Signal acquisition method and electronic device

Abstract

The present application discloses a signal acquisition method and an electronic device, belonging to the field of electronic technology. The specific solution includes: when the current change value of the charging line is greater than a first threshold, the central processing unit acquires first touch screen information, and the sampling frequency of the first touch screen information is a first frequency; when the current change value is less than or equal to the first threshold, the central processing unit acquires second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; wherein, the first frequency is less than the second frequency.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, and particularly relates to a signal acquisition method and an electronic device. Background Art

[0002] With the increasing demand of users for the overall machine interaction function, the idea of combining a hidden capacitive button with a screen has emerged.

[0003] In the related art, when a user makes a touch input on the screen, the screen will deform, and a capacitive sensing module attached to the lower side of the screen can output a voltage signal. After the voltage signal is internally processed by a capacitive sensing signal processor, it can be transmitted to a central processing unit for operation response.

[0004] However, when the electronic device is charging, the current in the charging circuit will instantaneously increase from 0, which is equivalent to a step current with a very large amplitude being applied to the inside of the charging circuit. During this process, due to the change in magnetic flux, the charging current will generate interference signals, which will affect the output voltage of the capacitive sensing module, and further cause the screen to be mis-touched. Summary of the Invention

[0005] The purpose of the embodiments of this application is to provide a signal acquisition method and an electronic device, which can solve the problem of screen mis-touch during charging.

[0006] In a first aspect, the embodiments of this application provide a signal acquisition method, which is applied to a signal acquisition circuit. The signal acquisition circuit includes a charging circuit and a central processing unit, and the charging circuit is connected to the central processing unit. The method includes: when the current change value of the charging circuit is greater than a first threshold, the central processing unit acquires first touch screen information, and the sampling frequency of the first touch screen information is a first frequency; when the current change value is less than or equal to the first threshold, the central processing unit acquires second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; where the first frequency is less than the second frequency.

[0007] In a second aspect, the embodiments of this application provide a signal acquisition device, including: an acquisition module; the acquisition module is configured to: when the current change value of the charging circuit is greater than a first threshold, acquire first touch screen information, and the sampling frequency of the first touch screen information is a first frequency; when the current change value is less than or equal to the first threshold, the central processing unit acquires second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; where the first frequency is less than the second frequency.

[0008] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory. The memory stores a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0009] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.

[0010] In a fifth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the method described in the first aspect.

[0011] In a sixth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the method described in the first aspect.

[0012] In the embodiment of the present application, when the current change value of the charging line is greater than a first threshold, the central processing unit acquires first touch screen information, and the sampling frequency of the first touch screen information is a first frequency; when the current change value is less than or equal to the first threshold, the central processing unit acquires second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; wherein, the first frequency is less than the second frequency. Through this solution, since the sampling frequency of the first touch screen information is the first frequency, the sampling frequency of the second touch screen information is the second frequency, and the first frequency is less than the second frequency, that is, when a current mutation occurs in the charging line, the sampling frequency of the touch screen information will decrease, and the touch screen information can be staggered from the timing of the current mutation. Therefore, interference of the current mutation of the charging line on the touch screen information can be avoided, thereby avoiding the occurrence of accidental touch on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is one of the schematic flowcharts of the signal acquisition circuit provided by the embodiment of the present application;

[0014] Figure 2 is a schematic diagram of the deformation of the pressure sensing module in the signal acquisition circuit provided by the embodiment of the present application;

[0015] Figure 3 is a schematic circuit diagram of the pressure sensing module in the signal acquisition circuit provided by the embodiment of the present application;

[0016] Figure 4 is a schematic diagram of current interference of the signal acquisition circuit provided by the embodiment of the present application;

[0017] Figure 5 It is the second schematic flowchart of the signal acquisition circuit provided by an embodiment of the present application;

[0018] Figure 6 It is the schematic flowchart of the signal acquisition method provided by an embodiment of the present application;

[0019] Figure 7 It is the schematic structural diagram of the signal acquisition device provided by an embodiment of the present application;

[0020] Figure 8 It is the schematic structural diagram of the electronic device provided by an embodiment of the present application;

[0021] Figure 9 It is the schematic hardware diagram of the electronic device provided by an embodiment of the present application. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0023] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0024] Next, the signal acquisition method provided by an embodiment of the present application will be described in detail in conjunction with the accompanying drawings through specific embodiments and their application scenarios.

[0025] The signal acquisition method provided by an embodiment of the present application. The execution subject of this signal acquisition method can be an electronic device or a functional module or functional entity in the electronic device that can implement this signal acquisition method, such as a central processing unit. The electronic devices mentioned in the embodiments of the present application include, but are not limited to, mobile phones, tablet computers, computers, cameras, wearable devices, etc. Next, the signal acquisition method provided by an embodiment of the present application will be described by taking the central processing unit as the execution subject as an example.

[0026] Such as Figure 1As shown in the figure, an embodiment of the present application provides a signal acquisition circuit, including a central processing unit 101, a pressure sensing signal processor 102, a pressure sensing module 103, a screen 104, a response module 105, a charging line 106, and a charging interface 107. The central processing unit 101 is respectively connected to the screen 104, the pressure sensing signal processor 102, the response module 105, and the charging line 106. The pressure sensing signal processor 102 is connected to the pressure sensing module 103. The pressure sensing module 103 is connected to the screen 104. The charging line 106 is connected to the charging interface 107.

[0027] Optionally, the above charging line may be a line in a Flexible Printed Circuit (FPC) board or a line in a Printed Circuit Board.

[0028] As Figure 2 shown in the figure, when a user makes a touch input on the screen 104, the screen 104 will deform. Due to the influence of the deformation, the upper resistance of the pressure sensing module 103 attached to the lower side of the screen 104 will become shorter due to extrusion, the resistance value will decrease, and the lower resistance will be stretched and the resistance value will increase. As Figure 3 shown in the figure, since the resistance values of the upper resistances (deformation resistors R1 and R2) and the lower resistances (deformation resistors R3 and R4) are different, the pressure sensing module 103 can output a positive voltage V1.

[0029] Continuing to refer to Figure 1 , after receiving the positive voltage V1 transmitted by the pressure sensing module 103, the pressure sensing signal processor 102 can amplify the positive voltage V1 to obtain a screen pressure sensing signal, and then transmit the screen pressure sensing signal to the central processing unit 101. The central processing unit 101 can also receive the screen touch coordinates transmitted by the screen 104. After that, the central processing unit 101 can control the response module 105 to perform corresponding touch operations according to the screen pressure sensing signal and the screen touch coordinates.

[0030] However, after the charging interface 107 is connected to a charging device, the current in the charging line 106 will instantaneously increase from 0, as Figure 4As shown, the charging current 41 will couple with the power supply current 42 and the return current 43. Among them, the power supply current 42 is the current in the pressure-sensitive bridge power supply path between the pressure-sensitive signal processor 102 and the pressure-sensitive module 103, and the return current 43 is the current in the pressure-sensitive signal return path between the pressure-sensitive signal processor 102 and the pressure-sensitive module 103. Since a changing magnetic field is generated around a changing current, and the magnetic field flowing through a closed loop will generate a corresponding magnetic flux, when the magnetic flux changes, a corresponding induced electromotive force will be generated in the closed loop. Therefore, when the electronic device is charging instantaneously, before the charging current reaches stability, even if the user does not perform a touch input, the pressure-sensitive module 103 may output a voltage, resulting in accidental touch of the screen. To solve this problem, the embodiments of the present application also provide a signal acquisition method.

[0031] Optionally, as Figure 5 shown, the above signal acquisition circuit may further include a filter 108. The first connection end of the filter 108 is connected to the pressure-sensitive signal processor 102, the second connection end is connected to the pressure-sensitive module 103, and the third connection end is connected to the central processing unit 101. The filter 108 can be used to filter out some voltage signals output by the pressure-sensitive module 103.

[0032] As Figure 6 shown, a signal acquisition method provided by an embodiment of the present application is applied to the above signal acquisition circuit. The method may include steps 601-step 602:

[0033] Step 601, when the current change value of the charging line is greater than a first threshold, the central processing unit acquires first touch screen information.

[0034] Among them, the sampling frequency of the first touch screen information is the first frequency.

[0035] Optionally, after the charging current reaches stability, the current change value of the charging line is small. Therefore, the above first threshold may be any number greater than the current change value when the charging current reaches stability.

[0036] Optionally, the above first frequency may be greater than or equal to 0 and less than the transmission frequency of the touch screen information at other times (i.e., the second frequency). The second frequency refers to the transmission frequency that can prevent the user from experiencing touch feedback delay.

[0037] Optionally, the above first touch screen information may include at least one of the following: screen touch coordinates and screen pressure sensing signals. The screen touch coordinates are used to enable the central processing unit to determine the position where the user makes a touch input on the screen. The screen pressure sensing signal is used to enable the central processing unit to determine that the screen has undergone a touch deformation. That is, when the current change value of the charging line is greater than the first threshold, the central processing unit can obtain the screen touch coordinates with a sampling frequency of the first frequency, can also obtain the screen pressure sensing signal with a sampling frequency of the first frequency, or can also obtain the screen touch coordinates and the screen pressure sensing signal with a sampling frequency of the first frequency.

[0038] It should be noted that the central processing unit can only execute the corresponding response operation in response to the user's touch input when it receives the screen touch coordinates and the screen pressure sensing signal.

[0039] Based on the above solution, since the first touch screen information can include at least one of the screen touch coordinates and the screen pressure sensing signal, and the central processing unit can only execute the corresponding response operation in response to the user's touch input when it receives the screen touch coordinates and the screen pressure sensing signal, reducing the sampling frequency of at least one of the screen touch coordinates and the screen pressure sensing signal can avoid the interference of the current mutation of the charging line on the touch screen response process.

[0040] Optionally, when the first touch screen information includes the screen touch coordinates, the central processing unit can adjust the capacitance sampling frequency of the screen from the second frequency to the first frequency when the current change value is greater than the first threshold.

[0041] It should be noted that when the user's finger presses on the target position on the screen, the capacitance of the target position will change, and the central processing unit can inversely deduce the screen coordinates of the target position, that is, the screen touch coordinates, according to the coordinates of the capacitance. Therefore, the sampling frequency of the screen touch coordinates is the capacitance sampling frequency of the screen.

[0042] Exemplarily, taking the first frequency as 0, when the current change value is greater than the first threshold, the central processing unit can adjust the capacitance sampling frequency of the screen from the second frequency to 0. That is, when the current change value is greater than the first threshold, the coordinates of the capacitance will not be transmitted from the screen to the central processing unit, and the central processing unit cannot determine the screen touch coordinates. Therefore, the central processing unit will not execute the corresponding response operation.

[0043] Based on the above solution, since the capacitance sampling frequency of the screen can be adjusted from the second frequency to the first frequency, when the current change value is greater than the first threshold, the frequency at which the central processing unit obtains the screen touch coordinates is reduced. In this way, the interference of the current mutation of the charging line on the touch screen response process can be reduced.

[0044] Optionally, when the first touch screen information includes a screen pressure sensing signal, the central processing unit may adjust the voltage sampling frequency of the pressure sensing signal processor from a second frequency to a first frequency when the current change value is greater than a first threshold.

[0045] It should be noted that when the user's finger presses on the screen, the deformation resistance of the pressure sensing module will deform, the resistance value of the deformation resistance will change, and the pressure sensing module will output a positive voltage accordingly. The pressure sensing signal processor can collect this positive voltage, amplify it, and finally transmit the amplified screen pressure sensing signal to the central processing unit. The central processing unit can determine that the screen has undergone touch deformation based on the received screen pressure sensing signal. Therefore, the sampling frequency of the screen pressure sensing signal is the frequency at which the pressure sensing signal processor collects the positive voltage (i.e., the voltage sampling frequency).

[0046] Specifically, since the positive voltage output by the pressure sensing module needs to be amplified by the pressure sensing signal processor to obtain the screen pressure sensing signal, when the current change value is greater than the first threshold, the central processing unit reduces the voltage sampling frequency of the pressure sensing signal processor, which can reduce the frequency at which the central processing unit obtains the screen pressure sensing signal. That is to say, when the current change value is greater than the first threshold, the screen pressure sensing signal will not be transmitted from the pressure sensing signal processor to the central processing unit, and the central processing unit cannot obtain the screen pressure sensing signal, so it will not perform the corresponding response operation.

[0047] Based on the above solution, since the voltage sampling frequency of the pressure sensing signal processor can be adjusted from a second frequency to a first frequency when the current change value is greater than the first threshold, it can not only reduce the interference of the current mutation in the charging circuit on the touch screen response process, but also ensure that the frequency reduction process only affects the screen deformation process and does not affect other touch screen requirements.

[0048] Optionally, when the first touch screen information includes a screen pressure sensing signal, the central processing unit may adjust the bandwidth of the filter to a preset bandwidth when the current change value is greater than the first threshold, and the preset bandwidth includes the first frequency.

[0049] Specifically, when the current change value is greater than the first threshold, the central processing unit may adjust the frequency working range of the filter to the preset bandwidth, that is, only allow signals within the preset bandwidth to pass through, and specifically filter out the noise at the frequency points corresponding to the charging current.

[0050] It should be noted that the preset bandwidth includes the first frequency, which means that the filter can allow signals transmitted at the first frequency to pass through.

[0051] Based on the above solution, since the bandwidth of the filter can be adjusted to a preset bandwidth when the current change value is greater than the first threshold, the filter can filter out interference signals outside the preset bandwidth and allow the screen pressure sensing signal of the first frequency to pass through. In this way, the interference of the current mutation in the charging line on the touch screen response process can be reduced.

[0052] Step 602: When the current change value is less than or equal to the first threshold, the central processing unit acquires second touch screen information.

[0053] Wherein, the sampling frequency of the second touch screen information is the second frequency, and the first frequency is less than the second frequency.

[0054] Optionally, the situation where the current change value is less than or equal to the first threshold may include: the charging current tends to a stable state, or the electronic device is not in a charging state.

[0055] Optionally, the above second touch screen information may include screen touch coordinates and screen pressure sensing signals.

[0056] When the current change value is less than or equal to the first threshold, the central processing unit can acquire touch screen information transmitted at the second frequency. That is to say, the touch screen information can be transmitted to the central processing unit at the normal frequency.

[0057] In the embodiments of the present application, since the sampling frequency of the first touch screen information is the first frequency, the sampling frequency of the second touch screen information is the second frequency, and the first frequency is less than the second frequency, that is, when a current mutation occurs in the charging line, the sampling frequency of the touch screen information will decrease, and the touch screen information can be staggered from the timing of the current mutation. Therefore, the interference of the current mutation in the charging line on the touch screen information can be avoided, and thus the occurrence of accidental screen touches can be avoided.

[0058] In the signal acquisition method provided by the embodiments of the present application, the execution subject may be a signal acquisition device. In the embodiments of the present application, the signal acquisition method is executed by the signal acquisition device as an example to illustrate the signal acquisition device provided by the embodiments of the present application.

[0059] As Figure 7 shown, the embodiments of the present application further provide a signal acquisition device 700, including: an acquisition module 701; the acquisition module 701 is configured to acquire first touch screen information when the current change value in the charging line is greater than the first threshold, the sampling frequency of the first touch screen information is the first frequency; and acquire second touch screen information when the current change value is less than or equal to the first threshold, the sampling frequency of the second touch screen information is the second frequency; wherein, the first frequency is less than the second frequency.

[0060] Optionally, the first touch screen information includes at least one of the following: screen touch coordinates and screen pressure sensing signals.

[0061] Optionally, the device 700 may further include a processing module 702; when the first touch screen information includes the screen touch coordinates, the processing module 702 is configured to adjust the capacitance sampling frequency of the screen from the second frequency to the first frequency when the current change value is greater than the first threshold.

[0062] Optionally, when the first touch screen information includes the screen pressure sensing signal, the processing module 702 is configured to adjust the voltage sampling frequency of the pressure sensing signal processor from the second frequency to the first frequency when the current change value is greater than the first threshold.

[0063] Optionally, when the first touch screen information includes the screen pressure sensing signal, the processing module 702 is configured to adjust the bandwidth of the filter to a preset bandwidth when the current change value is greater than the first threshold, and the preset bandwidth includes the first frequency.

[0064] In the embodiment of the present application, since the sampling frequency of the first touch screen information is the first frequency, the sampling frequency of the second touch screen information is the second frequency, and the first frequency is less than the second frequency, that is, when a current mutation occurs in the charging line, the sampling frequency of the touch screen information will decrease, and the touch screen information can be staggered from the timing of the current mutation. Therefore, the current mutation of the charging line can be prevented from interfering with the touch screen information, thereby avoiding the occurrence of accidental touch on the screen.

[0065] The signal acquisition device in the embodiment of the present application may be an electronic device or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a vehicle-mounted electronic device, a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and may also be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiment of the present application does not make specific limitations.

[0066] The signal acquisition device in the embodiments of the present application can be a device with an operating system. The operating system can be the Android operating system, the iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

[0067] The signal acquisition device provided by the embodiments of the present application can implement Figure 6 each process implemented by the method embodiments. To avoid repetition, details are not described herein again.

[0068] Optionally, as Figure 8 shown, the embodiments of the present application further provide an electronic device 800, including a processor 801 and a memory 802. A program or instruction that can run on the processor 801 is stored on the memory 802. When the program or instruction is executed by the processor 801, it implements each step of the above signal acquisition method embodiment and can achieve the same technical effect. To avoid repetition, details are not described herein again.

[0069] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0070] Figure 9 FIG. is a schematic diagram of the hardware structure of an electronic device for implementing the embodiments of the present application.

[0071] The electronic device 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010, etc.

[0072] Those skilled in the art can understand that the electronic device 1000 may further include a power source (such as a battery) for supplying power to each component. The power source can be logically connected to the processor 1010 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 9 The structure of the electronic device shown in does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which are not described herein again.

[0073] Among them, the processor 1010 is configured to obtain first touch screen information when the current change value of the charging line is greater than a first threshold, and the sampling frequency of the first touch screen information is a first frequency; when the current change value is less than or equal to the first threshold, obtain second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; wherein, the first frequency is less than the second frequency.

[0074] In the embodiment of the present application, since the sampling frequency of the first touch screen information is the first frequency, the sampling frequency of the second touch screen information is the second frequency, and the first frequency is less than the second frequency, that is, when a current mutation occurs in the charging circuit, the sampling frequency of the touch screen information will decrease, and the touch screen information can be staggered from the timing of the current mutation. Therefore, the interference of the current mutation in the charging circuit on the touch screen information can be avoided, thereby avoiding the occurrence of accidental touch on the screen.

[0075] Optionally, when the first touch screen information includes the screen touch coordinates, the processor 1010 is configured to adjust the capacitance sampling frequency of the screen from the second frequency to the first frequency when the current change value is greater than the first threshold.

[0076] In the embodiment of the present application, since the capacitance sampling frequency of the screen can be adjusted from the second frequency to the first frequency, when the current change value is greater than the first threshold, the frequency at which the central processing unit obtains the screen touch coordinates decreases. In this way, the interference of the current mutation in the charging circuit on the touch screen response process can be reduced.

[0077] Optionally, when the first touch screen information includes the screen pressure sensing signal, the processor 1010 is configured to adjust the voltage sampling frequency of the pressure sensing signal processor from the second frequency to the first frequency when the current change value is greater than the first threshold.

[0078] In the embodiment of the present application, since the voltage sampling frequency of the pressure sensing signal processor can be adjusted from the second frequency to the first frequency when the current change value is greater than the first threshold, not only can the interference of the current mutation in the charging circuit on the touch screen response process be reduced, but also it can be ensured that the frequency reduction process only affects the screen deformation process and does not affect other touch screen requirements.

[0079] Optionally, when the first touch screen information includes the screen pressure sensing signal, the processor 1010 is configured to adjust the bandwidth of the filter to a preset bandwidth when the current change value is greater than the first threshold, and the preset bandwidth includes the first frequency.

[0080] In the embodiment of the present application, since the bandwidth of the filter can be adjusted to a preset bandwidth when the current change value is greater than the first threshold, the filter can filter out interference signals outside the preset bandwidth and allow the screen pressure sensing signal with the first frequency to pass through. In this way, the interference of the current mutation in the charging circuit on the touch screen response process can be reduced.

[0081] It should be understood that in the embodiments of the present application, the input unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042. The graphics processor 10041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. The other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0082] The memory 1009 can be used to store software programs and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both a volatile and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1009 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memories.

[0083] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1010 either.

[0084] The embodiments of the present application also provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned signal acquisition method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0085] Among them, the processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc.

[0086] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above signal acquisition method embodiment, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0087] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0088] The embodiments of the present application provide a computer program product. The program product is stored in a storage medium and is executed by at least one processor to implement each process of the above signal acquisition method embodiment, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0089] It should be noted that in this article, the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article, or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0090] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the related technology, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0091] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A signal acquisition method, characterized in that, Applied to a signal acquisition circuit, the signal acquisition circuit includes a charging line and a central processing unit, and the charging line is connected to the central processing unit; the method includes: When the current change value of the charging line is greater than a first threshold, the central processing unit acquires first touch screen information, and the sampling frequency of the first touch screen information is a first frequency; When the current change value is less than or equal to the first threshold, the central processing unit acquires second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; Wherein, the first frequency is less than the second frequency; The first touch screen information includes at least one of the following: screen touch coordinates and screen pressure sensing signals; When the sampling frequency of the screen touch coordinates acquired by the central processing unit is the first frequency, or when the sampling frequency of the screen pressure sensing signal acquired by the central processing unit is the first frequency, the central processing unit does not perform a touch screen response operation.

2. The signal acquisition method according to claim 1, wherein The signal acquisition circuit further includes a screen, and the screen is connected to the central processing unit; When the first touch screen information includes the screen touch coordinates, before the central processing unit acquires the first touch screen information, the method further includes: When the current change value is greater than the first threshold, adjusting the capacitance sampling frequency of the screen from the second frequency to the first frequency.

3. The signal acquisition method according to claim 1, wherein The signal acquisition circuit further includes a pressure sensing signal processor, and the pressure sensing signal processor is connected to the central processing unit; When the first touch screen information includes the screen pressure sensing signal, before the central processing unit acquires the first touch screen information, the method further includes: When the current change value is greater than the first threshold, adjusting the voltage sampling frequency of the pressure sensing signal processor from the second frequency to the first frequency.

4. The signal acquisition method according to claim 1, wherein The signal acquisition circuit further includes a filter, a first connection end of the filter is connected to the pressure sensing signal processor, a second connection end is connected to a pressure sensing module, the pressure sensing module is connected to the screen, and a third connection end of the filter is connected to the central processing unit; When the first touch screen information includes the screen pressure sensing signal, before the central processing unit acquires the first touch screen information, the method further includes: When the current change value is greater than the first threshold, adjusting the bandwidth of the filter to a preset bandwidth, and the preset bandwidth includes the first frequency.

5. A signal acquisition device, characterized in that, Includes: An acquisition module; the acquisition module is used for: When the current change value of the charging line is greater than a first threshold, acquiring first touch screen information, and the sampling frequency of the first touch screen information is a first frequency; When the current change value is less than or equal to the first threshold, acquiring second touch screen information, and the sampling frequency of the second touch screen information is a second frequency; Wherein, the first frequency is less than the second frequency; The first touch screen information includes at least one of the following: screen touch coordinates and screen pressure sensing signals; When the sampling frequency of the screen touch coordinates acquired by the central processing unit is the first frequency, or when the sampling frequency of the screen pressure sensing signal acquired by the central processing unit is the first frequency, the central processing unit does not perform a touch screen response operation.

6. The signal acquisition device according to claim 5, characterized in that The device further includes a processing module; in the case where the first touch screen information includes the screen touch coordinates, the processing module is configured to adjust the capacitance sampling frequency of the screen from the second frequency to the first frequency when the current change value is greater than the first threshold.

7. The signal acquisition device according to claim 5, wherein The device further includes a processing module; in the case where the first touch screen information includes the screen pressure sensing signal, the processing module is configured to adjust the voltage sampling frequency of the pressure sensing signal processor from the second frequency to the first frequency when the current change value is greater than the first threshold.

8. The signal acquisition device according to claim 5, wherein The device further includes a processing module; in the case where the first touch screen information includes the screen pressure sensing signal, the processing module is configured to adjust the bandwidth of the filter to a preset bandwidth when the current change value is greater than the first threshold, and the preset bandwidth includes the first frequency.

9. An electronic device, characterized in that, It includes a processor and a memory, and the memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, it implements the signal acquisition method according to any one of claims 1-4.

10. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium. When the program or instruction is executed by the processor, it implements the signal acquisition method according to any one of claims 1-4.

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