Filtering circuit, filtering method and device, electronic equipment and storage medium

Abstract

The embodiments of the present disclosure provide a filtering circuit, a filtering method and device, an electronic device, and a storage medium. The filtering circuit includes: a switch module, including a control end, an input end, and multiple output ends, the control end is used to provide a control signal to the switch module to open or close the connection switch between the input end and any one of the multiple output ends, the input end of the switch module is connected to the input end of the filtering circuit; and multiple filters, the input end of each filter is respectively connected to each output end, and the output end of each filter is connected to the output end of the filtering circuit. In the embodiments of the present disclosure, a suitable filter can be selected for filtering the input signal.

Description

Technical Field

[0001] The present disclosure relates to the field of signal processing technology, and in particular to a filtering circuit, a filtering method and device, an electronic device, and a storage medium. Background Art

[0002] The camera modules currently used in mobile terminals all use the host (main control module) to provide a driving signal to the camera module to drive the camera module to work. The camera module is connected to the host through an FPC cable, and the two ends of the FPC are connected by connectors. In addition to the above-mentioned driving signals, the signal lines transmitted by the FPC cable also have other signals. Such mutual interference of signals affects the normal use of the camera. Summary of the invention

[0003] The embodiments of the present disclosure provide a filtering circuit, a filtering method and device, an electronic device, and a storage medium to solve or alleviate one or more technical problems in the prior art.

[0004] As a first aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a filter circuit, including:

[0005] a switch module, comprising a control end, an input end and a plurality of output ends, wherein the control end is used to provide a control signal to the switch module to open or close a connection switch between the input end and any one of the plurality of output ends, and the input end of the switch module is connected to the input end of the filter circuit; and

[0006] A plurality of filters, the input end of each filter is connected to the output end respectively, and the output end of each filter is connected to the output end of the filter circuit.

[0007] In a possible implementation manner, the multiple filters include a first filter and a second filter, wherein an operating frequency band of the first filter is different from an operating frequency band of the second filter.

[0008] In one possible implementation, the multiple filters include a first filter, a second filter, a third filter and a fourth filter, wherein the operating frequency band of the first filter is a frequency band between 660 MHz and 850 MHz, the operating frequency band of the second filter is a frequency band between 850 MHz and 960 MHz, the operating frequency band of the third filter is a frequency band between 1500 MHz and 2100 MHz, and the operating frequency band of the fourth filter is a frequency band between 2300 MHz and 2690 MHz.

[0009] In a possible implementation, the input end of the filter circuit is used to provide a driving signal, and the output end of the filter circuit is used to provide a driving signal obtained after filtering by the filter circuit, and the driving signal is used to drive a camera module in a terminal device to operate.

[0010] As a second aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides an electronic device, including:

[0011] The filter circuit provided by any embodiment of the present disclosure;

[0012] A main control module, comprising a control signal output terminal and a drive signal output terminal, wherein the control signal output terminal is connected to the control terminal of the switch module of the filter circuit, and the drive signal output terminal is connected to the input terminal of the filter circuit;

[0013] The camera module comprises a driving signal input terminal, wherein the driving signal input terminal is connected to the output terminal of the filtering circuit.

[0014] In a possible implementation, the main control module is used to:

[0015] Based on the working mode of the main control module, determining an interference signal of the driving signal provided by the main control module to the camera module;

[0016] Determining a target filter among a plurality of filters in the filtering circuit based on an operating frequency band of the interference signal;

[0017] Based on the target filter, determining a target output terminal among a plurality of output terminals in a switch module in the filter circuit; wherein the target output terminal is connected to an input terminal of the target filter;

[0018] Based on the target output end, determine a control signal provided to the control end of the switch module in the filter circuit, wherein the control signal is used to close the connection switch between the input end of the switch module and the target output end, and to open the connection switch between the input end of the switch module and an output end among the multiple output ends except the target output end.

[0019] As a third aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a filtering method, including:

[0020] Based on the working mode of the main control module, determining an interference signal of the driving signal provided by the main control module to the camera module;

[0021] Based on the operating frequency band of the interference signal, determining a target filter from a plurality of filters in the filter circuit provided in any embodiment of the present disclosure;

[0022] Based on the target filter, determining a target output terminal among a plurality of output terminals in a switch module in the filter circuit; wherein the target output terminal is connected to an input terminal of the target filter;

[0023] Based on the target output end, determine a control signal provided to the control end of the switch module in the filter circuit, wherein the control signal is used to close the connection switch between the input end of the switch module and the target output end, and to open the connection switch between the input end of the switch module and an output end among the multiple output ends except the target output end.

[0024] In a possible implementation, determining the interference signal of the driving signal provided by the main control module to the camera module based on the working mode of the main control module includes one or a combination of the following:

[0025] When the cellular communication module in the main control module is in an operating state, determining that the interference signal includes a cellular signal;

[0026] When the positioning module in the main control module is in a working state, it is determined that the interference signal includes a positioning signal.

[0027] In a possible implementation manner, determining a target filter from a plurality of filters in a filter circuit provided in any embodiment of the present disclosure based on an operating frequency band of the interference signal includes:

[0028] In the case where the interference signal includes a cellular signal and a positioning signal, a target filter is determined in the filtering circuit based on an operating frequency band of the cellular signal and an operating frequency band of the positioning signal.

[0029] As a fourth aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a filtering device, including:

[0030] An interference signal determination module, used to determine an interference signal of a driving signal provided by the main control module to the camera module based on a working mode of the main control module;

[0031] A filter determination module, configured to determine a target filter from among a plurality of filters in the filter circuit provided in any embodiment of the present disclosure based on the operating frequency band of the interference signal;

[0032] A target output terminal module, used for determining a target output terminal among a plurality of output terminals in a switch module in the filter circuit based on the target filter; wherein the target output terminal is connected to an input terminal of the target filter;

[0033] A control signal determination module is used to determine a control signal provided to a control end of a switch module in the filter circuit based on the target output end, wherein the control signal is used to close a connection switch between an input end of the switch module and the target output end, and to open a connection switch between an input end of the switch module and an output end among the multiple output ends except the target output end.

[0034] As a fifth aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to execute the method described in any embodiment of the present disclosure.

[0035] The technical solution provided by the embodiment of the present disclosure provides a filtering circuit, including a switch module and multiple filters, wherein the switch module includes a control end, an input end and multiple output ends, the control end is used to provide a control signal to the switch module to open or close the connection switch between the input end and any one of the multiple output ends, and the input end of the switch module is connected to the input end of the filtering circuit. The input end of each of the filters is respectively connected to each of the output ends, and the output end of each of the filters is connected to the output end of the filtering circuit. Thus, the filtering circuit can select a corresponding filter or filter combination according to the input signal to filter the input signal.

[0036] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0038] Figure 1 is a structural schematic diagram of a filter circuit according to an embodiment of the present disclosure;

[0039] Figure 2 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

[0040] Figure 3 is a flow chart of a filtering method according to an embodiment of the present disclosure;

[0041] Figure 4 It is a structural block diagram of a filtering device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0043] Figure 1 is a structural diagram of a filter circuit according to an embodiment of the present disclosure.

[0044] like Figure 1 As shown, an embodiment of the present disclosure provides a filtering circuit, including a switch module and multiple filters. The switch module includes a control end, an input end and multiple output ends. The control end is used to provide a control signal to the switch module to open or close the connection switch between the input end and any one of the multiple output ends. The input end of the switch module is connected to the input end of the filtering circuit. The input end of each filter is respectively connected to each output end, and the output end of each filter is connected to the output end of the filtering circuit.

[0045] In this example, the control end of the switch module provides a control signal to the switch module to open or close the connection switch between the input end and any one of the multiple output ends, and the input end of the switch module is connected to the input end of the filter circuit. Since the input ends of the filters are connected to the output ends, respectively, the output ends of the filters are connected to the output ends of the filter circuit. Thus, the filter circuit can select a corresponding filter or filter combination according to the input signal to filter the input signal.

[0046] Exemplarily, the switch module may be a single-pole multi-throw switch to enable a path of one of the filters to be turned on. For example, the switch module may be a single-pole four-throw switch.

[0047] Exemplarily, the switch module may be a multi-pole multi-throw switch to achieve the conduction of one or more filters, for example, a double-pole four-throw switch, a three-pole five-throw switch, etc.

[0048] In some embodiments, the frequency band of each filter in the plurality of filters may be the same or different.

[0049] Exemplarily, the plurality of filters include a first filter and a second filter, wherein an operating frequency band of the first filter is different from an operating frequency band of the second filter.

[0050] In this example, the operating frequencies of at least two filters among the plurality of filters are different.

[0051] Exemplarily, the multiple filters include a first filter, a second filter, a third filter and a fourth filter, wherein the operating frequency band of the first filter is a frequency band between 660 MHz and 850 MHz, the operating frequency band of the second filter is a frequency band between 850 MHz and 960 MHz, the operating frequency band of the third filter is a frequency band between 1500 MHz and 2100 MHz, and the operating frequency band of the fourth filter is a frequency band between 2300 MHz and 2690 MHz.

[0052] In this example, ultra-low frequency, low frequency, medium frequency and high frequency filters are respectively set in the filter circuit for selection, which can meet the filtering requirements of various signals. For example, if the goal is to filter out the interference signal of the medium frequency in the signal, the medium frequency filter can be selected. If the goal is to filter out the interference signal of high frequency and low frequency in the signal, a high frequency and low frequency parallel filter combination can be selected.

[0053] In some embodiments, the filter circuit described above can be used to filter out interference signals in a driving signal used to drive a camera module in a terminal device.

[0054] Exemplarily, the input end of the filter circuit is used to provide a driving signal, and the output end of the filter circuit is used to provide a driving signal obtained after filtering by the filter circuit, and the driving signal is used to drive the camera module in the terminal device to work.

[0055] In some embodiments, in order to reduce the impedance of the combined filter, the above filter may select a notch filter.

[0056] Figure 2 is a structural diagram of an electronic device according to an embodiment of the present disclosure;

[0057] like Figure 2 As shown, as a second aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides an electronic device, including:

[0058] The filter circuit provided by any embodiment of the present disclosure;

[0059] A main control module, comprising a control signal output terminal and a drive signal output terminal, wherein the control signal output terminal is connected to the control terminal of the switch module of the filter circuit, and the drive signal output terminal is connected to the input terminal of the filter circuit;

[0060] The camera module comprises a driving signal input terminal, which is connected to the output terminal of the filtering circuit.

[0061] In this example, a filter circuit may be used to filter the driving signal for driving the camera module to prevent other signals in the main control module from interfering with the camera operation.

[0062] In a possible implementation, the main control module is used to:

[0063] Based on the working mode of the main control module, determining an interference signal of a driving signal provided by the main control module to the camera module;

[0064] Determining a target filter among multiple filters in a filter circuit based on an operating frequency band of the interference signal;

[0065] Based on the target filter, determining a target output terminal among a plurality of output terminals in a switch module in a filter circuit; wherein the target output terminal is connected to an input terminal of the target filter;

[0066] Based on the target output terminal, a control signal provided to the control terminal of the switch module in the filter circuit is determined, wherein the control signal is used to close the connection switch between the input terminal of the switch module and the target output terminal, and to open the connection switch between the input terminal of the switch module and an output terminal among multiple output terminals except the target output terminal.

[0067] In this example, according to the working mode of the main control module, the signal causing interference to the driving signal can be determined, and then the working frequency band of the interference signal can be determined, so as to determine which filters are needed to filter the interference of the driving signal.

[0068] In some embodiments, if the cellular communication module in the main control module is in working state, and the camera module is also in working state at the same time, the cellular signal of the cellular communication module will interfere with the driving signal that drives the camera module to work, and the interference of the cellular signal on the driving signal needs to be filtered, and the frequency band of the interference signal is basically in the same frequency band as the frequency band of the cellular signal. For example, the working frequency band of the cellular signal is: 880MHz-915MHz, and the frequency band of the interference signal is 880MHz-915MHz, and the working frequency band of the selected filter is 880MHz-915MHz.

[0069] In some embodiments, if the GPS positioning module in the main control module is in working state, and the camera module is also in working state, then the positioning signal of the GPS positioning module will interfere with the driving signal that drives the camera module to work, and the interference of the positioning signal on the driving signal needs to be filtered, and the frequency band of the interference signal and the frequency band of the positioning signal are basically processed in the same frequency band. For example, the working frequency band of the positioning signal is 1575.42±2MHz, and the frequency band of the interference signal is 1575.42±2MHz, then the working frequency band of the selected filter is 1500MHz to 2100MHz.

[0070] like Figure 2As shown, the camera module Camera and the main control module BB are synchronized by MCLK or PCLK. MCLK is the main clock of the chip in the main control module. PCLK is the sampling clock obtained after MCLK is processed.

[0071] The transmission circuit of the MCLK or PCLK signal is interfered, so that the MCLK or PCLK signal has many harmonic interference signals, which are easily radiated from the FPC bending area or the connector and received by the antenna, resulting in a decrease in receiving sensitivity. At the same time, the strong signal emitted by the antenna will also interfere with the MCLK or PCLK clock signal through the FPC routing, causing the camera to malfunction.

[0072] In order to solve the above problems, Figure 2 As shown in the figure, this example uses the switch SP4T (single-pole four-throw switch) to design four groups of filters (notch filters) together in a compatible manner. The main control module controls the conduction path of SP4T through the GPIO interface. Therefore, each group of filters can be turned on separately, and any combination of filters can be turned on. Moreover, when designing the filter, only the indicators of each group of filters need to be considered, and the system indicators after cascading do not need to be considered, which reduces the difficulty of design. When the mobile phone frequency band works in one of the frequency bands, the main control module only needs to control the Tuner switch to turn on the corresponding filter, which can reduce the insertion loss of the clock routing.

[0073] When ultra-wideband filtering is required, four groups of filters can be turned on at the same time, just like traditional multi-stage filters.

[0074] In this example, by controlling the opening and closing of the path in the switch of the filter circuit through the main control module, different filter circuits can be called when the mobile phone works in different frequency bands, thereby achieving dynamic matching of the filter circuit and the working frequency band of the mobile phone.

[0075] Figure 3 is a flow chart of a filtering method according to an embodiment of the present disclosure.

[0076] like Figure 3 As shown, the present disclosure provides a filtering method, which may include the following steps:

[0077] S310, determining an interference signal of a driving signal provided by the main control module to the camera module based on the working mode of the main control module;

[0078] S320, determining a target filter from a plurality of filters in the filter circuit provided in any embodiment of the present disclosure based on the working frequency band of the interference signal;

[0079] S330, based on the target filter, determining a target output terminal among a plurality of output terminals in a switch module in a filter circuit; wherein the target output terminal is connected to an input terminal of the target filter;

[0080] S340, based on the target output end, determine the control signal provided to the control end of the switch module in the filter circuit, wherein the control signal is used to close the connection switch between the input end of the switch module and the target output end, and to open the connection switch between the input end of the switch module and an output end among multiple output ends except the target output end.

[0081] In this example, according to the working mode of the main control module, the signal causing interference to the driving signal can be determined, and then the working frequency band of the interference signal can be determined, so as to determine which filters are needed to filter the interference of the driving signal.

[0082] Exemplarily, based on the working mode of the main control module, determining the interference signal of the driving signal provided by the main control module to the camera module includes one or a combination of the following:

[0083] When the cellular communication module in the main control module is in an operating state, determining that the interference signal includes a cellular signal;

[0084] When the positioning module in the main control module is in a working state, it is determined that the interference signal includes the positioning signal.

[0085] Exemplarily, based on the working frequency band of the interference signal, determining a target filter from a plurality of filters in the filter circuit provided in any embodiment of the present disclosure includes:

[0086] In the case where the interference signal includes a cellular signal and a positioning signal, a target filter is determined in the filtering circuit based on an operating frequency band of the cellular signal and an operating frequency band of the positioning signal.

[0087] In some embodiments, if the cellular communication module in the main control module is in working state, and the camera module is also in working state at the same time, the cellular signal of the cellular communication module will interfere with the driving signal that drives the camera module to work, and the interference of the cellular signal on the driving signal needs to be filtered, and the frequency band of the interference signal is basically in the same frequency band as the frequency band of the cellular signal. For example, the working frequency band of the cellular signal is: 880MHz-915MHz, and the frequency band of the interference signal is 880MHz-915MHz, and the working frequency band of the selected filter is 880MHz-915MHz.

[0088] In some embodiments, if the GPS positioning module in the main control module is in working state, and the camera module is also in working state, then the positioning signal of the GPS positioning module will interfere with the driving signal that drives the camera module to work, and the interference of the positioning signal on the driving signal needs to be filtered, and the frequency band of the interference signal and the frequency band of the positioning signal are basically processed in the same frequency band. For example, the working frequency band of the positioning signal is 1575.42±2MHz, and the frequency band of the interference signal is 1575.42±2MHz, then the working frequency band of the selected filter is 1500MHz to 2100MHz.

[0089] In some embodiments, since the signal is a time series signal, a corresponding filter can be dynamically selected and activated according to the frequency band where the interference signal of the time series signal at each moment is located, so as to filter the interference signal at that moment.

[0090] Figure 4 is a structural diagram of a filtering device according to an embodiment of the present disclosure.

[0091] like Figure 4 As shown, as a fourth aspect of the embodiment of the present disclosure, the embodiment of the present disclosure provides a filtering device, including:

[0092] An interference signal determination module 410, configured to determine an interference signal of a driving signal provided by the main control module to the camera module based on a working mode of the main control module;

[0093] A filter determination module 420, configured to determine a target filter from among a plurality of filters in the filter circuit provided in any embodiment of the present disclosure based on the operating frequency band of the interference signal;

[0094] A target output terminal module 430 is used to determine a target output terminal among a plurality of output terminals in a switch module in a filter circuit based on a target filter; wherein the target output terminal is connected to an input terminal of the target filter;

[0095] The control signal determination module 440 is used to determine the control signal provided to the control end of the switch module in the filter circuit based on the target output end, wherein the control signal is used to close the connection switch between the input end of the switch module and the target output end, and to open the connection switch between the input end of the switch module and the output end of multiple output ends except the target output end.

[0096] The page layout device provided by the embodiment of the present disclosure also includes modules or units capable of implementing other steps of the above method.

[0097] The functions of each unit, module or sub-module in each device of the embodiments of the present disclosure can be found in the corresponding description in the above method embodiments, and will not be repeated here.

[0098] According to an embodiment of the present disclosure, the present disclosure also provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to execute a method of any embodiment of the present disclosure.

[0099] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0100] The program code for implementing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable atmosphere light adjustment device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0101] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0102] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0103] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0104] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0105] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0106] In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0107] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0108] In the present disclosure, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0109] The disclosure above provides many different embodiments or examples to implement different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0110] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A filter circuit, characterized in that: include: A switch module, comprising a control end, an input end and a plurality of output ends, wherein the control end is used to provide a control signal to the switch module to open or close a connection switch between the input end and any one of the plurality of output ends, and the input end of the switch module is connected to the input end of the filter circuit; as well as A plurality of filters, wherein the input end of each filter is connected to the output end of each filter, and the output end of each filter is connected to the output end of the filter circuit; Among them, the input end of the filtering circuit is used to provide a driving signal, and the output end of the filtering circuit is used to provide a driving signal obtained after filtering by the filtering circuit, and the driving signal is used to drive the camera module in the terminal device to work.

2. The filter circuit according to claim 1, characterized in that: The plurality of filters include a first filter and a second filter, wherein an operating frequency band of the first filter is different from an operating frequency band of the second filter.

3. The filter circuit according to claim 1, characterized in that: The multiple filters include a first filter, a second filter, a third filter and a fourth filter, wherein the operating frequency band of the first filter is a frequency band between 660MHz and 850MHz, the operating frequency band of the second filter is a frequency band between 850MHz and 960MHz, the operating frequency band of the third filter is a frequency band between 1500MHz and 2100MHz, and the operating frequency band of the fourth filter is a frequency band between 2300MHz and 2690MHz.

4. An electronic device, characterized in that: include: The filter circuit according to any one of claims 1 to 3; A main control module, comprising a control signal output terminal and a drive signal output terminal, wherein the control signal output terminal is connected to the control terminal of the switch module of the filter circuit, and the drive signal output terminal is connected to the input terminal of the filter circuit; The camera module comprises a driving signal input terminal, wherein the driving signal input terminal is connected to the output terminal of the filtering circuit.

5. The electronic device according to claim 4, wherein the main control module is used for: Based on the working mode of the main control module, determining an interference signal of the driving signal provided by the main control module to the camera module; Determining a target filter among a plurality of filters in the filtering circuit based on an operating frequency band of the interference signal; Based on the target filter, determining a target output terminal among a plurality of output terminals in a switch module in the filter circuit; wherein the target output terminal is connected to an input terminal of the target filter; Based on the target output end, determine a control signal provided to the control end of the switch module in the filter circuit, wherein the control signal is used to close the connection switch between the input end of the switch module and the target output end, and to open the connection switch between the input end of the switch module and an output end among the multiple output ends except the target output end.

6. A filtering method, characterized in that: include: Based on the working mode of the main control module, determining an interference signal of the driving signal provided by the main control module to the camera module; Based on the operating frequency band of the interference signal, determining a target filter among a plurality of filters in the filter circuit according to any one of claims 1 to 3; Based on the target filter, determining a target output terminal among a plurality of output terminals in a switch module in the filter circuit; wherein the target output terminal is connected to an input terminal of the target filter; Based on the target output end, determine a control signal provided to the control end of the switch module in the filter circuit, wherein the control signal is used to close the connection switch between the input end of the switch module and the target output end, and to open the connection switch between the input end of the switch module and an output end among the multiple output ends except the target output end.

7. The method according to claim 6, characterized in that The determining, based on the working mode of the main control module, the interference signal of the driving signal provided by the main control module to the camera module includes one or a combination of the following: When the cellular communication module in the main control module is in an operating state, determining that the interference signal includes a cellular signal; When the positioning module in the main control module is in a working state, it is determined that the interference signal includes a positioning signal.

8. The method according to claim 7, characterized in that The step of determining a target filter from among a plurality of filters in the filter circuit according to any one of claims 1 to 3 based on the working frequency band of the interference signal comprises: In the case where the interference signal includes a cellular signal and a positioning signal, a target filter is determined in the filtering circuit based on an operating frequency band of the cellular signal and an operating frequency band of the positioning signal.

9. A filtering device, characterized in that: include: An interference signal determination module, used to determine an interference signal of a driving signal provided by the main control module to the camera module based on a working mode of the main control module; A filter determination module, configured to determine a target filter from among a plurality of filters in the filter circuit according to any one of claims 1 to 3 based on an operating frequency band of the interference signal; A target output terminal module, used for determining a target output terminal among a plurality of output terminals in a switch module in the filter circuit based on the target filter; wherein the target output terminal is connected to an input terminal of the target filter; A control signal determination module is used to determine a control signal provided to a control end of a switch module in the filter circuit based on the target output end, wherein the control signal is used to close a connection switch between an input end of the switch module and the target output end, and to open a connection switch between an input end of the switch module and an output end among the multiple output ends except the target output end.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause a computer to execute the method according to any one of claims 6 to 8.

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