CN102314245A - Coding-type touch sensing device and method - Google Patents
Coding-type touch sensing device and method Download PDFInfo
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- CN102314245A CN102314245A CN2010102160064A CN201010216006A CN102314245A CN 102314245 A CN102314245 A CN 102314245A CN 2010102160064 A CN2010102160064 A CN 2010102160064A CN 201010216006 A CN201010216006 A CN 201010216006A CN 102314245 A CN102314245 A CN 102314245A
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Abstract
The invention discloses a coding-type touch sensing device and a method. The coding-type touch sensing device is characterized by comprising a touch panel and the touch sensing device of plural sensors, wherein the touch panel is provided with plural touch zones; each touch zone comprises at least one sensing line; the sensing lines in one touch zone and sensing lines of which the positions are not mutually corresponded in the other touch zone are mutually coupled to one of the sensors; and at least one touch position on the touch panel is determined by scanning, decoding and filtering.
Description
Technical field
The invention relates to the contact panel detection technology, be meant a kind of touch-control sensing technology especially, be applicable to the contact panel of various sizes with a minority many sense wire panel of sensor realization.
Background technology
The touch-control sensing technology is through the physical parameter variation between the finger (comprising other various sharp shaped materials) of sensing element and its top; Judge sense wire (Trace) position and the action thereof that finger belongs to via logical calculated, mainly can be divided into resistance-type, condenser type and optical profile type three major types.The electric resistance touch-control sensing is simple and with low cost because of circuit, and is the main flow of present small size touch-control commodity market; But its color degree of appearing and sense of touch sensitivity still fail to satisfy consumer's requirement.The capacitance touching control sensing even must not touch the surface of sensing element because of having high sensitivity and property is driven in high control, and becomes the research and development emphasis of the tool potentiality of small size touch-control commodity gradually.For the large touch detection technology; Development at present is main with the optical touch control sensing, but its resolution and correlation technique are not attained maturation yet, and contact panel is bigger usually; Needed sense wire quantity the more, then infrared receives that right quantity increases and circuit structure is tending towards complicated.In addition, for the contact panel of tool two dimension coordinate, not on the same group sense wire of its X axle and Y axle need be provided, the side is enough to judge the two-dimentional coordinate position of finger, and needed sense wire quantity increases, and circuit cost is increased accordingly.
Summary of the invention
For solving the disappearance of the above known techniques, a purpose of the present invention provides a kind of touch-control sensing technology, and sensor that can small number is realized the touch-control sensing of many sense wire panels, and is applicable to the contact panel of various sizes.
Another object of the present invention is the mode with touch-control sensing trace group coding, makes the detection technology that only is applicable to small size touch-control commodity originally, can be applied to the exploitation of large-size contact panel.
For reaching above-mentioned purpose; Disclose a kind of touch sensing device in one aspect of the invention; It comprises a plurality of first sensors and a contact panel; This contact panel has a plurality of first Touch Zones, has more at least one the first sense wires in each first Touch Zone, the position in first sense wire in one first Touch Zone wherein and another first Touch Zone each other the first corresponding sense wire be on one first sensor that is coupled to jointly wherein.Preferable, this touch sensing device more comprises: the one scan unit, scan these a plurality of first sensors to obtain a touch-control sensing signal; One decoding unit, this touch-control sensing signal of decoding is to obtain a decoding signal; One filter unit carries out a filter to this touch-control sensing signal, to obtain a filtering sensing signal; And a location resolution unit, it is according at least one position of touch on this this contact panel of filtering sensing signal decision.
Disclose a kind of touch-control sensing control method in another aspect of this invention; Comprise the following steps: to provide a touch sensing device; Include a plurality of sensors and a contact panel; This contact panel is to have a plurality of Touch Zones, more comprises at least one sense wire in each Touch Zone, and the sense wire in the Touch Zone wherein is on the sensor that is coupled to jointly wherein with the not mutual corresponding sense wire in the position in another Touch Zone; Scan these a plurality of touch control sensors to obtain a touch-control sensing signal; This touch-control sensing signal of decoding is to obtain a decoding signal; And according at least one position of touch on this this contact panel of decoding sensing signal decision.
Description of drawings
Fig. 1 is the synoptic diagram according to first embodiment of coding type touch sensing device of the present invention;
Fig. 2 is the touch panel structure provided synoptic diagram of two-dimentional coordinate according to second embodiment of the invention;
Fig. 3 is the large touch panel structural representation according to third embodiment of the invention;
Fig. 4 is according to coding type touch-control sensing control method process flow diagram of the present invention.
Description of reference numerals:
The 20-contact panel; The 21a/b-Touch Zone; The 22-scanning element; The 23-decoding unit; The 24-filter unit; The 25-location resolution unit; The 26-sensor; The 40-contact panel; The 41a/b-Touch Zone; The 60-contact panel; The 61a/b/e-Touch Zone.
Embodiment
For enabling that characteristic of the present invention, purpose and function are had further cognition and understanding, cooperate graphic detailed description now as back:
Please with reference to Fig. 1, be the synoptic diagram of first embodiment of coding type touch sensing device according to the present invention.As shown in the figure; The coding type touch sensing device of present embodiment mainly is made up of a contact panel 20 and 20 sensors; These sensors are numbered S1-S20 from left to right according to sequence of positions; And two Touch Zone 21a/b about this contact panel 20 is divided into, wherein Touch Zone 21a has 20 sense wires along arrangement of X axle and parallel Y axle, and its code is T101-T120 according to sequence of positions from left to right; And Touch Zone 21b has 20 sense wires along arrangement of X axle and parallel Y axle, and order then was T201-T220 about its code was complied with.The not corresponding each other sense wire of the sequence of positions of each Touch Zone is coupled to a sensor wherein jointly; Actual arrangement mode is coupled to the sense wire of each identical new numbering the sensor of corresponding numbering again for respectively these sense wires of different Touch Zones being renumberd with the different preset coding.With regard to present embodiment; Please with reference to table one; For the code of each Touch Zone 21a/b sense wire, according to Position Number, according to the contrast synoptic diagram of coding numbering, Touch Zone 21a sense wire preset is encoded to whenever the loop coding mode at a distance from three, and the coding of Touch Zone 21b sense wire then is same as its Position Number; The sense wire of the identical numbering in coding back is coupled to the sensor S1-S20 of corresponding numbering, and please with reference to table two, sense wire T101/T201 is coupled to sensor S1, and T104/T202 is coupled to S2, and T107/T203 is coupled to S3 ..., T118/T220 is coupled to S20.The touch sensing device of present embodiment more comprises one scan unit 22, scans these sensors S1-S20 in regular turn, and obtains a touch-control sensing signal; One decoding unit 23 according to the preset coding of each Touch Zone, is decoded to this touch-control sensing signal, to be reduced into the sensing signal of the original position order before coding; Through a filter unit 24, this decoding signal is carried out a filter again, filtering is because of the high frequency noise of the signal disturbance that coding/decoding caused, to obtain a filtering sensing signal; Wherein this filter is to be the design of a matched filter (Matched filter), possibly influence the noise that finger position is judged to lower; Present embodiment adopts the average calculating operation method to realize this matched filtering program, but is not limited in the method.And in the judgement for finger position, this touch sensing device can add a location resolution unit 25, to point at least one position of touch on this contact panel according to this filtered sensing signal decision.But have an advantage at least by knowledge capital invention in the explanation of the foregoing description, can reduce the required quantity of sensor; According to present embodiment, script needs 40 sensors, but the design of process notion of the present invention only needs 20 sensors and can reach identical effect, and reduces manufacturing cost.Present embodiment is to be example with sense wire quantity identical in each Touch Zone, but its sense wire quantity of implementing to go up in each Touch Zone must be not identical.
For the contact panel of tool two dimension coordinate, desire is judged the coordinate position of finger, and not on the same group sense wire of its X axle and Y axle then need be provided, can also notion enforcement of the present invention.Please, be touch panel structure provided synoptic diagram according to second embodiment of the invention with reference to Fig. 2.As shown in the figure; Present embodiment mainly is made up of a contact panel 40 and 20 sensors; These sensors are numbered S1-S20 from left to right according to sequence of positions; And this contact panel 40 is divided into two Touch Zone 41a/b of X/Y axle according to axes of coordinates, and wherein X axle Touch Zone 41a has 20 sense wires along arrangement of X axle and parallel Y axle, and its code is TX01-TX20 according to sequence of positions from left to right; And Y axle Touch Zone 41b has six sense wires along arrangement of Y axle and paralleled by X axis, and order then was TY01-TY06 about its code was complied with.The not corresponding each other sense wire of the sequence of positions of each Touch Zone is coupled to a sensor wherein jointly; Actual arrangement mode is coupled to the sense wire of each identical new numbering the sensor of corresponding numbering again for respectively these sense wires of different Touch Zones being renumberd with the different preset coding.With regard to present embodiment; Please with reference to table three; For the code of each Touch Zone 41a/b sense wire, according to Position Number, according to the contrast synoptic diagram of encoding and numbering; X axle Touch Zone 41a sense wire preset is encoded to whenever the loop coding mode at a distance from three, and Y axle Touch Zone 41b sense wire is then encoded according to Position Number; The sense wire of the identical numbering in coding back is coupled to the sensor S1-S20 of corresponding numbering, and sense wire TX01/TY01 is coupled to sensor S1, and TX04/TY02 is coupled to S2; ..., TX16/TY06 is coupled to S6, and TX19 is coupled to S7 separately; ..., TY18 is coupled to S20 separately.The unit such as the scanning of other parts of present embodiment, decoding, filtering or location resolution and first embodiment are roughly the same; See also the relevant narration of Fig. 1 and circuit operation; Realize the judgement of two-dimentional contact panel finger position coordinate, required sensor quantity also relatively is reduced to 20 by 26; And extending above-mentioned enforcement notion, the X of contact panel or Y axle also can be divided into more than one Touch Zone separately, can further reduce the required quantity of sensor.In addition, do not limit must be identical for the sense wire quantity in the Touch Zone that the X or the Y axle of contact panel is divided into.
Another aspect of the present invention is applicable to the sensing of realizing large touch panel with the sensor of smallest number; Below will with one have 101 sense wires one dimension (X axle) contact panel be example; Please, be touch panel structure provided synoptic diagram according to third embodiment of the invention with reference to Fig. 3.The coding type touch sensing device of present embodiment mainly is made up of a contact panel 60 and 21 sensors; These sensors are numbered S1-S21 from left to right according to sequence of positions; And this contact panel 60 is divided into five Touch Zone 61a/b/c/d/e from left to right; Wherein Touch Zone 61a has 20 sense wires along arrangement of X axle and parallel Y axle, and its code is T101-T120 according to sequence of positions from left to right, and Touch Zone 61b has 20 sense wires along arrangement of X axle and parallel Y axle; Order then was T201-T220 about its code was complied with; Touch Zone 61c/d is not shown among the figure, and Touch Zone 61e has the sense wire of twenty-one provision along arrangement of X axle and parallel Y axle, and order then was T501-T521 about its code was complied with; The not corresponding each other sense wire of the sequence of positions of each Touch Zone is coupled to a sensor wherein jointly; Actual arrangement mode is coupled to the sense wire of each identical new numbering the sensor of corresponding numbering again for respectively these sense wires of different Touch Zones being renumberd with the different preset coding.With regard to present embodiment; Please with reference to table four; For the code of each Touch Zone 61a/b/e sense wire, according to Position Number, according to the contrast synoptic diagram of encoding and numbering; Touch Zone 61a sense wire preset is encoded to every at a distance from three loop coding mode, and Touch Zone 61b sense wire preset is encoded to every at a distance from seven loop coding mode, and Touch Zone 61e sense wire is then encoded according to Position Number; The sense wire of the identical numbering in coding back is coupled to the sensor S1-S21 of corresponding numbering; Sense wire T101/T201/T501 is coupled to sensor S1, and T104/T208/T502 is coupled to S2 ...; T118/T214/T520 is coupled to S20, and T521 is coupled to S21 separately.The unit such as the scanning of other parts of present embodiment, decoding, filtering or location resolution and first embodiment are roughly the same; See also the relevant narration of Fig. 1 and circuit operation; Required sensor quantity also relatively is reduced to by 101 need only 21, and circuit structure also so relatively simple can be known present embodiment by inference and be applicable to designing and developing of large touch panel; Especially script such as condenser type only is suitable for the technology of small size panel, can therefore be applied to large touch panel.
The present invention also discloses a kind of touch-control sensing control method; Please with reference to the coding type touch sensing device embodiment synoptic diagram of Fig. 1 and the implementing procedure figure of Fig. 4; It comprises the following steps: step 801 provide one comprise a contact panel and a plurality of sensors touch sensing device; This contact panel has a plurality of Touch Zones 21; More comprise at least one sense wire in each Touch Zone; Sense wire in the Touch Zone wherein is on the sensor 26 that is coupled to jointly wherein with the not mutual corresponding sense wire in the position in another Touch Zone, and actual arrangement mode is coupled to the sense wire of each identical new numbering the sensor of corresponding numbering again for respectively these sense wires of different Touch Zones being renumberd with the different preset coding.These a plurality of touch control sensors of step 802 scanning are to obtain a touch-control sensing signal.Step 803 is decoded to this touch-control sensing signal according to the preset coding of each Touch Zone, to be reduced into the sensing signal of the original position order before coding.In a preferred embodiment, can after step 803, add a step 804: this decoding signal is carried out a filter, and filtering is because of the high frequency noise of the signal disturbance that coding/decoding caused, to obtain a filtering sensing signal; Wherein this filter is to be the design of a matched filtering, possibly influence the noise that finger position is judged to lower; Present embodiment adopts the average calculating operation method to realize this matched filtering program, but is not limited to the method; This filter can also be provided with polyphone and be connected to step 803 other steps afterwards, limits to be directly connected in after the step 803, and its fundamental purpose is touched the correctness of empty position for promoting computing.Step 805 item is according at least one position of touch on this this contact panel of filtering sensing signal decision.
Above-mentioned method also is applicable to the finger block cursor position judgement of two-dimentional contact panel; Please with reference to Fig. 2; Contact panel 40 can be distinguished into not on the same group Touch Zone and included sense wire thereof according to X-direction; Also can be distinguished into not on the same group Touch Zone and included sense wire thereof according to Y direction, above-mentioned two types of sense wires are orthogonal, and the position in the sense wire in each Touch Zone and another Touch Zone each other corresponding sense wire be on the sensor that is coupled to jointly wherein.
The above is merely preferred embodiment of the present invention, when can not with restriction scope of the present invention.The equalization of promptly doing according to claim of the present invention generally changes and modifies, and will not lose main idea of the present invention place, does not also break away from the spirit and scope of the present invention, and the former capital should be regarded as further enforcement situation of the present invention.
Claims (12)
1. a touch sensing device is characterized in that, comprising:
A plurality of first sensors; And
One contact panel; It is to have a plurality of first Touch Zones; Have more at least one the first sense wires in each first Touch Zone, the position in first sense wire in one first Touch Zone wherein and another first Touch Zone each other the first corresponding sense wire be on one first sensor that is coupled to jointly wherein.
2. touch sensing device according to claim 1 is characterized in that, more comprises:
The one scan unit scans these a plurality of first sensors to obtain a touch-control sensing signal; And
One decoding unit, this touch-control sensing signal of decoding is to obtain a decoding signal.
3. touch sensing device according to claim 1; It is characterized in that; More comprise a plurality of second sensors; Wherein this contact panel has more a plurality of second Touch Zones, have more in each second Touch Zone at least one with second sense wire of this first sense wire quadrature, second sense wire one second Touch Zone wherein in is on one second sensor that is coupled to jointly wherein with the mutual second corresponding sense wire in the position in another second Touch Zone.
4. touch sensing device according to claim 3 is characterized in that, more comprises:
The one scan unit scans these a plurality of first sensors and this second sensor to obtain a touch-control sensing signal; And
One decoding unit, this touch-control sensing signal of decoding is to obtain a decoding signal.
5. according to claim 2 or 4 described touch sensing devices, it is characterized in that, more comprise a filter unit, this decoding signal is carried out a filter, to obtain a filtering sensing signal.
6. according to claim 2 or 4 described touch sensing devices, it is characterized in that, more comprise a location resolution unit, it is according at least one position of touch on this this contact panel of decoding signal decision.
7. touch sensing device according to claim 1 is characterized in that, the first sense wire quantity in this each first Touch Zone is incomplete same.
8. touch sensing device according to claim 4 is characterized in that, the second sense wire quantity in this each second Touch Zone is incomplete same.
9. a touch-control sensing control method is characterized in that, comprises the following steps:
One touch sensing device is provided; Include a plurality of sensors and a contact panel; This contact panel is to have a plurality of Touch Zones; More comprise at least one sense wire in each Touch Zone, the sense wire in the Touch Zone wherein is on the sensor that is coupled to jointly wherein with the not mutual corresponding sense wire in the position in another Touch Zone;
Scan these a plurality of touch control sensors to obtain a touch-control sensing signal;
This touch-control sensing signal of decoding is to obtain a decoding signal; And
According at least one position of touch on this this contact panel of decoding signal decision.
10. touch-control sensing control method according to claim 8; It is characterized in that; These a plurality of sensors more comprise a plurality of first sensors and a plurality of second sensor; This Touch Zone has more a plurality of first Touch Zones and a plurality of second Touch Zone; First sense wire in one first Touch Zone wherein is on one first sensor that is coupled to jointly wherein with the not mutual first corresponding sense wire in the position in another first Touch Zone; Have more in each second Touch Zone at least one with second sense wire of this first sense wire quadrature, second sense wire one second Touch Zone wherein in is on one second sensor that is coupled to jointly wherein with the mutual second corresponding sense wire in the position in another second Touch Zone.
11. touch-control sensing control method according to claim 8 is characterized in that, the decoding this touch-control sensing signal, with obtain one the decoding signal after, more comprise a step: this decoding signal is carried out a filter, to obtain a filtering sensing signal.
12. touch-control sensing control method according to claim 11 is characterized in that, this filter is to be the computing of a matched filtering.
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| CN2010102160064A CN102314245A (en) | 2010-07-02 | 2010-07-02 | Coding-type touch sensing device and method |
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| CN2010102160064A CN102314245A (en) | 2010-07-02 | 2010-07-02 | Coding-type touch sensing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932741A (en) * | 2015-06-02 | 2015-09-23 | 武汉华星光电技术有限公司 | Scan method of touch signal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477562U (en) * | 2009-07-30 | 2010-05-19 | 晶宏半导体股份有限公司 | Resistance-type touch panel |
| CN101719040A (en) * | 2010-01-14 | 2010-06-02 | 友达光电股份有限公司 | Testing apparatus of touch panel |
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- 2010-07-02 CN CN2010102160064A patent/CN102314245A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477562U (en) * | 2009-07-30 | 2010-05-19 | 晶宏半导体股份有限公司 | Resistance-type touch panel |
| CN101719040A (en) * | 2010-01-14 | 2010-06-02 | 友达光电股份有限公司 | Testing apparatus of touch panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932741A (en) * | 2015-06-02 | 2015-09-23 | 武汉华星光电技术有限公司 | Scan method of touch signal |
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Application publication date: 20120111 |