CN101859211B - Finger touch positioner and method - Google Patents
Finger touch positioner and method Download PDFInfo
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- CN101859211B CN101859211B CN 201010185054 CN201010185054A CN101859211B CN 101859211 B CN101859211 B CN 101859211B CN 201010185054 CN201010185054 CN 201010185054 CN 201010185054 A CN201010185054 A CN 201010185054A CN 101859211 B CN101859211 B CN 101859211B
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Abstract
The invention discloses a finger touch positioner and a method, belonging to the technical field of touch. The finger touch positioner comprises a solid panel, at least three oscillatory wave sensors and a positioning recognition and treatment unit, wherein the solid panel correspondingly generates and transmits oscillatory wave after contacting with fingers; the oscillatory wave sensors are respectively stuck on the solid panel so as to convert the oscillatory wave generated by contacting fingers with the solid panel into electric signals; and the positioning recognition and treatment unit calculates to obtain the contact position of the finger on the solid panel by receiving the electric signals of the oscillatory wave sensor and combining the physical position information of the oscillatory wave sensor. The invention fully utilizes the oscillatory wave generated by contacting fingers with the solid panel to realize precise positioning of fingers by low cost.
Description
Technical field
The invention belongs to the touch technology field, particularly a kind of finger touch positioner and method.
Background technology
Along with the widespread use of touch technology, people feel all the more to point the convenience of controlling, the particularly release of American apple company mobile phone and panel computer, promote especially people to the exploration of new technology.
At present popular capacitive touch screen can conveniently realize singly referring to or referring to more operation, but cost is high, is subject to the liquid bearing accuracy, and contactor control device must place the display screen front, can affect like this display brightness of display screen.For the relatively cheap resistance touch screen of price, also can realize finger manipulation, but easily damaged, and contactor control device need to be arranged on the display screen front equally and affect 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, the 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 point controlled, cost is low and the locating device of registration.
Summary of the invention
Purpose of the present invention is intended to one of solve the aforementioned problems in the prior at least.
For this reason, embodiments of the invention propose finger touch positioner and the method for the low and registration of a kind of cost.
According to an aspect of the present invention, the embodiment of the invention has proposed a kind of finger touch positioner, and described finger touch positioner comprises: solid-state panel correspondingly produces and propagates vibration wave after finger is in contact with it; At least 3 vibration wave sensors are close to respectively on the described solid-state panel, contact the vibration wave that is produced with described solid-state panel and are converted into electric signal pointing; The fixation and recognition processing unit by receiving the electric signal of described vibration wave sensor, and in conjunction with the physical location information of described vibration wave sensor, calculates and obtains the contact position of finger on described solid-state panel.
The further embodiment according to the present invention, described vibration wave sensor comprises sonic sensor or piezoelectric sensor.
The further embodiment according to the present invention, described vibration wave sensor are omnidirectional's vibration wave sensor.
The further embodiment according to the present invention, the distance between the described vibration wave sensor is to arrange according to the sensitivity of sensor itself and the light and heavy degree of finger touches.
The further embodiment according to the present invention, described solid-state panel are any non-liquid state, non-gaseous material.
The further embodiment according to the present invention, but described solid-state panel multiple-layer stacked.Described vibration wave sensor is embedded in the inside of described solid-state panel.
The further embodiment according to the present invention, described vibration wave sensor is placed with front or the back side at described solid-state panel, and wherein the finger contact face is the front of described solid-state panel.
The further embodiment according to the present invention, described fixation and recognition processing unit is according to the electric signal of signal intensity selective reception predetermined vibration wave sensor.
According to a further aspect in the invention, embodiments of the invention propose a kind of finger touch localization method, and described finger touch localization method may further comprise the steps: a) at solid-state panel at least 3 vibration wave sensors are set and are close to it; B) utilize described vibration wave sensor, the vibration wave that produces after finger is contacted with solid-state panel is converted into electric signal; And c) according to the physical location information of described electric signal and described vibration wave sensor, calculates and obtain the contact position of finger on solid-state panel.
The further embodiment according to the present invention, described vibration wave sensor comprises sonic sensor or piezoelectric sensor.
The further embodiment according to the present invention, described vibration wave sensor are omnidirectional's vibration wave sensor.
The further embodiment according to the present invention in step a, arranges distance between a plurality of vibration wave sensors according to the light and heavy degree of the sensitivity of vibration wave sensor itself and finger touches.
The further embodiment according to the present invention in step a, is placed with front or the back side at solid-state panel with described vibration wave sensor, and wherein the finger contact face is the front of solid-state panel.
The further embodiment according to the present invention in step c, further comprises according to signal intensity and selects the electric signal of predetermined vibration wave sensor and the physical location information of corresponding vibration wave sensor to calculate from described electric signal.
Finger touch positioner of the present invention and method by quantity and the position that the vibration wave sensor rationally is set, take full advantage of finger and the vibration wave that object contact produces, and in the low-cost mode of vibration wave sensor, have realized the accurate location of finger.
In addition, make the vibration wave sensor fit in the back side of display screen, also solved simultaneously the impact on display performance that prior art can not be avoided.The aspect that the present invention adds and advantage will provide in the following description, will become from the following description obviously, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention 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 of finger touch positioner according to an embodiment of the invention;
Fig. 2 is finger touch positioner synoptic diagram in accordance with another embodiment of the present invention;
Fig. 3 is the circuit diagram according to the fixation and recognition processing unit of the embodiment of the invention;
Fig. 4 is the finger touch localization method process flow diagram according to the embodiment of the invention.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
The invention discloses a kind of finger touch positioner and localization method, the vibration wave and the vibration wave sensor that produce with object contact by taking full advantage of finger, in mode cheaply, the accurate location of having realized finger touch.Here, the present invention relates to finger touch positioner and method is to refer to for one hand.
Finger touch positioner of the present invention comprises solid-state panel, at least 3 vibration wave sensors and fixation and recognition processing unit.Solid-state panel can be the material of any non-liquid state, on-gaseous, such as comprising 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 and finger contact, receives the touch action such as finger click, friction, thereby correspondingly produce and propagate vibration wave after finger is in contact with it.
The vibration wave sensor of predetermined quantity is close to respectively on the solid-state panel, contacts the vibration wave that produces with solid-state panel and is converted into electric signal in order to pointing.Minimum 3 vibration wave sensors are set, to respond to single finger when contacting the surface of contact of solid-state panel to being applied to respectively, centered by finger, point to the vibration wave on their all directions, thereby realize the location, accurate contact of single finger from a plurality of directions.
And, linear between the vibration wave energy that the solid-state panel of finger touches produces and the transmission range, it is nearest from finger contact point namely to respond to the strongest sensor, and it is remote from finger contact point to respond to sensor on the weak side, and therefore minimum 3 sensors can be realized the finger contact location.
In the vibration wave number of sensors that arranges during more than 3, the fixation and recognition processing unit can be according to electrical signal intensity, therefrom select the electric signal of 3 vibration wave sensor transmissions of corresponding larger intensity electric signal to carry out accurate localization process, i.e. common 3 point locations.
Here, the vibration wave sensor can be sonic sensor, piezoelectric sensor.
The vibration wave sensor can be placed with in 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 affect the display brightness that such as LCDs, electronic-paper display screen or organic EL display panel etc. has the solid-state panel of display screen, the vibration wave sensor can be placed with the back side at solid-state panel, i.e. the face relative with surface of contact.Place the back side of solid-state panel also can effectively weaken simultaneously the interference that the external world (except its front) vibrates in a jumble of vibration wave sensor.
Perhaps, but for the solid-state panel that comprises the multiple-layer stackeds 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.
The quantity of vibration wave sensor can be adjusted according to actual needs, for example for saving cost or space, removes one of them vibration wave sensor; Perhaps increase more vibration wave sensor for improving precision.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 subject to the impact of direction of vibration propagation.In the more situation of number of sensors, orientation also can be considered.
The vibration wave size sensor that adopts, preferred thickness is controlled at below the 1mm, and length and width or diameter control are below 3mm.And, when adopting a plurality of vibration wave sensor, required distance between each vibration wave sensor is: will be controlled at certain limit according to light and heavy degree and the cost consideration of the required finger touches of the sensitivity of sensor itself, solid-state panel, and usually advise between 10mm～200mm.
The fixation and recognition processing unit be used for to receive and processes 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.
The position of fixation and recognition 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.
The fixation and recognition processing unit can be PC system platform or system-on-a-chip, and the fixation and recognition principle about the fixation and recognition processing unit hereinafter will provide detailed description after a while.
With reference now to Fig. 1,, this figure is the synoptic diagram of finger touch positioner according to an embodiment of the invention.
Fig. 1 is finger touch positioner structural representation according to an embodiment of the invention.As shown in the figure, vibration wave sensor 21～24 is close to four jiaos of places, the back side of putting at solid-state panel 10, and 4 vibration wave sensors are connected with fixation and recognition processing unit 30 by wire.
In the illustrated embodiment, solid-state panel 10 is rectangle, but the present invention is not limited to this shape, and in actual applications, solid-state panel can be set to arbitrary shape according to the actual requirements.
As indicated above, the position of vibration wave sensor 21～24 and quantity can be adjusted according to actual needs, as are close to and put in center, four limits, solid-state panel 10 back sides.
Fig. 2 is finger touch positioner structural representation in accordance with another embodiment of the present invention, and in this embodiment, solid-state panel 10 is the Electronic Paper screen, and the vibration wave sensor that arranges is 9.
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.Vibration wave sensor 41～49 is close to the back side of Electronic Paper screen 10 by equidirectional equidistant three row, three row modes, and all vibration wave sensors 41～49 all are wired on the fixation and recognition processing unit 30 simultaneously.Fixation and recognition processing unit 30 is passed to system platform 50 with the finger contact positional information after the electric signal according to 41～49 transmission of vibration wave sensor carries out the finger contact location.Thereby system platform 50 by control Electronic Paper screen 10, is presented at the contact on the Electronic Paper screen 10 after obtaining the finger contact position.Like this, this device can accurately be verified the touch-control effect from finger contact to showing feedback.
Click Electronic Paper screen 10 or finger on Electronic Paper screen 10 during frictional movement at finger, 9 vibration wave sensors can both be received the signal of varying strength, fixation and recognition processing unit 30 preferably choose wherein 3 signals the strongest come location Calculation.
About the principle of work of fixation and recognition processing unit 30, can be with reference to the circuit diagram of the fixation and recognition processing unit of the embodiment of the invention shown in Figure 3.
As shown in Figure 3, in this embodiment, fixation and recognition processing unit 30 is connected with N the vibration wave sensor 60 of 1～N, thereby according to the electric signal that a plurality of vibration wave sensors 60 that arrange on the solid-state panel provide, the finger contact position is positioned.
In this embodiment, vibration wave sensor 60 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 present invention is not limited to this specific embodiment.
Wherein, fixation and recognition processing unit 30 comprises that respectively N the voltage comparator 34 of N integrating circuit 33, the 1～N of N signal amplifier 32, the 1～N of the 1～N that connects one to one with N vibration wave sensor 60,1 N select 1 analog switch 35,1 analog to digital converter (A/D) 36 and processor (CPU) 37.
Usually and since the signal of vibration wave sensor 60 a little less than, about tens millivolts, therefore need amplify through signal amplifier 32, generally amplify 30～100 times.Signal after the amplification is connected on voltage comparator 34 and the integrating circuit 33, and the effect of voltage comparator 34 is the reference voltages that whether surpass certain setting by the signal after relatively amplifying, and such as 500 millivolts, occurrence will be seen signal to noise ratio (S/N ratio).If surpass, export immediately high level or low level notification processor 37, after there is signal on processor 37 certain road of acquisition, close the response to all voltage comparators 34, until calculating, processor 37 finishes one-time positioning.The amplifying signal that processor 37 starts synchronously to this road and near 2～4 vibration wave sensors 60 thereof carries out integration, and the integration certain hour for example stops integration after about 100 microseconds.By analog switch 35 and analog to digital converter 36, processor 37 successively obtains the amplifying signal integrated value of this road and near 2～4 vibration wave sensors thereof again.
Real data proves that " size of integrated value " and " the solid-state positions of panels of finger contact is to distance between each vibration wave sensor " is close to linear relationship, therefore after having obtained 3 integrated values and physical location than the strong vibration wave sensor, namely can obtain to point the contact position on solid-state panel.
In addition, the invention also discloses a kind of finger touch localization method, the finger touch localization method process flow diagram of the embodiment of the invention as shown in Figure 4.
Described finger touch localization method may further comprise the steps: at solid-state panel at least 3 vibration wave sensors are set and are close to (step 102) with it.Then, utilize the vibration wave sensor that arranges, the vibration wave that produces after finger is contacted with solid-state panel is converted into electric signal (step 104).
Here, the vibration wave sensor can be the sensor in the device among the present invention, and its arrangement and function on solid-state panel can be as indicated above.
At last, according to the physical location information of described electric signal and vibration wave sensor, calculate and obtain the contact position (step 106) of finger on solid-state panel.In step 106, can utilize the fixation and recognition processing unit in apparatus of the present invention, from the electric signal of vibration wave sensor, select stronger several electric signal according to signal intensity, and carry out finger contact in conjunction with the physical location information of corresponding vibration wave sensor and accurately locate.
Finger touch positioner of the present invention and method by quantity and the position that the vibration wave sensor rationally is set, take full advantage of finger and the vibration wave that object contact produces, and in the low-cost mode of vibration wave sensor, have realized the accurate location of finger.
In addition, make the vibration wave sensor fit in the back side of display screen, also solved simultaneously the impact on display performance that prior art can not be avoided.
Finger touch positioner of the present invention and method, technique is simple compared to existing technology, and cost more has superiority.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present invention is by claims and be equal to and limit.
Claims (7)
1. a finger touch positioner is characterized in that, described finger touch positioner comprises:
Solid-state panel correspondingly produces and propagates vibration wave after finger is in contact with it;
At least 3 vibration wave sensors are embedded in respectively the inside of described solid-state panel, contact the vibration wave that is produced with described solid-state panel and are converted into electric signal pointing;
The fixation and recognition processing unit by receiving the electric signal of described vibration wave sensor, and in conjunction with the physical location information of described vibration wave sensor, calculates and obtains the contact position of finger on described solid-state panel; Wherein,
Described solid-state panel multiple-layer stacked;
Distance between the described vibration wave sensor is to arrange according to the sensitivity of sensor itself and the light and heavy degree of finger touches;
Described fixation and recognition processing unit calculates according to the electric signal of 3 vibration wave sensors of signal intensity selection maximum intensity and the physical location of corresponding vibration wave sensor.
2. finger touch positioner according to claim 1 is characterized in that, described vibration wave sensor comprises sonic sensor or piezoelectric sensor.
3. finger touch positioner according to claim 1 is characterized in that, described vibration wave sensor is omnidirectional's vibration wave sensor.
4. finger touch positioner according to claim 1 is characterized in that, described solid-state panel is any non-liquid state, non-gaseous material.
5. a finger touch localization method is characterized in that, described finger touch localization method may further comprise the steps:
Embedded at least 3 vibration wave sensors in the inside of solid-state panel, and according to the light and heavy degree of the sensitivity of vibration wave sensor itself and finger touches distance between a plurality of vibration wave sensors is set;
Utilize described vibration wave sensor, the vibration wave that produces after finger is contacted with solid-state panel is converted into electric signal; And according to the physical location information of described electric signal and described vibration wave sensor, calculate and obtain the contact position of finger on solid-state panel; Wherein,
Described solid-state panel is formed by multiple-layer stacked;
Select the electric signal of 3 vibration wave sensors of maximum intensity and the physical location of corresponding vibration wave sensor to calculate according to signal intensity.
6. finger touch localization method according to claim 5 is characterized in that, described vibration wave sensor comprises sonic sensor or piezoelectric sensor.
7. finger touch localization method according to claim 5 is characterized in that, described vibration wave sensor is omnidirectional's vibration wave sensor.
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| CN 201010185054 CN101859211B (en) | 2010-05-21 | 2010-05-21 | Finger touch positioner and method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478984A (en) * | 2010-11-30 | 2012-05-30 | 汉王科技股份有限公司 | Piezoelectric positioning electronic device capable of reducing noise interference |
| CN102478983A (en) * | 2010-11-30 | 2012-05-30 | 汉王科技股份有限公司 | Anti-vibration piezoelectric touch control induction device and anti-vibration method of piezoelectric touch control induction device |
| CN102298462A (en) * | 2011-05-31 | 2011-12-28 | 汉王科技股份有限公司 | Electronic device based on vibration induction and control method thereof |
| CN102436345A (en) * | 2011-10-31 | 2012-05-02 | 广州市动景计算机科技有限公司 | Method for interface operation and control of mobile device and implement device |
| UA116771C2 (en) * | 2012-02-02 | 2018-05-10 | Квелкомм Інкорпорейтед | Ultrasonic touch sensor with a display monitor |
| CN102750050A (en) * | 2012-06-06 | 2012-10-24 | 加弘科技咨询(上海)有限公司 | Position detection device and position detection method |
| CN102750051B (en) * | 2012-06-06 | 2015-07-22 | 加弘科技咨询(上海)有限公司 | Position detection device and position detection method |
| CN110413188A (en) * | 2018-04-28 | 2019-11-05 | 北京钛方科技有限责任公司 | Smart machine control method and device |
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| CN1582453A (en) * | 2001-11-08 | 2005-02-16 | 皇家飞利浦电子股份有限公司 | Multi-point touch pad |
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