CN105677095B - The method and apparatus of position detecting - Google Patents
The method and apparatus of position detecting Download PDFInfo
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- CN105677095B CN105677095B CN201610004093.4A CN201610004093A CN105677095B CN 105677095 B CN105677095 B CN 105677095B CN 201610004093 A CN201610004093 A CN 201610004093A CN 105677095 B CN105677095 B CN 105677095B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
- G06F3/0433—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves in which the acoustic waves are either generated by a movable member and propagated within a surface layer or propagated within a surface layer and captured by a movable member
Abstract
The invention relates to a kind of method and apparatus of position detecting.Detecting for touch position, the present invention are to be transmitted using repeatedly one section surface sound wave of offer in a surface acoustic wave type touch control panel, and receive aforementioned multistage surface acoustic wave respectively by surface acoustic wave type touch control panel.In addition, the present invention is, respectively according to the different piece offer part output electric power signal of each section surface sound wave received, completely to export electric power signal in receive process or after receiving to constitute one.
Description
Present patent application is the hair of entitled " method and apparatus of position detecting " application No. is 201210100527.2
The divisional application of bright patent application, the applying date of original application are 09 day on the 04th 2012.
Technical field
The present invention relates to a kind of method and apparatus of detecting touch position, more particularly to one kind in large scale surface acoustic wave
The method and apparatus of panel detection touch position.
Background technique
Surface acoustic wave (SAW) formula touch panel be it is a kind of by a purpose be located in sensing one surface acoustic wave signal in a manner of with
The touch panel for learning the position of the touch-control input on a touch control screen, is to include a piezoelectric material using one
One electric power signal is converted into the surface acoustic wave signal by energy converter, senses the surface acoustic wave signal on the touch control screen again advances
When whether by touch-control input stop and the mode that cannot be received for it.
It is a kind of structural representation of existing surface acoustic wave type touch control panel shown in Figure 1A.As shown in Figure 1A, the touch surface
Plate 10 has a screen area 11 and an echo area 12, has a sensing device 13 in the echo area 12, which has
One first and second horizontal axis inverting element 14a and 14b and one first and second longitudinal axis inverting element 15a and 15b, wherein second is horizontal
Axis and the longitudinal axis inverting element 14b and 15b are defeated with the first horizontal axis and the longitudinal axis inverting element 14a and 15a sending to receive respectively
Enter the corresponding surface acoustic wave signal Signal_V1 and Signal_V2 of electric power signal Signal_Ei1 and Singal_Ei2.In addition,
Sensing device 13 is also single comprising one group of first and second longitudinal axis reflector element 16a and 16b and one group of first and second horizontal axis reflection
First 17a and 17b, and four groups of reflector elements 16a, 16b, 17a and 17b all include multiple reflector R, and those reflectors R is all
For the reflection of fractional transmission part.At this point, surface acoustic wave needed for sensing the possibility contact P input on each horizontal axis and the longitudinal axis
Signal_V2 and Signal_V1 can be provided by those reflectors R by part reflection and fractional transmission effect, and be somebody's turn to do
The line layer that a little reflector R are generally printed on a glass substrate of touch control screen, therefore its low manufacture cost.In addition, those groups
The reflector R of reflector element 16a, 16b, 17a and 17b be all by dredge to solid matter column (by surface acoustic wave Signal_V1 and
The direction of travel of Signal_V2 is watched), the reason for this is that surface acoustic wave Signal_V1 and Signal_V2 is not adding density design
It can make it that can reflect compared with the reflector R at rear because of part reflex on single group of reflector element 16a, 16b, 17a and 17b
Surface acoustic wave Signal_V1 and Signal_V2 it is less, will influence in this way to those group of reflector element 16a, 16b, 17a and
The sensing function of the more latter half of corresponding input contact position of 17b, therefore those group of reflector element 16a, 16b, 17a and 17b are added
Average compensation is subject to the surface acoustic wave Signal_V1 and Signal_V2 that are input to each reflector R to reach with density setting
Effect.Be respectively shown in Figure 1B, Fig. 1 C and Fig. 1 D surface acoustic wave type touch control panel shown in figure 1A when contactless P is inputted and
There is the potential diagram that electric power signal Signal_Eo1 and Singal_Eo2 are exported when contact P input, wherein Vy is output electric power signal
The potential diagram of Signal_Eo1, and the coordinate of the X-axis for input contact P, Vx are then the electricity for exporting electric power signal Singal_Eo2
Bitmap, and the coordinate of the Y-axis for input contact P, wherein the long reason of waveform time of the waveform time of Vx compared with Vy is second
Caused by surface acoustic wave Signal_V2 paths traversed is longer, and the depressed section of Fig. 1 D is that P input in contact is sensed
It represents, by the foundation as the position for determining contact P input.In addition, Vy and Vx may have a sharp wave (not show in section start
In diagram), it is inputing power signal Signal_Ei1 and Singal_Ei2 directly horizontal by second respectively in rigid input
Axis reflector element group 17b and the second longitudinal axis reflector element group 16b and be the second horizontal axis inverting element 14b and the second longitudinal axis transducing member
Caused by part 15b is received.
However, surface acoustic wave is with the reflection for transmitting distance and process in large-sized surface acoustic wave type touch control panel
The increase of device quantity and weaken, jointly, the recess amplitude of aforementioned depressed section is also with reduction.Therefore, away from horizontal axis and vertical
The touching of axis inverting element 14a and 15a remotely is possible to because the amplitude of recess is not above threshold limit value, and can not be detectd
It measures.
It can be seen that the above-mentioned prior art there will naturally be inconvenient and defect, and pole waits being further improved.To understand
Certainly above-mentioned problem, relevant manufactures there's no one who doesn't or isn't painstakingly seek solution, but have no always for a long time applicable
Design is developed completions, and the not appropriate structure and method of common product and method is able to solve the above problem, this is obvious
It is the problem of related dealer is suddenly to be solved.Therefore a kind of method and apparatus of new position detecting how is founded, it is real to belong to current
One of important research and development project, also becoming current industry pole needs improved target.
Summary of the invention
It is an object of the present invention to solve the surface acoustic wave signal of large scale surface acoustic wave type touch control panel because transmitting too far
And cause signal excessively faint, so that being difficult to the problem of telling touching, and provide the method and dress of a kind of new position detecting
It sets, the technical problem to be solved is that make it through using repeatedly one section surface sound wave of offer in surface acoustic wave type touch control panel
Transmitting provides part output electric power signal according to the different piece of each section surface sound wave received respectively, complete to constitute one
Whole output electric power signal.The each section of surface acoustic wave signal received gives different degrees of reinforcing, thus can overcome surface sound
Wave signal is very suitable for practical because transmitting the problem for causing signal excessively faint too far.
In addition, another object of the present invention is to, a kind of method and apparatus of new position detecting is provided, it is to be solved
Technical problem be so that it is detected a position respectively further according to each depressed section of complete output electric power signal, thus
It is more suitable for practical.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention
A kind of position detecting method, comprising: provide a surface acoustic wave type touch control panel；Multistage surface acoustic wave is provided in the surface sound
The transmitting of waves touch panel；The surface acoustic wave in surface acoustic wave type touch control panel transmitting is received respectively；And foundation connects respectively
The different piece of each section surface sound wave received provides one section of part output electric power signal, to gather all parts output electric energy
Signal becomes a complete output electric power signal.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
The method of position detecting above-mentioned, wherein exporting electric power signal in rear part in the complete output electric power signal
Initial signal be greater than preceding part output electric power signal end signal.
The method of position detecting above-mentioned, wherein the wave number of posterior section surface sound wave is big in the multistage surface acoustic wave
In the wave number of preceding section surface sound wave.
The method of position detecting above-mentioned, wherein each section of part output electric power signal is produced according to a gain respectively
Raw, the gain corresponding to posterior section surface sound wave is greater than the gain corresponding to preceding section surface sound wave.
The method of position detecting above-mentioned, wherein each section of part output electric power signal is all located at a preset range
It is interior.
The method of position detecting above-mentioned, wherein the surface acoustic wave type touch control panel is formulated for multistage detection area,
Each section of part output electric power signal is respectively corresponding to one section of detection area.
The method of position detecting above-mentioned, wherein the multistage detection area includes along the surface acoustic wave type touch control panel longitudinal axis
Multistage detection area to planning and the multistage detection area along the planning of surface acoustic wave type touch control panel X direction.
The method of position detecting above-mentioned, wherein each output electric power signal is respectively corresponding to a time interval,
Described in time interval be with reference to receive the section surface sound wave starting time or the initial time of the section surface sound wave is provided.
The method of position detecting above-mentioned, wherein the multistage surface acoustic wave includes initial direction of transfer along surface acoustic wave type
The multistage surface acoustic wave of touch panel vertical axis and the multistage surface acoustic wave along surface acoustic wave type touch control panel X direction.And point
Not received surface acoustic wave includes along the received multistage surface acoustic wave of surface acoustic wave type touch control panel vertical axis and along surface acoustic wave
The received multistage surface acoustic wave of formula touch panel X direction.
The method of position detecting above-mentioned, wherein the complete output electric power signal the surface acoustic wave type touch control panel not
Saw-tooth wave type is presented when touched.
The object of the invention to solve the technical problems also uses following technical scheme to realize.It is proposed according to the present invention
A kind of device of position detecting, comprising: a surface acoustic wave type touch control panel, including it is distributed in the surface acoustic wave type touch control panel four
The echo area on side and a sensing device, the sensing device include: one first longitudinal axis inverting element and one first horizontal axis inverting element,
Multistage surface acoustic wave is provided respectively to transmit in the surface acoustic wave type touch control panel；One second longitudinal axis inverting element and one second horizontal axis
Inverting element receives the surface acoustic wave in surface acoustic wave type touch control panel transmitting respectively；And a control circuit, foundation respectively
The different piece of each section surface sound wave received provides one section of part output electric power signal, to gather all parts output electricity
Energy signal becomes a complete output electric power signal.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
The device of position detecting above-mentioned, wherein exporting electric power signal in rear part in the complete output electric power signal
Initial signal be greater than preceding part output electric power signal end signal.
The device of position detecting above-mentioned, wherein the wave number of posterior section surface sound wave is big in the multistage surface acoustic wave
In the wave number of preceding section surface sound wave.
The device of position detecting above-mentioned, wherein it is described each section part output electric power signal be by sensing device respectively according to
It is generated according to a gain, the gain corresponding to posterior section surface sound wave is greater than being somebody's turn to do corresponding to preceding section surface sound wave
Gain.
The device of position detecting above-mentioned, wherein each section of part output electric power signal is all located at a preset range
It is interior.
The device of position detecting above-mentioned, wherein the surface acoustic wave type touch control panel is formulated for multistage detection area,
Each section of part output electric power signal is respectively corresponding to one section of detection area.
The device of position detecting above-mentioned, wherein the multistage detection area includes along the surface acoustic wave type touch control panel longitudinal axis
Multistage detection area to planning and the multistage detection area along the planning of surface acoustic wave type touch control panel X direction.
The device of position detecting above-mentioned, wherein each section of part output electric power signal is respectively corresponding to a time zone
Between, wherein the time interval is with reference to the starting time for receiving the section surface sound wave or to provide the starting of the section surface sound wave
Time.
The device of position detecting above-mentioned, wherein the multistage surface acoustic wave includes being provided by first longitudinal axis inverting element
Initial direction of transfer mentioned along the multistage surface acoustic wave of surface acoustic wave type touch control panel vertical axis with the first horizontal axis inverting element
The multistage surface acoustic wave along surface acoustic wave type touch control panel X direction supplied.And respectively received surface acoustic wave include by this
Two longitudinal axis inverting elements are along the received multistage surface acoustic wave of surface acoustic wave type touch control panel vertical axis and the second horizontal axis transducing member
Part is along the received multistage surface acoustic wave of surface acoustic wave type touch control panel X direction.
The device of position detecting above-mentioned, wherein the complete output electric power signal the surface acoustic wave type touch control panel not
Saw-tooth wave type is presented when touched.
The present invention has obvious advantages and beneficial effects compared with the existing technology.By above-mentioned technical proposal, the present invention
The method and apparatus of position detecting at least have following advantages and the utility model has the advantages that
1, the present invention can be and be reached with increasing wave number for the signal enhancement of the surface acoustic wave received, Bu Huishou
It is limited to the gain ability of hardware circuit；
2, the present invention gives different detection areas different signal enhancements, can allow to adaptability signal to maintain one pre-
If range, the size of applicable surface acoustic wave type touch control panel is significantly increased.
In conclusion the invention relates to a kind of method and apparatus of position detecting.Detecting for touch position, this
Invention is transmitted in a surface acoustic wave type touch control panel using repeatedly providing a section surface sound wave, and by surface acoustic wave type touch-control
Panel receives aforementioned multistage surface acoustic wave respectively.In addition, the present invention is in receive process or after receiving, foundation is received respectively
Each section surface sound wave different piece provide part output electric power signal, with constitute one completely output electric power signal.This hair
It is bright technically to have significant progress, and there is apparent good effect, it is really a new and innovative, progressive, practical new design.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Figure 1A is a kind of structural schematic diagram of existing surface acoustic wave type touch control panel.
Figure 1B and Fig. 1 C is that surface acoustic wave type touch control panel shown in figure 1A exports electric power signal in contactless input
Potential diagram.
Fig. 1 D is the potential diagram that surface acoustic wave type touch control panel shown in figure 1A exports electric power signal when there is contact input.
Fig. 2 is a kind of flow diagram of the method for position detecting that first embodiment according to the present invention provides.
Fig. 3 is the schematic diagram of the signal acquisition of first embodiment according to the present invention.
Fig. 4 is the flow diagram of the detecting position of 3rd embodiment according to the present invention.
Fig. 5 A and Fig. 5 B is the touching for across the multistage output electric power signal of detecting that second embodiment according to the present invention provides
The schematic diagram of position.
Fig. 5 C is the touch position for across the multistage output electric power signal of detecting that 3rd embodiment according to the present invention provides
Schematic diagram.
10: surface acoustic wave type touch control panel 11: screen area
12: echo area 13: sensing device
14a: the first horizontal axis inverting element the 14b: the second horizontal axis inverting element
15a: the first longitudinal axis inverting element 15b: the second longitudinal axis inverting element
16a: the first horizontal axis reflector element the 16b: the second horizontal axis reflector element
17a: the first longitudinal axis reflector element 17b: the second longitudinal axis reflector element
Signal_Ei1, Singal_Ei2: inputing power signal
Signal_V1, Signal_V2: surface acoustic wave signal
Signal_Eo1, Singal_Eo2: output electric power signal
P: contact Vy, Vx, V: current potential
P1, P2, P3: detection area
Sw1, Sw2, Sw3: output electric power signal
S1, S2, S3, Sr, S2*r: part output electric power signal
Smix: electric power signal is completely exported
T1, T2: depressed section r: ratio
T: time th: threshold limit value
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to the method and apparatus of position detecting proposed according to the present invention its specific embodiment, structure, side
Method, step, feature and its effect, detailed description is as follows.
Some embodiments of the present invention will be described in as follows.However other than being described below, the present invention can also be extensive
Ground is implemented in other embodiments, and protection scope of the present invention is not limited by embodiment, with the protection of claim
Subject to range.Furthermore to provide clearer description and being easier to understand the present invention, there is no according to its phase for each section in schema
It draws to size, certain sizes are exaggerated compared with other scale dependents；Incoherent detail section is not also painted completely
Out, in the hope of the succinct of schema.
As shown in earlier figures 1A, signal is after providing a string of continuous surface acoustic waves, by the second horizontal axis and longitudinal axis transducing
The signal that element 14b and 15b are received is presented, and signal can gradually weaken, and is jointly influenced corresponding to the depressed section touched
Recess amplitude.
It please refers to shown in Fig. 2, is a kind of process of the method for position detecting that first embodiment according to the present invention provides
Schematic diagram.First as indicated in step 210, in each detecting, multistage surface acoustic wave is provided in a surface acoustic wave type touch control panel
Upper transmitting, and as shown at step 220, receive aforementioned multistage surface acoustic wave respectively by surface acoustic wave type touch control panel.It is aforementioned more
Section surface sound wave can be including initial direction of transfer along the multistage surface acoustic wave of surface acoustic wave type touch control panel vertical axis and edge
The multistage surface acoustic wave of surface acoustic wave type touch control panel X direction.In addition, the surface acoustic wave received respectively includes along surface
The received multistage surface acoustic wave of sound wave type touch panel vertical axis with along the received multistage of surface acoustic wave type touch control panel X direction
Surface acoustic wave.Then, as shown in step 230, in receive process or after receiving, respectively according to each section surface sound received
The different piece of wave provides one section of part output electric power signal, to constitute a complete output electric power signal.
Referring again to shown in Figure 1A, the device of position detecting of the invention include a touch panel 10 have a screen area 11 and
One echo area 12, has a sensing device 13 in the echo area 12, which has first and second horizontal axis transducing
Element 14a and 14b and one first and second longitudinal axis inverting element 15a and 15b, wherein the second horizontal axis and longitudinal axis inverting element 14b
And 15b is respectively to receive the inputing power signal Signal_Ei1 issued with the first horizontal axis and longitudinal axis inverting element 14a and 15a
And the corresponding surface acoustic wave signal Signal_V1 and Signal_V2 of Singal_Ei2, and then output electric power signal is generated respectively
Signal_Eo1 and Signal_Eo2.In addition, sensing device 13 also comprising one group of first and second longitudinal axis reflector element 16a and
16b and one group of first and second horizontal axis reflector element 17a and 17b, and four groups of reflector elements 16a, 16b, 17a and 17b are all wrapped
Containing multiple reflector R, and those reflectors R is all the reflection of fractional transmission part.At this point, sensing the possibility on each horizontal axis and the longitudinal axis
Surface acoustic wave Signal_V2 and Signal_V1 needed for contact P input can be by those reflectors R by part reflection and portion
Transmission effect is divided to be provided, and the line layer that those reflectors R is generally printed on a glass substrate of touch control screen, therefore its
Low manufacture cost.In addition, the reflector R of those group of reflector element 16a, 16b, 17a and 17b can be by dredge to solid matter column (by
The direction of travel of surface acoustic wave Signal_V1 and Signal_V2 are watched).
The transmission of inputing power signal Signal_Ei1 and Singal_Ei2 above-mentioned and output electric power signal Signal_
The reception of Eo1 and Signal_Eo2 is executed by a control circuit (not showing in diagram), and this field has the technology of usual knowledge
Personnel can deduce this well-known technique, and details are not described herein.The method that control circuit executes aforementioned location detecting, such as control electricity
Road has a processor and a storage element, and storage element is loaded with the journey that cooperation processor executes abovementioned steps 210 to step 230
Sequence.
It please refers to shown in Fig. 3, is to be respectively corresponding to the longitudinal axis and cross on surface acoustic wave panel in one example of the present invention
Axle gauge draws multistage detection area, and each section of detection area corresponds to the different section surface sound waves received.Aforementioned multistage surface sound
Wave includes initial direction of transfer along the multistage surface acoustic wave of surface acoustic wave type touch control panel vertical axis and along surface acoustic wave type touch-control
The multistage surface acoustic wave of panel X direction.For example, by taking the longitudinal axis transmits surface acoustic wave as an example, in the y direction of surface acoustic wave panel
Upper planning three sections of detection areas P1, P2 and P3, and three section surface sound waves are transmitted, this three section surfaces sound wave is corresponded to, is connect respectively
Surface acoustic wave W1, W2 and W3 are received, to generate output electric power signal Sw1, Sw2 and Sw3.It is received wherein according to corresponding to
Surface acoustic wave W1 corresponding detection area P1 part generate part output electric power signal S1；According to corresponding to the table received
The part of the corresponding detection area P2 of face sound wave W2 generates part output electric power signal S2；According to corresponding to the surface sound received
The part of the corresponding detection area P3 of wave W3 generates part output electric power signal S3；And Set-dissection exports electric power signal S1,
S2 and S3, which is constituted, completes complete output electric power signal Smix.Although preceding description is by taking the longitudinal axis as an example, the art has logical
The technical staff of Chang Zhishi can deduce that preceding description is also applied for horizontal axis.In addition, output electric power signal Smix includes but is not limited to
Part output electric power signal S1, S2 and S3, output electric power signal before also may include corresponding detection area P1 and corresponding
Detection area P3 later output electric power signal.
Although being that there is the skill of usual knowledge in the art by taking three sections of part output electric power signals as an example in Fig. 3
Art personnel are it can be deduced that the surface acoustic wave of part above-mentioned output electric power signal, transmitting can be different number of segment, and the present invention is not
It limits.In addition, the acquisition of aforementioned each section of part output electric power signal can be according to corresponding to different detection areas
Time interval captures, and wherein the time interval can be with reference to the starting time for receiving the section surface sound wave or provide the segment table
The initial time of face sound wave, that is, away from the starting time for receiving the section surface sound wave or when the starting of the section surface sound wave is provided
Between a period of time, this time of each section surface sound wave is not necessarily identical.
It is that the surface acoustic wave W1, W2 and W3 that receive are converted into output electric energy letter respectively in one example of the present invention
After number Sw1, Sw2 and Sw3, then electric power signal S1, S2 are exported by acquisition part in output electric power signal Sw1, Sw2 and Sw3 respectively
With S3, electric power signal Smix is completely exported to constitute.
It is the surface acoustic wave W1, W2 and the W3 that will receive respectively during received in another example of the present invention
In corresponding to detection area P1, P2 and P3 part be converted into part output electric power signal S1, S2 and S3.
In addition, the invention also includes using increase surface acoustic wave wave number, or by the surface acoustic wave received conversion it is defeated
Electric power signal improves gain out, by output electric power signal amplification, so that part output electric power signal S1, S2 and the S3 dimension being subtracted
It holds in a preset range.
It is to improve output electric power signal to increase the wave number of surface acoustic wave in one example of the present invention.Each section of biography
The wave number for the surface acoustic wave passed can be different.For example, the surface acoustic wave wave number of third section is greater than the surface acoustic wave of second segment
Wave number, and the surface acoustic wave wave number of second segment is greater than the surface acoustic wave wave number of first segment.In other words, at least one section of posterior table
Face sound wave wave number is greater than preceding section surface sound wave wave number.Apparently, complete output electric power signal above-mentioned is in surface acoustic wave
Formula touch panel may be part or all of presentation saw-tooth wave type (sawtooth waveform) when not touched, and sawtooth is presented
The range of wave mode corresponds at least to the range for the touching that surface acoustic wave type touch control panel can detect, or corresponds to aforementioned horizontal axis
And surface acoustic wave is reflected and is passed through the range of surface acoustic wave type touch control panel by longitudinal axis inverting element or reflector.
It is to improve output electric power signal to provide gain in another example of the present invention.Each section receives
Surface acoustic wave, which can be, carrys out acquisition part output electric power signal with different gains.In other words, each output electric power signal
Be by sensing device respectively according to a gain generate, corresponding to a posterior at least section surface sound wave the gain be greater than correspond to
The gain of preceding section surface sound wave, or the gain of at least one section posterior part output electric power signal are greater than preceding
One section part export electric power signal gain.
It is that dual-purpose increases wave number and gain to improve output electric power signal in another example of the invention.Either with
Which kind of mode improves output electric power signal, and the recess amplitude of depressed section caused by corresponding touching is also with being enhanced.
By foregoing manner, output electric power signal can be allowed to maintain when surface acoustic wave type touch control panel is not touched
In one preset range, and the recess amplitude of depressed section caused by accordingly touching is also with being raised to and can be detected
Amplitude is greater than a threshold limit value.
In the second embodiment of the present invention, it can be to transmit single hop surface acoustic wave, and the surface sound that will be received
Wave is converted into multistage part output electric power signal with multistage different gains, and each section of part output electric power signal is allowed to maintain
One close range.But in large scale surface acoustic wave type touch control panel, more subsequent signal may decay to the model for being difficult to detect
It encloses, therefore even if improving gain, possibly touching and touch position can not be detected by part output electric power signal.
In the third embodiment of the present invention, be detect corresponding to touching depressed section it is defeated across adjacent multistage part
Out when electric power signal, by transmitting a section surface sound wave again, and generate according to the surface acoustic wave received comprising depressed section
One section of output electric power signal, to accurately judge that out touch position.E.g. centroid position is calculated according to depressed section.
In summary, a kind of position detection method provided by the invention, please refers to shown in Fig. 4, is according to the present invention
The flow diagram of the detecting position of three embodiments.According to shown in step 410, generate a surface acoustic wave type touch control panel not by
Complete output electric power signal when touching, the complete output electric power signal are the differences according to multiple surface acoustic waves respectively
The multistage part output electric power signal set that part generates forms.Later, as shown at step 420, it generates and is touched in surface acoustic wave type
Control complete output electric power signal when panel is touched.Next, as shown in step 430, with it is not touched when it is complete defeated
Electric power signal compares out, each depressed section of complete output electric power signal when detecting is touched, wherein each is recessed
The sinking degree of concave portion point is greater than a threshold limit value.Next, as shown at step 440, distinguish according to each depressed section
Detect a position.Reach in addition, abovementioned steps 410 to 440 can be by control circuit.
It please refers to shown in Fig. 5 A and comparative diagram 3, exports electric power signal across part corresponding to the depressed section T1 of a touching
S1 and S2, if according to this depressed section calculate touching centroid position, part output electric power signal S2 on recess amplitude compared with
Greatly, it will cause centroid position and be biased to part output electric power signal S2.Therefore, as shown in Figure 5 B, judging depressed section T1's
When recess amplitude is greater than threshold limit value th, the surface acoustic wave of a corresponding wave number is provided on surface corresponding to the range of depressed section T1
It is transmitted on sound wave type touch panel, includes exporting electric power signal Sr corresponding to the part with the depressed section T2 touched to generate.
Due to being according to the output electric power signal generated with section surface sound wave, the centroid position judged can accurately show
Touch position.
In other words, abovementioned steps 410 to step 430 is can be considered as to carry out first stage detecting, and detecting
When any across multistage part of depressed section exports electric power signal, a second stage detecting is carried out, it is defeated to detect across multistage part
Position representated by electric power signal out.
Second stage detecting is the first stage depressed section generation according to each across multistage part output electric power signal
One section of second stage surface acoustic wave, and the surface acoustic wave generation one second stage output electric power signal that foundation receives, second
It is non-sawtooth wave that stage, which exports electric power signal,.Assuming that the depressed section detected in step 430 is first stage depressed section, often
One second stage output electric power signal is respectively corresponding to the first stage recessed portion of across a multistage part output electric power signal
Point, and a second stage depressed section can be presented in corresponding first stage depressed section.Position above-mentioned is according to second
Stage depressed section is detected.Also that is, according to aforementioned first stage depressed section is corresponded in second stage output electric power signal
Part detect position above-mentioned.
The wave number of second stage surface acoustic wave above-mentioned can be according to across multistage part output electric power signal accordingly
First stage depressed section generate, e.g. according to first stage depressed section institute across most the last period part export electric power signal
The wave number of corresponding surface acoustic wave, or according to first stage depressed section institute across final stage part output electric power signal phase
The wave number for the surface acoustic wave answered is also possible to both aforementioned be averaged.
The gain of second stage surface acoustic wave above-mentioned can be according to across multistage part output electric power signal accordingly
First stage depressed section generate, e.g. according to first stage depressed section institute across most the last period part export electric power signal
Corresponding gain, or according to first stage depressed section across final stage part export the corresponding gain of electric power signal,
It can be both aforementioned be averaged.
In the fourth embodiment of the present invention, be detect corresponding to touching depressed section it is defeated across adjacent multiple portions
Out when electric power signal, (it will contract within the scope of depressed section in the adjustment of at least one of rear or preceding part output electric power signal
Small or amplification), simulation becomes a continuous detecting waveform, with detecting touch position.Such as shown in Fig. 5 C, according to preceding part
The ratio r of the end signal of electric power signal and the initial signal of posterior part output electric power signal is exported, it is whole to reduce rear
Part export electric power signal.In one example of the present invention, it is with that when preceding part, output electric power signal, which has been reduced,
The initial signal of the end signal and posterior part output electric power signal of reduced preceding part output electric power signal
Ratio, it is whole to reduce posterior output electric power signal.There is the art the technical staff of usual knowledge can also deduce, can
Be according to posterior detection signal initial signal and it is preceding output electric power signal end signal ratio r, integrally put
Big preceding output electric power signal.Alternatively, it is also possible to be foundation ratio r, while adjusting in preceding and posterior output electric power signal.
In other words, in abovementioned steps 440, when the depressed section of each corresponding across multistage part output electric power signal is
First zoom in or out at least one section by depressed section across part output electric power signal after just carry out the detecting of position.
It is greater than with completely exporting the initial signal in rear part electric power signal in electric power signal in preceding part electric power signal
End signal for, the part to be amplified output electric power signal is according in complete output electric power signal when not touched
The initial signal and the desire of electric power signal are exported latter section of part corresponding to the part the to be amplified output electric power signal
The ratio of the end signal of the corresponding one section of part output electric power signal of part output electric power signal of amplification obtains amplifying.Separately
Outside, the part to be reduced output electric power signal is that foundation corresponds to the desire in complete output electric power signal when not touched
The part output electric power signal of diminution is defeated in the end signal of the last period part output electric power signal and the part to be reduced
The ratio of the initial signal of the corresponding one section of part output electric power signal of electric power signal obtains reducing out.
In the present invention, touch position be by taking centroid position as an example, but the art have usual knowledge technology people
Member can deduce that other calculate the mode of touch position, and details are not described herein by the present invention.
In addition, the detecting of depressed section above-mentioned can be complete output electric power signal when comparing not touched and be touched
Complete output electric power signal when touching is also possible to complete output electric power signal when directly detecting touched, and the present invention is not
It limits.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the method and technique content using the disclosure above make it is a little more
Equivalent embodiment that is dynamic or being modified to equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the present invention
Technical spirit any simple modification, equivalent change and modification to the above embodiments, still fall within technical solution of the present invention
In the range of.
Claims (20)
1. a kind of method of position detecting, it is characterised in that comprising:
One surface acoustic wave type touch control panel is provided；
Multistage surface acoustic wave is provided to transmit in the surface acoustic wave type touch control panel；
The surface acoustic wave in surface acoustic wave type touch control panel transmitting is received respectively；And
One section of part output electric power signal is provided according to the different piece of each section surface sound wave received respectively, it is complete to gather
Portion part, which exports electric power signal, becomes a complete output electric power signal.
2. the method for position detecting according to claim 1, it is characterised in that wherein in the complete output electric power signal
Rear part output electric power signal initial signal be greater than preceding part output electric power signal end signal.
3. the method for position detecting according to claim 1, it is characterised in that wherein rear in the multistage surface acoustic wave
A section surface sound wave wave number be greater than preceding section surface sound wave wave number.
4. the method for position detecting according to claim 1, it is characterised in that the wherein each section of part output electric energy
Signal is to generate respectively according to a gain, and the gain corresponding to posterior section surface sound wave is greater than corresponding to preceding one section
The gain of surface acoustic wave.
5. the method for position detecting according to claim 1, it is characterised in that the wherein each section of part output electric energy
Signal is all located in a preset range.
6. the method for position detecting according to claim 1, it is characterised in that the wherein surface acoustic wave type touch control panel
It is formulated for multistage detection area, each section of part output electric power signal is respectively corresponding to one section of detection area.
7. the method for position detecting according to claim 6, it is characterised in that wherein the multistage detection area includes edge
Surface acoustic wave type touch control panel vertical axis planning multistage detection area with along surface acoustic wave type touch control panel X direction planning
Multistage detection area.
8. the method for position detecting according to claim 1, it is characterised in that the wherein each section of part output electric energy
Signal is respectively corresponding to a time interval, wherein the time interval be with reference to the starting time for receiving the section surface sound wave or
The initial time of the section surface sound wave is provided.
9. the method for position detecting according to claim 1, it is characterised in that wherein the multistage surface acoustic wave includes just
Beginning direction of transfer is along the multistage surface acoustic wave of surface acoustic wave type touch control panel vertical axis and along surface acoustic wave type touch control panel horizontal axis
To multistage surface acoustic wave, and the surface acoustic wave received respectively include along surface acoustic wave type touch control panel vertical axis receive
Multistage surface acoustic wave with along the received multistage surface acoustic wave of surface acoustic wave type touch control panel X direction.
10. the method for position detecting according to claim 1, it is characterised in that wherein the complete output electric power signal exists
Saw-tooth wave type is presented when not touched in the surface acoustic wave type touch control panel.
11. a kind of device of position detecting, it is characterised in that comprising:
One surface acoustic wave type touch control panel, the echo area including being distributed in four side of surface acoustic wave type touch control panel are filled with a sensing
It sets, which includes:
One first longitudinal axis inverting element and one first horizontal axis inverting element provide multistage surface acoustic wave in the surface acoustic wave type respectively
Touch panel transmitting；
One second longitudinal axis inverting element and one second horizontal axis inverting element receive transmit in the surface acoustic wave type touch control panel respectively
Surface acoustic wave；And
One control circuit provides one section of part output electric energy letter according to the different piece of each section surface sound wave received respectively
Number, become a complete output electric power signal to gather all parts output electric power signal.
12. the device of position detecting according to claim 11, it is characterised in that the wherein complete output electric power signal
In rear part output electric power signal initial signal be greater than preceding part output electric power signal end signal.
13. the device of position detecting according to claim 11, it is characterised in that wherein in the multistage surface acoustic wave
The wave number of a section surface sound wave afterwards is greater than the wave number of preceding section surface sound wave.
14. the device of position detecting according to claim 11, it is characterised in that wherein each section of part exports electricity
Energy signal is generated respectively according to a gain by sensing device, and the gain corresponding to posterior section surface sound wave is greater than accordingly
In the gain of preceding section surface sound wave.
15. the device of position detecting according to claim 11, it is characterised in that wherein each section of part exports electricity
Energy signal is all located in a preset range.
16. the device of position detecting according to claim 11, it is characterised in that the wherein surface acoustic wave type touch surface
Plate is formulated for multistage detection area, and each section of part output electric power signal is respectively corresponding to one section of detection area.
17. the device of position detecting according to claim 16, it is characterised in that wherein the multistage detection area includes
Multistage detection area along the planning of surface acoustic wave type touch control panel vertical axis is planned with along surface acoustic wave type touch control panel X direction
Multistage detection area.
18. the device of position detecting according to claim 11, it is characterised in that wherein each section of part exports electricity
Energy signal is respectively corresponding to a time interval, wherein the time interval is with reference to the starting time for receiving the section surface sound wave
Or provide the initial time of the section surface sound wave.
19. the device of position detecting according to claim 11, it is characterised in that wherein the multistage surface acoustic wave includes
By first longitudinal axis inverting element provide initial direction of transfer along surface acoustic wave type touch control panel vertical axis multistage surface sound
The multistage surface acoustic wave along surface acoustic wave type touch control panel X direction that wave and the first horizontal axis inverting element provide, and it is described
Received surface acoustic wave includes received more along surface acoustic wave type touch control panel vertical axis by second longitudinal axis inverting element respectively
Section surface sound wave and the second horizontal axis inverting element are along the received multistage surface acoustic wave of surface acoustic wave type touch control panel X direction.
20. the device of position detecting according to claim 11, it is characterised in that the wherein complete output electric power signal
Saw-tooth wave type is presented when the surface acoustic wave type touch control panel is not touched.
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| CN201610004093.4A CN105677095B (en) | 2012-04-09 | 2012-04-09 | The method and apparatus of position detecting |
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| CN201610004093.4A CN105677095B (en) | 2012-04-09 | 2012-04-09 | The method and apparatus of position detecting |
| CN201210100527.2A CN103365494B (en) | 2012-04-09 | 2012-04-09 | The method and apparatus of position detecting |
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| CN201210100527.2A Division CN103365494B (en) | 2012-04-09 | 2012-04-09 | The method and apparatus of position detecting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082851A (en) * | 2006-05-31 | 2007-12-05 | 接触板系统股份有限公司 | Acoustic wave type touch panel |
| CN101373415A (en) * | 2007-08-21 | 2009-02-25 | 禾瑞亚科技股份有限公司 | Surface acoustic wave type sensing apparatus of touching control panel |
| US7629969B2 (en) * | 1996-08-12 | 2009-12-08 | Tyco Electronics Corporation | Acoustic condition sensor employing a plurality of mutually non-orthogonal waves |
| CN101882035A (en) * | 2009-05-04 | 2010-11-10 | 禾瑞亚科技股份有限公司 | Signal driving method of surface acoustic wave touch panel and device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4093308B2 (en) * | 2002-11-01 | 2008-06-04 | 富士通株式会社 | Touch panel device and contact position detection method |
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|---|---|---|---|---|
| US7629969B2 (en) * | 1996-08-12 | 2009-12-08 | Tyco Electronics Corporation | Acoustic condition sensor employing a plurality of mutually non-orthogonal waves |
| CN101082851A (en) * | 2006-05-31 | 2007-12-05 | 接触板系统股份有限公司 | Acoustic wave type touch panel |
| CN101373415A (en) * | 2007-08-21 | 2009-02-25 | 禾瑞亚科技股份有限公司 | Surface acoustic wave type sensing apparatus of touching control panel |
| CN101882035A (en) * | 2009-05-04 | 2010-11-10 | 禾瑞亚科技股份有限公司 | Signal driving method of surface acoustic wave touch panel and device thereof |
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