CN110489015B - Touch point determining method and device, touch screen and display - Google Patents
Touch point determining method and device, touch screen and display Download PDFInfo
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- CN110489015B CN110489015B CN201910766222.7A CN201910766222A CN110489015B CN 110489015 B CN110489015 B CN 110489015B CN 201910766222 A CN201910766222 A CN 201910766222A CN 110489015 B CN110489015 B CN 110489015B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
Abstract
The embodiment of the invention provides a touch point determining method and device, a touch screen and a display, relates to the field of touch control, and can identify smaller touch points. The method comprises the following steps: acquiring a touch area under each scanning direction on a touch screen; determining the scanning direction with the largest touch area as a target direction; acquiring an intersection area of a touch area in a target direction and touch areas in other scanning directions; of each touch area in the target direction, the intersection area where the touch area belongs most is determined as the touch point. The invention is applied to the touch screen.
Description
Technical Field
The present invention relates to the field of touch control, and in particular, to a method and apparatus for determining a touch point, a touch screen, and a display.
Background
The touch screen is an electronic system capable of detecting the position of a touch point in a display area, and the human-computer interaction method is simplified. Because the infrared touch technology has the advantages of strong environmental adaptability, longer service life, more identifiable touch points and the like, the current touch screen mainly utilizes the infrared touch technology to determine the positions of the touch points. As shown in fig. 1, the infrared touch screen has a rectangular structure, and is composed of a long side emitting side, a long side receiving side, a short side emitting side, and a short side receiving side. The transmitting edge is provided with a plurality of transmitting lamps, the corresponding receiving edge is provided with a plurality of receiving lamps, and the receiving edge is usually scanned in a one-to-many mode, namely one transmitting lamp emits light, and the opposite receiving lamps receive the light, so that an optical network can be formed, and the touch behavior is judged according to the condition that the optical network is shielded.
However, in the conventional touch point determination method, the touch point can be determined only when the touch point blocks the scanning light paths in all directions. This presents a problem in that touch points that are less than the distance between the transmitting lamps will be difficult to identify. That is, the prior art cannot accurately identify touch points smaller than the distance between the transmitting lamps. Therefore, how to improve the accuracy of touch point recognition without increasing the number of infrared emission lamps is a current urgent problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a touch point determining method and device, a touch screen and a display, which can detect smaller touch points without increasing the number of infrared emission lamps and improve the accuracy of touch point identification.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, a touch point determining method is provided, including: acquiring a touch area under each scanning direction on a touch screen; the scanning direction is the direction of a group of scanning light paths with the same slope on the touch screen, and the scanning light paths of the scanning directions of the corresponding touch areas in each touch area are blocked;
determining the scanning direction with the largest touch area as a target direction;
acquiring an intersection area of a touch area in a target direction and touch areas in other scanning directions;
of each touch area in the target direction, the intersection area where the touch area belongs most is determined as the touch point.
Compared with the prior art, the technical scheme provided by the embodiment is different from the scheme that the touch point can be determined only when all scanning directions are blocked, and the invention considers that the smaller touch point can not block all scanning directions sometimes, so that only the intersection area with the largest touch area in the intersection area is taken as the touch point. Compared with the prior art, the method and the device can identify smaller touch points and improve the identification accuracy of the touch points.
In a second aspect, there is provided a touch point determining apparatus including: an acquisition unit and a determination unit.
The touch screen comprises an acquisition unit, a display unit and a display unit, wherein the acquisition unit is used for acquiring a touch area of the touch screen in each scanning direction; the scanning direction is the direction of a group of scanning light paths with the same slope on the touch screen, and the scanning light paths of the scanning directions of the corresponding touch areas in each touch area are blocked;
a determining unit configured to determine, as a target direction, a scanning direction in which the touch area acquired by the acquiring unit is the largest;
the acquisition unit is also used for acquiring the intersection area of the touch area in the target direction and the touch area in other scanning directions;
and the determining unit is also used for determining the intersection area with the largest touch area among the touch areas acquired by the acquisition unit in the target direction as a touch point.
In a third aspect, a touch screen is provided, comprising the touch point determining apparatus as described in the second aspect.
In a fourth aspect, there is provided a display comprising a touch screen as described in the third aspect.
In a fifth aspect, a touch point determination apparatus is provided, including a memory, a processor, a bus, and a communication interface; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the touch point determining apparatus is operated, the processor executes computer-executable instructions stored in the memory to cause the touch point determining apparatus to perform the touch point determining method as provided in the first aspect.
In a sixth aspect, there is provided a computer storage medium comprising computer-executable instructions which, when run on a computer, cause the computer to perform the touch point determination method as provided in the first aspect.
The invention provides a touch point determining method and device, a touch screen and a display, comprising the following steps: acquiring a touch area under each scanning direction on a touch screen; determining the scanning direction with the largest touch area as a target direction; acquiring an intersection area of a touch area in a target direction and touch areas in other scanning directions; and determining the intersection area with the largest touch area among the touch areas in the target direction as a touch point. Compared with the prior art, the method has the advantages that when all scanning directions are blocked, the scheme for determining the touch points is different, and the fact that the smaller touch points can not block all scanning directions sometimes is considered, so that only the intersection area with the largest touch area in the intersection area is taken as the touch point. Compared with the prior art, the method and the device can identify smaller touch points and improve the identification accuracy of the touch points.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an infrared touch screen according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a touch area according to an embodiment of the present invention;
fig. 3 is an application scenario of an infrared touch screen provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of a touch point determining method according to an embodiment of the present invention;
fig. 5 is another application scenario of the infrared touch screen provided by the embodiment of the present invention;
fig. 6 is another application scenario of an infrared touch screen provided by an embodiment of the present invention;
fig. 7 is another application scenario of an infrared touch screen provided by an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a touch point determining apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another touch point determining apparatus according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
It should be noted that, in the embodiment of the present invention, "english (of)", "corresponding to" and "corresponding to" may be used in a mixed manner, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
In order to clearly describe the technical solution of the embodiments of the present invention, in the embodiments of the present invention, the terms "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect, and those skilled in the art will understand that the terms "first", "second", etc. are not limited in number and execution order.
In the invention, the fact that the touch point is a real touch point can be determined when the touch point shields scanning light paths in all directions in the prior art, and the touch point is ignored when the touch point is smaller and cannot shield scanning light in all directions. Further, it is conceivable that the touch point need not block the scanning light paths in all directions when the touch point is determined. Thus, a smaller touch point which cannot be obtained in the prior art can be determined by the touch point determining method of the scheme.
The principle of the infrared touch screen is shown in fig. 1, and the infrared touch screen is provided with two infrared emission edges and two infrared receiving edges, wherein the infrared emission edges and the infrared receiving edges are arranged oppositely. An infrared emitter is arranged on the infrared emitting side, and an infrared receiver is arranged on the infrared receiving side. As shown in fig. 1, one infrared emitter may emit infrared rays in a plurality of directions.
The following terms of art in the present invention are explained:
scanning optical path: infrared emitters on the infrared emission side emit infrared rays.
Scanning direction: the scanning direction is the direction of a group of scanning light paths with the same slope on the touch screen. The infrared emitters may emit infrared light at different angles, which may correspond to a plurality of different angles of the scanning light path for a particular infrared emitter, each angle being referred to as a scanning direction.
Touch area: a specific scanning direction corresponds to a group of parallel scanning light paths, when a touch occurs, a touch point can shield a plurality of continuous parallel scanning light paths, and the area between the continuous shielded scanning light paths is a touch area in the same scanning direction. The scanning light path of the scanning direction of the corresponding touch area in each touch area is blocked. As shown in fig. 2, a, b, c and d are 4 scanning light paths in the same scanning direction blocked by the touch point, and then the area between the a scanning light path and the d scanning light path is the touch area. For convenience of description, when the touch area is represented in the subsequent illustration, only the scanning light path at the outermost side of the touch area is drawn, namely only the a scanning light path and the d scanning light path are drawn;
in another case, when the touch point is small and only one scanning light path is blocked, the area between two scanning light paths adjacent to the blocked scanning light path is determined as the touch area in the scanning direction of the blocked scanning light path.
The technical idea of the present invention will be described with reference to fig. 3. Assuming that a touch area is detected in a total of 3 scan directions of A, B and C in fig. 3, a1 and a2 are two touch areas in the a scan direction, B1 and B2 are two touch areas in the B scan direction, and C1 and C2 are two touch areas in the C scan direction. In the prior art, when the touch point blocks all the scanning directions, i.e. the area No. 1 in fig. 3, three scanning directions A, B and C are blocked, it is only possible to determine that the area No. 1 is the touch point. Whereas region No. 2 in fig. 3 cannot be regarded as a touch point in the related art because it blocks only the B scanning direction and the C scanning direction. In reality, there are often many points as small as the area No. 2, which cannot be accurately identified in the prior art.
In order to solve the problems in the prior art, as shown in fig. 4, an embodiment of the present invention provides a method for determining a touch point, which is executed by a touch screen or a control unit (e.g., CPU, MCU, etc.) corresponding to the touch screen, and in one implementation, the method provided by the embodiment of the present invention includes S101-S108:
s101: a touch area on the touch screen in each scanning direction is acquired.
S102: the scanning direction with the largest touch area is determined as the target direction.
When there are the same number of touch areas in the plurality of scan directions, one of the scan directions is optionally the target direction. As shown in fig. 5, the total of A, B, C and D, the touch areas detected in 4 scan directions, the two touch areas a1 and a2 in the a scan direction, the two touch areas B1 and B2 in the B scan direction, the two touch areas C1 and C2 in the C scan direction, and the two touch areas D1 and D2 in the D scan direction. With two touch areas per scan direction, one of the scan directions can optionally be determined as the target direction.
If the determined touch area in the target direction does not have an intersection area with the touch areas in other scanning directions, determining the determined touch area in the target direction as an invalid touch area; the target direction is then redetermined: the scanning direction in which the touch area other than the invalid touch area is the largest is determined as the target direction.
S103: and acquiring the intersection area of the touch area in the target direction and the touch areas in other scanning directions.
Since the scanning directions are different, there may be a case where the touch areas intersect. When two touch areas intersect, it can be confirmed that the intersection area is likely to be a touch point.
And S104, determining the intersection area with the largest touch area among the touch areas in the target direction as a touch point.
Since the touch areas in the same scanning direction are unlikely to intersect, all of the touch areas in different scanning directions intersect. Therefore, the more touch areas to which the intersection area belongs, the more scanning directions corresponding to the intersection area are detected, and the more likely the intersection area is a real touch point. Therefore, the present invention determines, as the touch point, the intersection region to which the touch region belongs most among the intersection regions in each of the touch regions in the target direction.
As shown in fig. 5, the D scanning direction is determined as the target direction, and among the D1 touch areas, 4 touch areas to which the intersecting area No. 3 belongs are included, and none of the other intersecting areas in the D1 touch area exceeds 4 touch areas, so the intersecting area No. 3 is determined as a touch point. In the d2 touch area, 3 touch areas belonging to the intersecting area No. 4 exist, and none of the other touch areas belonging to the intersecting area in the d2 touch area exceeds 3 touch areas, so the intersecting area No. 4 is determined as a touch point.
S105: and determining all touch areas to which the touch points belong as invalid touch areas.
As shown in fig. 5, after determining that the intersecting regions No. 3 and No. 4 are touch points, the touch region to which the intersecting region No. 3 belongs and the touch region to which the intersecting region No. 4 belongs are determined as invalid touch regions. After step S105, the schematic diagram of the remaining touch area is shown in fig. 6.
And S106, determining the scanning direction with the largest touch area except the invalid touch area as a target direction.
After S105 is performed, the remaining touch area is determined. The target direction is determined using the same method as S102.
As shown in fig. 6, the touch areas are detected in two scanning directions a and C in total, and the number of touch areas in each scanning direction is 1, and therefore, either one of the scanning directions can be selected as the target direction.
The scanning direction A is determined to be the target direction, and only one intersection area is adopted in the two touch areas, namely the intersection area No. 5 in the figure, so that the intersection area No. 6 is directly determined as a touch point without comparing the number of the touch areas to which the intersection area belongs.
According to the technical scheme provided by the embodiment of the invention, the touch point is determined through the intersecting area of the touch area, so that the S103-S106 can be circulated for a plurality of times until no intersecting area exists.
S107: and after all the touch points are obtained, performing ghost point removing operation, and tracking the track of the touch points with the ghost points deleted.
Specifically, in the case of multi-touch, for example, in the case of two-touch, two horizontal coordinate points and two vertical coordinate points are generated on the touch screen, and the position information of 4 touch points is obtained by combining the two horizontal coordinate points and the two vertical coordinate points, but in reality, only two points are touched, and the other two touch points are ghost points. Therefore, after the touch point is determined, the ghost point is also removed. The method for removing the ghost points may be any method in the prior art, for example, the number of scanning light paths passing through only a certain touch point to be determined but not other touch points to be determined may be counted, and for each touch point to be determined, if the number of scanning light paths passing through only the touch point to be determined but not the other touch points to be determined is greater than a preset threshold, the touch point to be determined is judged to be a real touch point, otherwise, the touch point to be determined is judged to be a ghost point. After the ghost points are deleted, misjudgment on the touch points can be avoided, and the accuracy of judging the touch points is improved.
The track tracking of the touch point may also be any one of the prior art, for example, after the touch point is acquired, the touch point of the next scanning period is acquired, and the distances between all the touch point pairs of two adjacent scanning periods are calculated, where the touch point pairs include one touch point in each of the two adjacent scanning periods; all the touch point pairs are arranged completely, at least two touch point pair sequences are obtained, wherein the number of the touch point pairs in the touch point pair sequences is equal to the number of the touch points in a first scanning period, and the first scanning period is a scanning period with the minimum number of the touch points in two adjacent scanning periods; and respectively calculating the sum of the distances between all the touch point pairs in each touch point pair sequence, and taking the touch point pair sequence with the smallest sum of the distances as a matching point pair sequence, wherein the connecting line between two touch points in any one touch point pair in the matching point pair sequence is a touch track. The touch trajectory may reflect a movement of the touch point.
S108, determining and outputting the logic coordinates of the touch point.
And determining the device coordinates of the gravity center of the outline according to the outline of the touch point, wherein the device coordinates are expressed by a horizontal distance and a vertical distance from the upper left corner of the screen. After the device coordinates of the touch point are obtained, the device coordinates are converted into logical coordinates and the logical coordinates are output.
In one embodiment of the present invention, in order to make the outline of the touch point closer to the actual outline, after determining the invalid touch area and the touch point, the touch point determining method provided in another embodiment of the present invention further includes:
and carrying out contour correction on the touch point according to the invalid touch area.
Illustratively, after the touch point is determined, which invalid touch regions pass the touch point is determined based on the invalid touch regions determined when the touch point was previously determined. One or more invalid touch areas passing through the touch point are selected, and the area where the touch point overlaps with the invalid touch area is determined as the actual outline of the touch point. As shown in fig. 7, the touch point determined according to the two touch areas a2 and b2 is a parallelogram area formed by intersecting the two touch areas in fig. 7, c1 is an invalid touch area passing through the intersection area, and an overlapping area of c1 and the parallelogram area, namely a shadow area in fig. 7, is a true outline of the touch point.
In another embodiment provided by the present invention, after acquiring the intersection area of the touch area in the target direction and the touch areas in other scan directions, when determining the touch point, the intersection area may be determined as the touch point according to a preset threshold value when the number of touch areas to which the intersection area belongs is greater than or equal to the threshold value.
The invention provides a touch point determining method, which comprises the following steps: acquiring a touch area under each scanning direction on a touch screen; determining the scanning direction with the largest touch area as a target direction; acquiring an intersection area of a touch area in a target direction and touch areas in other scanning directions; and determining the intersection area with the largest touch area among the touch areas in the target direction as a touch point. Compared with the prior art, the method has the advantages that when all scanning directions are blocked, the scheme for determining the touch points is different, and the fact that the smaller touch points can not block all scanning directions sometimes is considered, so that only the intersection area with the largest touch area in the intersection area is taken as the touch point. Compared with the prior art, the method and the device can identify smaller touch points and improve the identification accuracy of the touch points.
The embodiment of the invention also provides a display, which comprises a touch screen.
The touch screen provided by the embodiment of the invention comprises the touch point determining device, and the touch point determining method can be implemented.
Referring to fig. 8, an exemplary touch point determining apparatus 80 according to an embodiment of the present invention includes: an acquisition unit 81, a determination unit 82, and a processing unit 83;
an acquisition unit 81 for acquiring a touch area on the touch screen in each scanning direction; the scanning direction is the direction of a group of scanning light paths with the same slope on the touch screen, and the scanning light paths of the scanning directions of the corresponding touch areas in each touch area are blocked;
a determining unit 82 configured to determine, as a target direction, a scanning direction in which the touch area acquired by the acquiring unit 81 is the largest;
an acquiring unit 81, configured to acquire an intersection area of the touch area in the target direction and the touch area in the other scanning direction;
the determining unit 82 is further configured to determine, as the touch point, an intersection area where the touch area belongs most among the touch areas acquired by the target direction acquiring unit 81.
Optionally, the determining unit 82 is further configured to determine all the touch areas to which the touch point belongs as invalid touch areas.
Alternatively, the determining unit 82 is further configured to determine, as the target direction, a scanning direction in which the touch area other than the determined invalid touch area is largest after determining all the touch areas to which the touch point belongs as the invalid touch areas.
Optionally, the determining unit 82 is further configured to determine, when there are two or more touch areas having the same number of scan directions, one of the scan directions as the target direction.
Alternatively, the determining unit 82 is further configured to determine, when the touch area in the target direction does not intersect with the touch areas in the other scan directions, the touch area in the target direction as an invalid touch area, and determine, as the target direction, a scan direction in which the touch area other than the determined invalid touch area is largest.
Optionally, the obtaining module 81 is specifically configured to:
if the single scanning light path is detected to be blocked, determining the area between adjacent scanning light paths of the blocked scanning light path in the same scanning direction as a touch area;
if more than two continuous scanning light paths with the same slope are detected to be blocked, determining the area between the two blocked scanning light paths with the same slope and farthest from the two scanning light paths as a touch area.
Optionally, the touch point determining apparatus 80 further includes a processing unit 83;
the processing unit 83 is configured to perform contour correction on the touch point according to the invalid touch area after the determining unit 82 determines all the touch areas to which the touch point belongs as the invalid touch area.
Alternatively, the processing unit 83 is specifically configured to determine, as the true outline of the touch point, the outline of the overlapping area of the touch point and the invalid touch area determined by the determining unit 82.
Optionally, the processing unit 83 is further configured to delete the ghost points in the touch points after the determining unit 82 determines the touch points, and track the touch points after the ghost points are deleted.
Optionally, the processing unit 83 is further configured to convert the device coordinates of the touch point determined by the determining unit 82 into logical coordinates and output the logical coordinates.
The touch point determining device provided by the embodiment of the invention comprises an acquisition unit and a determining unit. An acquisition unit, configured to acquire a touch area on the touch screen in each scanning direction; a determining unit configured to determine, as a target direction, a scanning direction in which the touch area acquired by the acquiring unit is the largest; the acquisition unit is also used for acquiring the intersection area of the touch area in the target direction and the touch area in other scanning directions; and the determining unit is also used for determining the intersection area with the largest touch area among the touch areas acquired by the acquisition unit in the target direction as a touch point. Compared with the prior art, the method has the advantages that the scheme that the touch points are determined only when all directions are blocked is different, and the fact that the smaller touch points can not block all scanning directions sometimes is considered, so that only the intersection area with the largest touch area in the intersection area is taken as the touch point. Compared with the prior art, the method and the device can identify smaller touch points and improve the identification accuracy of the touch points.
Referring to fig. 9, another touch point determining apparatus is provided according to an embodiment of the present invention, which includes a memory 91, a processor 92, a bus 93, and a communication interface 94; the memory 91 is used for storing computer-executable instructions, and the processor 92 is connected with the memory 91 through the bus 93; when the touch point determining apparatus is operated, the processor 92 executes computer-executable instructions stored in the memory 91 to cause the touch point determining apparatus to perform the touch point determining method as provided in the above-described embodiment.
In a particular implementation, as one embodiment, the processor 92 (92-1 and 92-2) may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 9. And as one example the touch point determining means may comprise a plurality of processors 92, such as processor 92-1 and processor 92-2 shown in fig. 9. Each of these processors 92 may be a single-core processor (single-CPU) or a multi-core processor (Mul ti-CPU). The processor 92 herein may refer to one or more devices, circuitry, and/or processing cores for processing data (e.g., computer program instructions).
The Memory 91 may be, but is not limited to, a Read-Only Memory 91 (ROM) or other type of static storage device that can store static information and instructions, a random access Memory (Random Access Memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable Read-Only Memory (Electr ical ly Erasable Programmable Read-Only Memory, EEPROM), a compact disc (Compact Di sc Read-Only Memory) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 91 may be stand alone and may be coupled to the processor 92 via a bus 93. The memory 91 may also be integrated with the processor 92.
In a specific implementation, the memory 91 is configured to store data in the present application and computer-executable instructions corresponding to executing a software program of the present application. The processor 92 may determine various functions of the device by running or executing a software program stored in the memory 91 and invoking data stored in the memory 41.
The communication interface 94 uses any transceiver-like means for communicating with other devices or communication networks, such as a control system, a radio access network (radio acces s network, RAN), a wireless local area network (wireless local area networks, WLAN), etc. The communication interface 94 may include a receiving unit to implement a receiving function and a transmitting unit to implement a transmitting function.
Bus 93, which may be an industry standard architecture (indus try s tandard archi tecture, ISA) bus, an external device interconnect (per iphera l component interconnect, PCI) bus, or an extended industry standard architecture (extended indus try s tandard archi tecture, EISA) bus, among others. The bus 93 may be classified into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 9, but not only one bus or one type of bus.
The embodiment of the invention also provides a computer storage medium, which includes computer-executable instructions that, when executed on a computer, cause the computer to perform the touch point determination method provided in the above embodiment.
The embodiment of the invention also provides a computer program which can be directly loaded into a memory and contains software codes, and the computer program can realize the touch point determining method provided by the embodiment after being loaded and executed by a computer.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and the division of modules or units, for example, is merely a logical function division, and other manners of division are possible when actually implemented. For example, multiple units or components may be combined or may be integrated into another device, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units. The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (8)
1. The touch point determining method is applied to a touch screen and is characterized by comprising the following steps of:
acquiring a touch area of the touch screen in each scanning direction; the scanning direction is the direction of a group of scanning light paths with the same slope on the touch screen, and the scanning light path of the scanning direction corresponding to the touch area in each touch area is blocked;
determining the scanning direction with the largest touch area as a target direction;
acquiring an intersection area of the touch area in the target direction and the touch area in other scanning directions;
determining the intersection area with the largest touch area among the touch areas in the target direction as a touch point;
after determining the intersection region, which is the most of the touch regions, as a touch point in each touch region in the target direction, the method further includes:
determining all the touch areas to which the touch points belong as invalid touch areas;
determining the scanning direction of the touch area except for the invalid touch area as a target direction;
if the touch area in the target direction does not have an intersection area with the touch areas in other scanning directions, determining the touch area in the target direction as an invalid touch area;
the scanning direction in which the touch area is the largest except for the touch area determined as invalid is determined as a target direction.
2. The touch point determination method according to claim 1, characterized in that:
if there are the same number of touch areas in more than two scan directions, then optionally one of the scan directions is determined to be the target direction.
3. The touch point determination method according to claim 1, wherein the acquiring the touch area in each scanning direction includes:
if the single scanning light path is detected to be blocked, determining the area between the adjacent scanning light paths of the blocked scanning light paths in the same scanning direction as a touch area;
if more than two continuous scanning light paths with the same slope are detected to be blocked, determining the area between the two scanning light paths which are farthest away from each other in the blocked scanning light paths with the same slope as a touch area.
4. The touch point determination method according to claim 1, wherein after determining all the touch areas to which the touch point belongs as invalid touch areas, the method further comprises:
and carrying out contour correction on the touch point according to the invalid touch area.
5. The method for determining a touch point according to claim 4, wherein the performing contour correction on the touch point according to the invalid touch region specifically includes:
and determining the outline of the overlapping area of the touch point and the invalid touch area as the real outline of the touch point.
6. A touch point determining device applied to a touch screen, which is characterized by comprising an acquisition unit and a determining unit;
the acquisition unit is used for acquiring a touch area of the touch screen in each scanning direction; the scanning direction is the direction of a group of scanning light paths with the same slope on the touch screen, and the scanning light path of the scanning direction corresponding to the touch area in each touch area is blocked;
the determining unit is used for determining the scanning direction with the largest touch area acquired by the acquiring unit as a target direction;
the acquisition unit is further used for acquiring an intersection area of the touch area in the target direction and the touch area in other scanning directions;
the determining unit is further configured to determine, as a touch point, the intersection area with the largest number of touch areas among the touch areas acquired by the acquiring unit in the target direction;
the determining unit is further configured to:
after determining, as a touch point, the intersection area where the touch area belongs most among each touch area in the target direction, determining all the touch areas where the touch point belongs as invalid touch areas; determining the scanning direction of the touch area except for the invalid touch area as a target direction; if the touch area in the target direction does not have an intersection area with the touch areas in other scanning directions, determining the touch area in the target direction as an invalid touch area; the scanning direction in which the touch area is the largest except for the touch area determined as invalid is determined as a target direction.
7. A touch screen comprising the touch point determining apparatus according to claim 6.
8. A display comprising the touch screen of claim 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113126827B (en) * | 2019-12-31 | 2022-09-09 | 青岛海信商用显示股份有限公司 | Touch identification method of touch display device and related equipment |
| CN111708456A (en) * | 2020-06-17 | 2020-09-25 | 青岛海信商用显示股份有限公司 | Display device and touch area determination method |
| CN114077359A (en) * | 2020-08-11 | 2022-02-22 | 青岛海信商用显示股份有限公司 | Touch recognition method and display device |
| CN114415864B (en) * | 2020-10-13 | 2024-02-02 | 青岛海信商用显示股份有限公司 | Touch area determining method and display device |
| CN116301416B (en) * | 2022-07-30 | 2023-11-14 | 荣耀终端有限公司 | Touch scanning method, touch screen and electronic equipment |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339172A (en) * | 2011-05-31 | 2012-02-01 | 广州视睿电子科技有限公司 | Multi-axis signal scanning calculation method and system of infrared touch system |
| CN102368185A (en) * | 2011-09-23 | 2012-03-07 | 广东威创视讯科技股份有限公司 | Identification method and device of touch points |
| CN102479004A (en) * | 2010-11-29 | 2012-05-30 | 北京汇冠新技术股份有限公司 | Touch point positioning method and device and touch screen |
| CN103019461A (en) * | 2011-09-28 | 2013-04-03 | 上海精研电子科技有限公司 | Multi-point positioning method for infrared matrix touch screen |
| CN103984449A (en) * | 2014-05-30 | 2014-08-13 | 湖州佳格电子科技有限公司 | Touch screen touch area positioning method |
| CN104598082A (en) * | 2015-01-23 | 2015-05-06 | 青岛海信电器股份有限公司 | Method and device for determining candidate touch point |
| CN105045439A (en) * | 2015-08-07 | 2015-11-11 | 青岛海信电器股份有限公司 | Touch screen multi-point positioning method and apparatus and touchscreen device |
| CN105094454A (en) * | 2014-04-17 | 2015-11-25 | 青岛海信电器股份有限公司 | Method and device for multi-point positioning of touch screen, and touch screen device |
| CN105260064A (en) * | 2015-10-15 | 2016-01-20 | 青岛海信电器股份有限公司 | Touch point identification method and apparatus, and display device |
| CN106775135A (en) * | 2016-11-14 | 2017-05-31 | 青岛海信电器股份有限公司 | The localization method and device and terminal device of touch point on a kind of infrared contactor control device |
| CN106802744A (en) * | 2017-01-03 | 2017-06-06 | 青岛海信电器股份有限公司 | There is the method and device of positioning touch area during touch control operation in infrared touch panel |
| CN107943340A (en) * | 2017-11-07 | 2018-04-20 | 青岛海信电器股份有限公司 | A kind of touch-screen scanning detection method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8577538B2 (en) * | 2006-07-14 | 2013-11-05 | Irobot Corporation | Method and system for controlling a remote vehicle |
-
2019
- 2019-08-19 CN CN201910766222.7A patent/CN110489015B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479004A (en) * | 2010-11-29 | 2012-05-30 | 北京汇冠新技术股份有限公司 | Touch point positioning method and device and touch screen |
| CN102339172A (en) * | 2011-05-31 | 2012-02-01 | 广州视睿电子科技有限公司 | Multi-axis signal scanning calculation method and system of infrared touch system |
| CN102368185A (en) * | 2011-09-23 | 2012-03-07 | 广东威创视讯科技股份有限公司 | Identification method and device of touch points |
| CN103019461A (en) * | 2011-09-28 | 2013-04-03 | 上海精研电子科技有限公司 | Multi-point positioning method for infrared matrix touch screen |
| CN105094454A (en) * | 2014-04-17 | 2015-11-25 | 青岛海信电器股份有限公司 | Method and device for multi-point positioning of touch screen, and touch screen device |
| CN103984449A (en) * | 2014-05-30 | 2014-08-13 | 湖州佳格电子科技有限公司 | Touch screen touch area positioning method |
| CN104598082A (en) * | 2015-01-23 | 2015-05-06 | 青岛海信电器股份有限公司 | Method and device for determining candidate touch point |
| CN105045439A (en) * | 2015-08-07 | 2015-11-11 | 青岛海信电器股份有限公司 | Touch screen multi-point positioning method and apparatus and touchscreen device |
| CN105260064A (en) * | 2015-10-15 | 2016-01-20 | 青岛海信电器股份有限公司 | Touch point identification method and apparatus, and display device |
| CN106775135A (en) * | 2016-11-14 | 2017-05-31 | 青岛海信电器股份有限公司 | The localization method and device and terminal device of touch point on a kind of infrared contactor control device |
| CN106802744A (en) * | 2017-01-03 | 2017-06-06 | 青岛海信电器股份有限公司 | There is the method and device of positioning touch area during touch control operation in infrared touch panel |
| CN107943340A (en) * | 2017-11-07 | 2018-04-20 | 青岛海信电器股份有限公司 | A kind of touch-screen scanning detection method and device |
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|---|---|
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