CN102455811A - Method and device for detecting touch device - Google Patents
Method and device for detecting touch device Download PDFInfo
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- CN102455811A CN102455811A CN2010105252509A CN201010525250A CN102455811A CN 102455811 A CN102455811 A CN 102455811A CN 2010105252509 A CN2010105252509 A CN 2010105252509A CN 201010525250 A CN201010525250 A CN 201010525250A CN 102455811 A CN102455811 A CN 102455811A
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Abstract
The invention discloses a method for detecting a touch device. The method comprises the following steps of: 1, detecting to acquire a sensing value of a sensing unit on the touch device; 2, comparing the acquired sensing value with a reference threshold value, and judging whether a state of the sensing unit is an effective touch or an ineffective touch according to a comparison result; and 3, acquiring touch information of the touch device according to the state of the effective touch and/or the ineffective touch. The invention also discloses a device for detecting the touch device. The device is used for comparing the acquired sensing value with the reference threshold value, judging whether the state of the sensing unit is the effective touch or the ineffective touch according to the comparison result, and acquiring touch information of the touch device according to the state of the effective touch and/or the ineffective touch. Different sensing values of the sensing unit are converted into the uniform effective touch and/or the uniform ineffective touch state, so that the algorithm can be simplified effectively, and requirements for system hardware can be lowered.
Description
Technical field
The invention belongs to the touch pad technology field, be specifically related to a kind of detection method and pick-up unit of contactor control device.
Background technology
Along with high-speed development of science and technology, snafu variation has taken place in electronic product, along with the appearance of recent touch electronic product; The increasing people of receiving of touch-control product pursue; Not only it can save the space, be convenient for carrying, and user finger or pointer etc. just can direct control; Use comfortable, very convenient.For example, the common personal digital assistant (PDA) of existing market, touch-control class mobile phone, portable notebook computer or the like have all strengthened the input to touch technology, use so touch-control device must have more widely in every field in the future.
At present; Capacitance type touch-control panel since wear-resistant, life-span long and on light loss and system behavio(u)r, have more advantage; So capacitance type touch-control panel has received pursuing of market recently; Various capacitance touching control screen products emerge one after another, and the principle of work of capacitance type touch-control panel generally is to come the capacitance variations of induction panel to judge the position and the action of finger through a touch-control chip.
When touch detected, capacitance detecting detected respectively laterally and the longitudinal electrode array successively, according to touching the front and back changes in capacitance, confirmed lateral coordinates and along slope coordinate respectively, was combined into the touch coordinate on plane then.The scan mode of self-capacitance is equivalent to project to X axle and Y direction to the touch point on the touch-screen respectively, calculates coordinate at X axle and Y direction respectively then, is combined into the coordinate of touch point at last.
Existing contactor control device is done historical record to the detection method of touch-control to the influence value of each sensing unit, and the influence value variation of sensing unit is made analysis, calculated, and method is loaded down with trivial details, complex algorithm, and written program is longer, takies more multiple memory cell.Therefore, to the processor of embedded system, program storage requires high, has increased developer's workload and item difficulty.
Summary of the invention
The technical matters that the present invention solves is the complex algorithm of contactor control device detection method in the prior art, to the System Hardware Requirement problem of higher.
For solving the problems of the technologies described above, the present invention provides following technical scheme:
A kind of detection method of contactor control device comprises: step 1: the influence value that detects and obtain sensing unit on the contactor control device; Step 2: influence value that obtains and reference threshold are compared, and the state that obtains sensing unit according to comparative result is effectively to touch or invalid touch; Step 3: the touch information that obtains contactor control device according to the state of effective touch and/or invalid touch.
The present invention also provides another kind of pick-up unit, is used to detect the touch of object on the contactor control device, comprising: detection module, detect and obtain the influence value of sensing unit on the contactor control device; Comparison module compares influence value that obtains and reference threshold, obtains the effective touch and the invalid touch of sensing unit according to comparative result; Computing module: the touch information that obtains contactor control device according to the state of effective touch and/or invalid touch.
Compared with prior art the present invention has following beneficial effect: the detection method of a kind of contactor control device that the embodiment of the invention provides and pick-up unit; Influence value that obtains and reference threshold are compared; The state that obtains sensing unit according to comparative result is effectively to touch or invalid touch, and obtains the touch information of contactor control device according to the state of effective touch and/or invalid touch.Different influence values with sensing unit convert unified effective touch and/or invalid touch condition into like this, shortcut calculation effectively, and reduce requirement to system hardware.
Description of drawings
Fig. 1 is the process flow diagram of embodiment of the invention detection method.
Fig. 2 is the view that sensing unit is touched on the embodiment of the invention contactor control device.
Fig. 3 is the view that the directions X sensing unit is touched on the embodiment of the invention contactor control device.
Fig. 4 is the view that Y direction sensing unit is touched on the embodiment of the invention contactor control device.
Fig. 5 is an embodiment of the invention pick-up unit block diagram.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 is the process flow diagram of embodiment of the invention detection method; A kind of detection method of contactor control device is provided, comprises: step 1: the influence value that detects and obtain sensing unit on the contactor control device; Step 2: influence value that obtains and reference threshold are compared, and the state that obtains sensing unit according to comparative result is effectively to touch or invalid touch; Step 3: the touch information that obtains contactor control device according to the state of effective touch and/or invalid touch.The detection method of a kind of contactor control device that the embodiment of the invention provides; Influence value that obtains and reference threshold are compared; The state that obtains sensing unit according to comparative result is effectively to touch or invalid touch, and obtains the touch information of contactor control device according to the state of effective touch and/or invalid touch.Different influence values with sensing unit convert unified effective touch and invalid touch condition into like this, shortcut calculation effectively, and reduce requirement to system hardware.
Fig. 2 is the view that sensing unit is touched on the embodiment of the invention contactor control device; Calculate for convenient; The sensing unit of directions X on the contactor control device and Y direction is put on numbering respectively in order, and directions X from 1 to 12 is an example, and Y direction from 1 to 7 is an example; F1 and F2 are respectively the zones of two finger touch among the figure, and F1 is effective touch area that these two fingers contact touch pad with F2.The sensing unit that F1 touches is: X2, X3, X4 and Y2, Y3, Y4; The sensing unit that F2 touches is: X6, X7, X8 and Y2, Y3, Y4.Having 9 sensing unit: X2, X3, X4, X6, X7, X8 and Y2, Y3, Y4 is touched; See if directions X and Y direction branch come; Like Fig. 3 is the view that the directions X sensing unit is touched on the embodiment of the invention contactor control device, has X2, X3, X4, X6, X7, X8 to be touched on this direction; Fig. 4 is the view that Y direction sensing unit is touched on the embodiment of the invention contactor control device; There are Y2, Y3, Y4 to be touched on this direction.Detection obtains the influence value of above-mentioned 9 sensing units and compares with reference threshold; If the threshold ratio reference threshold of these sensing units is big; Think that then these sensing units are touched; And the sensing unit state that these are touched is designated as effective touch condition, this effective touch condition is represented with " 1 "; Sensing unit that is not touched or sensing unit influence value are designated as invalid touch condition less than the sensing unit of reference threshold, and this invalid touch condition is represented with " 0 ".It is to touch in order to prevent or to reduce false touch that reference threshold is set here; And will effectively touch with invalid touch respectively with digital signal " 1 " and " 0 " expression, made things convenient for later computing.
In the step 3 of Fig. 1, further comprise: judge whether state is adjacent for the sensing unit that effectively touches, if a plurality of adjacent sensing unit that effectively touches is combined as a sensing unit group; Promptly upgrade the border that object touches, adjacent sensing unit is combined as a sensing unit group; The sensing unit X2 of the directions X among Fig. 2, X3, X4 are effectively touch and adjacent; Sensing unit X6, X7, X8 are effectively touch and adjacent; Then can judge two sensing unit groups are arranged on the directions X; F1 and F2 respectively are one group, and the quantity that touches object on the direction equals the quantity of sensing unit group on this direction, and the quantity that can obtain touch object on the directions X like this is 2; The border, the left and right sides of touch area F1 is respectively sensing unit X2 and X4, and the border, the left and right sides of touch area F2 is respectively X6 and X8.The sensing unit Y2 of Y direction, Y3, Y4 are effectively touch and adjacent, and then can judge has a sensing unit group on the Y direction, and the quantity that can obtain touch object on the Y direction like this is 1; The up-and-down boundary of this touch area is respectively sensing unit Y2 and Y4.Compare the population size that touches object on the both direction then, the quantity of actual touch object is the maximal value that touches object quantity on the both direction.By four borders of the above touch area sensing unit group that obtains, can obtain the area of touch area; And, can be easy to obtain touching the position of object by the position of each sensing unit in the sensing unit group of touch area.
Fig. 5 is an embodiment of the invention pick-up unit block diagram; A kind of pick-up unit is provided, has been used to detect the touch of object on the contactor control device, having comprised: detection module 21, detect and obtain the influence value of sensing unit on the contactor control device; Comparison module 22 compares influence value that obtains and reference threshold, and the state that obtains sensing unit according to comparative result is effectively to touch or invalid touch; Computing module 23: the touch information that obtains contactor control device according to the state of effective touch and/or invalid touch.The comparison module of this pick-up unit compares influence value that obtains and reference threshold; The state that obtains sensing unit according to comparative result is effectively to touch or invalid touch, and obtains the touch information of contactor control device according to the state of effective touch and/or invalid touch.Different influence values with sensing unit convert unified effective touch and invalid touch condition into like this, shortcut calculation effectively, and reduce requirement to system hardware.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the detection method of a contactor control device is characterized in that, comprising:
Step 1: the influence value that detects and obtain sensing unit on the contactor control device;
Step 2: influence value that obtains and reference threshold are compared, and the state that obtains sensing unit according to comparative result is effectively to touch or invalid touch;
Step 3: the touch information that obtains contactor control device according to the state of effective touch and/or invalid touch.
2. the detection method of contactor control device according to claim 1; It is characterized in that; In step 3, further comprise: judge whether state is adjacent for the sensing unit that effectively touches, if a plurality of adjacent sensing unit that effectively touches is combined as a sensing unit group.
3. the detection method of contactor control device according to claim 2 is characterized in that, the quantity that touches object on the direction equals the quantity of sensing unit group on this direction.
4. the detection method of contactor control device according to claim 3 is characterized in that, the quantity that touches object is the maximal value that all directions touch object quantity.
5. the detection method of contactor control device according to claim 2 is characterized in that, also comprises: the area that obtains the touch area according to the border of sensing unit group.
6. the detection method of contactor control device according to claim 2 is characterized in that, also comprises: obtain touch location according to the sensing unit group.
7. a pick-up unit is used to detect the touch of object on the contactor control device, it is characterized in that, comprising:
Detection module detects and obtains the influence value of sensing unit on the contactor control device;
Comparison module compares influence value that obtains and reference threshold, and the state that obtains sensing unit according to comparative result is effectively to touch or invalid touch;
Computing module: the touch information that obtains contactor control device according to the state of effective touch and/or invalid touch.
8. pick-up unit according to claim 7; It is characterized in that said computing module also comprises judging unit, be used for judging whether state is adjacent for the sensing unit that effectively touches; If a plurality of adjacent sensing unit that effectively touches is combined as a sensing unit group.
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| CN2010105252509A CN102455811A (en) | 2010-10-30 | 2010-10-30 | Method and device for detecting touch device |
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| CN2010105252509A CN102455811A (en) | 2010-10-30 | 2010-10-30 | Method and device for detecting touch device |
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Cited By (12)
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| CN102968238A (en) * | 2012-12-03 | 2013-03-13 | 旭曜科技股份有限公司 | Method for improving linearity of touch coordinate trajectory |
| CN103105975A (en) * | 2013-02-26 | 2013-05-15 | 华为终端有限公司 | Touch identification method and device |
| CN103576844A (en) * | 2012-08-01 | 2014-02-12 | 联想(北京)有限公司 | Data display method and electronic equipment |
| CN103634466A (en) * | 2013-11-15 | 2014-03-12 | 联想(北京)有限公司 | Method and device for preventing accidental touch |
| CN103870184A (en) * | 2012-12-15 | 2014-06-18 | 联想(北京)有限公司 | Intelligent display method and electronic device |
| WO2014169615A1 (en) * | 2013-09-10 | 2014-10-23 | 中兴通讯股份有限公司 | Method and system for preventing false triggering on touch screen |
| CN104601809A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Handwriting unlocking method based on smart touch screen mobile phone |
| CN104737116A (en) * | 2012-10-17 | 2015-06-24 | 感知像素股份有限公司 | Input classification for multi-touch systems |
| CN105373302A (en) * | 2014-08-27 | 2016-03-02 | 义隆电子股份有限公司 | False touch prevention method |
| WO2017143823A1 (en) * | 2016-02-25 | 2017-08-31 | 上海斐讯数据通信技术有限公司 | Method and device for achieving electromagnetic interference resistance of capacitive touchscreen |
| CN111142691A (en) * | 2019-12-31 | 2020-05-12 | 联想(北京)有限公司 | Data processing method and electronic equipment |
| TWI811927B (en) * | 2021-12-28 | 2023-08-11 | 大陸商北京集創北方科技股份有限公司 | Touch signal processing method, touch chip, touch display device and information processing device |
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| CN103576844B (en) * | 2012-08-01 | 2017-11-03 | 联想(北京)有限公司 | The method and electronic equipment of display data |
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| CN103105975B (en) * | 2013-02-26 | 2016-11-23 | 华为终端有限公司 | Touch identification method and device |
| CN103105975A (en) * | 2013-02-26 | 2013-05-15 | 华为终端有限公司 | Touch identification method and device |
| WO2014169615A1 (en) * | 2013-09-10 | 2014-10-23 | 中兴通讯股份有限公司 | Method and system for preventing false triggering on touch screen |
| CN103634466A (en) * | 2013-11-15 | 2014-03-12 | 联想(北京)有限公司 | Method and device for preventing accidental touch |
| CN103634466B (en) * | 2013-11-15 | 2017-03-29 | 联想(北京)有限公司 | A kind of method and device of false-touch prevention |
| CN105373302A (en) * | 2014-08-27 | 2016-03-02 | 义隆电子股份有限公司 | False touch prevention method |
| CN104601809A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Handwriting unlocking method based on smart touch screen mobile phone |
| WO2017143823A1 (en) * | 2016-02-25 | 2017-08-31 | 上海斐讯数据通信技术有限公司 | Method and device for achieving electromagnetic interference resistance of capacitive touchscreen |
| CN111142691A (en) * | 2019-12-31 | 2020-05-12 | 联想(北京)有限公司 | Data processing method and electronic equipment |
| TWI811927B (en) * | 2021-12-28 | 2023-08-11 | 大陸商北京集創北方科技股份有限公司 | Touch signal processing method, touch chip, touch display device and information processing device |
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Application publication date: 20120516 |