CN201673484U - Multi-finger touch positioning device - Google Patents
Multi-finger touch positioning device Download PDFInfo
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- CN201673484U CN201673484U CN2010202062620U CN201020206262U CN201673484U CN 201673484 U CN201673484 U CN 201673484U CN 2010202062620 U CN2010202062620 U CN 2010202062620U CN 201020206262 U CN201020206262 U CN 201020206262U CN 201673484 U CN201673484 U CN 201673484U
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Abstract
The utility model discloses a multi-finger touch positioning device, belonging to the touch control technological field. The multi-finger touch positioning device comprises a solid panel, a series oscillation wave sensor and a positioning recognizing and processing unit, wherein the solid panel correspondingly generates and spreads oscillation waves after fingers touch the solid panel, the series oscillation wave sensor is attached on the solid panel according to the array distribution so as to convert the oscillation waves generated by the contact between the fingers and the solid panel into electric signals and the positioning recognizing and processing unit obtains touch positions of the fingers on the solid panel through computation by receiving the electric signals of the oscillation wave sensor and combining with the physical position information of the oscillation wave sensor. By making full use of the oscillation waves generated by the contact between the fingers and an object, the multi-finger touch positioning device of the utility model realizes the accurate positioning of multiple fingers in a low cost way.
Description
Technical field
The utility model belongs to the touch technology field, particularly a kind of multi-finger touch positioning device.
Background technology
Along with the widespread use of touch technology, people feel to point the convenience of controlling, the particularly release of U.S. Apple mobile phone and panel computer all the more, promote the exploration of people to new technology especially.
At present popular capacitive touch screen can conveniently realize singly referring to or referring to more operation, but the cost height, and easily liquid body influences bearing accuracy, and contactor control device must place the display screen front, can influence the display brightness of display screen like this.For the relatively cheap resistance touch screen of price, also can realize finger manipulation, but easily damaged, and contactor control device need be arranged on the display screen front equally and influence display brightness.
In the existing touch technology, only exist minority can place the contactor control device of display screen back.Electromagnetism touch technology for example, information such as position that can the perception time writer, pressure, angle, but this technology is insensitive to the induction of finger, is difficult to realize the finger touch location.
Therefore, need badly at present propose a kind of many fingers controlled, cost is low and location accurate localization device.
The utility model content
The purpose of this utility model is intended to one of solve the aforementioned problems in the prior at least.
For this reason, to propose a kind of cost low and locate accurate multi-finger touch positioning device and method for embodiment of the present utility model.
According to an aspect of the present utility model, the utility model embodiment has proposed a kind of multi-finger touch positioning device, and described multi-finger touch positioning device comprises: the solid-state panel that correspondingly produces and propagate vibration wave after finger is in contact with it; Be close to serial vibration wave sensor on the described solid-state panel by array distribution, contact the vibration wave that is produced with described solid-state panel and be converted into electric signal pointing; And the location identification processing unit that obtains the contact position of a plurality of fingers on solid-state panel, described identification processing unit is by receiving the electric signal of described vibration wave sensor, and, calculate and obtain the contact position of a plurality of fingers on described solid-state panel in conjunction with the physical location information of described vibration wave sensor.
According to the further embodiment of the utility model, described vibration wave sensor comprises sonic sensor or piezoelectric sensor.
According to the further embodiment of the utility model, described vibration wave sensor is omnidirectional's vibration wave sensor.
According to the further embodiment of the utility model, described vibration wave sensor becomes to be equally spaced on X and Y direction.
According to the further embodiment of the utility model, described solid-state panel is any non-liquid state, non-gaseous material.
According to the further embodiment of the utility model, but described solid-state panel multilayer stack.Described vibration wave sensor is embedded in the inside of described solid-state panel.
According to the further embodiment of the utility model, described vibration wave sensor pastes the front or the back side that is placed on described solid-state panel, wherein points the front that surface of contact is described solid-state panel.
According to the further embodiment of the utility model, described location identification processing unit compares the electric signal and the predetermined threshold of the vibration wave sensor of reception, determine that intensity is greater than or less than the electric signal quantity of predetermined threshold, and a plurality of fingers are positioned according to the neighbouring relations between the vibration wave sensor of this quantity correspondence.
Multi-finger touch positioning device of the present utility model, by quantity and the position that serial vibration wave sensor rationally is set, make full use of finger and contact the vibration wave that is produced with object, the low-cost mode with the vibration wave sensor has realized many precise positioning of fingers.
In addition, serial vibration wave sensor is fitted in the back side of display screen, also solved simultaneously prior art the influence that can not avoid to display performance.
Additional aspect and the advantage of the utility model will provide in the following description, will become from the following description obviously, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the synoptic diagram according to the multi-finger touch positioning device of an embodiment of the utility model;
Fig. 2 is the multi-finger touch positioning device synoptic diagram according to another embodiment of the utility model;
Fig. 3 is the circuit diagram according to the location identification processing unit of the utility model embodiment.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described 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.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the utility model, and can not be interpreted as restriction of the present utility model.
The utility model discloses a kind of multi-finger touch positioning device, contact vibration wave and the vibration wave sensor that is produced with object by making full use of finger, in mode cheaply, the accurate location of having realized multi-finger touch.
Multi-finger touch positioning device of the present utility model comprises solid-state panel, serial vibration wave sensor and location identification processing unit.Solid-state panel can be the material of any non-liquid state, on-gaseous, for example comprises plank, force fit plate, sheet metal, injection molding plates, tempered glass, acrylic plate, LCDs, electronic-paper display screen, organic EL display panel (OLED) etc.The front of solid-state panel is used for contacting with finger, receives touch action such as finger click, friction, thereby correspondingly produce and propagate vibration wave after finger is in contact with it.
The serial vibration wave sensor of predetermined quantity is array distribution respectively and is close on the solid-state panel, contacts the vibration wave that is produced with solid-state panel and is converted into electric signal in order to pointing.Series vibration wave sensor becomes to be equally spaced on X and Y direction, generally the about 2mm of spacing or shorter.Each finger can be realized location, i.e. 3 point locations by near the strongest vibration wave sensor of 3 inductions this finger contact position when the surface of contact of the solid-state panel of contact.Wherein consider size of finger own and shortcut calculation, the actual computation formula can be modified to " energy is linear with distance ", and it is nearest from the finger contact point promptly to respond to the strongest sensor, and it is remote from the finger contact point to respond to sensor on the weak side.
Here, the vibration wave sensor can be sonic sensor, piezoelectric sensor.
The vibration wave sensor can paste and be placed on solid-state panel front, the edge position of keeping to the side, and wherein finger is the front of solid-state panel with the surface of contact of solid-state panel.
Perhaps, in order not affect the appearance, perhaps do not influence the display brightness that for example LCDs, electronic-paper display screen or organic EL display panel etc. have the solid-state panel of display screen, the vibration wave sensor can paste the back side that is placed on solid-state panel, promptly relative with surface of contact face.Place the back side of solid-state panel also can effectively weaken simultaneously the interference that the external world (except that its front) vibrates in a jumble of vibration wave sensor.
Perhaps, but for the solid-state panel that comprises the stack of multilayers such as LCDs, tempered glass, current-carrying plate or reflector, the vibration wave sensor can be embedded in the inside of solid-state panel.Like this, the vibration wave sensor can seal, and the interference of the inner mixed and disorderly vibration of system platform of this finger touch positioner is used in reduction equally effectively.
Vibration wave sensor response frequency requires: below the general recommendations 500hz.
About the requirement of vibration wave sensor orientation, preferably adopt omni-directional vibration wave sensor, i.e. the induction of the vibration wave of sensor can not be subjected to the influence of direction of vibration propagation.Under the more situation of number of sensors, orientation also can be considered.
The vibration wave size sensor that is adopted, preferred thickness are controlled at below the 1mm, and length and width or diameter are controlled at below the 5mm.
Identification processing unit in location is used to receive and handle the electric signal that a plurality of vibration wave sensors send, and in conjunction with the physical location information of vibration wave sensor, calculates and obtain the contact position of finger on solid-state panel.Because between vibration wave energy that the solid-state panel of finger touches is produced and the transmission range is a kind of exponential relationship, be a kind of linear relationship substantially between propagation delay time and the transmission range, therefore identification processing unit in location obtains the position of a plurality of fingers on panel according to from the electrical signal energy of serial vibration wave sensor and the master datas such as physical location of vibration wave sensor.
The position of location identification processing unit is random, and it is inner or outside to be arranged on solid face, as long as be connected with the vibration wave sensor electrical.
Location identification processing unit can be PC system platform or system-on-a-chip, and the location recognition principle about location identification processing unit hereinafter will provide detailed description after a while.
With reference now to Fig. 1,, this figure is the synoptic diagram according to the multi-finger touch positioning device of an embodiment of the utility model.
Fig. 1 is the multi-finger touch positioning device structural representation according to an embodiment of the utility model.As shown in the figure, serial vibration wave sensor 20 is the back side that array distribution is close to solid-state panel 10, and each vibration wave sensor all can be electrically connected to location identification processing unit 30 by lead.
In the illustrated embodiment, solid-state panel 10 is a rectangle, and vibration wave sensor 20 is circular, but the utility model is not limited to this shape, and in actual applications, solid-state panel and vibration wave sensor can be set to arbitrary shape according to the actual requirements.
As indicated above, the position of serial vibration wave sensor 20 and quantity can be adjusted according to actual needs, become to be equally spaced in X and Y direction.
Fig. 2 is the multi-finger touch positioning device structural representation according to another embodiment of the utility model, and in this embodiment, solid-state panel 10 is the Electronic Paper screen.
As shown in the figure, Electronic Paper screen 10 is connected on the system platform 50, and system platform 50 is used for controlling Electronic Paper screen 10 and shows.Series vibration wave sensor 20 is close to the back side of Electronic Paper screen 10 by equidistant array way, and all vibration wave sensors 20 all are wired on the location identification processing unit 30 simultaneously.
Click Electronic Paper screen 10 or a plurality of finger on Electronic Paper screen 10 during frictional movement at a plurality of fingers, series vibration wave sensor can both be received the signal of varying strength, and be transferred to location identification processing unit 30, come location Calculation to refer to the position in conjunction with the array distribution of serial vibration wave sensor 20 more more.
About the principle of work of location identification processing unit 30, can be with reference to the circuit diagram of the location identification processing unit of the multi-finger touch of the utility model embodiment shown in Figure 3.
As shown in Figure 3, in this embodiment, location identification processing unit 30 is connected with N the vibration wave sensor 20 of 1～N, thereby according to the electric signal that the serial vibration wave sensor that is provided with on the solid-state panel provides, many finger contact position is positioned.
In this embodiment, serial vibration wave sensor 20 is converted to voltage signal with vibration wave.Those skilled in the art by using the vibration wave sensor of concrete dissimilar or model, can change vibration wave and obtain for example electric signal of strength of current, resistance or other digital forms obviously as can be known, and the utility model is not limited to this specific embodiment.
Wherein, identification processing unit 30 in location comprises and N the signal amplifier 32 of the 1～N that connects one to one with N vibration wave sensor 20 respectively, N voltage comparator 34, reference voltage regulator 35 and the processor (CPU) 37 of 1～N.
Usually, since the signal of vibration wave sensor 20 a little less than, about tens millivolts, therefore need to amplify through signal amplifier 32,30～100 times of general amplifications, the signal after the amplification is connected on the voltage comparator 34, and the effect of voltage comparator 34 is the reference voltages that whether surpass certain setting by the signal after relatively amplifying, as 500 millivolts, occurrence will be seen signal to noise ratio (S/N ratio).If surpass, export high level or low level notification processor 37 immediately, after there is signal on processor 37 certain road of acquisition, close response to all voltage comparators 34, calculate up to processor 37 and finish one-time positioning.
Reference voltage regulator 35 arrives required numerical value by the accurate voltage of processor 37 adjustable integral basis, reference voltage 35 for example is connected on the positive input terminal of N voltage comparator 34, the electric signal that vibration wave sensor 20 sends amplifies (enlargement factor is relevant with the signal amplitude and the operating supply voltage of vibration wave sensor 20) by signal amplifier 32, and is connected on the negative input end of voltage comparator 34.Like this, carry out the comparison of setting threshold (reference voltage) by voltage comparator 34 with the electric signal that corresponding vibration wave sensor 20 sends.
When the result who monitors 34 outputs of all voltage comparators when processor 37 was high level, being judged to be did not have the finger contact condition; When processor 37 has monitored 1 when being output as low level, the physical location of then judging the vibration wave sensor of this low level correspondence is the finger touch position.
When processor 37 has monitored a plurality of when being output as low level, judge at first whether these corresponding vibration wave sensors of low level output institute are adjacent, if it is adjacent, 37 of processors are heightened reference voltage immediately, up to having only 1 for low level, and judge that the physical location of the pairing vibration wave sensor of this low level is the finger touch position.
If all non-conterminous, then explanation has a plurality of finger contacts, and the physical location of the pairing vibration wave sensor of these low levels is many finger touch position.
If some is adjacent, some is non-conterminous, then non-conterminous vibration wave sensor is to there being the finger contact, adjacent vibration wave sensor then adopts preceding method, improve reference voltage by reference voltage regulator 35, up to having only 1 for low level, thereby the pairing vibration wave sensor of this low level physical location is the finger touch position.
Certainly, in an embodiment of the present utility model, reference voltage 35 also can be connected on the negative input end of N voltage comparator 34, and vibration wave sensor 20 is connected on the positive input terminal of voltage comparator 34.
Correspondingly, when the result who monitors 34 outputs of all voltage comparators when processor 37 was low level, being judged to be did not have the finger contact condition; When processor 37 has monitored 1 when being output as high level, the physical location of then judging the vibration wave sensor of this high level correspondence is the finger touch position.
When processor 37 has monitored a plurality of when being output as high level, judge at first whether these corresponding vibration wave sensors of high level output institute are adjacent, if it is adjacent, 37 of processors are turned down reference voltage immediately, up to having only 1 for high level, and judge that the physical location of the pairing vibration wave sensor of this high level is the finger touch position.
If all non-conterminous, then explanation has a plurality of finger contacts, and the physical location of the pairing vibration wave sensor of these high level is many finger touch position.
If some is adjacent, some is non-conterminous, then non-conterminous vibration wave sensor is to there being the finger contact, adjacent vibration wave sensor then adopts preceding method, turn down reference voltage by reference voltage regulator 35, up to having only 1 for high level, thereby the pairing vibration wave sensor of this high level physical location is the finger touch position.
Multi-finger touch positioning device of the present utility model, by the quantity and the position of array vibration wave sensor rationally are set, make full use of finger and contact the vibration wave that is produced with object, the low-cost mode with the vibration wave sensor has realized many precise positioning of fingers.
In addition, make the vibration wave sensor fit in the back side of display screen, also solved simultaneously prior art the influence that can not avoid to display performance.
Multi-finger touch positioning device of the present utility model and method, technology is simple compared to existing technology, and cost more has superiority.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present utility model is by claims and be equal to and limit to these embodiment.
Claims (9)
1. a multi-finger touch positioning device is characterized in that, described multi-finger touch positioning device comprises:
After being in contact with it, finger correspondingly produces and propagates the solid-state panel of vibration wave;
Be close to serial vibration wave sensor on the described solid-state panel by array distribution, contact the vibration wave that is produced with described solid-state panel and be converted into electric signal pointing; And
Obtain the location identification processing unit of the contact position of a plurality of fingers on solid-state panel, described identification processing unit is by receiving the electric signal of described vibration wave sensor, and, calculate and obtain the contact position of a plurality of fingers on described solid-state panel in conjunction with the physical location information of described vibration wave sensor.
2. multi-finger touch positioning device according to claim 1 is characterized in that, described vibration wave sensor comprises sonic sensor or piezoelectric sensor.
3. multi-finger touch positioning device according to claim 1 is characterized in that, described vibration wave sensor is omnidirectional's vibration wave sensor.
4. multi-finger touch positioning device according to claim 1 is characterized in that, described vibration wave sensor becomes to be equally spaced on X and Y direction.
5. multi-finger touch positioning device according to claim 1 is characterized in that, described solid-state panel is any non-liquid state, non-gaseous material.
6. multi-finger touch positioning device according to claim 1 is characterized in that, but described solid-state panel multilayer stack.
7. according to claim 5 or 6 described multi-finger touch positioning devices, it is characterized in that described vibration wave sensor pastes the front or the back side that is placed on described solid-state panel, wherein points the front that surface of contact is described solid-state panel.
8. multi-finger touch positioning device according to claim 6 is characterized in that described vibration wave sensor is embedded in the inside of described solid-state panel.
9. multi-finger touch positioning device according to claim 1, it is characterized in that, described location identification processing unit compares the electric signal and the predetermined threshold of the vibration wave sensor of reception, determine that intensity is greater than or less than the electric signal quantity of predetermined threshold, and a plurality of fingers are positioned according to the neighbouring relations between the vibration wave sensor of this quantity correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202062620U CN201673484U (en) | 2010-05-21 | 2010-05-21 | Multi-finger touch positioning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202062620U CN201673484U (en) | 2010-05-21 | 2010-05-21 | Multi-finger touch positioning device |
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| CN201673484U true CN201673484U (en) | 2010-12-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833397A (en) * | 2010-05-21 | 2010-09-15 | 汉王科技股份有限公司 | Multi-finger touch positioning device and method |
| TWI479395B (en) * | 2014-01-09 | 2015-04-01 | Infilm Optoelectronic Inc | Light vieration touch apparatus |
| CN104850279A (en) * | 2015-05-29 | 2015-08-19 | 京东方科技集团股份有限公司 | Sound-wave touch control device and electronic device |
| CN107608571A (en) * | 2017-09-05 | 2018-01-19 | 捷开通讯(深圳)有限公司 | A kind of sound wave touch control device and terminal |
-
2010
- 2010-05-21 CN CN2010202062620U patent/CN201673484U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833397A (en) * | 2010-05-21 | 2010-09-15 | 汉王科技股份有限公司 | Multi-finger touch positioning device and method |
| CN101833397B (en) * | 2010-05-21 | 2014-04-16 | 汉王科技股份有限公司 | Multi-finger touch positioning device and method |
| TWI479395B (en) * | 2014-01-09 | 2015-04-01 | Infilm Optoelectronic Inc | Light vieration touch apparatus |
| CN104850279A (en) * | 2015-05-29 | 2015-08-19 | 京东方科技集团股份有限公司 | Sound-wave touch control device and electronic device |
| WO2016192266A1 (en) * | 2015-05-29 | 2016-12-08 | 京东方科技集团股份有限公司 | Sound wave touch control device and electronic device |
| CN104850279B (en) * | 2015-05-29 | 2017-11-28 | 京东方科技集团股份有限公司 | A kind of sound wave contactor control device and electronic equipment |
| US10248263B2 (en) | 2015-05-29 | 2019-04-02 | Boe Technology Group Co., Ltd. | Acoustic wave touch device and electronic apparatus |
| CN107608571A (en) * | 2017-09-05 | 2018-01-19 | 捷开通讯(深圳)有限公司 | A kind of sound wave touch control device and terminal |
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Granted publication date: 20101215 Termination date: 20180521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |