CN202153349U - Positioning device and touch control system used for capacitance touch screen - Google Patents
Positioning device and touch control system used for capacitance touch screen Download PDFInfo
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- CN202153349U CN202153349U CN2011202019201U CN201120201920U CN202153349U CN 202153349 U CN202153349 U CN 202153349U CN 2011202019201 U CN2011202019201 U CN 2011202019201U CN 201120201920 U CN201120201920 U CN 201120201920U CN 202153349 U CN202153349 U CN 202153349U
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Abstract
The utility model discloses a positioning device used for a capacitance touch screen, which comprises a detecting module which is used for detecting mutual capacitance variable quantity on the capacitance touch screen, a judging module which is used for receiving the mutual capacitance variable quantity detected by the detecting module, and judging whether an object approaches or touches the capacitance touch screen according to the mutual capacitance variable quantity, a calculating module which is used for calculating an approaching area and/or a touching coordinate, and a controlling module which is used for carrying on image amplification on icons in the approaching area when the judging module judges the object approaches the capacitance touch screen, and the calculating module sends the approaching area to the controlling module. The utility module also discloses a touch control system with the positioning device. The utility model can solve the erroneous judgment on touch point coordinates when the object touches a plurality of icons, so that the positioning accuracy of the touch pint coordinates can be improved.
Description
Technical field
The utility model relates to the touch technology field, particularly relates to a kind of locating device that is used for capacitance touch screen, has the touch-control system of above-mentioned locating device.
Background technology
Touch-screen utilizes the characteristics that its mechanical loss is little and volume is little, has been widely used on each electronic product.Touch-screen comprises electric resistance touch screen and capacitance touch screen.The demand of multiple point touching makes the favor that more and more receives product designer based on the theoretical touch product of mutual capacitance.
Though traditional capacitance touch screen can be realized multiple point touching, there is the low problem of precision that touches.This is because the icon sizes of display screen is limited, and object (for example finger) is easy to touch simultaneously several icons, and locating device can't be discerned correct position, thereby causes mistake to touch, and therefore can bring very big inconvenience to the user.
The utility model content
The purpose of the utility model is intended to solve at least one of above-mentioned technological deficiency.
For this reason, first purpose of the utility model is to provide a kind of locating device that is used for capacitance touch screen, and this device can solve object and touch the erroneous judgement of a plurality of icons to the touch point coordinate simultaneously, has improved the bearing accuracy to the touch point coordinate.
Second purpose of the utility model is to provide a kind of touch-control system.
For realizing above-mentioned purpose, the embodiment of the utility model first aspect has proposed a kind of locating device that is used for capacitance touch screen, comprising: detection module, said detection module are used to detect the mutual capacitance value variable quantity on the capacitance touch screen; Judge module, said judge module links to each other with said detection module, and said judge module receives the detected said mutual capacitance value variable quantity of said detection module, and has judged whether that according to said mutual capacitance value variable quantity object closes on or touches said capacitance touch screen; Computing module, said computing module links to each other with said judge module with said detection module, and said computing module calculates the close region and/or the touch coordinate of said object; Control module; Said control module links to each other with said computing module with said judge module; When said judge module judgement has object to close on said capacitance touch screen; Said computing module is sent to said control module with said close region, and said control module is carried out image to the icon in the said close region and amplified.
The locating device that is used for capacitance touch screen according to the utility model embodiment; Can discern the coordinate that closes on of the object that closes on touch-screen; And then corresponding icon is amplified in control; Solved object and touched of the erroneous judgement of a plurality of icons simultaneously, improved bearing accuracy the touch point coordinate to the touch point coordinate.
The embodiment of the utility model second aspect has proposed a kind of touch-control system, and said touch-control system comprises the locating device that is used for capacitance touch screen that touch-screen and the utility model first aspect embodiment provide.
Touch-control system according to the utility model embodiment; Can discern the coordinate that closes on of the object that closes on touch-screen through locating device; And then the corresponding icon of control amplification, solved object and touched of the erroneous judgement of a plurality of icons simultaneously the touch point coordinate, improved bearing accuracy to the touch point coordinate.
Aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize through the practice of the utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the process flow diagram that is used for the localization method of capacitance touch screen;
The synoptic diagram that the mutual capacitance value changed when Fig. 2 closed on capacitance plate and touches capacitance plate for object;
Fig. 3 (a) closes on the synoptic diagram of capacitance plate for object;
Fig. 3 (b) touches the synoptic diagram of capacitance plate for object;
Fig. 4 is for changing the process flow diagram that object is positioned according to the mutual capacitance value; With
Fig. 5 is the synoptic diagram according to the locating device that is used for capacitance touch screen of the utility model embodiment.
Embodiment
Describe the embodiment of the utility model below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the utility model, and can not be interpreted as restriction the utility model.
Referring to figs. 1 to Fig. 4 the localization method that is used for capacitance touch screen is described below.Wherein, said capacitance touch screen can be applied to multiple treatment facility, for example mobile phone, panel computer, keyboard, PDAs (Personal Digital Assistant System, personal digital assistant system) etc.
As shown in Figure 1, be used for the localization method of capacitance touch screen, comprise the steps:
S1: detect the mutual capacitance value variable quantity on the capacitance touch screen.
Object (for example finger) closes on or during the hand capacity touch-screen, and the mutual capacitance value of the adjacent domain of contact point and the contact point of object on capacitance touch screen will change.
Detect the mutual capacitance value variable quantity on the capacitance touch screen, said mutual capacitance value variable quantity is converted into digital signal and is sent to host computer.For example, host computer can be personal computer (Personal Computer), perhaps CPU (Central Processing Unit, central processing unit), DSP control devices such as (Digital Signal Processor, digital signal processors).
S2: judged whether that according to mutual capacitance value variable quantity object closes on capacitance touch screen or touches capacitance touch screen.
Host computer has judged whether that according to the digital signal of the sign mutual capacitance value variable quantity that receives object closes on capacitance touch screen or touches capacitance touch screen.
Particularly, host computer parses mutual capacitance value variable quantity according to the digital signal that receives.As shown in Figure 2, when host computer judged that mutual capacitance value variable quantity is between the first capacitance threshold value C1 and the second capacitance threshold value C2, judging had object to close on capacitance touch screen, shown in Fig. 3 (a).In an embodiment of the utility model, the host computer setting closes on function APPRO [i], when mutual capacitance value variable quantity meets when closing on function APPRO [i], can judge that then mutual capacitance value variable quantity is between the first capacitance threshold value C1 and the second capacitance threshold value C2.When object A closes on said capacitance touch screen, execution in step S2.
Judge the process that has object to close on capacitance touch screen for clearer explanation, provide the function text description of closing on function APPRO [i] below.
If the threshold value of the capacitance change when touching is FTHD [i], hysteresis is hys, when capacitance change during greater than FTHD [i]-hys and less than FTHD [i]+hys, has explained that object closes on capacitance touch screen.Wherein, FTHD [i]-hys is the first capacitance threshold value C1, and FTHD [i]+hys is the second capacitance threshold value C2.
When host computer was judged mutual capacitance value variable quantity more than or equal to the second capacitance threshold value C2, then the section of declaring had object to touch capacitance touch screen, shown in Fig. 3 (b).In an embodiment of the utility model, host computer is provided with and touches function T OUCH [j], when mutual capacitance value variable quantity meets touch function T OUCH [j], can judge that then mutual capacitance value variable quantity is more than or equal to the second capacitance threshold value C2.When object A touches said capacitance touch screen, execution in step S3.
Judge the process that has object to touch capacitance touch screen for clearer explanation, provide the function text description that touches function T OUCH [j] below.
If the capacitance change threshold value when touching is FTHD [i], FTHD [i] represents capacitance change.Hysteresis is hys, when capacitance change during more than or equal to FTHD [i]+hys, has explained that object touches capacitance touch screen.Wherein, FTHD [i]+hys is the second capacitance threshold value C2.
In an embodiment of the utility model, the first capacitance threshold value C1, the second capacitance threshold value C2, close on function APPRO [i] and touch function T OUCH [j] by the host computer setting.
In an embodiment of the utility model, when mutual capacitance value variable quantity during less than the first capacitance threshold value C1, host computer is not carried out action.
S3: the close region of computing object on capacitance touch screen, carry out image to the icon in the said close region and amplify.
As shown in Figure 4, when having object, judgement closes on capacitance touch screen, execution in step S31 at first, the close region of computing object on capacitance touch screen.
In an embodiment of the utility model, the close region of computing object on capacitance touch screen comprises the steps:
When judgement has object to close on capacitance touch screen, computing object close on coordinate.Particularly; In an embodiment of the utility model; The mode that computing object is closed on coordinate is basic identical with the mode of computing object touch coordinate at present; Different is to close on coordinate for computing object, and the sensitivity of touch-screen is higher, and promptly the first capacitance threshold value C1 is less than the second capacitance threshold value C2.
According to the said close region of the said object of coordinate Calculation on said capacitance touch screen that close on.In an example of the utility model, close region is with the said zone of closing in the predetermined radii that coordinate is the center of circle.Wherein, predetermined radii can pass through the host computer setting.
Execution in step S32 then, host computer carry out according to detected close region and close on operation.In an embodiment of the utility model, host computer is carried out to close on to operate and is comprised that the icon in the said close region is carried out image to be amplified.Amplify through the icon in the close region being carried out image, avoid, improved bearing accuracy the coordinate of the contact point of object and capacitance touch screen owing to object is run into the erroneous judgement problem that a plurality of icons cause simultaneously.Repeated execution of steps S2 and step S3 touch capacitance touch screen until judging by object.In other words, before judgment object touch capacitance touch screen, constantly the icon to close region carries out the image amplification, and the icon of progressively rejecting interference is with the actual icon that will touch of acquisition object, thereby the touch point position of object can more easily be obtained.
S4: when judgement has object to touch said capacitance touch screen, the touch coordinate of computing object.
As shown in Figure 4, when judgement has object to touch capacitance touch screen, execution in step S41, the touch coordinate of computing object on capacitance touch screen, thus realize object corresponding touch coordinate on capacitance touch screen is located.
Obtaining object behind touch coordinate corresponding on the capacitance touch screen, said touch coordinate is sent to the controller that links to each other with capacitance touch screen, and, carries out the control action of the corresponding object appointment of said touch coordinate by controller execution in step S42.In other words, controller detects the icon corresponding with said touch coordinate, and owing to the icon on the capacitance touch screen moves corresponding to Different control, thereby the control action of object appointment can known and carry out to controller.For example:, then show corresponding picture when controller detects by the icon of said touch coordinate location correspondingly with picture display function constantly.
The localization method that is used for capacitance touch screen can be discerned the coordinate that closes on of the object that closes on touch-screen, and then control amplifies corresponding icon, has solved object and has touched the erroneous judgement of a plurality of icons to the touch point coordinate simultaneously, has improved the bearing accuracy to the touch point coordinate.
The locating device of describing according to the utility model embodiment with reference to figure 5 below that is used for capacitance touch screen 500.
As shown in Figure 5, comprise detection module 510, judge module 520, computing module 530 and control module 540 according to the locating device that is used for capacitance touch screen 500 of the utility model embodiment.Wherein, judge module 520 links to each other with detection module 510, and computing module 530 links to each other with judge module 520 with detection module 510 respectively, and control module 540 links to each other with computing module 530 with judge module 520 respectively.
The said locating device 500 that is used for capacitance touch screen can be host computer.For example, host computer can be personal computer (Personal Computer), perhaps CPU (Central Processing Unit, central processing unit), DSP control devices such as (Digital Signal Processor, digital signal processors).
The mutual capacitance value variable quantity that detection module 510 detects on the capacitance touch screen is converted into said mutual capacitance value variable quantity digital signal and is sent to judge module 520.
Particularly, judge module 520 parses mutual capacitance value variable quantity according to the digital signal that receives.Shown in Fig. 2 and Fig. 3 (a), when judge module 520 judged that mutual capacitance value variable quantity is between the first capacitance threshold value C1 and the second capacitance threshold value C2, judging had object to close on capacitance touch screen, and closed on the judgement signal to computing module 530 transmissions.In an embodiment of the utility model; Judge module 520 is provided with and closes on function APPRO [i]; When mutual capacitance value variable quantity meets when closing on function APPRO [i], can judge that then mutual capacitance value variable quantity is between the first capacitance threshold value C1 and the second capacitance threshold value C2.
Shown in Fig. 2 and Fig. 3 (b), when judge module 520 was judged mutual capacitance value variable quantity more than or equal to the second capacitance threshold value C2, then the section of declaring had object to touch capacitance touch screen, and refrigerator computing module 530 sends to touch judges signal.
In an embodiment of the utility model, judge module 520 is provided with and touches function T OUCH [j], when mutual capacitance value variable quantity meets touch function T OUCH [j], can judge that then mutual capacitance value variable quantity is more than or equal to the second capacitance threshold value C2.
In an embodiment of the utility model, the locating device that is used for capacitance touch screen 500 of the utility model embodiment also comprises memory module 550, is used to preserve the first capacitance threshold value C1 and the second capacitance threshold value C2.Wherein, judge module 520 links to each other with memory module 550.
In an embodiment of the utility model, when judge module 520 is judged mutual capacitance value variable quantity less than the first capacitance threshold value C1, do not carry out action.
As shown in Figure 4, judge have object to close on capacitance touch screen when judge module 520, said computing module 530 closes on judgement signal, the close region of computing object on capacitance touch screen according to what receive.
In an embodiment of the utility model, the close region of computing module 530 computing object on capacitance touch screen comprises the steps:
Computing module 530 computing object close on coordinate; Particularly; In an embodiment of the utility model, the mode that computing module 530 computing object are closed on coordinate is basic identical with the mode of computing object touch coordinate at present, and different is to close on coordinate for computing object; The sensitivity of touch-screen is higher, and promptly the first capacitance threshold value C1 is less than the second capacitance threshold value C2.
Computing module 530 is according to the said close region of the said object of coordinate Calculation on said capacitance touch screen that close on.In an example of the utility model, close region is with the said zone of closing in the predetermined radii that coordinate is the center of circle.Wherein, predetermined radii can pass through the host computer setting.
As shown in Figure 4, computing module 530 is judged the touch coordinate of calculated signals object on capacitance touch screen according to touching, thereby realizes object corresponding touch coordinate on capacitance touch screen is located.
Obtaining object behind touch coordinate corresponding on the capacitance touch screen, computing module 530 is sent to the controller that links to each other with capacitance touch screen with said touch coordinate, and carries out the control action of the corresponding object appointment of said touch coordinate by controller.In other words, controller detects the icon corresponding with said touch coordinate, and owing to the icon on the capacitance touch screen moves corresponding to Different control, thereby the control action of object appointment can known and carry out to controller.For example:, then show corresponding picture when controller detects by the icon of said touch coordinate location correspondingly with picture display function constantly.
The locating device that is used for capacitance touch screen according to the utility model embodiment; Can discern the coordinate that closes on of the object that closes on touch-screen; And then corresponding icon is amplified in control; Solved object and touched of the erroneous judgement of a plurality of icons simultaneously, improved bearing accuracy the touch point coordinate to the touch point coordinate.
The utility model embodiment also provides a kind of touch-control system, comprises capacitance touch screen and locating device.Wherein, the locating device locating device that is used for capacitance touch screen that can provide for the utility model the foregoing description.Can discern the coordinate that closes on of the object that closes on touch-screen through said locating device, and then control amplifies corresponding icon, solved object and touched of the erroneous judgement of a plurality of icons simultaneously, improved bearing accuracy the touch point coordinate to the touch point coordinate.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model; For those of ordinary skill in the art; Be appreciated that under the situation of principle that does not break away from the utility model and spirit and can carry out multiple variation, modification, replacement and modification that the scope of the utility model is accompanying claims and be equal to and limit to these embodiment.
Claims (4)
1. a locating device that is used for capacitance touch screen is characterized in that, comprising:
Detection module, said detection module are used to detect the mutual capacitance value variable quantity on the capacitance touch screen;
Judge module, said judge module links to each other with said detection module, and said judge module receives the detected said mutual capacitance value variable quantity of said detection module, and has judged whether that according to said mutual capacitance value variable quantity object closes on or touches said capacitance touch screen;
Computing module, said computing module links to each other with said judge module with said detection module, and said computing module calculates the close region and/or the touch coordinate of said object; With
Control module; Said control module links to each other with said computing module with said judge module; When said judge module judgement has object to close on said capacitance touch screen; Said computing module is sent to said control module with said close region, and said control module is carried out image to the icon in the said close region and amplified.
2. locating device as claimed in claim 1 is characterized in that, also comprises:
Memory module; Said memory module is preserved first capacitance threshold value and second capacitance threshold value; Said judge module links to each other with said memory module, and when said mutual capacitance value variable quantity was between first capacitance threshold value and second capacitance threshold value, then said judge module is judged had object to close on said capacitance touch screen; When detecting said mutual capacitance value variable quantity more than or equal to said second capacitance threshold value, then said judge module is judged has object to touch said capacitance touch screen.
3. locating device as claimed in claim 1 is characterized in that, the said locating device that is used for capacitance touch screen is a host computer.
4. a touch-control system is characterized in that, comprising:
Touch-screen; With
According to each described locating device that is used for capacitance touch screen among the claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202019201U CN202153349U (en) | 2011-06-15 | 2011-06-15 | Positioning device and touch control system used for capacitance touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202019201U CN202153349U (en) | 2011-06-15 | 2011-06-15 | Positioning device and touch control system used for capacitance touch screen |
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| Publication Number | Publication Date |
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| CN202153349U true CN202153349U (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202019201U Expired - Lifetime CN202153349U (en) | 2011-06-15 | 2011-06-15 | Positioning device and touch control system used for capacitance touch screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830862A (en) * | 2011-06-15 | 2012-12-19 | 比亚迪股份有限公司 | Positioning method used for capacitive touch screen, positioning device, and touch system |
| CN110134281A (en) * | 2019-05-16 | 2019-08-16 | 上海艾为电子技术股份有限公司 | Capacitive detection system and method |
| CN113049894A (en) * | 2020-12-15 | 2021-06-29 | 苏州伟之佳光电科技有限公司 | Function detection method of touch screen |
-
2011
- 2011-06-15 CN CN2011202019201U patent/CN202153349U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830862A (en) * | 2011-06-15 | 2012-12-19 | 比亚迪股份有限公司 | Positioning method used for capacitive touch screen, positioning device, and touch system |
| CN110134281A (en) * | 2019-05-16 | 2019-08-16 | 上海艾为电子技术股份有限公司 | Capacitive detection system and method |
| CN110134281B (en) * | 2019-05-16 | 2022-09-16 | 上海艾为电子技术股份有限公司 | Capacitance detection system and method |
| CN113049894A (en) * | 2020-12-15 | 2021-06-29 | 苏州伟之佳光电科技有限公司 | Function detection method of touch screen |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200114 Address after: 518119 1 Yanan Road, Kwai Chung street, Dapeng New District, Shenzhen, Guangdong Patentee after: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. Address before: BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Patentee before: BYD Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: BYD Semiconductor Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120229 |
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| CX01 | Expiry of patent term |