CN115877978A - A baseline tracking method and device for a touch screen - Google Patents

Abstract

The application provides a baseline tracking method and a baseline tracking device of a touch screen, and relates to the technical field of touch control. The method comprises the following steps: the method comprises the steps of obtaining first touch data of a current frame of the touch screen, determining the touch intensity of the touch screen according to the first touch data and a first baseline value of a previous frame of the touch screen, responding to the fact that the touch intensity is larger than or equal to a first threshold value, and updating the first baseline value according to the first touch data and second touch data of the previous frame to obtain a second baseline value of the current frame. When the touch intensity is determined to be greater than or equal to the first threshold, the baseline value is tracked and updated, so that the problem that in the related art, when the touch data is greater than or equal to the first threshold, the baseline value is not adjusted, and the deviation of the baseline value is increased accumulatively can be avoided. When the first baseline value is updated, the touch data of the current frame and the previous historical frame are considered, so that the second baseline value is more matched with the environmental state of the touch screen.

Description

A baseline tracking method and device for a touch screen

technical field

The present application relates to the field of touch technology, in particular to a baseline tracking method and device for a touch screen.

Background technique

With the improvement of people's living standards and the rapid development of science and technology, various touch technologies are more and more widely used in electronic devices. In related technologies, touch and display are integrated on one chip, and touch data is collected through a mutual capacitance touch screen to support multiple points. Since the detection principle of the touch screen is to detect the change of the capacitance of the touch screen, in practical applications, the touch data will be affected by the temperature. When the external environment or internal environment such as temperature rises, the perceived capacitance will increase with the temperature rise. In order to reduce the impact of environmental changes on the touch data, the baseline value needs to be updated to reduce the impact of the environment on the touch data. If the baseline value is inaccurate, or cannot be updated in time, or even if the update is wrong, the entire electronic device will not work properly. Therefore, how to improve the accuracy of baseline value tracking has become a concern for everyone.

Contents of the invention

Embodiments of the present application provide a baseline tracking method and device for a touch screen.

The embodiment of the first aspect of the present application proposes a baseline tracking method for a touch screen, including:

Obtain the first touch data of the current frame of the touch screen;

determining the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen;

In response to the touch intensity being greater than or equal to a first threshold, the first baseline value is updated according to the first touch data and the second touch data of a previous frame to obtain a second baseline value of the current frame.

In the embodiment of the present application, when it is determined that the touch intensity is greater than or equal to the first threshold, the baseline value is also tracked and updated, which can avoid the problem of not performing the baseline value when the touch data is greater than or equal to the first threshold in the related art. Adjustment, the resulting deviation from the baseline value will increase cumulatively. Further, it can avoid the problems of frequent failures and performance degradation of the touch screen caused by the large deviation of the baseline value in the related art. Further, since the environment changes corresponding to different frames will affect the touch data, when updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the second baseline value can be more closely related to the current environment state of the touch screen. match.

The embodiment of the second aspect of the present application proposes a baseline tracking device for a touch screen, including:

An acquisition module, configured to acquire the first touch data of the current frame of the touch screen;

A determining module, configured to determine the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen;

An update module, configured to update the first baseline value according to the first touch data and the second touch data of the previous frame when the touch intensity is greater than or equal to the first threshold, to obtain the second touch data of the current frame. baseline value.

The embodiment of the third aspect of the present application provides an electronic device, including: the touch screen baseline tracking device provided in the embodiment of the second aspect of the present application.

The embodiment of the fourth aspect of the present application proposes a touch chip, including: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the present invention. The baseline tracking method of the touch screen proposed in the embodiment of the first aspect of the application.

The embodiment of the fifth aspect of the present application provides a non-transitory computer-readable storage medium. When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the Methods.

The embodiment of the sixth aspect of the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor in the communication device, the method provided in the embodiment of the first aspect of the present application is implemented.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic flowchart of a baseline tracking method for a touch screen provided in an embodiment of the present application;

FIG. 2 is a schematic flow chart of another baseline tracking method for a touch screen provided in an embodiment of the present application;

FIG. 3 is a schematic flow chart of another baseline tracking method for a touch screen provided in an embodiment of the present application;

FIG. 4 is a schematic flow chart of another baseline tracking method for a touch screen provided in an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a touch screen baseline tracking device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an electronic device provided according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another electronic device provided according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a touch chip provided according to an embodiment of the present application.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of the embodiments of the present application as recited in the appended claims.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the embodiments of the present application may use terms such as first, second, and third to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present application, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals designate the same or similar elements throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

The baseline tracking method and device of the touch screen according to the embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic flowchart of a baseline tracking method for a touch screen provided by an embodiment of the present application. As shown in Figure 1, the method includes but is not limited to the following steps:

S101. Acquire first touch data of a current frame of a touch screen.

The baseline tracking method of the touch screen provided in the embodiment of the present application starts from the initial baseline value of the touch screen and updates the baseline value of the touch screen according to a set time interval. In the embodiment of the present application, the update process of the baseline value of the touch screen is explained by using the update process of one of the time intervals.

It can be understood that the baseline tracking method for a touch screen provided in the embodiment of the present application is applicable to an electronic device with a touch screen. For example, the electronic device can be a mobile phone, a tablet computer, a notebook, a wearable device, a smart TV, a car computer, and the like.

In the embodiment of the present application, a touch sensing component may be provided under the touch screen of the electronic device, and the touch point may be sensed by the touch sensing component to obtain the first touch data of the current frame. Optionally, the touch sensing component may be an under-screen sensor. When a finger or other medium touches the screen, the coordinate position of the touch point can be measured by detecting voltage, current, sound waves or infrared rays according to different sensing methods. For example, a capacitive touch panel uses the capacitance change generated by the electrostatic combination between the arranged transparent electrodes and the human body, and detects its coordinates from the generated current or voltage.

The capacitance value sensed by the touch sensing component in the no-touch state can be referred to as a baseline (baseline) value. The baseline value is closely related to the environment. It is the basic condition for the normal operation of the entire system and can affect the performance and functions of the entire system. Wherein, the no-touch state can be understood as a state where the user's finger is not touched and there is no external noise. That is to say, when there is no input on the touch screen, the baseline value is the signal value sensed by the touch sensing component. Wherein, noise here refers to unwanted signals generated by electronic equipment due to electrical or mechanical factors.

In some implementations, the touch data may include position information and a capacitance value of the touch point, wherein the position information may include an X-axis coordinate value and a Y-axis coordinate value.

S102. Determine the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen.

In the embodiment of the present application, starting from the initial frame of the touch screen, the baseline value of the touch screen may be continuously tracked to ensure the accuracy of the touch data. It can be understood that the baseline value may be updated once every frame, or may be updated once according to a set frame interval, which is not limited in this application.

After the first touch data is acquired, the touch intensity of the touch screen can be determined based on the first touch data and the first baseline value of the previous frame of the touch screen. Optionally, the first baseline value of the previous frame is a reference touch data, the first touch data can be subtracted from the first baseline value of the previous frame to obtain a difference, and the difference can reflect the current The difference of the frame touch relative to the first baseline value, in the embodiment of the present application, is the touch intensity of the touch screen. It can be understood that the touch intensity of the touch screen can be obtained based on subtracting the capacitance value in the first touch data from the first baseline value.

S103. In response to the touch intensity being greater than or equal to the first threshold, update the first baseline value according to the first touch data and the second touch data of the previous frame to obtain the second baseline value of the current frame.

In practice, when the baseline value is tracked or updated accurately, the difference between the touch data of two adjacent frames will be stable within the range. If there is a large difference between the touch data of two adjacent frames, it often indicates the baseline value of the touch screen. Tracking is off.

In the embodiment of the present application, after the touch intensity of the touch screen is acquired, the touch intensity may be compared with a preset first threshold, where the first threshold is an intensity threshold. When it is determined that the touch intensity is greater than or equal to the first threshold, it indicates that the touch data of two adjacent frames exceeds the range of the first threshold, and it can be determined that there is a deviation in the baseline value of the touch screen, which needs to be updated to correct the deviation.

Optionally, the first baseline value may be updated according to the first touch data and the second touch data of the previous frame to obtain the second baseline value of the current frame. In some implementations, incremental touch data between the first touch data and the second touch data may be acquired, and the first baseline value may be updated based on the incremental touch data to obtain the second baseline value of the current frame. In the embodiment of this application, because the environment changes corresponding to different frames will affect the touch data, when updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the incremental touch data of two adjacent frames can be The data is mapped to the baseline value, so that the second baseline value can better match the current environment state of the touch screen.

It can be understood that, in the embodiment of the present application, the first touch data of the current frame, the second touch data of the previous frame, the baseline value, the touch intensity and the first threshold can be stored in a designated space.

In the embodiment of the present application, the first touch data of the current frame of the touch screen is acquired, and the touch intensity of the touch screen is determined according to the first touch data and the first baseline value of the previous frame of the touch screen. The first touch data and the second touch data of the previous frame update the first baseline value to obtain the second baseline value of the current frame. In the embodiment of the present application, when it is determined that the touch intensity is greater than or equal to the first threshold, the baseline value is also tracked and updated, which can avoid the problem of not performing the baseline value when the touch data is greater than or equal to the first threshold in the related art. Adjustment, the resulting deviation from the baseline value will increase cumulatively. In the embodiment of the present application, the problems of frequent faults and performance degradation of the touch screen caused by a large deviation of the baseline value in the related art can be avoided. Further, since the environment changes corresponding to different frames will affect the touch data, when updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the second baseline value can be more closely related to the current environment state of the touch screen. match.

FIG. 2 is a schematic flowchart of another baseline tracking method for a touch screen provided by an embodiment of the present application. As shown in Figure 2, the method includes but is not limited to the following steps:

S201. Acquire first touch data of a current frame of a touch screen.

S202. Determine the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen.

For the specific introduction of steps S201-S202, reference may be made to relevant content in the foregoing embodiments, such as the records in S101-102, which will not be repeated here.

S203. Acquire incremental touch data between the first touch data and the second touch data when the touch intensity is greater than or equal to the first threshold.

When it is determined that the touch intensity is greater than or equal to the first threshold, it indicates that the touch data of two adjacent frames exceeds the range of the first threshold, and it can be determined that there is a deviation in the baseline value of the touch screen, which needs to be updated to correct the deviation. In the embodiment of the present application, the first touch data and the second touch data may be subtracted to obtain incremental touch data of two adjacent frames.

As a possible implementation, after the duration of the touch intensity greater than or equal to the first threshold reaches the set time, the incremental touch data between the first touch data and the second touch data can be obtained, which can avoid misidentification. Problems that cause frequent updates to baseline values.

S204. When the incremental touch data is smaller than the second threshold, update the first baseline value based on the incremental touch data to obtain a second baseline value.

In the embodiment of the present application, in order to ensure the stability of the touch screen detection, after the incremental touch data is acquired, the incremental touch data can be further compared with a second threshold, where the second threshold is a preset capacitance value . When the touch intensity is greater than or equal to the first threshold and the incremental touch data is less than the second threshold, the first baseline value of the previous frame is updated.

In general, the touch data changes between two adjacent frames are often small. If the touch data between two adjacent frames has a large change, it can indicate that the detection of the current frame is abnormal. If the current frame is detected by incremental touch data Updating the first baseline value will often increase the deviation. In order to ensure the accuracy of baseline tracking, in this embodiment of the application, when the incremental touch data is greater than or equal to the second threshold, the first baseline value can be directly used as The second baseline value of the current frame is re-detected in the next frame, which can avoid the problem of increased deviation caused by the update, thereby further improving the accuracy of touch data detection.

In some implementations, a first correction amount of the first baseline value may be determined based on the incremental touch data, and further, the first baseline value is corrected based on the first correction amount to obtain a second baseline value. Optionally, a first setting coefficient can be preset, and after the incremental touch data is determined, the first setting coefficient can be multiplied by the incremental touch data to obtain a first product, wherein the first product The first correction amount as the first baseline value. Further, a first sum of the first correction amount and the first baseline value is acquired as the second baseline value. It should be noted that the value range of the first fixed coefficient is between 0 and 1, for example, the second set coefficient is a, where 1>a>0.

It can be understood that, in the embodiment of the present application, the first touch data of the current frame, the second touch data of the previous frame, the baseline value, the touch intensity and the first threshold, the second threshold and the first threshold can be stored in a specified space. Set the coefficient.

As a possible implementation, the first baseline value can be updated after the incremental touch data is less than the second threshold for a set time, which can avoid the problem of frequent update of the baseline value due to misidentification.

In the embodiment of the present application, when it is greater than or equal to the first threshold, the baseline value is no longer estimated based on the touch intensity, but the baseline value is estimated by obtaining the change amount between the first touch data and the second touch data . When updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the incremental touch data of two adjacent frames can be mapped to the baseline value, and the second baseline value can be compared with the current environment of the touch screen The state is more matched, and further, the continuous tracking of the baseline value is realized, which can prevent the failure and performance degradation of the touch screen caused by sudden temperature changes.

FIG. 3 is a schematic flowchart of another baseline tracking method for a touch screen provided by an embodiment of the present application. As shown in Figure 3, the method includes but is not limited to the following steps:

S301. Starting from an initial baseline value of the touch screen, first touch data of a current frame of the touch screen is acquired.

As a possible implementation manner, touch data of an initial frame of the touch screen is acquired, and an initial baseline value is determined according to the touch data of the initial frame. Optionally, the capacitance value in the touch data of the initial frame is used as the initial baseline value.

As another possible implementation, N frames of touch data are acquired starting from the initial frame of the touch screen, where N is a positive integer greater than 1, and an average value of N frames of touch data is acquired as the initial baseline value. For example, the first 5 frames may be taken from the initial frame, and the touch data of the first 5 frames may be averaged to obtain the baseline value.

As another possible implementation, the touch screen has a set initial baseline value.

In the embodiment of the present application, starting from the initial baseline value of the touch screen, the baseline value of the touch screen is updated according to a set time interval. That is, at each time interval, the baseline value of the previous time interval may be updated.

For the specific introduction of acquiring the first touch data of the current frame of the touch screen, refer to the relevant content in the above-mentioned embodiments, such as the record in step S101 , which will not be repeated here.

S302. Determine the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen.

For the specific introduction of step S302, reference may be made to relevant content in the above-mentioned embodiments, such as the record in step S102, which will not be repeated here.

S303. Determine whether the touch intensity is greater than or equal to a first threshold.

If it is determined that the touch intensity is greater than or equal to the first threshold, perform step S304; if it is determined that the touch intensity is less than the first threshold, then perform step S308.

S304. Acquire incremental touch data between the first touch data and the second touch data.

For the specific introduction of step S304, refer to the relevant content in the above embodiments, such as the record in step S102, which will not be repeated here.

S305. Determine whether the incremental touch data is smaller than a second threshold.

If it is determined that the incremental touch data is smaller than the second threshold, step S306 is performed; if it is determined that the incremental touch data is greater than or equal to the second threshold, then step S307 is performed.

S306. Update the first baseline value based on the incremental touch data to obtain a second baseline value.

In some implementations, a first correction amount of the first baseline value may be determined based on the incremental touch data, and further, the first baseline value is corrected based on the first correction amount to obtain a second baseline value. For the specific process, reference may be made to the records of related content in the foregoing embodiments, and details are not repeated here.

S307. Directly determine the first baseline value as the second baseline value.

In order to ensure the accuracy of baseline tracking, in the embodiment of the present application, when the incremental touch data is greater than the second threshold, the first baseline value can be directly used as the second baseline value of the current frame, and the next frame can be detected again. The problem caused by the increase of the updated deviation can be avoided, so that the accuracy of touch data detection can be further improved.

S308. Update the first baseline value based on the touch intensity to obtain a second baseline value.

In some implementations, a second correction amount of the first baseline value may be determined based on the touch-increasing intensity, and further, the first baseline value is corrected based on the second correction amount to obtain a second baseline value. Optionally, a second setting coefficient can be preset, and after the touch intensity is determined, the second setting coefficient can be multiplied by the touch intensity to obtain a second product, wherein the second product serves as the first baseline The second modifier to the value. Further, a second sum of the second correction amount and the first baseline value is acquired as the second baseline value.

It should be noted that the value range of the second setting coefficient is between 0 and 1, for example, the second setting coefficient is b, where 1>b>0.

S309. Update the touch intensity of the touch screen according to the first touch data and the second baseline value.

After obtaining the second baseline value of the current frame, in order to obtain a higher touch intensity, the touch intensity of the touch screen may be re-determined based on the first touch data and the second baseline value. Optionally, the first touch data is subtracted from the second baseline value of the current frame to obtain a difference, and the difference can be used to determine the touch intensity after the touch screen is updated.

It can be understood that in this embodiment of the application, the first touch data of the current frame, the second touch data of the previous frame, the baseline value, the touch intensity, the first threshold, the second threshold, the first A set factor and a second set factor.

In the embodiment of the present application, when it is greater than or equal to the first threshold, the baseline value is no longer estimated based on the touch intensity, but the baseline value is estimated by obtaining the change amount between the first touch data and the second touch data . When updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the incremental touch data of two adjacent frames can be mapped to the baseline value, and the second baseline value can be compared with the current environment of the touch screen The state is more matching. In the case of less than the first threshold, continue to predict the baseline value according to the touch intensity, so that continuous tracking of the baseline value can be realized, and problems of failure and performance degradation of the touch screen caused by sudden temperature changes can be prevented.

FIG. 4 is a schematic flowchart of another baseline tracking method for a touch screen provided by an embodiment of the present application. As shown in Figure 4, the method includes but is not limited to the following steps:

Subtract the original Nth frame of touch data from the first baseline value to obtain a touch intensity △i; further, determine whether the absolute value of the touch intensity △i (Abs(△i)) is less than the first threshold (Thresholed, Th1) .

In the case that Abs(Δi) is greater than or equal to Th1, subtract the Nth frame touch data from the N-1th frame touch data to obtain the incremental touch data Δd; further, determine the incremental touch data Δd Whether the Jedi value (Abs(Δd)) is smaller than the second threshold Th2.

In the case that Abs(Δd) is smaller than Th2, multiply the incremental touch data Δd by the first setting coefficient a to obtain the first correction amount of the first baseline value, and further, combine the first baseline value with the first A correction amount is added to obtain a new second baseline value. In the case that Abs(Δd) is greater than or equal to Th2, the first baseline value can be used as the second baseline value. Wherein, the value range of the first setting coefficient a is between 0 and 1, that is, 1>a>0.

In the case that Abs(Δi) is less than Th1, multiply the touch intensity Δi by the second setting coefficient b to obtain the second correction amount of the first baseline value, further, the first baseline value and the second correction value The values are added together to obtain a new second baseline value. Wherein, the value range of the second setting coefficient b is between 0 and 1, that is, 1>b>0.

In the embodiment of the present application, when it is greater than or equal to the first threshold, the baseline value is no longer estimated based on the touch intensity, but the baseline value is estimated by obtaining the change amount between the first touch data and the second touch data . When updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the incremental touch data of two adjacent frames can be mapped to the baseline value, and the second baseline value can be compared with the current environment of the touch screen The state is more matching. In the case of less than the first threshold, continue to predict the baseline value according to the touch intensity, so that continuous tracking of the baseline value can be realized, and problems of failure and performance degradation of the touch screen caused by sudden temperature changes can be prevented.

It should be noted that the various embodiments provided in the embodiments of the present application may be applicable to touch fields such as trajectory prediction, contact tracking, gesture prediction, stroke recognition, and handwriting recognition.

FIG. 5 is a schematic structural diagram of a touch screen baseline tracking device according to an embodiment of the present application. As shown in FIG. 5 , the touch screen baseline tracking device 500 includes: an acquisition module 501 , a determination module 502 and an update module 503 .

Wherein, the obtaining module 501 is used to obtain the first touch data of the current frame of the touch screen;

A determining module 502, configured to determine the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen;

An updating module 503, configured to update the first baseline value according to the first touch data and the second touch data of the previous frame when the touch intensity is greater than or equal to the first threshold, to obtain the first baseline value of the current frame. Second baseline value.

In some implementations, the updating module 503 is further configured to:

acquiring incremental touch data between the first touch data and the second touch data;

In response to the incremental touch data being smaller than a second threshold, the first baseline value is updated based on the incremental touch data to obtain the second baseline value.

In some implementations, the updating module 503 is further configured to:

Acquiring a first correction amount of the first baseline value according to the incremental touch data;

Acquiring a first sum of the first correction amount and the first baseline value as the second baseline value.

In some implementations, the updating module 503 is further configured to:

When the touch intensity is less than the first threshold, based on the touch intensity, the first baseline value is updated to obtain the second baseline value.

In some implementations, the updating module 503 is further configured to:

determining a second correction amount to the first baseline value based on the touch intensity;

Acquiring a second sum of the second correction amount and the first baseline value as the second baseline value.

In some implementations, the updating module 503 is further configured to:

The baseline value of the touch screen is updated starting from the initial baseline value of the touch screen according to the set frame interval.

In some implementations, the updating module 503 is further configured to:

Acquire the touch data of the initial frame of the touch screen, and use the touch data of the initial frame as the initial baseline value; or,

Starting from the initial frame of the touch screen, acquiring N frames of touch data, where N is a positive integer greater than 1;

Acquiring the average value of the touch data of the N frames as the initial baseline value.

In some implementations, the updating module 503 is further configured to:

After obtaining the second baseline value of the next frame, the touch intensity of the touch screen is updated according to the first touch data and the second baseline value.

It should be noted that, for details not disclosed in the touch screen baseline tracking device of the embodiment of the present application, please refer to the details disclosed in the touch screen baseline tracking method of the above embodiment of the present application, and details are not repeated here.

In the embodiment of the present application, when it is greater than or equal to the first threshold, the baseline value is no longer estimated based on the touch intensity, but the baseline value is estimated by obtaining the change amount between the first touch data and the second touch data . When updating the first baseline value, considering the touch data of the current frame and the previous historical frame, the incremental touch data of two adjacent frames can be mapped to the baseline value, and the second baseline value can be compared with the current environment of the touch screen The state is more matching. In the case of less than the first threshold, continue to predict the baseline value according to the touch intensity, so that continuous tracking of the baseline value can be realized, and problems of failure and performance degradation of the touch screen caused by sudden temperature changes can be prevented.

Fig. 6 is a block diagram of an electronic device according to an exemplary embodiment. As shown in FIG. 6 , an electronic device 600 includes a baseline tracking device 500 of a touch screen. The electronic device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., the non-mobile electronic device can be a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., the embodiment of the present application Not specifically limited.

According to an embodiment of the present application, there is also provided an electronic device, including: a processor; a memory for storing instructions executable by the processor, wherein the processor is configured to execute the instructions, so as to implement the above-mentioned A baseline tracking method for touchscreens.

In order to implement the above embodiments, the present application also proposes a storage medium.

Wherein, when the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is enabled to execute the baseline tracking method for the touch screen as described above.

In order to implement the above embodiments, the present application further provides a computer program product.

Wherein, when the computer program product is executed by the processor of the electronic device, the electronic device can execute the above method.

Fig. 7 is a block diagram of an electronic device according to an exemplary embodiment. The electronic device shown in FIG. 7 is only an example, and should not limit the functions and scope of use of this embodiment of the present application.

As shown in FIG. 7 , an electronic device 700 includes a processor 701, which can be loaded into a random access memory (RAM, Random Access Memory) 703 according to a program stored in a read-only memory (ROM, Read Only Memory) 702 or from a memory 706. Various appropriate actions and processing are performed by the program. In the RAM 703, various programs and data necessary for the operation of the electronic device 900 are also stored. The processor 701 , ROM 702 , and RAM 703 are connected to each other via a bus 704 . An input/output (I/O, Input/Output) interface 705 is also connected to the bus 704 .

The following components are connected to the I/O interface 705: a memory 706 including a hard disk or the like; and a communication section 707 including a network interface card such as a LAN (Local Area Network) card, a modem, etc., the communication section 707 is executed via a network such as the Internet Communication processing; a driver 708 is also connected to the I/O interface 705 as necessary.

In particular, according to the embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments of the present application include a computer program carried on a computer-readable medium, and the computer program includes program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 707 . When the computer program is executed by the processor 701, the above-mentioned functions defined in the method of the present application are executed.

In an exemplary embodiment, there is also provided a storage medium including instructions, such as a memory including instructions, and the above instructions can be executed by the processor 701 of the electronic device 700 to complete the above method. Alternatively, the storage medium may be a non-transitory computer readable storage medium such as ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage medium. equipment etc.

In the present application, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, in which computer-readable program codes are carried. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. . Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Fig. 8 is a structural block diagram of a touch chip according to an exemplary embodiment. The touch chip shown in FIG. 8 is only an example, and should not limit the functions and scope of use of this embodiment of the present application. As shown in FIG. 8 , the touch chip 800 includes a processor 801 and a memory 802 . Wherein, the memory 802 is used to store program codes, and the processor 801 is connected to the memory 802 to read the program codes from the memory 802, so as to realize the baseline tracking method of the touch screen in the above-mentioned embodiments.

Optionally, the number of processors 801 may be one or more.

Optionally, the touch control chip may further include an interface 803, and the number of the interfaces 803 may be multiple. The interface 803 can be connected with an application program, and can receive data from external devices such as sensors.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present invention, these modifications, uses or adaptations follow the general principles of the present invention and include common knowledge or conventional technical means in the technical field not disclosed in this application . The specification and examples are to be considered exemplary only, with a true scope and spirit of the application indicated by the following claims.

It should be understood that the present application is not limited to the precise constructions which have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (20)

1. A baseline tracking method for a touch screen, comprising: Obtain the first touch data of the current frame of the touch screen; determining the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen; In response to the touch intensity being greater than or equal to a first threshold, the first baseline value is updated according to the first touch data and the second touch data of a previous frame to obtain a second baseline value of the current frame. 2. The method according to claim 1, wherein the first baseline value is updated according to the first touch data and the second touch data of the previous frame to obtain the second touch data of the current frame. Baseline values, including: acquiring incremental touch data between the first touch data and the second touch data; In response to the incremental touch data being smaller than a second threshold, the first baseline value is updated based on the incremental touch data to obtain the second baseline value. 3. The method according to claim 2, wherein the updating of the first baseline value based on the incremental touch data to obtain the second baseline value comprises: Acquiring a first correction amount of the first baseline value according to the incremental touch data; Acquiring a first sum of the first correction amount and the first baseline value as the second baseline value. 4. The method according to claim 1, wherein the method further comprises: In response to the touch intensity being less than the first threshold, based on the touch intensity, the first baseline value is updated to obtain the second baseline value. 5. The method according to claim 4, wherein the updating of the first baseline value based on the touch intensity to obtain the second baseline value comprises: determining a second correction amount to the first baseline value based on the touch intensity; Acquiring a second sum of the second correction amount and the first baseline value as the second baseline value. 6. The method according to any one of claims 1-5, wherein the method further comprises: The baseline value of the touch screen is updated starting from the initial baseline value of the touch screen according to the set frame interval. 7. The method according to any one of claims 1-5, wherein the determination process of the initial baseline value of the touch screen comprises: Acquire the touch data of the initial frame of the touch screen, and use the touch data of the initial frame as the initial baseline value; or, Starting from the initial frame of the touch screen, acquiring N frames of touch data, where N is a positive integer greater than 1; Acquiring the average value of the touch data of the N frames as the initial baseline value. 8. The method according to any one of claims 1-5, wherein after obtaining the second baseline value of the next frame, the method further comprises: The touch intensity of the touch screen is updated according to the first touch data and the second baseline value. 9. A baseline tracking device for a touch screen, comprising: An acquisition module, configured to acquire the first touch data of the current frame of the touch screen; A determining module, configured to determine the touch intensity of the touch screen according to the first touch data and the first baseline value of the previous frame of the touch screen; An update module, configured to update the first baseline value according to the first touch data and the second touch data of the previous frame when the touch intensity is greater than or equal to the first threshold, to obtain the second touch data of the current frame. baseline value. 10. The device according to claim 9, wherein the updating module is further used for: acquiring incremental touch data between the first touch data and the second touch data; In response to the incremental touch data being smaller than a second threshold, the first baseline value is updated based on the incremental touch data to obtain the second baseline value. 11. The device according to claim 10, wherein the updating module is further used for: Acquiring a first correction amount of the first baseline value according to the incremental touch data; Acquiring a first sum of the first correction amount and the first baseline value as the second baseline value. 12. The device according to claim 9, wherein the updating module is further used for: When the touch intensity is less than the first threshold, based on the touch intensity, the first baseline value is updated to obtain the second baseline value. 13. The device according to claim 12, wherein the updating module is further used for: determining a second correction amount to the first baseline value based on the touch intensity; Acquiring a second sum of the second correction amount and the first baseline value as the second baseline value. 14. The device according to any one of claims 9-13, wherein the update module is further configured to: The baseline value of the touch screen is updated starting from the initial baseline value of the touch screen according to the set frame interval. 15. The method according to any one of claims 9-13, wherein the updating module is further used for: Acquire the touch data of the initial frame of the touch screen, and use the touch data of the initial frame as the initial baseline value; or, Starting from the initial frame of the touch screen, acquiring N frames of touch data, where N is a positive integer greater than 1; Acquiring the average value of the touch data of the N frames as the initial baseline value. 16. The device according to any one of claims 9-13, wherein the update module is further configured to: After obtaining the second baseline value of the next frame, the touch intensity of the touch screen is updated according to the first touch data and the second baseline value. 17. An electronic device, characterized by comprising: the baseline tracking device for a touch screen according to any one of claims 9 to 16. 18. A touch chip, characterized in that it comprises: processor; memory for storing said processor-executable instructions; Wherein, the processor is configured to execute the instructions, so as to realize the method according to any one of claims 1-8. 19. A non-transitory computer-readable storage medium, characterized in that, when the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can perform the operation described in any one of claims 1 to 8. described method. 20. A computer program product, characterized by comprising a computer program, which implements the method according to any one of claims 1-8 when the computer program is executed by a processor.

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