008-05-27 | 2009-12-02 | 宸鸿光电科技股份有限公司 | Capacitive touch device and method thereof |
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2009
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090251427A1 (en) * | 2008-04-02 | 2009-10-08 | Tse-Lun Hung | Power reduction of a capacitive touch system |
| CN101561731A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Capacitance touch control device and control method thereof |
| CN101593065A (en) * | 2008-05-27 | 2009-12-02 | 宸鸿光电科技股份有限公司 | Capacitive touch device and method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156126A (en) * | 2013-05-15 | 2014-11-19 | 源贸科技股份有限公司 | Touch panel with auxiliary judgment function |
| CN104423692A (en) * | 2013-09-10 | 2015-03-18 | 联阳半导体股份有限公司 | Touch control display device |
| WO2020192371A1 (en) * | 2019-03-22 | 2020-10-01 | 敦泰电子有限公司 | Touch screen detection chip combination and terminal device |
| US11789562B2 (en) | 2019-03-22 | 2023-10-17 | Focaltech Electronics, Ltd. | Touch screen detection chip combination and terminal device |
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| Publication number | Publication date |
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| CN102109914B (en) | 2016-03-30 |
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