TWI742894B - Touch control method and touch control system applying the same - Google Patents

Abstract

A touch control method includes steps of detecting a plurality of contact points touching a touch panel at a certain time; obtaining a plurality of distances between each two of the plurality of contact points; selecting a largest distance smaller than a predetermined distance among the distances; selecting the contact points that fall into a first circular area formed by the two end points of the largest distance in the touch panel as a first contact point cluster and referring them as a first touch point; determine the first coordinate of the first touch point; selecting a second contact point cluster among the remaining contact points, by the same way, and referring them as a second touch point; determine the second coordinate of the second touch point; and performing data processing on a corresponding position of an image display area according to the first coordinate and/or the second coordinate.

Description

Touch operation method and touch operation system

The present invention relates to a touch operation method and application of an electronic device, and particularly relates to a touch operation method and application of a display device.

The touch panel can not only have keyboard, mouse and other functions and humanized operation methods such as handwriting input, but also integrate input and output on the same interface (screen). The user only needs to touch the screen with a finger or a stylus to implement, for example, input commands, activate electronic devices, and/or click or open various menus or functions including applications (APP). With the increasing popularity of smart phones and tablet computers, they have become an input mode that users are accustomed to, and the touch panel has become one of the indispensable key components of electronic devices.

However, with the enlargement of the touch panel, in addition to providing users with a larger touch area, the operating habits of the users are also changed. For example, when the touch panel is applied to a large display billboard, consumers' habit of touching the touch panel has changed from the traditional single-point touch using a single finger or stylus to multi-point touch using the palm. Even more than one person may touch the touch panel with multiple palms at the same time, making the touch The panel cannot distinguish which touch point is the touch point that the user really wants to operate, which causes the input of touch commands to fail or the program cannot be executed.

Therefore, there is a need to provide an advanced touch operation method and its application to solve the problems faced by the conventional technology.

An embodiment of this specification provides a touch operation method applied to a touch display device. Wherein, the touch display device includes an image display area and a touch panel corresponding to the image display area; this touch operation method includes the following steps: firstly, detecting a plurality of contacts touching the touch panel at a certain point in time Point; and get the plural distances between each of the plural contact points. After that, select the largest distance smaller than the preset distance among the plurality of distances; drop the plurality of contact points into the first contact point cluster in the first circular area formed by the two end points of the largest distance in the touch panel , Determine as the first touch point; then determine the first coordinate of the first touch point. After excluding the first contact point cluster, select the second largest distance smaller than the preset distance from the rest of the plurality of distances; the remaining of the plurality of contact points fall into the second end of the second largest distance in the touch The second contact point cluster in the second circular area formed by the panel is determined to be the second touch point; and the second coordinate of the second touch point is determined. Subsequently, according to at least one of the first coordinate and the second coordinate, at least one data processing is performed on at least one corresponding position in the image display area.

Another embodiment of this specification provides a touch operating system applied to a touch display device, which includes a touch panel and a data processing unit. That Among them, the touch panel corresponds to the image display area of the touch display device, and is used to detect a plurality of contact points touching a touch area at a certain time. The data processing unit is used to perform the following steps: firstly, detect a plurality of contact points touching the touch panel at a certain time; and obtain a plurality of distances between each of the plurality of contact points. After that, select the largest distance smaller than the preset distance among the plurality of distances; drop the first contact point cluster in the first circular area formed by the two end points of the largest distance in the first circular area formed by the touch panel among the plurality of contact points , Determine as the first touch point; then determine the first coordinate of the first touch point. After excluding the first contact point cluster, select the second largest distance smaller than the preset distance from the rest of the plurality of distances; the remaining of the plurality of contact points fall into the second end of the second largest distance in the touch The second contact point cluster in the second circular area formed by the panel is determined to be the second touch point; and the second coordinate of the second touch point is determined. Subsequently, according to at least one of the first coordinate and the second coordinate, at least one data processing is performed on at least one corresponding position in the image display area.

According to the above-mentioned embodiments, the embodiments of this specification provide a touch operation method and a touch operation system applied to a touch display device. It uses a preset distance as the judgment criterion, divides the multiple contact points that touch the touch area at a certain time into multiple clusters, and obtains the representative coordinates of each cluster as the touch point of the operation, so that the image Data processing is performed on the corresponding position of the display area, such as inputting instructions, starting an electronic device, and/or clicking or opening various menus or functions including applications (APP). Solve the problem that the conventional large touch screen cannot recognize the touch points because of multiple touches at the same time.

In order to have a better understanding of the above and other aspects of this specification, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

10.30: Touch display device

11, 31: image display area

12.32: Touch operating system

101: Detect multiple touch points that touch the touch panel at a certain time

102: Obtain multiple spacings between each of multiple contact points

103: Select the largest distance smaller than the preset distance among a plurality of distances

104: Determine the first contact point clusters from the plurality of contact points that fall into the first circular area formed by the two end points of the largest distance in the touch panel, and determine it as the first touch point distance

105: Determine the first coordinate of the first touch point

106: Select the second largest distance smaller than the preset distance from the plural distances of the remaining contact points

107: The remaining contact points fall into the second contact point cluster in the second circular area formed by the two end points of the second largest distance in the touch panel, and determine it as the second touch point

108: Determine the second coordinate of the second touch

109: Determine whether there are remaining contact points

121, 321: touch panel

122, 322: data processing unit

323, 324: Tools

125, 325: database

326, 327: Default content information

a, b, c, d, e, f, m, n, o, x, y, z: contact point

D: preset distance

h1-H21: Spacing

Max h: Maximum spacing

S11, S21, S21’: the first circular area

S12: second circular area

S31, S31’, S31": the third circular area

S32, S32", S32": the fourth circular area

C11, C21, C31: first contact point cluster

C12: second contact point cluster

C31: The first tool contact point

C32: The second tool contact point cluster

Pt1, Pt1’: Touch point of the first tool

Pt2: second tool touch point

P11, P11’, P21, P21’: the first touch point

P12: second touch point

P13: third touch point

Dw1: width of the first tool

Dw2: width of the second tool

dw1: Maximum tool spacing

dw2: the second largest tool spacing

FIG. 1A is an operation flowchart of a touch operation method applied to a touch display device according to an embodiment of this specification; FIG. 1B to FIG. 1F are based on the touch operation method depicted in FIG. 1A Schematic diagram of the operation screen; Figure 2 is a schematic diagram of the operation screen of the touch operation method of the touch display device according to another embodiment of this specification; and Figures 3A to 3E are another implementation according to this specification The schematic diagram of the operation screen of the touch operation method of the display device shown in the example.

This manual provides a touch operation method and a touch operating system applied to a touch display device, which can solve the problem that the conventional large touch screen cannot recognize the touch point because it is touched by multiple points at the same time. In order to make the above-mentioned embodiments and other purposes, features, and advantages of the specification more obvious and understandable, a plurality of preferred embodiments are specifically described below in conjunction with the accompanying drawings.

However, it must be noted that these specific implementation cases and methods are not intended to limit the present invention. The present invention can still be implemented using other features, elements, methods, and parameters. The preferred embodiments are only used to illustrate the technical features of the present invention, and not to limit the scope of the patent application of the present invention. In this technical field The ordinary knowledgeable person will be able to make equal modifications and changes based on the description in the following specification without departing from the spirit of the present invention. In different embodiments and drawings, the same elements will be represented by the same element symbols.

Please refer to FIGS. 1A to 1F. FIG. 1A shows an operation flowchart of a touch operation method applied to the touch display device 10 according to an embodiment of the present specification. FIG. 1B to FIG. 1F are schematic diagrams of operation screens according to the touch control operation method depicted in FIG. 1A. The touch display device 10 includes an image display area 11 and a touch operating system 12. The touch operating system 12 includes a touch panel 121 corresponding to the image display area 11 and a data processing unit 122 that executes the touch operation method shown in FIG. 1A.

The touch display device 10 can be (but not limited to) a smart phone, a tablet computer, a notebook computer, a personal digital assistant (PDA) or a built-in display panel of a portable electronic device; also It can be a car electronic device, or a built-in touch display panel in an aircraft or other means of transportation; or it can be a fixed or movable indoor or outdoor large signage touch display panel. In some embodiments of this specification, the image display area 11 does not overlap with the touch panel 121, and the two may have coordinates corresponding to each other. For example, the two have coordinates that map to each other. In some other embodiments of this specification, the touch panel 121 may be directly attached to the top of the display area 11.

The data processing unit 122 may be (but not limited to) a logic circuit built in the touch display device 10, such as a general purpose processor and special purpose application circuitry. Or a combination module of the two is electrically connected to the image display area 11 and the touch electrodes of the touch panel 121 and/or the control chip (not shown and not limited to this), respectively. In some embodiments of this specification, the data processing unit 122 may include (but is not limited to) at least one system chip (SOC), field programmable gate array (FPGA) chip, complex Programming logic device (complex programmable logic device, CPLD), microprocessor (Microprocessor), central processing unit (Central Processing Unit, CPU), other hardware components with computing capabilities, software components, firmware components or a combination of the above ( Not shown).

This touch operation method includes the following steps: firstly, detecting a plurality of contact points touching the touch panel 121 at a certain time (as shown in step 101). In some embodiments of this specification, the type of touch panel 121 (such as capacitive touch panel, infrared touch panel, ultrasonic touch panel, resistive touch panel, electromagnetic touch panel, Image-sensing touch panels.. etc.) are different, by measuring the changes in capacitance, resistance, optics, sound energy, images or other physical quantities at different positions in the touch panel 121 to detect the touch of the touch panel 121 multiple contact points.

For example, in this embodiment, as shown in FIG. 1B, the touch panel 121 may be a capacitive touch panel, and the capacitance obtained by sensing the touch electrodes at different positions of the touch panel 121 can change directly. It is detected that there are 6 touched contact points a, b, c, d, e, and f on the touch panel 121 at a certain time. The sensing data is sent to the data processing unit 122 for logical operation.

Next, obtain a plurality of distances between each of the plurality of contact points (as shown in step 102). For example, in this embodiment, as shown in Figure 1C, the distance between any two contact points among a plurality of contact points a, b, c, e, and f is obtained, for example, between the contact points c and f The distance between the contact points is h1; the distance between the contact points a and e is h2; the distance between the contact points e and f is h3; the distance between the contact points a and f is h4; the contact point The distance between b and f is h5; the distance between contact points b and c is h6; the distance between contact points d and f is h7; the distance between contact points c and d The spacing is h8; the spacing between the contact points a and d is h9; the spacing between the contact points b and d is h10; the spacing between the contact points a and b is h11; the contact points a and The distance between c and c is h12; the distance between contact points e and c is h13; the distance between contact points e and d is h14; the distance between contact points e and b is h15.

After that, the maximum distance Max h (Max h<D) that is smaller than the preset distance D among the plurality of distances h1-h15 is selected (as shown in step 103). For example, in this embodiment, the average palm width of an adult may be used as the preset distance D, which is pre-input into the database 125 of the touch operating system 12, and then the data processing unit 122 according to the pre-input data in the database 125 and the touch The data detected by the control panel 121 performs a logical operation to find the maximum distance Max h that meets the above conditions.

As shown in Figure 1D, among the above-mentioned distances h1-h15, the lengths of the distances h7, h8, h9, h10, h12, h13, and h14 are all greater than the preset distance D; and the distances less than the preset distance D are counted as distances h2, h3, h4, h5, h6, h11 And h15. Among them, the one that meets the maximum distance Max h (Max h<D) less than the preset distance D is the distance h1 between the contact points c and f.

Then, the plurality of contact points a, b, c, e, and f fall into the first point formed by the two end points (contact points c and f) of the maximum spacing Max h (spacing h1) on the touch panel 121 The first contact point cluster C11 in the circular area S11 is determined as the first touch point (as shown in step 104). In this embodiment, the first circular area S11 can be a circular area formed by the touch panel 121 with the maximum distance Max h (spacing h1) as the diameter, and the center of the contact points c and f as the center. Wherein, the first contact point cluster C11 formed by the contact points b, c, and f falls within the range of the first circular area S11, and the three can be determined to belong to the first touch point P11. In other words, if the average palm width of an adult is used as the preset distance D, the contact points b, c, and f may be within the palm width of the same person, so they are determined to belong to the first touch point P11.

Subsequently, the first coordinate of the first touch point P11 is determined (as shown in step 105). In this implementation, the step of determining the first coordinate includes calculating the first polygon ( The coordinates of the center of gravity of the triangle Δbcf) are taken as the first coordinates of the first touch point P11.

However, it is worth noting that the method for determining the first touch point P1 is not limited to this. In other embodiments of this specification, the step of determining the first touch point P11' includes calculating the maximum distance Max h( That is, the two ends of the distance h1) (that is, the contact The midpoint coordinates of points c and f) are taken as the first coordinates of the first touch point P11' (as shown in Figure 1D).

After excluding the contact points b, c, and f of the first contact point cluster C1, the second largest distance smaller than the preset distance D (such as Step 106). For example, in this embodiment, as shown in Fig. 1E, the lengths of the distances h9 and h14 are both greater than the preset distance D; if the condition meets the condition of (h2<h1<D) that is less than the preset distance D and the distance h1 at the same time, Only the spacing h2 is left. Therefore, the spacing h2 is selected as the second largest spacing.

Then, the remaining contact points a, e, and d fall into the second circular area S12 formed by the two end points (namely contacts a and e) of the second largest pitch (namely pitch h2) in the touch panel 121 The second contact point cluster C12 is determined as the second touch point P12 (as shown in step 107). For example, in this embodiment, as shown in Figure 1F, the second circular area S12 may have the second largest distance (ie, the distance h2) as the diameter, and the midpoint of the contact points a and e as the center of the circle. A circular area formed by the control panel 121. Among them, only the combination of the contact points a and e falls within the range of the second circular area S12, and the second contact point cluster C12 composed of the contact points a and e can be determined to belong to the second touch point P12. .

Then, the second coordinate of the second touch point P12 is determined (as shown in step 108). The method of determining the second coordinate of the second touch point P2 is similar to that of determining the first coordinate of the first touch point P11 (as shown in step 105). In this embodiment, the second coordinates of the second touch point P12 can be the midpoint coordinates of the two end points (ie contact points a and e) of the second largest distance (ie, the distance h2) (as depicted in Figure 1F). Show).

Then, check whether there are any remaining contact points (as shown in step 109). If there are remaining contact points, repeat the above steps 106 to 108, and divide the remaining contact points into multiple contact point clusters in the same way. And determine the coordinates of these contact point clusters. For example, in this embodiment, after the contact points a and e are determined as the second contact point cluster C12, only the contact point d is left to form a third contact point cluster C13 by itself. Therefore, the remaining contact point d can be regarded as the third touch point P13, and the coordinates of the contact point d can be directly used as the third coordinates of the third touch point P13.

Subsequently, the data processing unit 122 can perform the display in the image display area according to at least one of the first coordinate, the second coordinate, and the third coordinate of the first touch point P11, the second touch point P12, and the third touch point P13 At least one data processing is performed on the corresponding position of (as shown in step 109). For example, in an embodiment of the present specification, the data processing unit 122 can perform a function according to one of the coordinates (for example, the first coordinate) of the first touch point P11, the second touch point P12, and the third touch point P13. A single-touch operation is performed at a position in the image display area 121 corresponding to the first coordinate. In another embodiment of this specification, the data processing unit 122 can be based on multiple coordinates of the first touch point P11, the second touch point P12, and the third touch point P13 (for example, the first coordinate and the second coordinate). ), perform multi-touch operations at multiple positions in the image display area 121 corresponding to the coordinates.

Input commands, activate electronic devices, and/or click or open various menus or functions including applications through the aforementioned single-touch operation or multi-touch operation. Solve the problem that the conventional large touch screen cannot recognize the touch point because it is touched by multiple points at the same time.

However, it is worth noting that the data processing of the aforementioned single-touch operation or multi-touch operation is not limited to this. Any data output, input, calculation or storage that is selected or triggered by a touch operation is included in the spirit of the data processing described in this specification.

Please refer to FIG. 2, which is a schematic diagram of the operation screen of the touch operation method of the touch display device 10 according to another embodiment of this specification. The touch operation shown in FIG. 2 is substantially similar to the touch operation shown in FIGS. 1B to 1F. The only difference lies in the formation of the first circular area S21, which is different from the first circular area S11 depicted in FIG. 1D. Because the steps of detecting a contact point touching the touch panel 121 at a certain time (such as step 101) and obtaining a plurality of distances between each two of the contact points (such as step 102) have been described in detail in section 1B Figure and Figure 1C, so the detailed content of these steps will not be repeated here.

Continuing Figure 1C, select the maximum distance Max h (Max h<D) that is smaller than the preset distance D among the plurality of distances h1-h15, and drop the plurality of contact points a, b, c, d, e, and f into The first contact point cluster C21 in the first circular area S21 formed by the touch panel 121 by the two end points of the maximum distance Max h (ie, the contact points c and f) is determined as the first touch point. In this embodiment, the first circular area S21 may be a circular area formed on the touch panel 121 with the maximum distance Max h (spacing h1) as the radius and the center of the contact point c. Wherein, the contact points b, c, and f fall within the range of the first circular area S21, so it can be determined that the first contact point cluster C21 composed of the contact points b, c, and f belong to the first touch point P21.

In addition, the first circular area S21' may also be formed on the touch panel 121 with the maximum spacing Max h1 (spacing h1) as the radius, and the contact point f as the center of the circle. Into a circular area. Among them, the contact points a, b, c, f, and e fall within the range of the first circular area S21', so it can be determined that the first contact point cluster C21 composed of the contact points a, b, c, f, and e 'Belong to the first touch point P21'.

Since the ranges covered by the first circular regions S21 and S21' are different, the number of contact points included in the first contact point clusters C21 and C21' may also be different. In this case, the circular area S21' covering the largest number of contact points can be selected to determine the first touch point P21'. For example, in this embodiment, the first contact point cluster C21' composed of contact points a, b, c, f, and e can be selected; and the first contact point cluster composed of contact points b, c, and f can be discarded. C21 is determined as the first touch point P21'.

Since only the contact point d is left in the following, the contact point d can be directly regarded as the third touch point P3, and the coordinates of the contact point d are taken as the third coordinates of the third touch point P3.

Subsequently, the data processing unit 122 can perform the display in the image display area according to at least one of the first coordinate, the second coordinate, and the third coordinate of the first touch point P11, the second touch point P12, and the third touch point P13 Perform at least one data processing at the corresponding position of, such as inputting instructions, activating electronic devices, and/or clicking or opening various menus or functions including applications.

In some other embodiments of this specification, it also includes the use of hand-held tools (such as tools 323 and 324) to touch the touch operating system 32 to execute operations of specific applications. For example, please refer to FIGS. 3A to 3E. FIGS. 3A to 3E are schematic diagrams of operation screens of the touch operation method of the display device 30 according to another embodiment of this specification. The touch operation method includes the following steps: First, detect a plurality of contact points touching the touch panel 321 at a certain time. Since the details of this step have been detailed in Figure 1B, it will not be repeated here. In this embodiment, the contact points touching the touch panel 321 include not only the contact points a, b, c, d, e, and f shown in Figure 1B but also the contact points m, n, o, x, y, and z (as shown in Figure 3A).

Then, obtain a plurality of intervals between each of the plurality of contact points. Since the details of this step have been detailed in Figure 1C, it will not be repeated here. As shown in Figure 3B, and for the sake of clarity, only the contact points a, b, c, e and f and the distance between any two contact points h1-h15, and the contact points x, y are shown. The distances h16, h17, and h18 between any two contact points among the three and z, and the distances h19, h20, and h21 between any two contact points among the three contacts m, n, and o.

Then, the largest tool spacing dw1 (D<dw1<Dw1) among these spacings h1-h21 that is greater than the preset distance D and less than the first tool width Dw1 is selected. For example, in this embodiment, the maximum width of the tool 323 may be used as the preset first tool width Dw1, which is input in advance into the built-in database 325 of the touch operating system 32 of the display device 30, and then the display device The data processing unit 322 of 30 performs logical operations based on the data input in the database 325 in advance and the data detected by the touch panel 321.

As shown in Fig. 3B, among the above-mentioned plural spacings h1-h21, the lengths of the spacings h7, h8, h9, h10, h12, h13, and h14 are all greater than the first tool width Dw1; greater than the preset distance D and less than The pitches of the first tool width Dw1 include pitches h17, h16, and h21. Among them, meet this maximum tool spacing The condition of dw1 (D<dw1<Dw1) is the distance h17 between the contact points x and z.

Then, it will fall into the first contact point composed of the two end points (contact points x and z) of the maximum tool spacing dw1 (spacing h17) in the third circular area S31 formed by the touch panel 321. The tool contact point cluster C31 is determined as the first tool touch point Pt1. For example, in this embodiment, the third circular area S31 may have the maximum tool spacing dw1 (spacing h17) as the diameter, and the center of the contact points x and z, in the circular area formed by the touch panel 321 . Wherein, the contact points x, y, and z fall within the range of the third circular area S31. Therefore, it can be determined that the first tool contact point cluster C31 composed of the contact points x, y, and z belongs to the first tool touch point Pt1 (as shown in FIG. 3C).

As mentioned above, the third circular areas S31' and S31" with different coverage areas can be formed in different ways. As shown in Figure 3C, the third circular area S31' can be the maximum tool spacing dw1. (Spacing h17) is the radius, and the circular area formed by the touch panel 121 with the contact point x as the center. The third circular area S31" can be the radius of the maximum tool spacing dw1 (spacing h17) to contact z It is a circular area formed by the center of the circle on the touch panel 121. In this embodiment, no matter which method is used to form the third circular area, the obtained first tool contact point cluster C31 is composed of three contact points x, y, and z. Therefore, it can be determined that the first tool contact point cluster C31 composed of the contact points x, y, and z belongs to the first tool touch point Pt1.

Subsequently, the coordinates of the touch point Pt1 of the first tool are determined. In this implementation, the step of determining the coordinates of the touch point Pt1 of the first tool includes a polygon (ie triangle △) formed by the contact points x, y, and z of the first tool contact point cluster C31. xyz), calculate the center of gravity coordinate of the triangle △xyz, and use it as the coordinate of the touch point Pt1 of the first tool.

However, it is worth noting that the method of determining the coordinates of the touch point Pt1 of the first tool is not limited to this. In other embodiments of this specification, the method of determining the coordinates of the touch point Pt1' of the first tool may be It includes calculating the midpoint coordinates of the two end points (namely the contact points x and z) of the maximum tool spacing dw1, and use it as the coordinates of the first tool touch point Pt1'.

Then, the data processing unit 322 in the display device 30 can compare the maximum tool spacing dw1 related to the tool 323 and/or the area of the third circular area S31 with the built-in database 325 of the display device 30. Yes, and send the matched preset content information 326 to the image display area 31 of the display device 30 for display.

In this embodiment, the preset content information 326 matching the maximum tool spacing dw1 with the built-in database 325 is a dinosaur pattern. When the data processing unit 322 detects that the touch panel 321 has touch points x, y, and z that match the maximum tool spacing dw1 and/or the area of the third circular area S31, it will display the dinosaur pattern on The image display area 31 of the display device 30 corresponds to the position of the coordinate of the touch point Pt1 of the first tool.

After excluding the contact points x, y, and z of the first tool contact point cluster C31, the remaining distances h1-h16 and h18-h21 are selected to be greater than the preset distance D and less than the tool 324 The second tool width Dw2 (D<dw2<Dw2) is the second largest tool spacing dw2. In this embodiment, the second tool width Dw2 of the tool 324 has also been pre-input in the database 325 of the data processing unit 322, and then detected by the data processing unit 322 according to the touch panel 321 Logical operations are performed on the data. As shown in Figure 3D, among the above-mentioned plural spacings h1-h16 and h18-h21, the one that meets the condition of the second largest tool spacing dw2 (D<dw2<Dw2) is the distance between the contact points o and m Spacing h21.

Then, it will fall into a plurality of contact points in the fourth circular area S32 formed by the touch panel 321 at the two end points (ie contact points o and m) of the second largest tool spacing dw2 (spacing h21) The second tool contact point cluster C32 is determined to be the second tool touch point Pt2. For example, in this embodiment, the fourth circular area S32 may have the second largest tool spacing dw2 (spacing h21) as the diameter, and the center of the contact point m and o as the center of the circle formed on the touch panel 121 area. It can also be the fourth circular area S32' formed by the touch panel 321 with the second largest tool spacing dw2 (spacing h21) as the radius and the contact point m as the center; or the second largest tool spacing dw2 ( The distance h21) is the radius, with the contact point o as the center of the circle, in the fourth circular area S32" formed by the touch panel 321.

Among them, only the contact points m, o, and n fall within the range of the fourth circular area S32 (the fourth circular area S32' and S32"), so the second system consisting of the contact points m, o, and n can be determined The tool contact point cluster C32 also belongs to the second tool touch point Pt2 covered by the tool 324 (as shown in FIG. 3D).

Subsequently, the coordinates of the touch point Pt2 of the second tool are determined. In this implementation, the second tool touch point Pt2 is determined to be the barycentric coordinate of the triangle △mon formed by the contact points m, o, and n of the second tool contact point cluster C32, or the second largest tool spacing dw2 The midpoint coordinates (not shown) of the two end points (namely, contact points m and o).

Then, the data processing unit 322 in the display device 30 can compare the sub-large tool spacing dw2 and/or the area of the fourth circular area S32 related to the tool 324 with the built-in database 325 of the display device 30 The comparison, and the preset content information 327 matching the comparison is sent to the image display area 321 of the display device 30 for display.

In this embodiment, the preset content information 327 matching the second largest tool spacing dw2 with the built-in database 325 is a pattern of English letters ABC. When the data processing unit 322 detects that the touch panel 321 has touch points m, o, and n corresponding to the second-largest tool spacing dw2 and/or the area of the four circular area S32, it will display the English letter ABC pattern The image display area 31 displayed on the display device 30 corresponds to the position of the coordinate of the touch point Pt2 of the second tool.

After excluding the contact points x, y, and z of the first tool contact point cluster C31 and the contact points m, o, and n of the second tool contact point cluster C32, proceed as described in Figures 1B to 1F , You can use single-touch operation or multi-touch operation to input commands, activate electronic devices, and/or click or open various menus or functions including applications. Since the detailed content of the steps described in FIG. 1B to FIG. 1F are described in detail above, the details are not repeated here.

According to the above-mentioned embodiments, the embodiments of this specification provide a touch operation method and a touch operation system applied to a touch display device. It uses a preset distance as the judgment criterion, divides the multiple contact points that touch the touch area at a certain time into multiple clusters, and obtains the representative coordinates of each cluster as the touch point of the operation, so that the image Data processing is performed on the corresponding position of the display area, such as inputting instructions, activating electronic devices and/or clicking or opening the Various menus or functions. Solve the problem that the conventional large touch screen cannot recognize the touch points because of multiple touches at the same time.

Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

101: Detect multiple touch points that touch the touch panel at a certain time

102: Obtain multiple spacings between each of multiple contact points

103: Select the largest distance smaller than the preset distance among a plurality of distances

104: Determine the first contact point clusters from the plurality of contact points that fall into the first circular area formed by the two end points of the largest distance in the touch panel, and determine it as the first touch point distance

105: Determine the first coordinate of the first touch point

106: Select the second largest distance smaller than the preset distance from the plural distances of the remaining contact points

107: The remaining contact points fall into the second contact point cluster in the second circular area formed by the two end points of the second largest distance in the touch panel, and determine it as the second touch point

108: Determine the second coordinate of the second touch

109: Determine whether there are remaining contact points

Claims (14)

A touch operation method for operating a touch display device. The touch display device includes a touch panel and an image display area corresponding to the touch panel. The touch operation method includes: detecting a point in time Touch a plurality of contact points of the touch panel; obtain a plurality of intervals between each of the plurality of contact points; select a maximum interval smaller than a preset distance among the plurality of intervals; A first contact point cluster that falls into a first circular area formed by the two end points of the maximum distance in the touch panel is determined as a first touch point among the contact points; determines the first touch point A first coordinate of the control point; after excluding the cluster of first contact points, select a large distance smaller than the preset distance from the remainder of the plurality of distances; fall into the remainder of the plurality of contact points A second contact point cluster in a second circular area formed by the two end points of the sub-large pitch is determined as a second touch point; one of the second touch points is determined A second coordinate; and at least one data processing is performed on at least one corresponding position in the image display area according to at least one of the first coordinate and the second coordinate. According to the touch operation method described in claim 1, wherein the first circular area includes a circular area formed on the touch panel with the maximum distance as a diameter. According to the touch operation method described in claim 1, wherein the first circular area includes: one of the two end points of the maximum distance is a center, the maximum distance is a radius, and the touch A circular area formed by the panel and the circular area is a circular area covering the largest number of contact points. The touch operation method described in claim 1, wherein: the step of determining the first coordinate includes calculating a first center of gravity coordinate of a first polygon formed by the first contact point cluster; and The step of determining the second coordinate includes calculating a second center of gravity coordinate of a second polygon formed by the second contact point cluster. The touch operation method described in claim 1, wherein: the step of determining the first coordinate includes calculating a first midpoint coordinate of the two end points of the maximum distance; and the step of determining the second coordinate , Including calculating a second midpoint coordinate of the two end points of a large distance. The touch operation method described in item 1 of the scope of patent application, before selecting the maximum spacing, further includes: Select a maximum tool spacing among the plurality of spacings that is greater than the preset distance and less than a first tool width; among the plurality of contact points, the two end points of the maximum tool spacing are in the touch A first tool contact point cluster in a third circular area formed by the panel is determined to be a first tool touch point; a third coordinate of the first tool touch point is determined; and At least one of the maximum tool spacing and the third circular area, and a preset content information matching a database and comparison in the display device is sent to the third coordinate of the image display area for display Of. For example, the touch operation method described in item 6 of the scope of patent application further includes: after excluding the first tool contact point cluster, selecting from the remaining ones of the plurality of pitches greater than the preset distance and less than a second A large tool pitch of the width of the tool; the remainder of the plurality of gaps falls into a first in a fourth circular area formed by the two end points of the second large tool pitch in the touch panel A cluster of two tool contact points is determined to be a second tool touch point; and a fourth coordinate of the second tool touch point is determined. The touch operation method described in item 7 of the scope of patent application, in which: The step of determining the third coordinate includes calculating a first center of gravity coordinate of a first polygon formed by a cluster of contact points of the first tool, or calculating a first center of the two end points of the maximum tool spacing Point coordinates; and the step of determining the fourth coordinate includes calculating a second center of gravity coordinate of a second polygon formed by the cluster of contact points of the second tool, or calculating the two end points of the second large tool spacing The coordinates of a second midpoint. A touch operating system, applied to a touch display device, includes: a touch panel, corresponding to an image display area of the touch display device, for detecting a plurality of touch areas touching a touch area at a moment in time Contact points; and a data processing unit for: obtaining a plurality of intervals between each of the plurality of contact points; selecting a maximum interval smaller than a predetermined distance among the plurality of intervals; A first contact point cluster that falls into a first circular area formed by the two end points of the maximum distance in the touch panel is determined as a first touch point among the contact points; determines the first touch point A first coordinate of the control point; after excluding the first contact point cluster, a large distance smaller than the preset distance is selected from the remainder of the plurality of distances; A second contact point cluster in a second circular area formed by the two end points of the second largest interval in the touch panel formed by the remaining of the plurality of pitches is judged to be a second touch Point; determine a second coordinate of the second touch point; and perform at least one data processing on at least one corresponding position in the image display area according to at least one of the first coordinate and the second coordinate. The touch operating system according to claim 9, wherein: the step of determining the first coordinate includes calculating a first center of gravity coordinate of a first polygon formed by the first contact point cluster; and The step of determining the second coordinate includes calculating a second center of gravity coordinate of a second polygon formed by the second contact point cluster. The touch operating system according to claim 9 of the scope of patent application, wherein: the step of determining the first coordinate includes calculating a first midpoint coordinate of the two end points of the maximum distance; and the step of determining the second coordinate , Including calculating a second midpoint coordinate of the two end points of the sub-large spacing. For example, the touch control operating system described in item 9 of the scope of patent application further includes: selecting a maximum tool spacing among the plurality of spacings that is greater than the preset distance and less than the width of a first tool; If the points fall into a third contact point cluster in a third circular area formed by the two end points of the maximum tool spacing in the touch panel, it is determined to be a first tool touch point; A third coordinate of the touch point of the first tool; and at least one of the maximum tool spacing and the third circular area, and a preset content matching a database and comparison in the display device The information is sent to the third coordinate of the image display area for display. The touch operating system described in item 12 of the scope of patent application further includes: after excluding the third contact point cluster, selecting a second tool that is greater than the preset distance and less than the preset distance from the remaining of the plurality of spacings The width of a large tool pitch; the remainder of the plurality of pitches falls into a fourth contact in a fourth circular area formed by the touch panel with two end points of the second large tool pitch The point cluster is determined to be a second tool touch point; and a fourth coordinate of the second tool touch point is determined. The touch operating system according to claim 13, wherein: the step of determining the third coordinate includes calculating a first center of gravity coordinate of a first polygon formed by the third contact point cluster, or Calculating a first midpoint coordinate of the two end points of the maximum tool spacing; and the step of determining the fourth coordinate includes calculating a second center of gravity coordinate of a second polygon formed by the fourth contact point cluster , Or calculate a second midpoint coordinate of the two end points of the second large tool spacing.

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