CN106354344B - The method and terminal device of touch location are detected in infrared touch panel - Google Patents
The method and terminal device of touch location are detected in infrared touch panel Download PDFInfo
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- CN106354344B CN106354344B CN201610824171.5A CN201610824171A CN106354344B CN 106354344 B CN106354344 B CN 106354344B CN 201610824171 A CN201610824171 A CN 201610824171A CN 106354344 B CN106354344 B CN 106354344B
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- optical path
- touch
- analog quantity
- occlusion area
- light intensity
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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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
Abstract
The present invention relates to methods and terminal device that touch location is detected in a kind of infrared touch panel, wherein the described method includes: detection touch screen presets the analog quantity light intensity value of each optical path on scanning direction；The touch occlusion area on default scanning direction is determined according to the analog quantity light intensity value of each optical path；The boundary for touching occlusion area is modified according to optical path width, amendment is obtained and touches occlusion area；And occlusion area is touched according to the amendment and determines the infrared touch position on touch screen.The present embodiment is modified the boundary for touching occlusion area by optical path width, it can be avoided influence or interference of the shade existing for the marginal position of touch point to occlusion area is touched on scanning optical path, occlusion area is more accurately touched so as to be calculated on default scanning direction, and then touch location is accurately positioned.
Description
Technical field
The present invention relates to method and ends that touch location is detected in technical field of touch control more particularly to a kind of infrared touch panel
End equipment.
Background technique
Infrared touch panel is with simple production process, production cost is low, easy for installation and high reliability obtains
It is widely applied.The basic structure of infrared touch panel includes touch screen and several infrared discharge lamps that touch screen surrounding is arranged in
Pipe and infrared receiver fluorescent tube, wherein infrared emission fluorescent tube and infrared receiver fluorescent tube correspond, and form infrared emission reception pipe pair,
The infrared receiver fluorescent tube that the infrared light that infrared emission fluorescent tube issues is located at opposite receives, when there is touch operation, by touching
The light of position will be blocked or weaken, and according to the Calculation of Optical Path being blocked or light weakens touch operation occurs for processor
Position.
As shown in Figure 1 be a rectangle infrared touch panel, the rectangle infrared touch panel include opposite two long sides and
Two short sides, by taking two long sides as an example, as shown in figure 1, be respectively set in the first long side 1 infrared emission fluorescent tube (11,12,13,14,
15,16,17,18 and 19), infrared receiver fluorescent tube (21,22,23,24,25,26,27,28 and are respectively set in the second long side 2
29), infrared emission fluorescent tube and infrared receiver fluorescent tube are arranged in a one-to-one correspondence.The infrared light that infrared emission fluorescent tube issues is by opposite side phase
The infrared receiver fluorescent tube answered receives, and forms an optical path, if the infrared light of the sending of infrared emission fluorescent tube 11 is by infrared receiver
Fluorescent tube 21 receives, and forms first optical path, other infrared emission fluorescent tubes and infrared receiver fluorescent tube sequentially form other corresponding light
Road, adjacent optical path slope is identical, and each group of infrared emission reception pipe to formed an optical path, with infrared receiver in each optical path
The infrared ray that fluorescent tube receives the transmitting of infrared emission fluorescent tube realizes the scanning of touch screen；As described above, infrared emission fluorescent tube is with same
Referred to as scanning direction when one slope is scanned, however each infrared emission fluorescent tube has multiple scanning directions (such as infrared
The infrared light that transmitting fluorescent tube 11 emits is received by infrared receiver fluorescent tube 22, and the infrared light that infrared emission fluorescent tube 12 emits is connect by infrared
Fluorescent tube 23 is received to receive, and so on, it is at this time another scanning direction).With infrared emission fluorescent tube 11 issue infrared light by
For the received scanning direction of infrared receiver fluorescent tube 21, optical path is put in order from big to small as infrared emission on the scanning direction
The optical path that fluorescent tube 11 and infrared receiver fluorescent tube 22 are formed to the optical path that infrared emission fluorescent tube 19 and infrared receiver fluorescent tube 29 are formed into
Row sequence, when there is touch operation, if touch point shelter from infrared emission fluorescent tube 13,14 and 15 and infrared receiver fluorescent tube 23,
The 24 and 25 continuous optical paths (dash area as shown in Figure 1) formed, then infrared emission fluorescent tube 13,14 and 15 and infrared receiver fluorescent tube
23, the 24 and 25 continuous optical paths formed are known as touching occlusion area, and first optical path is infrared emission in the touch occlusion area
Fluorescent tube 13 and the optical path of the formation of infrared receiver fluorescent tube 23, the last one optical path are infrared emission fluorescent tube 15 and infrared receiver fluorescent tube 25
The optical path of formation, the touch occlusion area are the position of touch point is blocked on Current Scan direction light in touch screen,
In turn, the touch occlusion area formed further according to the optical path that touch point on other scanning directions is blocked positions touch point.
But when positioning the touch occlusion area on each scanning direction, it is typically due to touch point edge
There are shade or light to interfere for position, will cause the partial region on the touch occlusion area two sides boundary on Current Scan direction without
Practical the case where touching, in turn results in so that the touch occlusion area of statistics is relatively fuzzyyer and generates biggish difference and touches position
Set can not precise positioning, there is situations such as gross error in calculated touch point coordinate.
Summary of the invention
To overcome the problems in correlation technique, the present invention provides the side that touch location is detected in a kind of infrared touch panel
Method and terminal device.
According to a first aspect of the embodiments of the present invention, a kind of method that touch location is detected in infrared touch panel, packet are provided
It includes:
Detect the analog quantity light intensity value that touch screen presets each optical path on scanning direction；
The touch occlusion area on default scanning direction is determined according to the analog quantity light intensity value of each optical path；
The boundary for touching occlusion area is modified according to optical path width, amendment is obtained and touches occlusion area；With
And
Occlusion area, which is touched, according to the amendment determines the infrared touch position on touch screen.
With reference to first aspect, in a first possible implementation of that first aspect, the mould according to each optical path
Analog quantity light intensity value detects the touch occlusion area of optical path on default scanning direction, comprising:
Judge whether the analog quantity light intensity value of each optical path is less than analog quantity Intensity threshold；
When the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold, determine that the analog quantity light intensity value is less than
The collection of the continuous optical path of analog quantity Intensity threshold is combined into the touch occlusion area.
With reference to first aspect, in a second possible implementation of that first aspect, it is described according to optical path width to described
The boundary for touching occlusion area is modified, comprising:
Judge whether the touch occlusion area on default scanning direction is the touch occlusion area comprising multiple touch points；
It is right respectively according to optical path width when the touch occlusion area is the touch occlusion area comprising multiple touch points
The corresponding boundary for touching occlusion area in each touch point is modified.
The possible implementation of second with reference to first aspect, in first aspect in the third possible implementation,
It is described to judge whether the touch occlusion area on default scanning direction is the touch occlusion area comprising multiple touch points, comprising:
According to the analog quantity light intensity value in the continuous optical path for touching occlusion area, by the analog quantity of continuous optical path
Light intensity value is in turn connected to form parabola；
Judge whether reversed parabolical number is greater than one in the parabola being in turn connected to form, wherein described reversed
The analog quantity light intensity value of parabola minimum point is less than the analog quantity light intensity value of the reversed parabola highest point；
When parabolical number reversed in the parabola being in turn connected to form is greater than one, determine on default scanning direction
Touch occlusion area be the touch occlusion area comprising multiple touch points, wherein the number of the touch point is described reversed
Parabolical number, the touch occlusion area of each touch point are first analog quantity light intensity value respective optical path in reversed parabola
Starting point to last analog quantity light intensity value respective optical path terminating point.
With reference to first aspect, in the 4th kind of possible implementation of first aspect, it is described according to optical path width to described
The boundary correcting process for touching occlusion area, obtaining amendment touch occlusion area includes:
The analog quantity light intensity a reference value that touch screen presets optical path on scanning direction is obtained, the analog quantity light intensity a reference value is
Do not occur analog quantity light intensity value when touch operation on touch screen；
According to the ratio and optical path width of the analog quantity light intensity value and analog quantity light intensity a reference value, the touch is corrected
The beginning boundary of occlusion area and termination boundary, obtain the amendment and touch occlusion area.
The 4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect,
The amendment beginning boundary for touching occlusion area and termination boundary, comprising:
According to the analog quantity light intensity value and mould of the initial light path position of touch occlusion area, optical path width and initial light path
The accurate beginning boundary for touching occlusion area is calculated, wherein the accurate starting in first ratio of analog quantity light intensity a reference value
Boundary is the product and the sum of the initial light path width starting point of the optical path width and the first ratio；
According to termination optical path position, optical path width and the analog quantity light intensity value and mould that terminate optical path for touching occlusion area
The accurate termination boundary for touching occlusion area is calculated, wherein the accurate termination in second ratio of analog quantity light intensity a reference value
Boundary is the difference of the product of the termination optical path width terminating point and the optical path width and the second ratio；Wherein, the touch
First optical path of occlusion area is initial light path, the last one optical path is to terminate optical path.
With reference to first aspect, in the 6th kind of possible implementation of first aspect, the method also includes:
It obtains the initial light path for touching occlusion area boundary position and terminates optical path, wherein the touch blocked area
First optical path in domain is initial light path, the last one optical path is to terminate optical path；
The touch occlusion area is subtracted adjacent with optical path is terminated far from the initial light path for touching occlusion area
Scan blind spot obtains pretreatment and touches occlusion area, wherein the scan blind spot is the center spacing and light of two neighboring fluorescent tube
The difference for degree of having a lot of social connections；And
It is modified according to the boundary that optical path width touches occlusion area to the pretreatment.
With reference to first aspect, in the 7th kind of possible implementation of first aspect, the default scanning of the detection touch screen
The analog quantity light intensity value of each optical path on direction, comprising:
According to the sequence of optical path from big to small or from small to large on default scanning direction, the analog quantity light in each optical path is acquired
Intensity values；
Judge whether the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold；
When the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold, determines and touched on the touch screen
Operation, and, the touch occlusion area on default scanning direction is determined according to the analog quantity light intensity value of each optical path.
With reference to first aspect, in the 8th kind of possible implementation of first aspect, the method also includes:
When not occurring touch operation on collection touch, on default scanning direction optical path analog quantity light intensity a reference value；
The analog quantity Intensity threshold is set according to the analog quantity light intensity a reference value, wherein the analog quantity light intensity threshold
Value is less than the analog quantity light intensity a reference value.
Second aspect according to embodiments of the present invention provides a kind of terminal device, including touch screen and setting in touch screen
The infrared emission fluorescent tube and infrared receiver fluorescent tube of surrounding, the terminal device further include:
For acquiring the intensity collection device of each optical path analog quantity light intensity value；And
The processor being electrically connected with the infrared receiver fluorescent tube, wherein the processor is configurable to for executing such as
Method described in first aspect.
The technical solution that the embodiment of the present invention provides can include the following benefits:
The method of touch location is detected in infrared touch panel provided in an embodiment of the present invention, comprising: detection touch screen is default
The analog quantity light intensity value of each optical path on scanning direction；It is determined on default scanning direction according to the analog quantity light intensity value of each optical path
Touch occlusion area；The boundary for touching occlusion area is modified according to optical path width, amendment touch is obtained and blocks
Region；And occlusion area is touched according to the amendment and determines the infrared touch position on touch screen.By presetting scanning direction
The analog quantity light intensity value of each optical path of upper detection determines initial touch occlusion area, is then blocked according to optical path width to touch
The boundary in region is modified to obtain amendment touch occlusion area, determines on touch screen to touch occlusion area according to amendment
Infrared touch position, can be avoided shade existing for the marginal position of touch point on scanning optical path to the influence for touching occlusion area or
Interference more accurately touches occlusion area so as to be calculated on default scanning direction, and then carries out to touch location
It is accurately positioned.
In addition, in the embodiment of the present invention, can by the way that the scan blind spot for touching occlusion area both sides of edges is subtracted in advance,
It obtains pretreatment and touches occlusion area, and then occlusion area is touched according to pretreatment and is modified processing, obtain more accurate
Amendment touches occlusion area, to effectively avoid scan blind spot to the influence for touching occlusion area is calculated, can block to touch
The accurate positioning in region improves the accuracy to touch location.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram for infrared touch panel that the prior art provides；
Fig. 2 is a kind of structural schematic diagram of infrared touch panel provided in an embodiment of the present invention；
Fig. 3 is the process signal for the method that touch location is detected in a kind of infrared touch panel provided in an embodiment of the present invention
Figure；
Fig. 4 is the detailed process schematic diagram of step S101 provided in an embodiment of the present invention；
Fig. 5 is another detailed process schematic diagram of step S101 provided in an embodiment of the present invention；
Fig. 6 is the detailed process schematic diagram of step S102 provided in an embodiment of the present invention；
Fig. 7 is a kind of detailed process schematic diagram of step S103 provided in an embodiment of the present invention；
Fig. 8 is the detailed process schematic diagram of step S1031 provided in an embodiment of the present invention；
Fig. 9 is the scene signal for the method that touch location is detected in a kind of infrared touch panel provided in an embodiment of the present invention
Figure；
Figure 10 is the correspondence provided in an embodiment of the present invention schematic diagram of a scenario shown in Fig. 8 for touching occlusion area；
Figure 11 is another detailed process schematic diagram of step S103 provided in an embodiment of the present invention；
Figure 12 is that the process for the method for detecting touch location in another infrared touch panel provided in an embodiment of the present invention is shown
It is intended to；
Figure 13 is a kind of hardware structural diagram of terminal device provided in an embodiment of the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 2 is a kind of structural schematic diagram of infrared touch panel shown according to an exemplary embodiment, the embodiment of the present invention
The method for detecting touch location in the infrared touch panel of offer is implemented by taking the infrared touch panel as an example.
As shown in Fig. 2, the infrared touch panel includes touch screen and several infrared discharge lamps that touch screen surrounding is arranged in
Pipe and infrared receiver fluorescent tube, wherein infrared emission fluorescent tube and infrared receiver fluorescent tube correspond, in embodiments of the present invention, with touching
For two long sides for touching screen, infrared receiver fluorescent tube is respectively set in one of long side, infrared hair is respectively set in another long side
Shot-light pipe, the infrared emission fluorescent tube and infrared receiver fluorescent tube are arranged in a one-to-one correspondence.As shown in Fig. 2, being respectively set in long side 10
Infrared transmitting tube 101,102,103,104,105,106,107,108 and 109, be respectively set in long side 20 infrared receiving tube 201,
202,203,204,205,206,207,208 and 209, wherein with infrared discharge lamps in the infrared touch panel of the embodiment of the present invention
Pipe 101 is realized infrared perpendicular to long edge emitting infrared light and by the scanning direction that infrared receiver fluorescent tube 201 receives infrared light
Scanning, wherein infrared emission fluorescent tube 101 and infrared receiver fluorescent tube 201 form an optical path, other infrared emission fluorescent tubes and infrared
It receives fluorescent tube and sequentially forms optical path, to be carried out according to the optical path that touched point on the scanning direction stops to infrared touch position
Positioning.
Wherein, in embodiments of the present invention, infrared receiver fluorescent tube and infrared emission fluorescent tube are uniformly arranged on the side of touch screen
From referred to as lamp spacing, distance is set as D for edge, two adjacent infrared receiver fluorescent tubes or infrared discharge lamps tube center distance, and one group
The width of the optical path formed between infrared receiver fluorescent tube and infrared emission fluorescent tube is set as d, due to the infrared receiver of discrete arrangement
There is interval between fluorescent tube or infrared emission fluorescent tube, therefore, the lamp space D of two fluorescent tubes would generally be slightly larger than optical path width d,
Difference i.e. between lamp space D and optical path width d is greater than zero, so, it can be generated between two adjacent optical paths certain blind
Area can be referred to as scan blind spot, and the spacing of scan blind spot is D-d.
In embodiments of the present invention, it is detected in the infrared touch panel that above-mentioned infrared touch panel provides according to embodiments of the present invention
The method of touch location is to touch location, specifically, the embodiment in relation to this method can be found in following embodiment.
It is shown in Figure 3, it is the method that touch location is detected in infrared touch panel provided in an embodiment of the present invention, this method
Applied in infrared touch panel described in above-mentioned Fig. 2.This method may include steps of.
In step s101, detection touch screen presets the analog quantity light intensity value of each optical path on scanning direction.
Generally may include multiple scanning directions in touch screen, can respectively to optical path corresponding on multiple scanning directions into
The acquisition of row analog quantity light intensity value can preset a scanning direction, such as described in Fig. 2 in embodiments of the present invention
Infrared emission fluorescent tube 101 perpendicular to touch screen long side 10 scanning direction carry out infrared light transmitting, thus by infrared receiver
Fluorescent tube 201 receives infrared light and realizes scanning, can be according to default scanning when detecting the analog quantity light intensity value of each optical path of touch screen
On direction, the sequence (side i.e. perpendicular to optical path direction from left to right or from right to left of each optical path from big to small or from small to large
To) detected.
When detecting the analog quantity light intensity value of each optical path, in step s 102, according to the analog quantity light of each optical path
Intensity values determine the touch occlusion area on default scanning direction.
In embodiments of the present invention, occlusion area is touched i.e. when there is touch operation, positioned at the default scanning direction of touch screen
On the set of optical path blocked of touch point.It can be determined according to the analog quantity light intensity value of each optical path and touch occlusion area, for example,
When the analog quantity light intensity value of each optical path of detection is respectively less than analog quantity Intensity threshold when no touch operates on touch screen,
It has been regarded as touch operation generation, has touched occlusion area so that it is determined that determining according to analog quantity light intensity value.
When determining the touch occlusion area on default scanning direction, in step s 103, according to optical path width to described
The boundary for touching occlusion area is modified, and is obtained amendment and is touched occlusion area.
In embodiments of the present invention, the touch point marginal position on touch screen causes to examine also due to block optical path
The analog quantity light intensity value at the optical path edge of survey will receive influence, accordingly it is desirable to by repairing to the boundary for touching occlusion area
Just, wherein the boundary for touching occlusion area is the marginal position far from the optical path for touching occlusion area, specific implementation process
In, the boundary for touching occlusion area two sides can be modified by optical path width, as subtracted far from occlusion area is touched
The partial region of optical path both sides of the edge obtains revised amendment and touches occlusion area.
Wherein, in embodiments of the present invention, the analog quantity light that touch screen presets optical path on scanning direction can be obtained in advance
Strong a reference value, the analog quantity light intensity a reference value are the analog quantity light intensity value of optical path when not occurring touch operation on touch screen.
Thus according to the ratio and optical path width of analog quantity light intensity value and analog quantity light intensity a reference value, to the boundary for touching occlusion area
It is modified, obtains amendment and touch occlusion area.
When obtaining amendment touch occlusion area, in step S104, occlusion area is touched according to the amendment and determines touching
Touch the infrared touch position on screen.
In embodiments of the present invention, the amendment that can be determined according to above-mentioned steps S101 to step S103 touches occlusion area
And occlusion area is touched by implementing the amendment obtained according to above-mentioned steps S101 to S103 step on other scanning directions, both
The infrared touch position on touch screen can be determined, for example, the amendment that multiple scanning directions obtain, which touches occlusion area, carries out weight
Overlapping positions are taken after conjunction, that is, can determine infrared touch position, and specific embodiment is no longer described in detail herein.
Using method provided in an embodiment of the present invention, by the analog quantity light intensity for presetting each optical path detected on scanning direction
Value determines initial touch occlusion area, is then modified and is corrected to the boundary for touching occlusion area according to optical path width
Occlusion area is touched, so that touching occlusion area according to amendment determines the infrared touch position on touch screen, can be avoided scanning
Influence or interference of the shade existing for the marginal position of touch point to occlusion area is touched, default so as to be calculated in optical path
Occlusion area is more accurately touched on scanning direction, and then touch location is accurately positioned.
On the basis of above-mentioned Fig. 3, the embodiment of the invention also discloses the detailed process schematic diagrames of step S101, such as scheme
Shown in 4, step S101 may include following steps:
In step S1011, according to the sequence of optical path from big to small or from small to large on default scanning direction, each light is acquired
The analog quantity light intensity value of road.
Due to being parallel to each other between each optical path, the sequence for presetting optical path on scanning direction is usually according to light
The sequence of road from big to small or from small to large is ranked up, and the Sort Direction of the optical path size generally refers to sweep perpendicular to default
Retouch direction and according to the direction sequentially formed from left to right or from right to left, it is such as shown in Figure 2, optical path can be preset
From big to small be ordered as first optical path that infrared emission fluorescent tube 101 and infrared receiver fluorescent tube 201 are formed to infrared discharge lamps
The sequence for the last one optical path that pipe 109 and infrared receiver fluorescent tube 209 are formed, the sequence of optical path from small to large are opposite.To root
According to the sequence of optical path, the analog quantity light intensity value of each optical path is acquired respectively.
When collecting the analog quantity light intensity value in each optical path, in step S1012, the analog quantity light of optical path is judged
Whether intensity values are less than analog quantity Intensity threshold.Otherwise, step S1011 is continued to execute.
In embodiments of the present invention, the analog quantity Intensity threshold is the light for judging whether to occur on touch screen touch operation
Intensity values, the analog quantity Intensity threshold can power on the light intensity value when operation of rear no touch for touch screen, when step S1011 is acquired
Optical path analog quantity light intensity value be less than analog quantity Intensity threshold when, that is, can determine occur touch operation on touch screen；But when
When the analog quantity Intensity threshold can power on light intensity value when rear no touch operates for touch screen, due to being influenced by ordinary ray
Either other objects (such as manpower) on the touchscreen side it is mobile and without the touch screen is actually touched in the case where, then can lead
The analog quantity light intensity value of optical path on touch screen is caused to change, so as to cause maloperation；Therefore, in embodiments of the present invention, will
Touch screen powers on the light intensity value acquired when the operation of rear no touch and is recorded as analog quantity light intensity a reference value, the analog quantity Intensity threshold
Less than the analog quantity light intensity a reference value, for example, when the analog quantity light intensity a reference value of acquisition is 100, then the analog quantity light
Strong threshold value can be set to 80, as long as the analog quantity light intensity value in the optical path of step S1011 acquisition can be judged as hair less than 80
Raw touch operation, avoids maloperation from generating.
When the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold, in step S1013, the touching is determined
It touches on screen and touch operation occurs.
In embodiments of the present invention, when the analog quantity light intensity value in the optical path of acquisition is less than analog quantity Intensity threshold, then
Determination has thing to shut out the light, therefore, it is determined that there is touch operation on touch screen, and according to each optical path analog quantity light intensity value
Determine the touch occlusion area on default scanning direction.
In relation to the setting to analog quantity Intensity threshold, reference can be made to shown in Fig. 5, for related simulation provided in an embodiment of the present invention
The flow diagram for measuring Intensity threshold setting, as shown in figure 5, this method may include steps of:
When not occurring touch operation in step S1014, on collection touch, on default scanning direction optical path analog quantity
Light intensity a reference value.
In embodiment disclosed by the invention, the acquisition of analog quantity light intensity a reference value can be adopted previously according to different touch screens
Collection is primary, for example, passing through the simulation of each optical path of processor collection touch of touch screen when touch screen first powers on
Light intensity value is measured as analog quantity light intensity a reference value.Further, since the environment that touch screen may use every time is different, for example, touching
Screen is under outdoor intense light irradiation and indoor non-illuminated conditions, when not occurring the analog quantity light intensity value of optical path when touch operation on touch screen
Different from, so, in the specific implementation process, it can also need every time using touch screen, when touch screen first powers on
When, start the analog quantity light intensity value of optical path under no touch operation, on default scanning direction on collection touch as analog quantity light
Strong a reference value, to avoid later data processing when caused by perplex.
In step S1015, the analog quantity Intensity threshold is arranged according to the analog quantity light intensity a reference value.
It, can basis after acquiring the analog quantity light intensity a reference value of optical path on default scanning direction in step S1014
Analog quantity Intensity threshold is arranged in the analog quantity light intensity a reference value, and analog quantity Intensity threshold is less than the analog quantity light intensity benchmark
Value, under normal circumstances, the analog quantity Intensity threshold can be less than 10-15 brightness value of analog quantity light intensity a reference value, for example,
When the analog quantity light intensity a reference value of acquisition is 100, then analog quantity Intensity threshold can be set as 85.
It, can be according to the sequence of optical path to each optical path on touch screen using the above method provided in an embodiment of the present invention
The acquisition of analog quantity light intensity value is carried out, thus judge whether touch operation occur according to the size of the analog quantity light intensity value of acquisition,
And then determine that touch of the touch location under default scanning direction is blocked according to the analog quantity light intensity value of acquisition convenient for step S102
Region.
It is shown in Figure 6, it is the detailed process schematic diagram of step S102 in the embodiment of the present invention, as shown in fig. 6, step
S102 includes the following steps.
In step S1021, judge whether the analog quantity light intensity value of each optical path is less than analog quantity Intensity threshold.
According to the analog quantity light intensity value of each optical path on the default scanning direction of step S101 detection acquisition and preset
Analog quantity Intensity threshold, to judge size between the two, according to the analog quantity light intensity value of each optical path and analog quantity light intensity threshold
The size of value, which determines, touches occlusion area.
When the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold, in step S1022, the mould is determined
The collection that analog quantity light intensity value is less than the continuous optical path of analog quantity Intensity threshold is combined into the touch occlusion area.Otherwise, it determines touching
No touch operates in screen, terminates process.
Since the optical path width in touch screen is relatively narrow, when there is touch operation generation, light that single touch point can block
Number amount all can be relatively more, if the optical path number that the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold can all be more than or equal to
2, when analog quantity light intensity value is less than analog quantity Intensity threshold, then it needs to be determined that analog quantity light intensity value is less than analog quantity Intensity threshold
Continuous optical path position, so that it is determined that the set of continuous optical path is to touch occlusion area.Certainly, in implementation process, one
The quantity of the touch occlusion area occurred in a touch screen is not only one, can be judged according to the number of touch point.
Using method provided in an embodiment of the present invention, can be less than according to analog quantity light intensity value analog quantity light intensity and it is continuous
The set of optical path, which determines, touches occlusion area, avoids because event occurs for infrared emission fluorescent tube or infrared receiver fluorescent tube on single light path
When barrier the analog quantity light intensity value of single light path occurs still less than analog quantity Intensity threshold, single light path is determined to touch occlusion area
Caused by maloperation, thus effectively improve to touch occlusion area identification efficiency and identification accuracy.
In embodiments of the present invention, under normal circumstances, a touch occlusion area is that a touch point generates, still,
When two touch point neighbor distances relatively when, then be likely to cause in step S102 determine touch occlusion area in include
There are two the presence of even three touch points, and therefore, in order to guarantee the generation of maloperation, the embodiment of the invention also provides following
Embodiment.
It is shown in Figure 7, the process for touching occlusion area progress preliminary treatment is illustrated to be provided in an embodiment of the present invention
Figure, as shown in fig. 7, this method may comprise steps of.
In step S1031, judge whether the touch occlusion area on default scanning direction is comprising multiple touch points
Touch occlusion area.
When the gap between touch points two adjacent on touch screen is smaller, it is possible that two touch points are default
All optical paths blocked on scanning direction primarily determine as continuous optical path, that is, a touch occlusion area are formed, in order to touch
The accurate positioning of position needs to be respectively divided, accomplish as different touch occlusion areas to touching occlusion area, to need to sentence
Whether the touch occlusion area determined in disconnected step S102 includes multiple touch points.
When the touch occlusion area is the touch occlusion area comprising multiple touch points, in step S1032, according to
The boundary for touching occlusion area corresponding to each touch point is modified optical path width respectively.Otherwise, only to current procedures
The boundary for the touch occlusion area that S102 is obtained is modified processing, executes step S103.
In embodiments of the present invention, optical path width can be in two fluorescent tubes (infrared emission fluorescent tube or infrared receiver fluorescent tube)
Between spacing between position due to there is gap between continuous two infrared emission fluorescent tubes or infrared receiver fluorescent tube, make certainly
Will appear between two fluorescent tubes optical path scanning less than scan blind spot, i.e., the center spacing of two fluorescent tubes generally can be slightly larger than single
Group infrared emission reception pipe is to the optical path width for forming optical path, then optical path width is the center spacing and scanning between two fluorescent tubes
The difference of blind area width.Simultaneously as during the scanning process, the optical path for touching the two sides boundary position of occlusion area is touch point
Marginal position, the optical path close to optical path edge are typically due to touch point edge effect generation, and therefore, it is necessary to pass through optical path width
The edge of the optical path is modified, to more accurately be touched occlusion area.
For how whether the touch scanning area in judgment step S102 is the touch blocked area comprising multiple touch points
Domain, reference can be made to Fig. 8.As shown in figure 8, step S1021 can include the following steps in detail.
It, will be continuous according to the analog quantity light intensity value in the continuous optical path for touching occlusion area in step S10311
The analog quantity light intensity value of optical path is in turn connected to form parabola.
Due to the analog quantity light intensity value difference for the optical path that each touch point is blocked on the touchscreen, so, it can basis
The size of the analog quantity light intensity value of each optical path in occlusion area is touched, mathematically by the size of analog quantity light intensity value
It is equivalent to a mathematics histogram, parabola is in turn connected to form according to the size of analog quantity light intensity value, thus according to parabola
It determines and touches whether occlusion area includes multiple touch points.
In step S10312, judge whether reversed parabolical number is greater than one in the parabola being in turn connected to form
It is a.
In the specific implementation process, the variation of touch point analog quantity light intensity value of continuous optical path in touch screen is in anti-
To parabola shaped, i.e., the analog quantity light intensity value of continuous optical path is in small-big-small variation, i.e. a touch point corresponds to analog quantity light
It is reversed parabola that intensity values, which connect the parabola to be formed, and the analog quantity light intensity value of the reversed parabola minimum point is less than described
The analog quantity light intensity value of reversed parabola highest point.It therefore, can be according to the reversed parabola for connecting formation in step S10311
Number determine the number of touch point.
When parabolical number reversed in the parabola being in turn connected to form is greater than one, in step S10313, really
Surely the touch occlusion area on default scanning direction is the touch occlusion area comprising multiple touch points.Otherwise, step is executed
S10314 determines that the touch occlusion area on default scanning direction is the touch occlusion area comprising a touch point.
In embodiment disclosed by the invention, the number of the touch point is the reversed parabolical number, each touching
The touch occlusion area touched a little is the starting point of first analog quantity light intensity value respective optical path in reversed parabola to last one
The terminating point of analog quantity light intensity value respective optical path, wherein the starting point of optical path be along optical path from big to small or from small to large
Far from the edge for touching occlusion area in upper first optical path that sort, the terminating point of optical path is i.e. along optical path from big to small or from small
Far from the edge for touching occlusion area in the last one optical path on to big sequence.
It in the specific implementation process, can be respectively referring to the touch screen under concrete application scene described in attached drawing 9 to Figure 10
Structural schematic diagram.
As described in Figure 9, by taking infrared emission fluorescent tube and infrared receiver fluorescent tube is arranged in two long sides of touch screen as an example, work as touch
When occurring two continuous touch points on screen and forming a continuous touch occlusion area, then continuous light in occlusion area is touched
Shown in the analog quantity light intensity value of the road region A, B, C, D, E and F as shown in Figure 9, shade height mark simulation in each region
The size of light intensity value is measured, shadow region is higher, and mark analog quantity light intensity value is bigger, and therefore, the analog quantity light intensity value being formed continuously can
Two continuous reversed parabolas are formed with connection.Therefore, which includes two touch points, and each touch point
It presets the touch occlusion area on scanning direction corresponding two touch screening shown in Fig. 10 can be obtained after correcting process at this
Keep off region A1 and A2.
In embodiment disclosed by the invention, the obtained touch occlusion area of step S102 and step S1032 are obtained
Touch occlusion area be the corresponding touch occlusion area in single touch point, due to the two sides boundary of the touch occlusion area
General touch point edge effect causes marginal position fuzzy and excess edge occur, therefore, the embodiment of the present invention propose to upper
It states touch area and carries out precisely modified embodiment.The specific description that can be found in embodiment illustrated in fig. 11.
It is shown in Figure 11, the detailed process schematic diagram of step S103.As shown in figure 11, this method may include walking as follows
Suddenly.
In step S1033, the analog quantity light intensity a reference value that touch screen presets optical path on scanning direction is obtained.
The analog quantity light intensity a reference value is when not occurring touch operation on touch screen, on default scanning direction optical path mould
Analog quantity light intensity value can acquire the simulation of each optical path when touch screen first powers in the specific implementation process in advance
Measuring light intensity value can be direct when needing to compare the analog quantity light intensity value of step S101 detection as analog quantity light intensity a reference value
Obtain the analog quantity light intensity a reference value.
When getting the analog quantity light intensity a reference value, in step S1034, according to the analog quantity light intensity value and mould
The ratio and optical path width of analog quantity light intensity a reference value correct the beginning boundary for touching occlusion area and terminate boundary, obtains
Occlusion area is touched to the amendment.
In embodiment disclosed by the invention, touching occlusion area includes beginning boundary and termination boundary, described initial line
Boundary is the starting point boundary for touching first optical path in occlusion area, and the termination boundary is to touch the last one in occlusion area
The terminating point boundary of optical path, thus according to the ratio and optical path width of analog quantity light intensity value and analog quantity light intensity a reference value to institute
It states beginning boundary and terminates boundary and be modified, obtain revised touch occlusion area, i.e., the described amendment touches occlusion area.
In the specific implementation process, can be referring to shown in Fig. 9 to Figure 10, optical path width d, between two fluorescent tube middle positions
Spacing be D, and optical path width d is less than D, i.e. has certain scan blind spot between two optical paths.It is acquired in step S101
When having touch operation in touch screen, actual analog quantity light intensity value is set as t1 in first optical path, real in the last one optical path
The analog quantity light intensity value on border is set as t2, and the analog quantity light intensity a reference value of preset first optical path is t1 ', presets
The analog quantity light intensity a reference value of the last one optical path be t2 ' then the analog quantity light intensity value of first optical path and analog quantity light intensity base
First ratio of quasi- value is set as Ps1=t1/t1 ', the analog quantity light intensity value and analog quantity light intensity a reference value of the last one optical path
The second ratio be set as Ps2=t2/t2 '.When calculating the beginning boundary for touching occlusion area and terminating boundary, reference can be made to such as
Lower embodiment.Wherein,
According to the analog quantity light intensity value and mould of the initial light path position of touch occlusion area, optical path width and initial light path
The accurate beginning boundary for touching occlusion area is calculated in first ratio of analog quantity light intensity a reference value, i.e., in touch occlusion area
The accurate beginning boundary of first optical path, wherein the accurate beginning boundary is the product of the optical path width and the first ratio
The sum of with the initial light path width starting point.Wherein, first optical path for touching occlusion area is initial light path.Touch
The accurate beginning boundary for touching occlusion area is first optical path width starting point+d*Ps1 of S1=, wherein first optical path width
Starting point is in first optical path far from the marginal position for touching occlusion area.
According to termination optical path position, optical path width and the analog quantity light intensity value and mould that terminate optical path for touching occlusion area
The accurate termination boundary for touching occlusion area is calculated, wherein the accurate termination in second ratio of analog quantity light intensity a reference value
Boundary is the difference of the product of the termination optical path width terminating point and the optical path width and the second ratio；Wherein, the touch
The last one optical path of occlusion area is to terminate optical path.The last one described optical path width terminating point is in the last one optical path
Far from the marginal position for touching occlusion area.The accurate termination boundary of the touch occlusion area is the last one optical path width of S2=
Starting point+d* (1-Ps2), wherein the last one optical path width starting point is in the last one optical path close to touch blocked area
The marginal position in domain.Therefore, it is described according to above-mentioned embodiment, it is the area that S1 to S2 is formed which, which touches occlusion area,
Domain.
It, being capable of the simulation when there is touch operation by optical path width and optical path using method provided in an embodiment of the present invention
The ratio of analog quantity light intensity a reference value, is finally calculated and touches accurately rising for occlusion area when measuring light intensity value and no touch operation
Initial line circle terminates boundary with accurate, so that obtaining the amendment touches occlusion area, realizes and hides to touch obtained in step S102
The amendment for keeping off region, obtains accurately touching occlusion area, convenient for the positioning of touch location in touch screen.
In the specific implementation process, between due to existing between continuous two infrared emission fluorescent tubes or infrared receiver fluorescent tube
Gap, and the center spacing of two fluorescent tubes generally can slightly larger than single group infrared emission reception pipe to formed optical path optical path width, from
And can repeat between two continuous fluorescent tubes with the scan blind spot that the covering of no pipeline or light intensity are extremely low, so that calculating
During touching occlusion area, usually the touch occlusion area calculated can be caused inaccurate because of the scan blind spot is ignored, into
And lead to a possibility that inaccurate to touch location.In order to avoid the problem for causing touch location inaccurate, this hair
Bright embodiment also provides following implementation, and for details, reference can be made to the descriptions to Figure 12.
It is shown in Figure 12, it is the side that touch location is detected in another infrared touch panel provided in an embodiment of the present invention
The detailed process schematic diagram of method.As shown in figure 12, this method may include steps of:
In step s 201, detection touch screen presets the analog quantity light intensity value of each optical path on scanning direction.
When on touch screen if there is touch operation, it is red that optical path corresponding infrared receiver fluorescent tube in part can not then receive correspondence
The infrared light of outer emission lamp pipe can then be sent to processor one and block signal, judge whether to block by processor, and by
Corresponding intensity collection device acquires the analog quantity light intensity value in each optical path.As described in step S201 and above embodiment
Step S101 it is identical, specific embodiment can no longer elaborate herein referring to above-described embodiment.
When detecting the analog quantity light intensity value of each optical path, in step S202, according to the analog quantity light of each optical path
Intensity values determine the touch occlusion area on default scanning direction.
In embodiment disclosed by the invention, can according to the analog quantity light intensity value of each optical path detected in step S201 with
The size of analog quantity Intensity threshold judges the touch occlusion area on default scanning direction, and touches occlusion area and generally simulate
Measure the set that light intensity value is less than the continuous optical path of analog quantity Intensity threshold.And the touch occlusion area packet in the step S202
Include scan blind spot.
When determining the touch occlusion area, in step S203, the touch occlusion area boundary position is obtained
Initial light path and termination optical path.
In embodiment disclosed by the invention, first optical path for touching occlusion area is initial light path, last
A optical path is to terminate optical path, thus according to the ranking and searching in the touch occlusion area according to optical path from big to small or from small to large
First optical path and the last one optical path, so that it is determined that initial light path and termination optical path.
When getting initial light path and terminating optical path, in step S204, the touch occlusion area is subtracted separate
The initial light path for the touching occlusion area scan blind spot adjacent with optical path is terminated, obtains pretreatment and touches occlusion area.
In embodiment disclosed by the invention, the scan blind spot is the center spacing and optical path width of two neighboring fluorescent tube
Difference therefore according to the center spacing of two neighboring fluorescent tube and the size of optical path width, determine the size of the scan blind spot, from
And the scan blind spot of initial light path and termination optical path will be individually subtracted in the touchs occlusion area determined in step S203, it both can be with
It obtains the pretreatment and touches occlusion area, the pretreatment touches occlusion area and do not include initial light path and terminate remote in optical path
From the scan blind spot for touching occlusion area.
When obtaining the pretreatment touch occlusion area, in step S205, according to optical path width to the pretreatment
The boundary for touching occlusion area is modified, and is obtained amendment and is touched occlusion area.
In embodiments of the present invention, above-mentioned Figure 10 and Figure 11 the embodiment described mode is referred to touch pretreatment
The boundary of occlusion area is modified, so that obtaining amendment touches occlusion area, specific embodiment can be referring to above-mentioned phase
Embodiment is closed, is no longer elaborated herein.
When obtaining the amendment touch occlusion area, in step S206, it is true that occlusion area is touched according to the amendment
Determine the infrared touch position on touch screen.
In embodiments of the present invention, the amendment that can be determined according to above-mentioned steps S201 to step S205 touches occlusion area
And occlusion area is touched by implementing the amendment obtained according to above-mentioned steps S201 to S205 step on other scanning directions, both
The infrared touch position on touch screen can be determined, for example, the amendment that multiple scanning directions obtain, which touches occlusion area, carries out weight
Overlapping positions are taken after conjunction, that is, can determine infrared touch position, and specific embodiment is no longer described in detail herein.
In addition, in embodiments of the present invention, the embodiment of each step can be found in the describing mode of above embodiment,
It no longer elaborates herein.
It, can be by the way that obtained touch blocked area will be handled in advance by using method described in the embodiments of the present invention
Domain subtracts the scan blind spot for touching occlusion area both sides of the edge, obtains pretreatment and touches occlusion area, in turn, according to the pretreatment
Touch occlusion area is further modified processing to pretreatment touch occlusion area according to optical path width and is corrected accordingly
Occlusion area is touched, is touched in occlusion area both sides of the edge so as to effectively remove because scan blind spot is to touch location
When influence, effectively improve the accurate positioning to occlusion area is touched, and then obtain accurate touch location.
It is shown in Figure 13, it is a kind of hardware structural diagram of terminal device, as shown, the terminal device includes touching
Touch screen 1301, the infrared emission fluorescent tube 1302 that 1301 surrounding of touch screen is set and infrared receiver fluorescent tube 1303, with it is described
The processor 1304 and intensity collection device 1305 that infrared receiver fluorescent tube 1303 is electrically connected.
Wherein, in the present invention is implemented, the touch screen 1301, infrared emission fluorescent tube 1302 and infrared receiver fluorescent tube 1303
It is identical as infrared touch panel shown in Fig. 2 in above embodiment, it no longer elaborates herein.The intensity collection device 1305 is used
The analog quantity light intensity value of each optical path in collection touch 1301, the intensity collection device 1305 can be set and the touch screen
On 1301, moved by longitudinal direction along the touch screen 1301 or short side direction, to obtain optical path on each scanning direction
Analog quantity light intensity value, the processor 1304 is used to execute the method for above-mentioned related detection touch location in infrared touch panel
Related embodiment.Specifically no longer elaborate herein.
Those skilled in the art will readily occur to of the invention its after considering specification and the disclosure invented here of practice
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (9)
1. detecting the method for touch location in a kind of infrared touch panel characterized by comprising
Detect the analog quantity light intensity value that touch screen presets each optical path on scanning direction；
The touch occlusion area on default scanning direction is determined according to the analog quantity light intensity value of each optical path；
The boundary for touching occlusion area is modified according to optical path width, amendment is obtained and touches occlusion area；And
Occlusion area, which is touched, according to the amendment determines the infrared touch position on touch screen；Wherein,
It is described according to optical path width to it is described touch occlusion area boundary correcting process, obtain amendment touch occlusion area packet
It includes:
The analog quantity light intensity a reference value that touch screen presets optical path on scanning direction is obtained, the analog quantity light intensity a reference value is to touch
Do not occur analog quantity light intensity value when touch operation on screen；
According to the ratio and optical path width of the analog quantity light intensity value and analog quantity light intensity a reference value, corrects the touch and block
The beginning boundary in region and termination boundary, obtain the amendment and touch occlusion area.
2. the method according to claim 1, wherein described detect according to the analog quantity light intensity value of each optical path
The touch occlusion area of optical path on default scanning direction, comprising:
Judge whether the analog quantity light intensity value of each optical path is less than analog quantity Intensity threshold；
When the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold, determine that the analog quantity light intensity value is less than simulation
The collection for measuring the continuous optical path of Intensity threshold is combined into the touch occlusion area.
3. the method according to claim 1, wherein described touch occlusion area to described according to optical path width
Boundary is modified, comprising:
Judge whether the touch occlusion area on default scanning direction is the touch occlusion area comprising multiple touch points；
When the touch occlusion area is the touch occlusion area comprising multiple touch points, according to optical path width respectively to each
The corresponding boundary for touching occlusion area in touch point is modified.
4. according to the method described in claim 3, it is characterized in that, the touch occlusion area judged on default scanning direction
It whether is the touch occlusion area comprising multiple touch points, comprising:
According to the analog quantity light intensity value in the continuous optical path for touching occlusion area, by the analog quantity light intensity of continuous optical path
Value is in turn connected to form parabola；
Judge whether reversed parabolical number is greater than one in the parabola being in turn connected to form, wherein the reversed parabolic
The analog quantity light intensity value of line minimum point is less than the analog quantity light intensity value of the reversed parabola highest point；
When parabolical number reversed in the parabola being in turn connected to form is greater than one, the touching on default scanning direction is determined
Touching occlusion area is the touch occlusion area comprising multiple touch points, wherein the number of the touch point is the reversed parabolic
The number of line, each touch point touch that occlusion area is first analog quantity light intensity value respective optical path in reversed parabola
Terminating point of the initial point to last analog quantity light intensity value respective optical path.
5. the method according to claim 1, wherein it is described amendment it is described touch occlusion area beginning boundary and
Terminate boundary, comprising:
According to the analog quantity light intensity value and analog quantity of the initial light path position of touch occlusion area, optical path width and initial light path
The accurate beginning boundary for touching occlusion area is calculated, wherein the accurate beginning boundary in first ratio of light intensity a reference value
For the sum of the product of the optical path width and the first ratio and the initial light path width starting point；
According to termination optical path position, optical path width and the analog quantity light intensity value and analog quantity that terminate optical path for touching occlusion area
The accurate termination boundary for touching occlusion area is calculated, wherein the accurate termination boundary in second ratio of light intensity a reference value
For the difference of the product of the termination optical path width terminating point and the optical path width and the second ratio；Wherein, the touch is blocked
First optical path in region is initial light path, the last one optical path is to terminate optical path.
6. the method according to claim 1, wherein the method also includes:
It obtains the initial light path for touching occlusion area boundary position and terminates optical path, wherein the touch occlusion area
First optical path is initial light path, the last one optical path is to terminate optical path；
The touch occlusion area is subtracted to the scanning adjacent with optical path is terminated far from the initial light path for touching occlusion area
Blind area obtains pretreatment and touches occlusion area, wherein the scan blind spot is wide for the center spacing and optical path of two neighboring fluorescent tube
The difference of degree；And
It is modified according to the boundary that optical path width touches occlusion area to the pretreatment.
7. the method according to claim 1, wherein the detection touch screen presets each optical path on scanning direction
Analog quantity light intensity value, comprising:
According to the sequence of optical path from big to small or from small to large on default scanning direction, the analog quantity light intensity in each optical path is acquired
Value；
Judge whether the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold；
When the analog quantity light intensity value of optical path is less than analog quantity Intensity threshold, determines and occur touching behaviour on the touch screen
Make, and, the touch occlusion area on default scanning direction is determined according to the analog quantity light intensity value of each optical path.
8. the method according to claim 1, wherein the method also includes:
When not occurring touch operation on collection touch, on default scanning direction optical path analog quantity light intensity a reference value；
The analog quantity Intensity threshold is set according to the analog quantity light intensity a reference value, wherein the analog quantity Intensity threshold is small
In the analog quantity light intensity a reference value.
9. a kind of terminal device, including touch screen and the infrared emission fluorescent tube and infrared receiver lamp of touch screen surrounding be set
Pipe, which is characterized in that further include:
For acquiring the intensity collection device of each optical path analog quantity light intensity value；And
The processor being electrically connected with the infrared receiver fluorescent tube, wherein the processor is configurable to for executing such as right
It is required that any method of 1-8.
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| CN108414145B (en) * | 2018-01-10 | 2020-07-14 | 广州市地狗灵机环境监测有限公司 | Balancing detection method and equipment based on rolling ball |
| CN109002215B (en) * | 2018-07-27 | 2021-03-19 | 青岛海信移动通信技术股份有限公司 | Method for determining touch initial position of terminal with touch screen and terminal |
| CN110275645B (en) * | 2019-06-12 | 2022-08-05 | 青岛海信商用显示股份有限公司 | Touch point identification method, touch point identification device, storage medium and touch device |
| CN110968222B (en) * | 2019-12-13 | 2024-02-06 | 深圳市康冠商用科技有限公司 | Infrared touch screen tracking scanning method and device, electronic equipment and storage medium |
| CN111475060B (en) * | 2020-06-01 | 2023-10-27 | 青岛海信商用显示股份有限公司 | Touch identification method and device |
| CN112445380B (en) * | 2020-12-08 | 2022-04-01 | 安徽鸿程光电有限公司 | Infrared touch control method, device and all-in-one machine |
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