CN116225259A

CN116225259A - Touch position determining method, device, electronic equipment, medium and program product

Info

Publication number: CN116225259A
Application number: CN202310146299.0A
Authority: CN
Inventors: 吴承梓
Original assignee: Shanghai Awinic Technology Co Ltd
Current assignee: Shanghai Awinic Technology Co Ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-06-06

Abstract

The present disclosure relates to the field of touch detection, and in particular, to a method, an apparatus, an electronic device, a medium, and a program product for determining a touch position. In the method, the level signal output by the longitudinal electrode of the capacitive screen is firstly kept unchanged, and then the transverse coordinate corresponding to the touch point is determined according to the capacitance value change between the transverse electrode of the capacitive screen and the longitudinal electrode. Similarly, the level signal output by the transverse electrode of the capacitive screen is kept unchanged, and then the longitudinal coordinate corresponding to the touch point is determined according to the change of the capacitance value between the longitudinal electrode of the capacitive screen and the transverse electrode. By the method, the calculated amount in the process of determining the position of the touch point can be effectively reduced, and the efficiency of determining the touch position is improved.

Description

Touch position determining method, device, electronic equipment, medium and program product

Technical Field

The present disclosure relates to the field of touch detection, and in particular, to a method, an apparatus, an electronic device, a medium, and a program product for determining a touch position.

Background

Capacitive screens, such as touch screens, are commonly used to implement human-machine interaction. An electronic device having a touch screen such as a mobile phone determines whether to perform a specific function by detecting a touch position of a user. The touch position of the user can be determined by scanning the capacitance value change of each area on the touch screen by adopting a certain frequency.

Taking a common interactive capacitance screen as an example, the interactive capacitance is formed by manufacturing a transverse electrode and a longitudinal electrode by indium tin oxide on glass, and forming a capacitance at the crossing position of the two groups of electrodes, namely the two groups of electrodes respectively form two poles of the capacitance. When a finger touches the capacitive screen, the coupling between the two electrodes in the vicinity of the touch point is affected, thereby changing the capacitance between the two electrodes. The interactive capacitive screen determines the location of the touch point by scanning the capacitance change at each intersection.

The current scanning method of the interaction capacitor needs to scan the capacitance value of each intersection, namely if the transverse electrodes are X and the longitudinal electrodes are Y, the current scanning method of the interaction capacitor needs to scan X multiplied by Y points, and the efficiency is low.

Disclosure of Invention

In order to solve the technical problems, the application provides a touch position determining method, a touch position determining device, electronic equipment, a medium and a program product.

In a first aspect, the present application provides a touch position determining method for a touch position determining apparatus, the method including: taking an electrode in a first direction of the capacitive screen as an output electrode, and outputting a first level through the output electrode; detecting the first capacitance value change condition of any one of the first electrodes in the second direction of the capacitive screen aiming at the first level, taking the position of the first electrode with the first capacitance value change quantity larger than a first threshold value in each first electrode as a first coordinate of a touch point on the capacitive screen, taking the electrode in the second direction of the capacitive screen as an output electrode, and outputting the second level through the output electrode; and detecting the change condition of a third capacitance value of any one of the second electrodes in the first direction of the capacitive screen, and taking the position of the second electrode with the second capacitance value change larger than a second threshold value in each second electrode as a second coordinate of a touch point on the capacitive screen.

In some implementations, the first direction may be a lateral or longitudinal direction of the capacitive screen and the second direction is a different direction than the first direction. For example, the capacitive screen 1 shown in fig. 1 below is taken as an example, and if the first direction is longitudinal, the second direction is the corresponding transverse direction. The first coordinate is a lateral coordinate or a longitudinal coordinate, and the second coordinate is a coordinate different from the first coordinate. For example, the coordinate system shown in fig. 7 is described below, and if the first coordinate is the longitudinal coordinate in the Y-axis direction, the second coordinate is the transverse coordinate in the X-axis direction.

In the above method, the electronic device first uses the electrodes in the first direction as the output electrodes, and then outputs the level signal (i.e., the first level signal) of the same magnitude to the electrodes in the first direction. Then detecting an induction signal (namely, a first capacitance value variation) of any electrode (namely, a first electrode) in the second direction, and determining the position of the first electrode in the second direction, in which the first capacitance value variation is larger than a first threshold value, as a first coordinate of the position of the touch point.

Similarly, the electrode in the second direction is used as the output electrode, and then the level signal (i.e., the second level signal) with the same magnitude is output to the electrode in the second direction. And detecting an induction signal (namely a second capacitance value variation) of any electrode (namely a second electrode) in the first direction, and determining the position of the second electrode in the first direction, in which the second capacitance value variation is larger than a second threshold value, as a second coordinate of the position of the touch point.

By the method, the coordinates of the position of the touch point can be determined, and for the capacitive screen 1 shown in fig. 1, the method only needs to obtain the capacitance values of at most 3 transverse electrodes (X1, X2 and X3) when determining the first coordinates (such as the transverse coordinates) of the touch point, only needs to obtain the capacitance values of at most 3 longitudinal electrodes (Y1, Y2 and Y3) when determining the second coordinates (such as the longitudinal coordinates) of the touch point, and only needs to obtain the quantity of (X+Y) when determining the total capacitance values, so that the calculation amount required for determining the position of the touch point when the scheme is not adopted is greatly reduced, and the efficiency of determining the touch position is improved.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: and detecting the third capacitance value variation of any one electrode in the third electrode in the second direction corresponding to the first capacitance value variation being smaller than or equal to the first threshold value, and determining the first coordinate of the touch point on the capacitive screen according to the relation between the third capacitance value variation and the first threshold value, wherein the third electrode is different from the first electrode.

That is, when the capacitance change amount of the first electrode in the second direction is smaller than or equal to the first threshold value, any one of the other electrodes in the second direction (i.e., the third electrode) is continuously used as the receiving electrode, and then, by using the same method, whether the position of the receiving electrode in the second direction is the first coordinate of the position where the touch point is located is determined according to the relationship between the capacitance change amount of the receiving electrode (i.e., the third capacitance change amount) and the first threshold value. It can be understood that, when the electrode in the first direction is used as the output electrode, the first coordinate of the touch point on the capacitive screen can be determined according to the capacitance value variation of the electrode in the second direction by adopting the method.

With reference to the first aspect and the foregoing possible implementation manners, in one possible implementation manner of the first aspect, the method further includes: and detecting the fourth capacitance value variation of any one electrode in the fourth electrode in the first direction corresponding to the second capacitance value variation being smaller than or equal to a second threshold value, and determining a second coordinate of the touch point on the capacitive screen according to the relation between the fourth capacitance value variation and the second threshold value, wherein the fourth electrode is different from the second electrode.

That is, when the capacitance change amount of the second electrode in the first direction is less than or equal to the second threshold value, any one of the other electrodes in the first direction (that is, the fourth electrode) is continuously used as the receiving electrode, and then, by using the same method, whether the position of the receiving electrode in the first direction is the second coordinate of the position where the touch point is located is determined according to the relationship between the capacitance change amount of the receiving electrode (that is, the fourth capacitance change amount) and the second threshold value. It can be understood that, when the electrode in the second direction is used as the output electrode, the second coordinate of the touch point on the capacitive screen can be determined according to the capacitance value variation of the electrode in the first direction by adopting the method.

With reference to the first aspect and the foregoing possible implementation manners, in one possible implementation manner of the first aspect, the method further includes: and outputting the first coordinate and the second coordinate of the touch point on the capacitive screen.

That is, after determining the first and second coordinates of the touch point on the capacitive screen, the above-mentioned touch position determining apparatus may output the first and second coordinates to other apparatuses so that the other apparatuses perform subsequent operations according to the position of the touch point. For example, the touch position determining apparatus may output the coordinates of the touch point to a processor of the electronic device in which the touch position determining apparatus is located, so that the processor of the electronic device decides whether to execute the corresponding function (such as responding to a clicking operation, etc.) according to the position of the touch point.

With reference to the first aspect and the foregoing possible implementation manners, in one possible implementation manner of the first aspect, the foregoing taking an electrode in a second direction of the capacitive screen as an output electrode includes: the first electrode corresponding to the first coordinate is used as an output electrode in the second direction. It will be appreciated that after the transverse electrode (i.e. the first coordinate) corresponding to the position of the touch point has been determined, when the longitudinal electrode (i.e. the second coordinate) corresponding to the position of the touch point is determined, only the determined transverse electrode may be used as the output electrode, and then the capacitance value between each longitudinal electrode and the transverse electrode is detected, so that the longitudinal electrode (i.e. the ordinate) corresponding to the position of the touch point may be determined. By the method, the number of the output electrodes can be reduced, so that the level consumed by the input and output electrodes is reduced, and the power consumption for determining the touch position is reduced.

With reference to the first aspect and the foregoing possible implementation manners, in one possible implementation manner of the first aspect, the first direction is a longitudinal direction, the second direction is a transverse direction, the first electrodes are electrodes distributed along the transverse direction, the second electrodes are electrodes distributed along the longitudinal direction, the first coordinate is a transverse coordinate, and the second coordinate is a longitudinal coordinate.

In a second aspect, the present application provides a touch position determining apparatus, the apparatus comprising:

the control module is used for taking the electrode in the first direction of the capacitive screen as an output electrode and outputting a first level to the output electrode;

the capacitive detection module is used for detecting the first capacitance value change condition of any one of the first electrodes in the second direction of the capacitive screen for the first level;

the position determining module is used for taking the position of the first electrode with the first capacitance value variation larger than a first threshold value in each first electrode as a first coordinate of a touch point on the capacitive screen, taking an electrode in a second direction of the capacitive screen as an output electrode, and outputting a second level signal through the output electrode;

and detecting the change condition of a third capacitance value of any one of the second electrodes in the first direction of the capacitive screen, and taking the position of the second electrode with the second capacitance value change larger than a second threshold value in each second electrode as a second coordinate of a touch point on the capacitive screen.

With reference to the second aspect, in a possible implementation manner of the second aspect, the capacitance detection module is further configured to detect a third capacitance value variation of any one of the third electrodes in the second direction when the first capacitance value variation is less than or equal to a first threshold;

the position determining module is further configured to determine a first coordinate of the touch point on the capacitive screen according to a relationship between a third capacitance value variation and the first threshold, where the third electrode is different from the first electrode.

With reference to the second aspect and the foregoing possible implementation manners, in one possible implementation manner of the second aspect, the capacitance detection module is further configured to detect a fourth capacitance value variation of any one of the fourth electrodes in the first direction, corresponding to the second capacitance value variation being less than or equal to the second threshold, and the position determining module determines, according to a relationship between the fourth capacitance value variation and the second threshold, a second coordinate of the touch point on the capacitive screen, where the fourth electrode is different from the second electrode.

With reference to the second aspect and the foregoing possible implementation manners, in one possible implementation manner of the second aspect, the position determining module is further configured to output a first coordinate and a second coordinate of the touch point on the capacitive screen.

With reference to the second aspect and the foregoing possible implementation manners, in one possible implementation manner of the second aspect, the position determining module is configured to use a first electrode corresponding to the first coordinate as an output electrode in the second direction.

With reference to the second aspect and the foregoing possible implementation manners, in one possible implementation manner of the second aspect, the first direction is a longitudinal direction, the second direction is a transverse direction, the first electrodes are electrodes distributed along the transverse direction, the second electrodes are electrodes distributed along the longitudinal direction, the first coordinate is a transverse coordinate, and the second coordinate is a longitudinal coordinate.

In a third aspect, the present application also provides an electronic device comprising a memory storing computer program instructions; a processor, the processor being coupled to the memory, the memory storing computer program instructions that, when executed by the processor, cause the electronic device to carry out the method of any one of the above-described first aspect and any one of the possible implementations of the first aspect.

In a fourth aspect, the present application provides a computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method of any one of the first aspect and any one of the possible implementations of the first aspect.

In a fifth aspect, the present application provides a computer program product for, when run on an electronic device, causing the electronic device to perform the method of any one of the above-described first aspect and any one of the possible implementations of the first aspect.

It will be appreciated that the advantages of the second to fifth aspects may be found in the relevant description of the first aspect, and are not described here again.

Drawings

FIG. 1 illustrates a schematic diagram of an interactive capacitance according to an implementation of the present application;

FIG. 2 illustrates a circuit diagram for detecting a capacitive screen capacitance change according to an implementation of the present application;

FIG. 3 is a schematic diagram showing a comparison of a single touch mode and a capacitive screen touch area in a multi-touch mode according to an implementation of the present application;

FIG. 4a illustrates a schematic diagram of a touch point location, according to an embodiment of the present application;

FIG. 4b is a schematic diagram showing a comparison of the capacitance change between a lateral electrode and other lateral electrodes at the location of a touch point according to an embodiment of the present application;

FIG. 5a illustrates a schematic diagram of a touch point location, according to an embodiment of the present application;

FIG. 5b is a schematic diagram showing a comparison of the capacitance change between a lateral electrode and other lateral electrodes at the location of a touch point according to an embodiment of the present application;

FIG. 6 illustrates a flowchart of a method for implementing touch location determination on an electronic device according to an embodiment of the present application;

FIG. 7 illustrates a coordinate system corresponding to a capacitive screen according to an implementation of the present application;

FIG. 8 illustrates a schematic structural diagram of an electronic device 800 capable of implementing the touch location determination method of the present application, according to an embodiment of the present application;

fig. 9 shows a schematic block diagram of a touch location determination apparatus 900 according to an embodiment of the present application.

Detailed Description

The application provides a touch position determining method, a touch position determining device, electronic equipment, a touch position determining medium and a touch position determining program product. Various aspects of the illustrative embodiments will be described using terms commonly employed by those skilled in the art. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A or B exists simultaneously, and B exists alone. In addition, in the description of implementations of the present application, "a plurality" means two or more than two.

As described above, since the capacitance value of the touch location changes (becomes smaller) when the interactive capacitive screen is touched, the electronic device can determine the location of the touch point by scanning the capacitance change of the intersection of the lateral electrode and the longitudinal electrode in the interactive capacitive screen.

Fig. 1 shows a schematic structural diagram of an interactive capacitor according to an implementation method of the present application. As shown in fig. 1, the interactive capacitive screen 1 includes longitudinal electrodes Y1, Y2, Y3 (corresponding to gray fill in fig. 1), and transverse electrodes X1, X2, X3 (corresponding to black fill in fig. 1). When the user's finger touches the interactive capacitive screen 1, the capacitance corresponding to the position of the touch point where the user's finger is located will be significantly increased due to the influence of the human body.

It will be appreciated that the number of longitudinal and transverse electrodes of the capacitive screen 1 may also be other values, for example, for a typical 5 inch capacitive screen the number of transverse electrodes of the capacitive screen is typically 22 and the number of longitudinal electrodes is typically 9. The size of the capacitive screen 1 and the number of transverse electrodes and the number of longitudinal electrodes are not limited in this application.

It will also be appreciated that the more longitudinal and transverse electrodes distributed across capacitive screen 1, the more accurate the determination of touch point locations.

In some implementations, the interactive capacitive screen 1 shown in fig. 1 may be applied to electronic devices with a touch screen or a touch panel, including but not limited to wearable devices (e.g., smart watches, smart bracelets), smart phones, tablet computers, notebook computers, ultra-mobile personal computer, UMPC, handheld computers, netbooks, personal digital assistants (personal digital assistant, PDA), virtual reality devices, etc., which are not particularly limited in this application. The touch panel comprises a panel which is arranged on the notebook computer and the headset and has no display function but can realize a touch control function. For example, a panel for realizing a touch function on a notebook computer, or a panel corresponding to a touch area for realizing functions of cutting songs, controlling volume, pausing playing, and the like on a headphone.

In some implementations, the electronic devices include, but are not limited to, wearable devices (e.g., smartwatches, smartbracelets), smartphones, tablets, notebooks, ultra-mobile personal computers (ultra-mobile personal computer, UMPC), handheld computers, netbooks, personal digital assistants (personal digital assistant, PDA), virtual reality devices, and the like, having a touch screen or touch panel.

Fig. 2 illustrates a circuit diagram for detecting a capacitive screen capacitance change according to an implementation of the present application. The circuit diagram can be applied to any electronic device with a touch screen.

As shown in fig. 2, when a user's finger is pressed against the capacitive screen 1, a change in the capacitance Cx on the capacitive screen can be detected by the detection circuit 2. The detection circuit 2 includes a main control chip 21 and a touch position determining module 22. The main control chip 21 is used for controlling the transmission of a driving level signal to the longitudinal electrode or the transverse electrode, and the touch position determining module 22 is used for detecting the change of the capacitance value between a certain longitudinal electrode and a certain transverse electrode.

In some implementations, the electronic device scans the detection circuit 2 at a certain frequency to obtain capacitance values C at intersections of each transverse electrode (assuming that there are X) and longitudinal electrodes (assuming that there are Y) on the capacitive screen 1, and then determines the location of the touch point according to the change condition of the capacitance values C.

Specifically, taking the capacitive screen 1 shown in fig. 1 as an example, the electronic device needs to control the longitudinal electrode Y1 to send a driving level through the main control chip 21, and detect the capacitance value C1 between the longitudinal electrode Y1 and the transverse electrode X1, the capacitance value C2 between the longitudinal electrode Y1 and the transverse electrode X2, and the capacitance value C3 between the longitudinal electrode Y1 and the transverse electrode X3 through the circuit 2. Then, the electronic device controls the longitudinal electrode Y2 to transmit the driving level through the main control chip 21, and detects the capacitance value C1a between the longitudinal electrode Y2 and the transverse electrode X1, the capacitance value C2a between the longitudinal electrode Y2 and the transverse electrode X2, and the capacitance value C3a between the longitudinal electrode Y2 and the transverse electrode X3 in the same manner. Finally, the electronic device controls the longitudinal electrode Y3 to transmit the driving level through the main control chip 21, and detects the capacitance value C1b between the longitudinal electrode Y3 and the transverse electrode X1, the capacitance value C2b between the longitudinal electrode Y3 and the transverse electrode X2, and the capacitance value C3b between the longitudinal electrode Y3 and the transverse electrode X3 in the same manner.

The position of the touch point is then determined from the values of C1, C2, C3, C1a, C2a, C3a, C1b, C2b, C3b described above. Illustratively, if the change in the value of C1a satisfies the threshold condition, i.e., if the amount of change in the value of C1a is greater than the first threshold, it is determined that the change in the capacitance value at the intersection of the longitudinal electrode Y2 and the lateral electrode X1 satisfies the threshold condition, i.e., the touch point location is at the intersection of the longitudinal electrode Y2 and the lateral electrode X1.

However, in this way, if the capacitive screen 1 has X transverse electrodes and Y longitudinal electrodes, the electronic device needs to acquire capacitance values of (x×y) intersections in total, and the calculation amount is large.

Moreover, it should be appreciated that the touch modes of the capacitive screen have a variety, such as a single-point touch mode and a multi-point touch mode, and for the case that the area of the capacitive screen is relatively large (such as a capacitive screen on an electronic device such as a smart phone or a tablet computer) or the capacitive screen supports the multi-point touch mode, the touch position determining method can accurately and rapidly determine the positions of a plurality of touch points. However, for the capacitive screen with smaller area (such as the capacitive screen on electronic devices such as smart bracelets and smart watches) or for detecting the position of a touch point in a single-point touch scene, since only one touch point is needed to be determined, if the method is continuously used, the calculation amount is larger, and the power consumption is increased.

The single-point touch mode includes a touch mode that only triggers one area of the capacitive screen at the same time, such as a touch operation of clicking, long pressing, etc. The multi-touch mode includes a touch mode that simultaneously triggers a plurality of areas of the capacitive screen, such as a touch operation of double-click, multi-finger operation, and the like. Fig. 3 is a schematic diagram illustrating a comparison of a capacitive screen trigger area in a single touch manner and a multi-touch manner according to an implementation of the present application. As shown in fig. 3, only one area (P1) of the capacitive screen 1 is triggered in the single touch mode, and at least 2 areas (P2 and P3) of the capacitive screen 1 are triggered in the multi-touch mode.

In order to improve a touch position determining method of a capacitive screen in a single-point touch scene, another touch position determining method is provided, and the method includes: taking an electrode in a first direction of the capacitive screen as an output electrode, and outputting a first level through the output electrode; detecting the first capacitance value change condition of any one of the first electrodes in the second direction of the capacitive screen aiming at the first level, and taking the position of the first electrode with the first capacitance value change quantity larger than a first threshold value in each first electrode as a first coordinate of a touch point on the capacitive screen; and taking the electrode in the second direction of the capacitive screen as an output electrode, outputting a second level through the output electrode, detecting the change condition of any one of the second electrodes in the first direction of the capacitive screen relative to a second capacitance value of the second level, and taking the position of the second electrode with the second capacitance value change larger than a second threshold value in each second electrode as a second coordinate of the touch point on the capacitive screen.

In some implementations, the first direction may be a lateral or longitudinal direction of the capacitive screen and the second direction is a different direction than the first direction. The first electrode is an electrode in a second direction, and the second electrode is an electrode in a first direction. For example, the capacitive screen 1 shown in fig. 1 below is taken as an example, and if the first direction is longitudinal, the second direction is the corresponding transverse direction. The first coordinate is a lateral coordinate or a longitudinal coordinate, and the second coordinate is a coordinate different from the first coordinate. The first electrode is a transverse electrode, and the second electrode is a longitudinal electrode.

Further, as an example, referring to fig. 1, when the electrode device controls the vertical electrode Y1 to transmit a driving level through the main control chip 21, the vertical electrode Y1 is an electrode in the first direction, and the driving level is a first level; and, the lateral electrode X1, X2 or X3 is a first electrode. Similarly, when the electrode device controls the longitudinal electrode Y2 to transmit a driving level through the main control chip 21, the longitudinal electrode Y2 is an electrode in the first direction, and the driving level is a first level; and, the lateral electrode X1, X2 or X3 is a first electrode.

It will be appreciated that the description of the third electrode in this application may refer to the first electrode, i.e. the third electrode may be the transverse electrode X1, X2 or X3.

That is, the touch position determining method provided by the present application may output a predetermined level with a longitudinal electrode of the capacitive screen as an output electrode, and determine a lateral coordinate corresponding to the touch point according to a change in capacitance value between a lateral electrode of the capacitive screen and the longitudinal electrode. And outputting a preset level by taking a transverse electrode of the capacitive screen as an output electrode, and determining a longitudinal coordinate corresponding to the touch point according to the change of the capacitance value between the longitudinal electrode and the transverse electrode.

When the capacitive screen is touched, if the level signal output by the longitudinal electrode of the capacitive screen is unchanged, it is easy to understand that the transverse coordinate corresponding to the touch point can be determined according to the change of the capacitance value between the transverse electrode of the capacitive screen and the longitudinal electrode. Similarly, if the level signal output by the transverse electrode of the capacitive screen is unchanged, the longitudinal coordinate corresponding to the touch point can be determined according to the change of the capacitance value between the longitudinal electrode of the capacitive screen and the transverse electrode.

In the embodiments of the present application, the touch point may be a plurality of points in a triggered area on the capacitive screen, and when the touch point is a plurality of points in a triggered area on the capacitive screen, the position of the touch point should be determined according to whether the capacitance value changes of the plurality of points in the area satisfy the corresponding threshold conditions, but the principle is the same as the principle of determining the position of the touch point according to the capacitance value change of one point, which is not limited in this application. For convenience of explanation, the touch point is mainly taken as one point on the capacitive screen for illustration.

Taking the capacitive screen shown in fig. 1 as an example, fig. 4a shows a schematic diagram of a touch point location according to an embodiment of the present application. Fig. 4b is a schematic diagram showing a comparison of the capacitance change between the lateral electrode where the touch point is located and other lateral electrodes according to an embodiment of the present application, where the horizontal axis X represents each lateral electrode, and the vertical axis Y represents the capacitance change (actually, the decrease) corresponding to the lateral electrode (in farad (F)).

As shown in fig. 4a, the touch point position of the capacitive screen 1 touched by the user is (m, n), and the lateral electrode corresponding to the lateral coordinate m is X2. As shown in fig. 4b, the capacitance change amount of the lateral electrode X2 corresponding to the lateral coordinate m is 30 farads (F). The capacitance change amount corresponding to the other transverse electrodes X1 and X2 is 12 farads (F), and the comparison shows that the capacitance at the position of the transverse electrode X2 corresponding to the abscissa m where the touch point is located is significantly larger than the capacitance change amount corresponding to the other transverse electrodes.

Similarly, fig. 5a shows a schematic diagram of a touch point location according to an embodiment of the present application. Fig. 5b is a schematic diagram showing a comparison of the capacitance value variation between the lateral electrode where the touch point is located and other lateral electrodes according to an embodiment of the present application, where the horizontal axis X represents each longitudinal electrode and the vertical axis Y represents the capacitance value variation corresponding to the longitudinal electrode. (in Farad (F)).

As shown in fig. 5a, the touch point position of the capacitive screen 1 touched by the user is (m, n), and the vertical electrode corresponding to the vertical coordinate n is Y2. As shown in fig. 5b, the capacitance change amount of the vertical electrode Y2 corresponding to the vertical coordinate n is 30 farads (F). The capacitance value variation corresponding to the other longitudinal electrodes Y1 and Y2 is 12 farads (F), and the comparison shows that the capacitance value at the longitudinal electrode Y2 corresponding to the ordinate n where the touch point is located is significantly larger than the capacitance value variation corresponding to the other longitudinal electrodes.

Based on the above, the electronic device can determine the transverse coordinate where the touch point is located according to the capacitance value change condition of each transverse electrode of the capacitive screen, and determine the longitudinal coordinate where the touch point is located according to the capacitance value change condition of each longitudinal electrode of the capacitive screen. That is, when the capacitance value variation of a certain transverse electrode in the capacitive screen is greater than a first threshold, determining the abscissa of the position where the transverse electrode is located at the touch point, and when the capacitance value variation of a certain longitudinal electrode in the capacitive screen is greater than a second threshold, determining the ordinate of the position where the longitudinal electrode is located at the touch point. The specific values of the first threshold and the second threshold may be set according to actual requirements, which is not specifically limited in the embodiment of the present application.

Specifically, in the touch position determining method of the present application, the electronic device first uses each longitudinal electrode as an output electrode, outputs a level signal with the same size, then uses one transverse electrode as a receiving electrode, and detects a sensing signal (i.e. a capacitance value variation) of the receiving electrode, when the capacitance value variation of the receiving electrode is greater than a first threshold value, determines that the transverse electrode corresponding to the receiving electrode is an abscissa of the position where the touch point is located, and when the capacitance value variation between the receiving electrode and the output electrode is less than or equal to the first threshold value, continues to use any one of the other transverse electrodes as the receiving electrode, and then determines whether the transverse electrode corresponding to the receiving electrode is an abscissa of the position where the touch point is located according to the relationship between the capacitance value variation of the receiving electrode and the first threshold value. The method is adopted for the transverse electrodes of the capacitive screen until the abscissa of the position of the touch point is determined.

Similarly, each transverse electrode is used as an output electrode, a level signal with the same size is output, then any one longitudinal electrode is used as a receiving electrode, and the ordinate of the position of the touch point is determined by the method.

As an example, for ease of description, some embodiments of the present application may refer to a longitudinal direction of the capacitive screen as a first direction and a lateral direction as a second direction. Accordingly, the abscissa of the touch point is referred to as a first coordinate, and the ordinate is referred to as a second coordinate.

By the method, the coordinates of the position of the touch point can be determined, and for the capacitive screen 1 shown in fig. 1, the method only needs to obtain the capacitance values of at most 3 transverse electrodes (X1, X2 and X3) when determining the transverse coordinates of the touch point, and only needs to obtain the capacitance values of at most 3 longitudinal electrodes (Y1, Y2 and Y3) when determining the longitudinal coordinates of the touch point, and only needs to obtain the quantity of (X+Y) at most, so that the calculated amount is reduced, and the efficiency of determining the touch position is improved.

It will be appreciated that after a certain coordinate of the position of the touch point is determined by the above method, for example, after a transverse electrode corresponding to the position of the touch point has been determined, when a longitudinal electrode corresponding to the position of the touch point is determined, only the determined transverse electrode may be used as an output electrode, and then the capacitance value between each longitudinal electrode and the transverse electrode is detected, so that the longitudinal electrode (i.e. the ordinate) corresponding to the position of the touch point may be determined. By the method, the number of the output electrodes can be reduced, so that the level consumed by the input and output electrodes is reduced, and the power consumption for determining the touch position is reduced.

It can be appreciated that, in general, the capacitive screen works in real time, for example, the method is used to detect whether the capacitive screen is touched or not every preset time interval, and immediately output the position of the touch point. However, in order to reduce the power consumption of the capacitive screen, in some implementations, the capacitive screen may also be used to further determine the location of the touch point after the touch is detected, which is not limited in this application.

In some implementations, the touch position determining method of the present application may be applied to detection of a touch point position in a single-point touch scene, and may be applied to any electronic device having a touch screen, which is not specifically limited in this application.

The following describes a procedure for implementing the touch position determination method of the present application on an electronic device in conjunction with fig. 6. Specifically, as shown in fig. 6, the process includes:

601, the number y of longitudinal electrodes and the number x of transverse electrodes of the capacitive screen are obtained.

The vertical electrodes Y1-Yy are configured as output electrodes Tx 602. In some implementations, configuring the vertical electrodes Y1-Yy as output electrodes refers to outputting level signals of the same size to the vertical electrodes at the same time, that is, a main control chip of the electronic device controls all the vertical electrodes to output level signals of the same size at the same time. In some implementations, the main control chip 21 of the electronic device may be a processor of the electronic device, or may be a chip in the electronic device specifically used for detecting the change of the capacitance value of the capacitive screen, which is not limited in this application.

603, configuring the transverse electrode Xi as a receiving electrode Rx and measuring the sensing signal Cxi of Xi, wherein i=1.

In some implementations, the electronic device outputs the level signal to the longitudinal electrodes Y1-Yy simultaneously through the main control chip 21, and then detects the sensing signal Cxi of one of the transverse electrodes Xi through the above-mentioned touch position determining device 22. Where i=1, cx1 may be any lateral electrode in the capacitive screen, which is not limited in this application. It can be understood that the sensing signal of the transverse electrode Xi is the capacitance value variation of the transverse electrode Xi as shown in fig. 4 b.

604, it is determined whether Cxi is greater than a first threshold. If Cxi is greater than the first threshold, then the abscissa of the location of the touch point can be determined based on the lateral electrode Xi corresponding to Cxi, i.e., execution 605.

As described above, the capacitance value of the lateral electrode corresponding to the abscissa of the position where the touch point is located may significantly rise and be greater than the first threshold. Therefore, the electronic device may determine whether the acquired sensing signal (i.e. the capacitance value) of the lateral electrode Cxi is greater than the first threshold, if Cxi is greater than the first threshold, it indicates that the lateral electrode corresponding to Cxi is the lateral electrode corresponding to the location of the touch point, and at this time, the abscissa of the location of the touch point may be determined by the lateral electrode of Cxi, that is, execution 605 is performed. If Cxi is less than or equal to the first threshold value, then the other lateral electrodes continue to be configured as receive electrodes Rx, receiving sense signals of the other lateral electrodes, i.e. execution 603.

As an example, when the longitudinal electrodes Y1 to Yy are configured as the output electrodes Tx as the electrodes of the first direction, respectively, the electronic device may output the level signal as the first level to the longitudinal electrodes Y1 to Yy simultaneously through the main control chip 21. Correspondingly, the transverse electrode Xi is a first electrode in the second direction. The sense signal Cxi is the first capacitance value.

As an example, the third electrode may refer to the description of the first electrode, at which time the sensing signal Cxi may be referred to as a third capacitance value, and the third electrode is different from the first electrode.

605, determining the abscissa i of the touch point according to the transverse electrode Xi corresponding to the Cxi.

In some implementations, a coordinate system corresponding to the capacitive screen may be established in advance with the distribution of the longitudinal electrodes and the transverse electrodes in the capacitive screen.

Specifically, taking the capacitive screen 1 shown in fig. 1 as an example, fig. 7 shows a coordinate system corresponding to the capacitive screen 1 according to an implementation of the present application. As shown in fig. 7, the straight line where the upper edge of the capacitive screen 1 is located is taken as the Y axis, and the straight line where the left edge of the capacitive screen 1 is located is taken as the X axis. The transverse electrodes X1, X2, X3 intersect the longitudinal electrodes Y1, Y2, Y3 to form 9

intersecting points

1, 2, 3, 4, 5, 6, 7, 8, 9, wherein the abscissa of each intersecting point is the position of the corresponding transverse electrode of the point, and the ordinate is the position of the corresponding longitudinal electrode of the point. For example, intersection 1 has an abscissa of 1, an ordinate of 1, intersection 2 has an abscissa of 1, and an ordinate of 2.

Illustratively, if the capacitance value variation of the lateral electrode X1 is greater than the first threshold, it is possible to determine that the lateral coordinate of the position where the touch point is located is 1.

As an example, as shown in fig. 7, the first direction of the capacitive screen is a longitudinal direction along the Y-axis direction, and the second direction is a transverse direction along the X-axis direction. Accordingly, the first coordinate is a transverse coordinate (i.e., abscissa) along the X-axis direction, and the second coordinate is a longitudinal coordinate (i.e., ordinate) along the Y-axis direction.

606, it is determined whether i is greater than or equal to x, if i is less than x, i=i+1, i.e. i is increased by 1, and then execution continues 603, i.e. determining the abscissa corresponding to the position of the touch point according to the sensing signals of other lateral electrodes. It can be understood that the abscissa where the finally determined touch point is located is the first coordinate.

In some implementations, after determining the abscissa of the location of the touch point, the electronic device may determine the ordinate of the location of the touch point using a similar method. I.e. execution 607 to 612.

607, the lateral electrodes X1-Xx are configured as output electrodes Tx. The manner in which the transverse electrodes X1-Xx are configured as the output electrodes Tx is identical to the manner in which the longitudinal electrodes Y1-Yy are configured as the output electrodes Tx, and reference is made to the description of 602 above, which is not repeated here.

608, the longitudinal electrode Yj is configured as a receiving electrode Rx and the sense signal Cyj of Yi is measured, where j=1. Reference is made to the description of 603 above and will not be repeated here.

609, a determination is made as to whether Cyj is greater than a second threshold. If Cyj is greater than the second threshold, then the ordinate of the location of the touch point can be determined, i.e., 610, based on the corresponding longitudinal electrode Yj of Cyj. Reference is made to the description of 604 above and will not be repeated here.

If Cyj is less than or equal to the second threshold, then the other longitudinal electrodes continue to be configured as receiving electrodes Rx, receiving sensing signals of the other longitudinal electrodes, i.e., execution 611.

As an example, when the lateral electrodes X1 to Xx are configured as the output electrodes Tx as the electrodes of the second direction, respectively, the electronic device outputs the level signal to the lateral electrodes X1 to Xx as the second level through the main control chip 21 at the same time. Correspondingly, the longitudinal electrode Yj is a second electrode in the first direction. The sense signal Cyj of Yi is the second capacitance.

As an example, the fourth electrode may refer to the description of the second electrode, at which time the sense signal Cyj may be referred to as a fourth capacitance value, and the fourth electrode is different from the second electrode.

610, determining the ordinate j of the touch point according to the longitudinal electrode Yj corresponding to Cyj.

Illustratively, based on the coordinate system illustrated in fig. 7 above as an example, if the capacitance value variation amount of the longitudinal electrode Y2 is greater than the second threshold value, it may be determined that the ordinate of the position where the touch point is located is 2. Reference is made specifically to the description of 605 above and will not be repeated here.

611, determining whether j is greater than or equal to y, if i is less than y, j=j+1, i.e. j is increased by 1, and then executing 608, i.e. determining the ordinate corresponding to the position of the touch point according to the sensing signals of the other longitudinal electrodes.

612, outputting coordinates of the position of the touch point. Illustratively, continuing with the example of the coordinate system shown in fig. 7, the electronic device main control chip 21 may determine that the position coordinate of the touch point is (1, 2) in conjunction with 605 and 610, and output the touch point coordinate. It can be understood that the ordinate where the touch point is finally determined is the second coordinate.

In some implementations, the electronic device host chip 21 may output the touch point coordinates to the electronic device memory and simultaneously output the touch point coordinates to the electronic device processor, so that the processor determines to perform a corresponding function according to the coordinates of the point. For example, if a control is displayed on a display screen of the electronic device and the control corresponds to opening a certain interface, if the coordinates of the touch point are consistent with the coordinates of the control or the coordinates of the touch point are within the hot area range of the control, the electronic device determines that the control is triggered, that is, opens the interface corresponding to the control. The hot zone of the control refers to a set of points on a capacitive screen capable of triggering the control, and it can be understood that the control can be triggered when a touch point is a point at any position in the hot zone.

In some implementations, the electronic device may also determine the ordinate of the location of the touch point first, and then determine the abscissa of the touch point, that is, may perform 607-611 first and then 602-606, which is not limited in this application.

By the method, under the single-point touch scene, the electronic equipment can accurately determine the position of the touch point with lower calculation amount and lower power consumption.

Fig. 8 shows a schematic structural diagram of an electronic device 800 capable of implementing the touch position determining method according to the present application.

As shown in fig. 8, the electronic device 800 includes a processor 831, a memory 832, a capacitive screen or touch screen 810, a touch position determining apparatus 822, and a master control chip 821.

The processor 831 may include, among other things, one or more processing units, such as: the processor 831 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors. The controller may be a neural hub and a command center of the electronic device 800, among others. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

In an implementation manner of the present application, the processor 831 may control the main control chip 821 to output level signals of the same size to the longitudinal electrodes of the capacitive screen 810 at the same time for a preset time period at each interval, and control the touch position determining module 822 to detect the capacitance value variation of the transverse electrodes in the capacitive screen 810 at this time, so as to determine the abscissa of the position where the touch point is located. Similarly, after determining the abscissa of the position of the touch point, the processor 831 can control the main control chip 821 to output level signals of the same magnitude to the lateral electrodes of the capacitive screen 810 at the same time, and control the touch position determining module 822 to detect the capacitance value variation of the longitudinal electrodes in the capacitive screen 810 at this time, so as to determine the ordinate of the position of the touch point. The present application is not limited in this regard.

Memory 832 is used for storing instructions and data. In some implementations, the memory 832 may store the capacitance variations of the longitudinal and transverse electrodes of the capacitive screen 810 detected by the touch position determining device 822. The present application is not limited in this regard.

Capacitive screen 810 is a conduit for a user to interact with the electronic device. In an implementation of the present application, capacitive screen 810 may be an interactive capacitive screen as shown in FIG. 1. In some implementations, a display screen may be provided under capacitive screen 810 to provide a human-machine interactive interface for the user. The present application is not limited in this regard.

In some implementations, electronic device 800 may also include additional components, such as power supply devices, speakers, microphones, etc., which are not limiting in this application.

Fig. 9 shows a schematic block diagram of a touch location determination apparatus 900 according to an embodiment of the present application. As shown in fig. 9, the touch position determining apparatus 900 includes a control module 910, a capacitance measurement module 920, and a position determining module 930.

The control module 910 is configured to simultaneously output level signals with the same magnitude to the longitudinal electrodes of the capacitive screen, and control the touch position determining module to detect a capacitance value variation of the transverse electrode in the capacitive screen 810 at this time by using the capacitance measuring module 920, and control the capacitance measuring module 920 to send the capacitance value variation of the transverse electrode to the position determining module 930, so that the position determining module 930 determines an abscissa of the position where the touch point is located.

Similarly, the control module 910 is further configured to simultaneously output level signals with the same magnitude to the lateral electrodes of the capacitive screen, and control the touch position determining module to detect the capacitance value variation of the longitudinal electrode in the capacitive screen 810 at this time by using the capacitance measuring module 920, and control the capacitance measuring module 920 to send the capacitance value variation of the longitudinal electrode to the position determining module 930, so that the position determining module 930 determines the ordinate of the position where the touch point is located.

The embodiments of the present application also provide a computer readable storage medium storing a computer program, where the computer program when executed by a processor implements steps of the foregoing method embodiments.

Embodiments of the present application provide a computer program product that, when run on an electronic device (e.g., electronic device 800 described above), causes the electronic device to perform steps that may be performed in the various method embodiments described above.

According to the electronic device 800, the touch position determining apparatus 900, the computer readable storage medium and the computer program product provided by the application, the position of the touch point can be accurately determined with lower calculation amount and lower power consumption in a single-point touch scene.

Claims

1. A touch location determination method for a touch location determination device, the method comprising:

taking an electrode in a first direction of the capacitive screen as an output electrode, and outputting a first level through the output electrode;

detecting the first capacitance value change condition of any one of the first electrodes in the second direction of the capacitive screen for the first level, and taking the position of the first electrode with the first capacitance value change larger than a first threshold value in each first electrode as a first coordinate of a touch point on the capacitive screen;

And taking the electrode in the second direction of the capacitive screen as an output electrode, outputting a second level through the output electrode, detecting the change condition of any one of the second electrodes in the first direction of the capacitive screen with respect to a second capacitance value corresponding to the second level, and taking the position of the second electrode with the second capacitance value change larger than a second threshold value in each second electrode as a second coordinate of the touch point on the capacitive screen.

2. The method according to claim 1, wherein the method further comprises:

and detecting a third capacitance value variation of any one electrode in the third electrode in the second direction corresponding to the first capacitance value variation being smaller than or equal to the first threshold value, and determining a first coordinate of the touch point on the capacitive screen according to a relation between the third capacitance value variation and the first threshold value, wherein the third electrode is different from the first electrode.

3. The method according to claim 1, wherein the method further comprises:

and detecting a fourth capacitance value variation of any one electrode in the fourth electrode in the first direction corresponding to the second capacitance value variation being smaller than or equal to the second threshold value, and determining a second coordinate of the touch point on the capacitive screen according to a relation between the fourth capacitance value variation and the second threshold value, wherein the fourth electrode is different from the second electrode.

4. The method according to claim 1, wherein the method further comprises:

and outputting the first coordinate and the second coordinate of the touch point on the capacitive screen.

5. The method of claim 1, wherein the taking the electrode of the second direction of the capacitive screen as the output electrode comprises:

and taking the first electrode corresponding to the first coordinate as an output electrode in the second direction.

6. The method of any one of claims 1 to 5, wherein the first direction is a longitudinal direction, the second direction is a transverse direction, the first electrodes are electrodes distributed along the transverse direction, the second electrodes are electrodes distributed along the longitudinal direction, the first coordinate is a transverse coordinate, and the second coordinate is a longitudinal coordinate.

7. A touch location determination apparatus, the apparatus comprising:

the control module is used for taking an electrode in a first direction of the capacitive screen as an output electrode and outputting a first level to the output electrode;

The position determining module is used for taking the position of the first electrode with the first capacitance value variation larger than a first threshold value in each first electrode as a first coordinate of a touch point on the capacitive screen, taking an electrode in a second direction of the capacitive screen as an output electrode, and outputting a second level through the output electrode;

detecting the change condition of any one of the second electrodes in the first direction of the capacitive screen in relation to the third capacitance value of the second level, and taking the position of the second electrode with the second capacitance value change larger than a second threshold value in each second electrode as the second coordinate of the touch point on the capacitive screen.

8. The apparatus of claim 7, wherein the capacitance detection module is further configured to detect a third capacitance value variation of any one of the third electrodes in the second direction when a variation corresponding to the first capacitance value is less than or equal to the first threshold;

the position determining module is further configured to determine the first coordinate of the touch point on the capacitive screen according to a relationship between the third capacitance value variation and the first threshold, where the third electrode is different from the first electrode.

9. The apparatus of claim 7, wherein the capacitance detection module is further configured to detect a fourth capacitance value variation of any one of the fourth electrodes in the first direction corresponding to the second capacitance value variation being less than or equal to the second threshold value, and,

and the position determining module determines the second coordinate of the touch point on the capacitive screen according to the relation between the fourth capacitance value variation and the second threshold, wherein the fourth electrode is different from the second electrode.

10. The apparatus of claim 7, the location determination module further to output the first and second coordinates of the touch point at the capacitive screen.

11. The apparatus of claim 7, wherein the position determination module is configured to use a first electrode corresponding to the first coordinate as an output electrode in the second direction.

12. The device of any one of claims 7 to 11, wherein the first direction is longitudinal, the second direction is transverse, the first electrodes are electrodes distributed along the transverse direction, the second electrodes are electrodes distributed along the longitudinal direction, the first coordinate is a transverse coordinate, and the second coordinate is a longitudinal coordinate.

13. An electronic device comprising a memory, a processor and a capacitive screen,

the memory is for storing instructions for execution by one or more processors of the electronic device;

the processor is configured to execute instructions stored in the memory, so that the electronic device performs the touch position determination method according to any one of claims 1 to 6.

14. A computer readable medium having instructions stored thereon, which when executed on a computer cause the computer to perform the touch position determination method of any of claims 1 to 6.

15. A computer program product, characterized in that the computer program product, when run on an electronic device, causes the electronic device to perform the touch position determination method as claimed in any one of claims 1 to 6.