CN104731417A - Optical path scanning and configuring method and device for touch screen - Google Patents
Optical path scanning and configuring method and device for touch screen Download PDFInfo
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- CN104731417A CN104731417A CN201510119811.8A CN201510119811A CN104731417A CN 104731417 A CN104731417 A CN 104731417A CN 201510119811 A CN201510119811 A CN 201510119811A CN 104731417 A CN104731417 A CN 104731417A
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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
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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Abstract
The embodiment of the invention discloses an optical path scanning and configuring method and device for a touch screen. The method comprises the steps that each optical path formed by luminescence of each radiated element in the touch screen and the effective optical path intensity are obtained, and the optical path is the line traveled by light from one radiated element to a receiving element of the touch screen; a scanning optical path is selected for each touch sub-region of the touch screen from the obtained optical paths, the scanning optical paths of the touch sub-regions pass through the touch sub-regions and the effective optical path intensity is larger than a preset optical intensity threshold valve, and a touch region of the touch screen is divided into the multiple touch sub-regions; the scanning optical path of each radiated element is configured according to the scanning optical path selected for each touch sub-region. A scanning optical network obtained in this way has no blind region, misjudgment is prevented from occurring when true and false touch point judgment is performed in the scanning optical network, and the judgment accuracy rate is improved.
Description
Technical field
The present invention relates to touch screen technology field, particularly relate to a kind of light path scanning collocation method and device of touch-screen.
Background technology
Infrared touch panel is an electronic system that existence and the position touched in viewing area can be detected, which simplify man-machine interaction method.The rectangular structure of existing a kind of infrared touch panel, as shown in Figure 1, is made up of a long transmitting side, long reception limit, a short transmitting side and a short receptor limit.Transmitting side has some radiated elements, receives on limit and have some receiving elements, wherein, the radiated element of long transmitting side is oppositely arranged one by one with the long receiving element receiving limit, and the radiated element of short transmitting side and the receiving element on short receptor limit are oppositely arranged one by one.
The light path scanning process of infrared touch panel refers to, the radiated element triggered successively in transmitting side is luminous, and only allows one of them radiated element luminous at every turn, when each radiated element is luminous, is received by least one predetermined receiving element.Wherein, the light that radiated element in transmitting side is launched, if receive by receiving the receiving element that limit is oppositely arranged with this radiated element, the light path formed is main shaft light path, if received by other receiving elements on this reception limit, the light path formed is from axial light path, and direction corresponding to these light paths is direction of scanning.The angle that main shaft light path can be arrived in direction of scanning represents, such as, the direction of scanning of main shaft light path is 0 degree, and the angle from axial light path and main shaft light path is θ, should be so θ from the direction of scanning of axial light path.For a radiated element, direction of scanning can be set by setting the light path choosing which receiving element corresponding, setting direction of scanning number by the number setting receiving element.Each radiated element corresponding direction of scanning number is all identical with direction of scanning, two direction of scanning as shown in Figure 2 a and 2 b, and wherein, shown in Fig. 2 a is direction of scanning corresponding to main shaft light path, and shown in Fig. 2 b is from direction of scanning corresponding to axial light path.Trigger each radiated element successively according to predetermined order luminous, received by receiving element, the light path that record is formed, obtain the scan light net of one-period, as shown in Figure 3.
The position that there is touch point and touch point is judged whether according to the different shape of above-mentioned scan light net under touch and non-touch situation, concrete implementation is: in touch area, when not touching, the receiving element corresponding with radiated element can receive light, when having touch, the main shaft light path of radiated element is cut off, and corresponding receiving element can not receive light, utilize the sequence number of receiving element and/or radiated element to identify the position of touch point, to utilize the sequence number of receiving element to identify the position of touch point, with the long limit that receives for X-axis, with short receptor limit for Y-axis, if there is a touch point M in touch area, according to scan light net, the long sequence number receiving the receiving element that main shaft light path is cut off on limit of record is the sequence number of the receiving element that on a and short receptor limit, main shaft light path is cut off is b, obtaining touch point after so combining the sequence number of receiving element in the position of touch area is (a, b), if there are two touch point M and N in touch area, but according to scan light net, the long sequence number receiving the receiving element that main shaft light path is cut off on limit of record is a and c, on record short receptor limit, the sequence number of the receiving element that main shaft light path is cut off is b and d, the position of the accurate touch point obtained after so the sequence number of receiving element being combined is (a, b), (c, d), (a, d) with (c, b), wherein (a, d) with (c, b) be combine the false touch point obtained, need to be removed, ghost point is removed from axial light path by usual utilization, choose from axial light path can be the receiving element adjacent or neighbouring with the receiving element that main shaft light path is cut off corresponding from axial light path, if be cut off from axial light path, illustrate that this accurate touch point is true touch point, if be not cut off from axial light path, illustrate that this accurate touch point is false touch point.
For above-mentioned rectangular infrared touch panel or the touch-screen identical with the light path scan mode of infrared touch panel and touch point judgment mode, carry out in the process of light path scanning, at the edge (as shown in Figure 2 b) of touch area because of not corresponding with receiving element radiated element, receiving element can not receive light, therefore be also considered to light path be cut off, occur scan blind spot.In this scan light net, carry out true and false touch point when judging, the light path that easily caused blind area is cut off and is touched the light path caused and cuts off and obscure, and easily causes judging by accident.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of light path scanning collocation method and device of touch-screen, for solving following technical matters: each radiated element corresponding direction of scanning number is all identical with direction of scanning, carry out light path and scan the scan light net obtained, easily cause true and false touch point to be judged by accident.
The object of the embodiment of the present invention is achieved through the following technical solutions:
A light path scanning collocation method for touch-screen, comprising:
The effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch-screen is formed and described every bar light path, light path refers to the circuit that light is walked from the receiving element that a radiated element arrives touch-screen;
For each touch subregion of described touch-screen chooses scanning optical path from the light path obtained, the scanning optical path of touch subregion is through described touch subregion and effective optical path intensity is greater than default Intensity threshold, and the touch area of described touch-screen is divided into multiple touch subregion;
According to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.
A light path scanning inking device for touch-screen, comprising:
Light path intensity acquisition module, for: the effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch-screen is formed and described every bar light path, light path refers to the circuit that light is walked from the receiving element that a radiated element arrives touch-screen;
Scanning optical path chooses module, for: for each touch subregion of described touch-screen chooses scanning optical path from the light path obtained, the scanning optical path of touch subregion is through described touch subregion and effective optical path intensity is greater than default Intensity threshold, and the touch area of described touch-screen is divided into multiple touch subregion;
Scanning optical path configuration module, for: according to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.
The beneficial effect of the embodiment of the present invention is as follows:
In the embodiment of the present invention: every bar light path that each radiated element luminescence obtaining touch-screen is formed and every bar light path effective optical path intensity, for each touch subregion of touch-screen is chosen through one's respective area from the light path of the touch area of touch-screen and effective optical path intensity is greater than the light path of default Intensity threshold from the light path obtained, according to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.Compared with the scan mode that the direction of scanning corresponding with existing each radiated element is all identical, in guarantee under the scanning optical path of each touch subregion meets the prerequisite of predetermined condition, be respectively each radiated element determination scanning optical path.Because the scanning optical path of each touch subregion is by choosing acquisition, therefore the scan light net obtained is scanned in this manner, can not blind area be there is, carry out avoiding when true and false touch point judges in this scan light net occurring erroneous judgement, improve the accuracy rate of judgement.
Accompanying drawing explanation
Fig. 1 is a kind of infrared touching screen structure of the prior art;
Fig. 2 a is the direction of scanning that in the infrared touch panel of rectangular configuration, main shaft light path is corresponding;
Fig. 2 b is direction of scanning corresponding from axial light path in the infrared touch panel of rectangular configuration;
Fig. 3 is the scan light net that in prior art, a kind of scan mode obtains;
The light path scanning collocation method process flow diagram of the first touch-screen that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 is the schematic diagram that the installation site of radiated element and receiving element is biased or installation direction is biased;
Fig. 6 is the schematic diagram that the luminous site of radiated element is biased;
The light path scanning collocation method process flow diagram of the second touch-screen that Fig. 7 provides for the embodiment of the present invention;
Fig. 8 is the light path weakness zone schematic diagram of the scan light net that in prior art, a kind of scan mode obtains;
The light path scanning collocation method process flow diagram of the third touch-screen that Fig. 9 provides for the embodiment of the present invention;
The light path scanning collocation method process flow diagram of the 4th kind of touch-screen that Figure 10 provides for the embodiment of the present invention;
The light path scanning inking device schematic diagram of a kind of touch-screen that Figure 11 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the light path scanning collocation method of a kind of touch-screen provided by the invention and device are illustrated in greater detail.
Embodiments provide a kind of light path scanning collocation method of touch-screen, as shown in Figure 4, specific implementation step is as follows:
Step 410: the effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch-screen is formed and every bar light path, light path refers to the circuit that light is walked from the receiving element that a radiated element arrives touch-screen.
Step 420: for each touch subregion of touch-screen chooses scanning optical path from the light path obtained, the scanning optical path of touch subregion is through this touch subregion and effective optical path intensity is greater than default Intensity threshold, and the touch area of infrared touch panel is divided into multiple touch subregion.
Wherein, default Intensity threshold sets according to actual needs, and for example, according to demand, default Intensity threshold can be set as 15mcd, 30mcd, 45mcd or other values.Light intensity in reality can also be characterized by the magnitude of voltage at light receiving element place.
In this step, can for each touch subregion of touch-screen chooses scanning optical path from the whole light paths obtained, also according to the corresponding relation touching subregion and radiated element, scanning optical path can be chosen from the light path that the radiated element luminescence corresponding with touching subregion obtained is formed.The light path that the light that wherein corresponding with touching subregion radiated element is transmitting is formed is through the radiated element of this touch subregion.
Step 430: according to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.
Wherein, the scanning optical path configured for each radiated element comprises the angle of configuration direction of scanning number and direction of scanning.
In the embodiment of the present invention: the effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch machine screen is formed and every bar light path, for each touch subregion of touch-screen is chosen through one's respective area from the light path of the touch area of touch-screen and effective optical path intensity is greater than the light path of default Intensity threshold from the light path obtained, according to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.Compared with the scan mode that the direction of scanning corresponding with existing each radiated element is all identical, in guarantee under the scanning optical path of each touch subregion meets the prerequisite of predetermined condition, be respectively each radiated element determination scanning optical path.Therefore scan the scan light net obtained in this manner, can not blind area be there is, carry out avoiding when true and false touch point judges in this scan light net occurring erroneous judgement, improve the accuracy rate of judgement.
In addition, in actual production, the situation that radiated element/receiving element installation site is biased or installation direction is biased may be there is, as shown in Figure 5, wherein, radiated element 1 and receiving element 1 are not mounted opposite, and radiated element 2 and receiving element 2 are not mounted opposite yet, and the luminous site of some radiated element possible also can be biased, as shown in Figure 6.Under these circumstances, such as, the diffusion angle of light beam is sent according to radiated element, determine that the light that i-th radiated element sends is received by the i-th-m to the i-th+m receiving element, when the luminous site of this radiated element is biased, radiated element/receiving element installation site is biased or installation direction is biased, the light that may make to only have the i-th-m-1 wherein to the i-th+m receiving element to receive this radiated element i to send, cause omission 1 light path, and the light path of this omission correspond to the i-th+m+1 the receiving element be not selected.Wherein, i and m is positive integer.In above-described embodiment, for each radiated element, choose all receiving elements and receive the light that each radiated element sends, obtain the effective optical path intensity receiving light path corresponding to the receiving element of light, instead of choose a part of receiving element for each radiated element and receive the light that sends of radiated element, avoid because the luminous site of radiated element is biased, radiated element/receiving element installation site is biased or installation direction is biased and holiday light path.Allow to produce and certain error is installed, improve production efficiency.
In above-mentioned steps 420, from the light path obtained for each touch subregion of touch-screen choose scanning optical path time, as shown in Figure 7, its concrete implementation can be:
Step 710: determine the first candidate scan light path set for each touch subregion from the light path obtained, this first candidate scan light path set touches subregion by process and all light paths that effective optical path intensity is greater than default Intensity threshold are formed.
Step 720: choose scanning optical path from this first candidate scan light path set, wherein, the ratio of the whole light path numbers in this scan light way and this first candidate scan light path set is in preset range.
Wherein, the preset range of the ratio of the whole scan light ways in the scan light way chosen from this first candidate scan light path set and this first candidate scan light path set sets according to actual needs.
Because the scan mode scanning according to configuration obtains scan light net, when carrying out the location determination of touch point, light path density larger (namely light path number is more), the light path intersected is more, more accurate to the location determination of touch point.In the embodiment of the present invention, by from the light path obtained for each touch subregion is determined by the first candidate scan light path set formed through this touch subregion and all light paths that effective optical path intensity is greater than default Intensity threshold, according to preset range from wherein choosing scanning optical path, ensure that each touch subregion has enough scan light ways.Compared with the scan light net that all identical scan mode in the direction of scanning corresponding with each radiated element existing shown in Fig. 8 obtains, according to the scan light net that the scan mode of this configuration obtains, there will not be scanning optical path weakness zone.Therefore, avoid and carry out touch point when judging, the problem that the position deviation of the touch point judged according to scanning optical path weakness zone is large, further increase the accuracy rate of judgement.
Wherein, step 720: choose scanning optical path from this first candidate scan light path set, its implementation has multiple, exemplifies wherein two kinds below, as shown in Figure 9, the first implementation idiographic flow of step 720 is as follows:
Step 910: choose light path from the first candidate scan light path set of each touch subregion, form the second candidate scan light path set, until the ratio of the light path number in the second candidate scan light path set and the whole light path numbers in the first candidate scan light path set is greater than or equal to the first preset percentage.
In this step, optionally, for each touch subregion choose the second candidate scan light path set time, from the first candidate scan light path set touching subregion, choose light path successively, be greater than or equal to the first preset percentage once the light path number chosen with the ratio of whole light path numbers of the first scanning optical path set of touch subregion and just stop choosing.
Wherein, the first preset percentage sets according to actual needs, and optionally, the span of the first preset percentage is [70%, 80%].
Step 920: union is got in the second candidate scan light path set of all touch subregions, forms the first area candidate scan light path set of the touch area of touch-screen.
Step 930: from the candidate scan light path set of first area for each touch subregion choose light path, form the 3rd candidate scan light path set touching subregion, the 3rd candidate scan light path set comprises the light path of all this touch of process subregions in the candidate scan light path set of first area.
Step 940: if there is at least one ratio touching the scan light way in the 3rd candidate scan light path set of subregion and the whole light path numbers in the first candidate scan light path set to be greater than the second preset percentage, from this, at least one touches the 3rd candidate scan light path set of subregion and removes light path, and same optical path (i.e. the light path of above-mentioned removal) is removed from the 3rd candidate scan light path set of other touch subregions of the light path process removed, until the ratio of the scan light way in the 3rd candidate scan light path set of all touch subregions and the whole light path numbers in the first candidate scan light path set is all greater than or equal to the first preset percentage, and be less than or equal to the second preset percentage, light path in the 3rd final candidate scan light path set is the scanning optical path touching subregion.
In this step, if at least one touches the 3rd candidate scan light path set of subregion and removes one article of alternative removal light path from this, and from remove this article of alternative removal light path through other touch subregions the 3rd candidate scan light path set remove this article of alternative removal light path after, still can ensure that the scan light way removed in the 3rd candidate scan light path set of the touch subregion after light path is greater than or equal to the first preset percentage with the ratio of the whole light path numbers in the first candidate scan light path set, just using this alternative removal light path as removing light path.
For each touch subregion, the light path touched in the second candidate scan light path set of subregion because of other also can pass through this touch subregion, union is got in second candidate scan light path set of all touch subregions, after forming first area candidate scan light path set, obtain in the 3rd candidate scan light path set of each touch subregion according to first area candidate scan light path set, some ratio touching the scan light way in the 3rd candidate scan light path set of subregion and the whole light path numbers in the first candidate scan light path set may be there is and be greater than the second preset percentage, visible, this is preset the second number percent and is greater than above-mentioned first preset percentage.Above-mentioned steps 940 is for removing redundancy light path, make the ratio of the whole light path numbers in the scan light way in the 3rd candidate scan light path set of all touch subregions and the first candidate scan light path set all be greater than or equal to the first preset percentage, and be less than or equal to the second preset percentage.
Wherein, the second preset percentage threshold value sets according to actual needs, and optionally, the span of the second preset percentage is [80%, 90%].
In the embodiment of the present invention, from by through touching the first candidate scan light path set that subregion and all light paths that effective optical path intensity is greater than default Intensity threshold form, when choosing light path, choose a part as the second candidate scan light path set, the ratio of the whole light path numbers in the light path number in the second candidate scan light path set and the first candidate scan light path set is made to be greater than the first preset percentage threshold value, decrease light path number, improve treatment effeciency, and union is got in the second candidate scan light path set of all touch subregions, after forming the first area candidate scan light path set of the touch area of touch-screen, obtain the 3rd candidate scan light path set of each touch subregion, if there is at least one ratio touching the scan light way in the 3rd candidate scan light path set of subregion and the whole light path numbers in the first candidate scan light path set to be greater than the second preset percentage, touch the described 3rd candidate scan light path set of subregion from least one and remove light path, and same optical path is removed from the 3rd candidate scan light path set of other touch subregions of the light path process removed, until the ratio of the scan light way in the 3rd candidate scan light path set of all touch subregions and the whole light path numbers in the first candidate scan light path set is less than or equal to the second preset percentage.Eliminate the light path of redundancy in the manner described above, decrease scan light way, improve treatment effeciency, and the above-mentioned ratio of every sub-touch area is within the scope of preset percentage, makes the local light direction density of scan light net even.
The first implementation of above-mentioned steps 720 is that the mode by choosing light path realizes, and also can be realized by the mode removing light path, its implementation as shown in Figure 10:
Step 1010: union is got in the first candidate scan light path set of all touch subregions, forms the second area candidate scan light path set of the touch area of touch-screen.
Step 1020: choose light path for each touch subregion from the set of second area candidate scan light path, form the 4th candidate scan light path set touching subregion, the 4th candidate scan light path set comprises the light path of all this touch of process subregions in the set of second area candidate scan light path.
Step 1030: remove from the set of second area candidate scan light path and/or add light path, again the 4th candidate scan light path set of each touch subregion is obtained, until the ratio of the scan light way in the 4th candidate scan light path set of all touch subregions and the whole light path numbers in the first candidate scan light path set is greater than or equal to the first preset percentage, and being less than or equal to the second preset percentage, the light path in the 4th final candidate scan light path set is the scanning optical path touching subregion.
Wherein, the first preset percentage and the second preset percentage set according to actual needs, and this is preset the second number percent and is greater than the first preset percentage.Optionally, the first span presetting percentage is [70%, 80%], and the span of the second preset percentage is [80%, 90%].
Because light path angle is larger, when carrying out true and false touch point and judging, the ability removing false touch point is stronger, optionally, in above-mentioned steps 910, from the first candidate scan light path set of each touch subregion, choose light path, when forming the second candidate scan light path set, from the first candidate scan light path set, choose light path successively according to light path angle order from big to small, form the second candidate scan light path set.In above-mentioned steps 940 and step 1030, when removing light path, remove light path according to light path angle order from small to large, further increase the accuracy rate of judgement.Certainly, in step 1030, when adding light path, also light path can be added according to light path angle order from big to small.
Wherein, light path angle is the angle of light path relative main light path.
Above in all embodiments, the touch area of touch-screen is divided into multiple touch subregion, when dividing touch subregion, can divide with reference to touch accuracy requirement, usual touch accuracy requirement scope is generally 1.5 millimeters ~ 3 millimeters, the touch accuracy requirement that the touch accuracy requirement of 1.5 millimeters is greater than 3 millimeters.Such as, touching accuracy requirement is 1.5 millimeters, so arrange the size touching subregion according to this touch accuracy requirement, such as, touch-screen is rectangular configuration, touch subregion is rectangular area, the length touching subregion can be set to 1.5 millimeters, and the touch area of touch-screen be divided into a length/1.5 millimeter region unit of touch area, further, using touch area wide/number of region unit as touching the wide of subregion, just can obtain the size of touch subregion.Can ensure like this to touch subregion in the regional extent of the touch accuracy requirement of touch-screen, for such touch subregion chooses scanning optical path, the accuracy rate of judgement can be improved further.Touch accuracy requirement higher, the touch subregion of division is more, and the touch subregion divided the touch area of touch-screen is more, and the scanning optical path chosen more is conducive to improving the accuracy rate judged.Therefore, the touch subregion number of division can be greater than or equal to number corresponding to the highest touch accuracy requirement.So, accordingly, the range of size touching subregion is the size being less than or equal to touch subregion corresponding to the highest touch accuracy requirement.
Optionally, in above all embodiments, touch-screen is rectangular configuration, can certainly be the touch-screen of other shapes.
Optionally, in above all embodiments, touch subregion is rectangular area, can certainly be the region of other shape.
Scanning collocation method according to the light path of above-described touch-screen is that touch-screen carries out configuring when light path scans and can be and power on first time the opportunity configured, and also can be that other opportunity before dispatching from the factory is pre-configured.Light path scanning can be carried out according to the scan mode configured after having configured, in the scan light net then obtained under this light path scan mode, carry out the judgement of true and false touch point and some location determination etc.Illustrate in further detail with the light path scanning collocation method of a specific embodiment to a kind of touch-screen that the embodiment of the present invention provides below.
According to the length of the highest touch accuracy requirement and rectangular configuration touch-screen, length/the highest touch the accuracy requirement the touch area of touch-screen being divided into touch-screen touches subregion, each touch subregion is rectangular area, and the length touching subregion is the highest touch accuracy requirement; Effective optical path intensity T is set, the first preset percentage P and the second preset percentage Q is set.
Optionally, the span of P is [70%, 80%], and the span of Q is [80%, 90%].
To each touch subregion, trigger all radiated elements successively luminous, travel through all receiving elements, when process i-th radiated element, trigger this radiated element, choose all receiving elements and receive the light that i-th radiated element send, obtain the effective optical path intensity of every bar light path corresponding to the receiving element that receives light and every bar light path.If the light path obtained is through this touch subregion and effective optical path intensity is greater than T, record this light path to mate with this touch subregion, and record the angle (light path angle) of this light path main shaft light path corresponding with radiated element, obtain the first candidate scan light path set touching subregion.
To each touch subregion, according to light path angle order from big to small from the first candidate scan light path set to choose through this touch subregion and effective optical path intensity is greater than the light path of T, just stops choosing until the ratio of whole light path numbers that this touch of the process subregion chosen and effective optical path intensity are greater than in the light path number of T and the first candidate scan light path set is greater than or equal to P, obtain the second candidate scan light path set of touch subregion.
Union is got in second candidate scan light path set of all touch subregions, form the first area candidate scan light path set of the touch area of touch-screen, the 3rd candidate's light path scanning set of each touch subregion is obtained according to first area candidate scan light path set, be now the ratio that each touch subregion calculates the scan light way in the 3rd candidate's light path scanning set and the whole light path numbers in above-mentioned first candidate scan light path set, if there is at least one this ratio touching subregion corresponding to be greater than Q, then: the 3rd candidate scan according to light path angle order at least one touch subregion from this from small to large, remove one article of alternative removal light path, and same optical path is removed from the 3rd candidate scan light path set of other touch subregions of the light path process removed, calculate the ratio of the scan light way in the 3rd candidate's light path scanning set of the touch subregion after now removing this article of alternative removal light path and the whole light path numbers in the first candidate scan light path set, if this ratio is still greater than or equal to P, this alternative removal light path is removed as removal light path, until the ratio of the scan light way in the 3rd candidate's light path scanning set of all touch subregions and the whole light path numbers in the first candidate scan light path set is all greater than or equal to P, and be less than or equal to Q, light path in the 3rd final candidate scan light path set is the scanning optical path touching subregion.
According to the scanning optical path chosen for each touch subregion, configure scanning side's light path of each radiated element, comprise the direction of scanning number and direction of scanning angle that configure each radiated element.Concrete, according to the scanning optical path chosen for each touch subregion, be the receiving element that each radiated element configuration is corresponding with the scanning optical path chosen.
After completing the configuration of above-mentioned light path direction of scanning when touch-screen first time powers on, just periodically can scan according to the direction of scanning of each radiated element of configuration later, obtain scan light net.
For each scan period: carry out true and false touch point according to scan light net and judge and touch point location determination, obtain the information of touch point; Carry out touch point track following level and smooth, the coordinate conversion of touch point in touch area is become the displaing coordinate of touch-screen and export.
It should be pointed out that in above all embodiments, touch-screen can be, but not limited to infrared touch panel.
Based on same inventive concept, the embodiment of the present invention provides a kind of light path scanning inking device of touch-screen, as shown in figure 11, comprising: light path intensity acquisition module 1101, scanning optical path choose module 1102 and scanning optical path configuration module 1103.
Light path intensity acquisition module 1101, for: the effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch-screen is formed and every bar light path, light path refers to the circuit that light is walked from the receiving element that a radiated element arrives infrared touch panel;
Scanning optical path chooses module 1102, for: for each touch subregion of touch-screen chooses scanning optical path from the light path obtained, the scanning optical path of touch subregion is through this touch subregion and effective optical path intensity is greater than default Intensity threshold, and the touch area of touch-screen is divided into multiple touch subregion.
Scanning optical path configuration module 1103, for: according to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.
Optionally, scanning optical path choose module 1102 specifically for: from obtain light path determine the first candidate scan light path set for each touch subregion, this first candidate scan light path set by through touch subregion and all light paths that effective optical path intensity is greater than default Intensity threshold form.From this first candidate scan light path set, choose scanning optical path, wherein, the ratio of the whole light path numbers in this scan light way and this first candidate scan light path set is in preset range.
Optionally, scanning optical path choose module 1102 specifically for: from the first candidate scan light path set of each touch subregion, choose light path, form the second candidate scan light path set, until the ratio of the light path number in the second candidate scan light path combination and the whole light path numbers in the first candidate scan light path set is greater than or equal to the first preset percentage.Union is got in second candidate scan light path set of all touch subregions, forms the first area candidate scan light path set of the touch area of touch-screen.Light path is chosen for each touch subregion from the candidate scan light path set of first area, form the 3rd candidate scan light path set touching subregion, the 3rd candidate scan light path set comprises the light path of all this touch of process subregions in the candidate scan light path set of first area.If there is at least one ratio touching the scan light way in the 3rd candidate scan light path set of subregion and the whole light path numbers in the first candidate scan light path set to be greater than the second preset percentage, from this, at least one touches the 3rd candidate scan light path set of subregion and removes light path, and same optical path is removed from the 3rd candidate scan light path set of other touch subregions of the light path process removed, until the ratio of the scan light way in the 3rd candidate scan light path set of all touch subregions and the whole light path numbers in the first candidate scan light path set is all greater than or equal to the first preset percentage, and be less than or equal to the second preset percentage, light path in the 3rd final candidate scan light path set is the scanning optical path touching subregion.
Optionally, scanning optical path choose module 1102 specifically for: union is got in the first candidate scan light path set of all touch subregions, forms the second area candidate scan light path set of touch area of touch-screen.Light path is chosen for each touch subregion from the set of second area candidate scan light path, form the 4th candidate scan light path set touching subregion, the 4th candidate scan light path set comprises the light path of all this touch of process subregions in the set of second area candidate scan light path.Remove from the set of second area candidate scan light path and/or add light path, again the 4th candidate scan light path set of each touch subregion is obtained, until the ratio of the scan light way in the 4th candidate scan light path set of all touch subregions and the whole light path numbers in the first candidate scan light path set is greater than or equal to the first preset percentage, and being less than or equal to the second preset percentage, the light path in the 3rd final candidate scan light path set is the scanning optical path touching subregion.
Optionally, light path is chosen from the first candidate scan light path set of each touch subregion, when forming the second candidate scan light path set, scanning optical path choose module 1102 specifically for: from the first candidate scan light path set, choose scanning optical path successively according to light path angle order from big to small, form the second candidate scan light path set.
Optionally, when removing light path, scanning optical path choose module 1102 specifically for: remove light path according to light path angle order from small to large.
Optionally, in above all embodiments, the range of size touching subregion is the size being less than or equal to touch subregion corresponding to the highest touch accuracy requirement.
Optionally, in above all embodiments, infrared touch panel is rectangular configuration.
Optionally, in above all embodiments, described touch subregion is rectangular area.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and switching to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the switching of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if of the present invention these switch and modification belongs within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a light path scanning collocation method for touch-screen, is characterized in that, comprising:
The effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch-screen is formed and described every bar light path, light path refers to the circuit that light is walked from the receiving element that a radiated element arrives touch-screen;
For each touch subregion of described touch-screen chooses scanning optical path from the light path obtained, the scanning optical path of touch subregion is through described touch subregion and effective optical path intensity is greater than default Intensity threshold, and the touch area of described touch-screen is divided into multiple touch subregion;
According to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.
2. method according to claim 1, is characterized in that, for each touch subregion of described touch-screen chooses scanning optical path from the light path obtained, comprising:
From obtain light path determine the first candidate scan light path set for each touch subregion, described first candidate scan light path set by through described touch subregion and all light paths that effective optical path intensity is greater than default Intensity threshold form;
From described first candidate scan light path set, choose scanning optical path, wherein, the ratio of the whole light path numbers in described scan light way and described first candidate scan light path set is in preset range.
3. method according to claim 2, is characterized in that, chooses scanning optical path, comprising from described first candidate scan light path set:
Light path is chosen from the first candidate scan light path set of each touch subregion, form the second candidate scan light path set, until the ratio of the light path number in described second candidate scan light path set and the whole light path numbers in the first candidate scan light path set is greater than or equal to the first preset percentage;
Union is got in the described second candidate scan light path set of all touch subregions, forms first area candidate's light path set of the touch area of described touch-screen;
Light path is chosen for each described touch subregion from the candidate's light path set of described first area, form the 3rd candidate scan light path set of described touch subregion, described 3rd candidate scan light path set comprises the light path of all this touch of process subregions in the candidate's light path set of described first area;
If there is at least one ratio touching the scan light way in the described 3rd candidate scan light path set of subregion and the whole light path numbers in described first candidate scan light path set to be greater than the second preset percentage, light path is removed from the described 3rd candidate scan light path set of at least one touch subregion described, and same optical path is removed from the described 3rd candidate scan light path set of other touch subregions of the light path process removed, until the ratio of the scan light way in the described 3rd candidate scan light path set of all touch subregions and the whole light path numbers in described first candidate scan light path set is all greater than or equal to the first preset percentage, and be less than or equal to the second preset percentage, light path in the 3rd final candidate scan light path set is the scanning optical path touching subregion.
4. method according to claim 2, is characterized in that, chooses scanning optical path, comprising from described first candidate scan light path set:
Union is got in the described first candidate scan light path set of all touch subregions, is configured to the second area candidate scan light path set of the touch area of described touch-screen;
Light path is chosen for each described touch subregion from the set of described second area candidate scan light path, form the 4th candidate scan light path set of described touch subregion, described 4th candidate scan light path set comprises the light path of all this touch of process subregions in the set of described second area candidate scan light path;
Remove from the set of described second area candidate scan light path and/or add light path, again the described 4th candidate scan light path set of each described touch subregion is obtained, until the ratio of the scan light way in the described 4th candidate scan light path set of all touch subregions and the whole light path numbers in described first candidate scan light path set is greater than or equal to the first preset percentage, and being less than or equal to the second preset percentage, the 4th final candidate scan light path set is the scanning optical path touching subregion.
5. method according to claim 3, is characterized in that, chooses light path, form the second candidate scan light path set, comprising from the first candidate scan light path set of each touch subregion:
From described first candidate scan light path set, choose light path successively according to light path angle order from big to small, form the second candidate scan light path set.
6. the method according to claim 3 or 4, is characterized in that, when removing light path, removes light path according to light path angle order from small to large.
7. a light path scanning inking device for touch-screen, is characterized in that, comprising:
Light path intensity acquisition module, for: the effective optical path intensity of every bar light path that each radiated element luminescence obtaining touch-screen is formed and described every bar light path, light path refers to the circuit that light is walked from the receiving element that a radiated element arrives touch-screen;
Scanning optical path chooses module, for: for each touch subregion of described touch-screen chooses scanning optical path from the light path obtained, the scanning optical path of touch subregion is through described touch subregion and effective optical path intensity is greater than default Intensity threshold, and the touch area of described touch-screen is divided into multiple touch subregion;
Scanning optical path configuration module, for: according to the scanning optical path chosen for each touch subregion, configure the scanning optical path of each radiated element.
8. device according to claim 7, is characterized in that, described scanning optical path choose module specifically for:
From obtain light path determine the first candidate scan light path set for each touch subregion, described first candidate scan light path set by through described touch subregion and all light paths that effective optical path intensity is greater than default Intensity threshold form;
From described first candidate scan light path set, choose scanning optical path, wherein, the ratio of the whole light path numbers in described scan light way and described first candidate scan light path set is in preset range.
9. device according to claim 8, is characterized in that, described scanning optical path choose module specifically for:
Light path is chosen from the first candidate scan light path set of each touch subregion, form the second candidate scan light path set, until the ratio of the light path number in described second candidate scan light path set and the whole light path numbers in the first candidate scan light path set is greater than or equal to the first preset percentage;
Union is got in the described second candidate scan light path set of all touch subregions, forms the first area candidate scan light path set of the touch area of described touch-screen;
For choosing light path from the candidate scan light path set of described first area, form the 3rd candidate scan light path set of described touch subregion, described 3rd candidate scan light path set comprises the light path of all this touch of process subregions in the first area candidate scan light path set of the touch area of described touch-screen;
If there is at least one ratio touching the scan light way in the described 3rd candidate scan light path set of subregion and the whole light path numbers in described first candidate scan light path set to be greater than the second preset percentage, light path is removed from the described 3rd candidate scan light path set of at least one touch subregion described, and same optical path is removed from the described 3rd candidate scan light path set of other touch subregions of the light path process removed, until the ratio of the scan light way in the described 3rd candidate scan light path set of all touch subregions and the whole light path numbers in described first candidate scan light path set is all greater than or equal to the first preset percentage, and be less than or equal to the second preset percentage, light path in the 3rd final candidate scan light path set is the scanning optical path touching subregion.
10. device according to claim 8, is characterized in that, described scanning optical path choose module specifically for:
Union is got in the described first candidate scan light path set of all touch subregions, forms the second area candidate scan light path set of the touch area of described touch-screen;
Light path is chosen for each described touch subregion from the set of described second area candidate scan light path, form the 4th candidate scan light path set of described touch subregion, described 4th candidate scan light path set comprises the light path of all this touch of process subregions in the set of described second area candidate scan light path;
Remove from the set of described second area candidate scan light path and/or add light path, again the described 4th candidate scan light path set of each described touch subregion is obtained, until the ratio of the scan light way in the described 4th candidate scan light path set of all touch subregions and the whole light path numbers in described first candidate scan light path set is greater than or equal to the first preset percentage, and being less than or equal to the second preset percentage, the light path in the 4th final candidate scan light path set is the scanning optical path touching subregion.
11. devices according to claim 9, is characterized in that, for each touch subregion determine the second candidate scan light path set time, described scanning optical path choose module specifically for:
From described first candidate scan light path set, choose light path successively according to light path angle order from big to small, form the second candidate scan light path set.
12. devices according to claim 9 or 10, is characterized in that, when removing light path, described scanning optical path choose module specifically for:
Light path is removed according to light path angle order from small to large.
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Effective date of registration: 20180529 Address after: 266510 No. 218, Qian Wan Gang Road, Huangdao District, Qingdao, Shandong. Patentee after: Qingdao Hisense commercial display Limited by Share Ltd Address before: 266555 No. 218, Qian Wan Gang Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: Qingdao Hisense Electric Co., Ltd. |