CN111245551A

CN111245551A - Signal processing method, signal processing device, mobile terminal and storage medium

Info

Publication number: CN111245551A
Application number: CN202010135114.2A
Authority: CN
Inventors: 周意保
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-06-05
Anticipated expiration: 2040-03-02
Also published as: CN111245551B

Abstract

The disclosure provides a signal processing method, a signal processing device, a mobile terminal and a computer readable storage medium, and belongs to the technical field of communication. The signal processing method is applied to a mobile terminal with a communication function, and comprises the following steps: receiving a signal to be processed when the mobile terminal is in communication with the outside; analyzing the frequency spectrum data of the signal to be processed; acquiring frequency spectrum data of a corresponding interference signal according to the working state of the mobile terminal; and acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal. The method and the device can process the communication signal of the mobile terminal under different working states and application scenes so as to remove the interference signal therein and improve the communication quality.

Description

Signal processing method, signal processing device, mobile terminal and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a signal processing method, a signal processing apparatus, a mobile terminal, and a computer-readable storage medium.

Background

With the rapid development of mobile terminals such as smart phones and tablet computers, functional components built in the mobile terminals are increasing, such as an LCD (Liquid Crystal Display), a fingerprint recognizer, a front/back camera, a motor, a USB (Universal Serial Bus) port, and the like, and accordingly, the problem of interference generated by the functional components on communication signals of the mobile terminals is also increasing.

In order to obtain a clean communication signal and improve the communication quality, the signal is usually processed. In the related art, the signal processing generally adopts a filtering, masking and frequency hopping manner. However, each approach has limitations. The filtering is the most common signal processing mode, and the interference signals which can be filtered by the filtering are very limited; the interference signal is shielded, the design requirement on the internal structure of the mobile terminal is high, other functions are possibly affected, and the auxiliary material cost and the production cost are also increased; when the frame hopping is adopted for signal processing, external equipment is often required to support frequency hopping, so that the application scene is greatly limited, and motor interference cannot be solved.

Therefore, how to adopt a reasonable and effective signal processing method to obtain a pure useful signal is an urgent problem to be solved in the prior art.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure provides a signal processing method, a signal processing apparatus, a mobile terminal, and a computer-readable storage medium, which overcome the problems of poor signal processing effect or high requirements for hardware structure and application scenarios in the related art at least to some extent.

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

According to a first aspect of the present disclosure, there is provided a signal processing method applied to a mobile terminal having a communication function, the method including: receiving a signal to be processed when the mobile terminal is in communication with the outside; analyzing the frequency spectrum data of the signal to be processed; acquiring frequency spectrum data of a corresponding interference signal according to the working state of the mobile terminal; and acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal.

According to a second aspect of the present disclosure, there is provided a signal processing apparatus configured in a mobile terminal having a communication function, the apparatus comprising: the signal receiving module is used for receiving a signal to be processed when the mobile terminal is in communication with the outside; the signal analysis module is used for analyzing the frequency spectrum data of the signal to be processed; the data acquisition module is used for acquiring the frequency spectrum data of the corresponding interference signal according to the working state of the mobile terminal; and the signal processing module is used for acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal.

According to a third aspect of the present disclosure, there is provided a mobile terminal comprising: a communication module; a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the above-described signal processing method via execution of the executable instructions.

According to a fourth aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described signal processing method.

Exemplary embodiments of the present disclosure have the following advantageous effects:

when the mobile terminal is in communication with the outside, receiving a signal to be processed; analyzing the frequency spectrum data of the signal to be processed; acquiring frequency spectrum data of a corresponding interference signal according to the working state of the mobile terminal; and acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal. On one hand, the working state of the mobile terminal is determined, the signal to be processed corresponds to the interference signal, and then the target signal is obtained through the frequency spectrum data processing of the two signals, so that the separation of the interference signal with strong pertinence is realized, the communication quality is improved, the mobile terminal can be suitable for different working states and scenes, and the flexibility is high. On the other hand, the exemplary embodiment belongs to post-processing of signals, and does not need to modify the hardware structure of the mobile terminal or set an additional shielding device, so that the implementation cost is low. On the other hand, the implementation process of the exemplary embodiment is simple, the operation complexity is low, and the practicability is high.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1 schematically illustrates a schematic diagram of a system architecture of an exemplary embodiment of the present disclosure;

fig. 2 schematically illustrates a mobile terminal for implementing a signal processing method in the present exemplary embodiment;

fig. 3 schematically shows a flow chart of a signal processing method in the present exemplary embodiment;

fig. 4 schematically shows a sub-flowchart of a signal processing method in the present exemplary embodiment;

fig. 5 schematically shows a flowchart of another signal processing method in the present exemplary embodiment;

fig. 6 schematically shows a frequency spectrum diagram of an interference signal in the present exemplary embodiment;

fig. 7 schematically shows a frequency spectrum diagram of a signal to be processed in the present exemplary embodiment;

FIG. 8 schematically illustrates a diagram of determining a target signal in the present exemplary embodiment;

fig. 9 is a block diagram schematically showing the configuration of a signal processing apparatus in the present exemplary embodiment;

fig. 10 schematically illustrates an electronic device for implementing the above-described method in the present exemplary embodiment;

fig. 11 schematically illustrates a computer-readable storage medium for implementing the above-described method in the present exemplary embodiment.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

In the related art, the following three methods are generally adopted to process the interference signal:

(1) filtering: filtering refers to a process of filtering out frequencies in a specific band in a signal, and is an important way to suppress and prevent electromagnetic interference. The interference can be eliminated from the source by reserving a filter network or an industrial module suppression network aiming at power supply interference, control signal line crosstalk and MIPI (Mobile Industry Processor Interface) signals of an LCD (liquid crystal display) and a front camera/rear camera, so that the purpose of interference protection is realized. However, if the frequency coincidence of the interference signals and the communication signal is high, or the interference signals cover a wide frequency band, it is difficult to achieve effective filtering.

(2) Shielding: aiming at the problem that the filtering cannot be solved, the conductive cloth or the copper foil can be attached to the propagation path to block the propagation path from interfering to the antenna. In a general scheme, chips such as DDR (Double Data Rate) and AP (Application Processor) are shielded from interference by a shield case, and a Driver IC (Driver Integrated Circuit Chip) of TPIC (Touch panel Integrated Circuit) and LCD is shielded and grounded nearby by a wave-absorbing material or a copper foil. Therefore, the design requirement on the internal structure of the mobile terminal is higher, and when the interference signal is shielded, the transmission of other signals can be influenced, so that the normal use of other functions is influenced, and the auxiliary material cost and the production cost are increased.

(3) Frequency hopping: the frame skipping refers to adjusting the frequency multiplication of the working frequency of a related interference source through software to avoid falling into a receiving channel, so that the electromagnetic interference protection is realized. The MIPI interference of the LCD, the TPIC TX coding interference and the MIPI interference of the front camera and the rear camera are all caused by the fact that the frequency multiplication of the working frequency division falls into a receiving channel, and the electromagnetic interference is avoided by adjusting the frequency of the working fundamental frequency through software. Therefore, in this method, the interference source is required to support frequency hopping, so that application scenarios are limited, and when the number of interference sources is large, the application is inconvenient.

In view of one or more of the above problems, the exemplary embodiments of the present disclosure provide a signal processing method and a signal processing apparatus for processing a communication signal to reduce or eliminate an interference signal therein when a mobile terminal communicates with the outside, so as to obtain a relatively pure target signal. Fig. 1 shows a system architecture diagram of an environment in which the method and apparatus operate. As shown in fig. 1, the system architecture 100 may include: mobile terminal 110, base station 120. The mobile terminal 110 may be various electronic devices having a communication function, including but not limited to a smart phone having a communication function, a smart watch, a tablet computer into which a SIM (Subscriber Identity Module) card can be inserted, an interphone, and the like. The base station 120 is used for interacting with the mobile terminal 110 to implement communication. It should be noted that fig. 1 shows a scenario in which a mobile terminal communicates with a base station, and the exemplary embodiment may also be applied to a scenario in which two mobile terminals communicate end-to-end without going through the base station, for example, communication between two interphones, etc.

It should be understood that the number of mobile terminals, base stations in fig. 1 is merely illustrative. There may be any number of mobile terminals, base stations, according to practical needs. For example, the base station 120 may be a base station cluster formed by a plurality of base stations, and the like.

The signal processing method provided by the embodiment of the present disclosure may be executed by the mobile terminal 110, and the exemplary embodiment of the present disclosure provides a mobile terminal for implementing the signal processing method and apparatus. The mobile terminal includes at least a communication module, a processor, and a memory. The communication module is used for communicating with an external base station or other terminals; the memory is used for storing executable instructions of the processor; the processor is configured to perform the signal processing method via execution of executable instructions.

The mobile terminal may be implemented in various forms, and may include, for example, a mobile device such as a smartphone, a tablet, a Personal Digital Assistant (PDA), a navigation device, a wearable device, a drone, and the like. The following takes the mobile terminal 200 in fig. 2 as an example, and exemplifies the configuration of the mobile terminal. In other embodiments, mobile terminal 200 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware. The interfacing relationship between the components is only schematically illustrated and does not constitute a structural limitation of the mobile terminal 200. In other embodiments, the mobile terminal 200 may also interface differently than shown in fig. 2, or a combination of multiple interfaces.

As shown in fig. 2, the mobile terminal 200 may specifically include: a processor 210, an internal memory 221, an external memory interface 222, a Universal Serial Bus (USB) interface 230, a charging management Module 240, a power management Module 241, a battery 242, an antenna 1, an antenna 2, a mobile communication Module 250, a wireless communication Module 260, an audio Module 270, a speaker 271, a microphone 272, a microphone 273, an earphone interface 274, a sensor Module 280, a display 290, a camera Module 291, a pointer 292, a motor 293, a button 294, and a Subscriber Identity Module (SIM) card interface 295. Wherein the sensor module 280 may include a depth sensor 2801, a pressure sensor 2802, a gyroscope sensor 2803, a barometric pressure sensor 2804, and the like.

Processor 210 may include one or more processing units, such as: the Processor 210 may include an Application Processor (AP), a modem Processor, a Graphics Processor (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband Processor, and/or a Neural-Network Processing Unit (NPU), and the like. The different processing units may be separate devices or may be integrated into one or more processors.

The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 210 for storing instructions and data. The memory may store instructions for implementing six modular functions: detection instructions, connection instructions, information management instructions, analysis instructions, data transmission instructions, and notification instructions, and execution is controlled by processor 210. In some embodiments, the memory in processor 210 is a cache memory. The memory may hold instructions or data that have just been used or recycled by processor 210. If the processor 210 needs to reuse the instruction or data, it may be called directly from memory. Avoiding repeated accesses reduces the latency of the processor 210, thereby increasing the efficiency of the system.

In some implementations, the processor 210 may include one or more interfaces. The Interface may include an Integrated Circuit (I2C) Interface, an Inter-Integrated Circuit built-in audio (I2S) Interface, a Pulse Code Modulation (PCM) Interface, a Universal Asynchronous Receiver/Transmitter (UART) Interface, a Mobile Industry Processor Interface (MIPI), a General-purpose input/Output (GPIO) Interface, a Subscriber Identity Module (SIM) Interface, and/or a Universal Serial Bus (USB) Interface, etc. Connections are made with other components of mobile terminal 200 through different interfaces.

The USB interface 230 is an interface conforming to the USB standard specification, and may specifically be a MiniUSB interface, a microsusb interface, a USB type c interface, or the like. The USB interface 230 may be used to connect a charger to charge the mobile terminal 200, may also be connected to an earphone to play audio through the earphone, and may also be used to connect the mobile terminal 200 to other electronic devices, such as a computer and a peripheral device.

The charge management module 240 is configured to receive a charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 240 may receive charging input from a wired charger via the USB interface 230. In some wireless charging embodiments, the charging management module 240 may receive a wireless charging input through a wireless charging coil of the mobile terminal 200. The charging management module 240 may also supply power to the electronic device through the power management module 241 while charging the battery 242.

The power management module 241 is used for connecting the battery 242, the charging management module 240 and the processor 210. The power management module 241 receives the input of the battery 242 and/or the charging management module 240, and supplies power to the processor 210, the internal memory 221, the display screen 290, the camera module 291, the wireless communication module 260, and the like. The power management module 241 may also be used to monitor parameters such as battery capacity, battery cycle number, battery state of health (leakage, impedance), etc. In other embodiments, the power management module 241 may also be disposed in the processor 210. In other embodiments, the power management module 241 and the charging management module 240 may be disposed in the same device.

The wireless communication function of the mobile terminal 200 may be implemented by the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in mobile terminal 200 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 250 may provide a solution including 2G/3G/4G/5G wireless communication applied on the mobile terminal 200. The mobile communication module 250 may include at least one filter, a switch, a power Amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 250 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 250 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 250 may be disposed in the processor 210. In some embodiments, at least some of the functional modules of the mobile communication module 250 may be disposed in the same device as at least some of the modules of the processor 210.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 271, the receiver 272, etc.) or displays an image or video through the display screen 290. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be separate from the processor 210, and may be disposed in the same device as the mobile communication module 250 or other functional modules.

The Wireless Communication module 260 may provide solutions for Wireless Communication applied to the mobile terminal 200, including Wireless Local Area Networks (WLANs) (e.g., Wireless Fidelity (Wi-Fi) Networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module 260 may be one or more devices integrating at least one communication processing module. The wireless communication module 260 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 210. The wireless communication module 260 may also receive a signal to be transmitted from the processor 210, frequency-modulate and amplify the signal, and convert the signal into electromagnetic waves via the antenna 2 to radiate the electromagnetic waves.

In some embodiments, antenna 1 of the mobile terminal 200 is coupled to the mobile communication module 250 and antenna 2 is coupled to the wireless communication module 260, such that the mobile terminal 200 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include Global System for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Long Term Evolution (Long Term Evolution, LTE), New air interface (New Radio, NR), BT, GNSS, WLAN, NFC, FM, and/or IR technology, etc. GNSS may include Global positioning Satellite System (GPS), Global Navigation Satellite System (GLONASS), Beidou Navigation Satellite System (BDS), Quasi-Zenith Satellite System (QZSS), and/or Satellite Based Augmentation System (SBAS).

The mobile terminal 200 implements a display function through the GPU, the display screen 290, the application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display screen 290 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 290 is used to display images, video, etc. The display screen 290 includes a display panel. The Display panel may be a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), an Active matrix Organic Light-Emitting Diode (Active-matrix Organic Light-Emitting Diode, AMOLED), a flexible Light-Emitting Diode (FLED), a miniature, a Micro-o led, a Quantum dot Light-Emitting Diode (QLED), or the like. In some embodiments, the mobile terminal 200 may include 1 or N display screens 290, N being a positive integer greater than 1.

The mobile terminal 200 may implement a photographing function through the ISP, the camera module 291, the video codec, the GPU, the display screen 290, the application processor, and the like.

The ISP is used to process data fed back by the camera module 291. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in the camera module 291.

The camera module 291 is used to capture still images or videos. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a Complementary Metal-Oxide-Semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the mobile terminal 200 may include 1 or N camera modules 291, where N is a positive integer greater than 1, and if the mobile terminal 200 includes N cameras, one of the N cameras is a main camera.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the mobile terminal 200 selects a frequency point, the digital signal processor is used to perform fourier transform or the like on the frequency point energy.

Video codecs are used to compress or decompress digital video. The mobile terminal 200 may support one or more video codecs. In this way, the mobile terminal 200 may play or record video in a variety of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The external memory interface 222 may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the mobile terminal 200. The external memory card communicates with the processor 210 through the external memory interface 222 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

Internal memory 221 may be used to store computer-executable program code, which includes instructions. The internal memory 221 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (e.g., audio data, a phonebook, etc.) created during use of the mobile terminal 200, and the like. In addition, the internal memory 221 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk Storage device, a Flash memory device, a Universal Flash Storage (UFS), and the like. The processor 210 executes various functional applications of the mobile terminal 200 and data processing by executing instructions stored in the internal memory 221 and/or instructions stored in a memory provided in the processor.

The mobile terminal 200 may implement an audio function through the audio module 270, the speaker 271, the receiver 272, the microphone 273, the earphone interface 274, the application processor, and the like. Such as music playing, recording, etc.

Audio module 270 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. Audio module 270 may also be used to encode and decode audio signals. In some embodiments, the audio module 270 may be disposed in the processor 210, or some functional modules of the audio module 270 may be disposed in the processor 210.

The speaker 271, also called "horn", is used to convert the audio electrical signal into a sound signal. The mobile terminal 200 can listen to music through the speaker 271 or listen to a hands-free call.

The receiver 272, also called "earpiece", is used to convert the electrical audio signal into an acoustic signal. When the mobile terminal 200 receives a call or voice information, it is possible to receive voice by placing the receiver 272 close to the human ear.

The microphone 273, also known as a "microphone," is used to convert sound signals into electrical signals. When making a call or transmitting voice information, the user can input a voice signal to the microphone 273 by sounding a voice signal near the microphone 273 through the mouth. The mobile terminal 200 may be provided with at least one microphone 273. In other embodiments, the mobile terminal 200 may be provided with two microphones 273, which may implement a noise reduction function in addition to collecting sound signals. In other embodiments, the mobile terminal 200 may further include three, four or more microphones 273 for collecting sound signals, reducing noise, identifying sound sources, and implementing directional recording functions.

The earphone interface 274 is used to connect wired earphones. The headset interface 274 may be a USB interface 230, or may be a 3.5mm Open Mobile Terminal Platform (OMTP) standard interface, or a Cellular Telecommunications Industry Association of america (CTIA) standard interface.

The depth sensor 2801 is used to acquire depth information of a scene. In some embodiments, a depth sensor may be provided to the camera module 291.

The pressure sensor 2802 is used to sense a pressure signal and convert the pressure signal into an electrical signal. In some embodiments, pressure sensor 2802 may be disposed on display screen 290. Pressure sensor 2802 can be of a wide variety, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like.

The gyro sensor 2803 may be used to determine a motion gesture of the mobile terminal 200. In some embodiments, the angular velocity of the mobile terminal 200 about three axes (i.e., x, y, and z axes) may be determined by the gyroscope sensor 2803. The gyro sensor 2803 may be used for photographing anti-shake. Illustratively, when the shutter is pressed, the gyro sensor 2803 detects the shake angle of the mobile terminal 200, calculates the distance to be compensated for by the lens module according to the shake angle, and allows the lens to counteract the shake of the mobile terminal 200 through a reverse motion, thereby achieving anti-shake. The gyro sensor 2803 may also be used for navigation, somatosensory gaming scenes.

The air pressure sensor 2804 is used to measure air pressure. In some embodiments, mobile terminal 200 may calculate altitude, aid in positioning and navigation, from barometric pressure values measured by barometric pressure sensor 2804.

In addition, other functional sensors, such as a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc., may be disposed in the sensor module 280 according to actual needs.

The keys 294 include a power-on key, a volume key, and the like. The keys 294 may be mechanical keys. Or may be touch keys. The mobile terminal 200 may receive a key input, and generate a key signal input related to user setting and function control of the mobile terminal 200.

The motor 293 may generate a vibration prompt, such as a vibration prompt for incoming call, alarm clock, receiving information, etc., and may also be used for touch vibration feedback, such as touch operations applied to different applications (e.g., photographing, game, audio playing, etc.), or touch operations applied to different areas of the display screen 290, which may correspond to different vibration feedback effects. The touch vibration feedback effect may support customization.

Indicator 292 may be an indicator light that may be used to indicate a state of charge, a change in charge, or may be used to indicate a message, missed call, notification, etc.

The SIM card interface 295 is used to connect a SIM card. The SIM card can be attached to and detached from the mobile terminal 200 by being inserted into the SIM card interface 295 or being pulled out of the SIM card interface 295. The mobile terminal 200 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 295 may support a Nano SIM card, a Micro SIM card, a SIM card, etc. Multiple cards can be inserted into the same SIM card interface 295 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 295 may also be compatible with different types of SIM cards. The SIM card interface 295 may also be compatible with external memory cards. The mobile terminal 200 interacts with the network through the SIM card to implement functions such as communication and data communication. In some embodiments, the mobile terminal 200 employs eSIM, namely: an embedded SIM card. The eSIM card may be embedded in the mobile terminal 200 and may not be separated from the mobile terminal 200.

The signal processing method of the present exemplary embodiment is further described with reference to fig. 3, and as shown in fig. 3, the method may include the following steps S310 to S340:

step S310, when the mobile terminal is in communication with the outside, the signal to be processed is received.

The mobile terminal and the external communication refer to a behavior that the mobile terminal performs signal transmission with a device other than the mobile terminal, and may include communication between the mobile terminal and a base station, for example, when making a call, receiving and sending a short message, or using an operator traffic to surf the internet, the mobile terminal receives a signal sent by the base station, and may also include end-to-end communication between the mobile terminal and the mobile terminal, for example, when an airport worker makes a call through a wireless interphone, the mobile terminal receives a signal sent by another mobile terminal. In external communication, the mobile terminal may receive a signal to be processed through the antenna, where the signal is generally an externally incoming signal, but is interfered by a local interference source during reception, and thus, a component of an interference signal may be mixed in the signal to be processed. The local interference source refers to a functional component of the mobile terminal which may generate interference to the communication signal, and includes built-in components such as a camera, a microphone, a speaker or a display screen, and also includes peripheral components such as an earphone and a handle. For example, when a mobile phone is in a video call, devices such as a camera and a speaker that are turned on may interfere with a call signal received by an antenna, or a mobile phone may also interfere with a signal when receiving/sending a short message in a charging state.

Step S320, analyzing the spectrum data of the signal to be processed.

The spectral data may represent a time domain signal of the signal to be processed in a frequency domain, and is used for reflecting data of the frequency and intensity (which may be represented by an amplitude or power of the signal or the like) of the signal to be processed, and may be represented in a form of a spectrogram. In this exemplary embodiment, after receiving a signal to be processed through an antenna, a mobile terminal may perform preprocessing such as antenna coupling, filtering, amplifying, and the like on the signal to be processed, and then down-convert the signal to a baseband to obtain a baseband signal of the signal to be processed, and finally process the baseband signal of the signal to be processed through a baseband module disposed in the mobile terminal to obtain spectrum data of the signal to be processed, where the spectrum data may include intensities of the signal to be processed at different frequencies to reflect intensity changes of the signal to be processed.

Step S330, acquiring spectrum data of the corresponding interference signal according to the operating state of the mobile terminal.

When the mobile terminal actually works, multiple functions are usually turned on, and the local interference has different influences on the signal to be processed under different functions, for example, the local interference is different in a working state where a camera, a speaker and a microphone are simultaneously turned on and in a working state where only the microphone is turned on. Therefore, in the present exemplary embodiment, in order to determine a clean signal in the signal to be processed currently, spectrum data of a corresponding interference signal, that is, a signal that affects the communication signal and is generated by the local interference, may be obtained according to the current operating state of the mobile terminal. The method for acquiring the frequency spectrum data of the interference signal may be various, for example, the mobile terminal may measure the interference signal in the current working state in each working state to determine the frequency spectrum data of the interference signal; the interference signal of the mobile terminal in each working state may also be measured in advance, the spectrum data of the mobile terminal may be determined, and an interference spectrum data table may be established for the mobile terminal, so as to facilitate later query and use, and the like, which is not specifically limited by the present disclosure.

Specifically, in an exemplary embodiment, the step S330 may include the following steps:

detecting a currently started local interference source;

and searching the frequency spectrum data of the interference signal corresponding to the currently opened local interference source in a pre-configured interference signal data table.

During detection, the communication function of the mobile terminal can be closed, and a local interference source to be detected is tested, for example, only when the camera is turned on, the interference signal is measured, and the frequency spectrum data of the interference signal corresponding to the interference signal is obtained; or only under the working state of the camera and the USB charger, the interference signal is measured, and the frequency spectrum data of the corresponding interference signal is obtained. The interference signal data table refers to pre-configured frequency spectrum data including interference signals of the mobile terminal under various local interference sources. In this exemplary embodiment, the spectrum data of the interference signal may be obtained based on the interference signal data table, specifically, a local interference source that may affect the communication signal is determined according to the current operating state of the mobile terminal, and then the corresponding local interference source is searched in the interference signal data table, so as to obtain the spectrum data of the interference signal in the current operating state.

Further, in an exemplary embodiment, the interference signal data table may be configured by:

step S410, receiving radio frequency interference signals under each local interference source combination;

step S420, performing down-conversion on the radio frequency interference signal to obtain a corresponding base frequency interference signal;

step S430, analyzing the frequency spectrum data of the fundamental frequency interference signal, and obtaining the frequency spectrum data of the radio frequency interference signal according to the local oscillation signal frequency used for down-conversion;

step S440, recording the spectrum data of the radio frequency interference signal and the spectrum data of the fundamental frequency interference signal corresponding to each local interference source combination into an interference signal data table.

It is considered that in practical applications, the mobile terminal is not a single local interference source but a superposition of multiple local interference sources when in operation. Therefore, when configuring the interference signal data table, the exemplary embodiment may not only record the spectrum data of the interference signal corresponding to each single local interference source, but also exhaust all possible combinations of local interference sources, and record the spectrum data of the interference signal under each combination of local interference sources. Specifically, during configuration, radio frequency interference signals under each local interference source combination may be received, for example, when the local interference source includes a camera, a display screen, and a microphone, the local interference source combination may include: "camera, display screen, microphone, camera + display screen, camera + microphone, camera + display screen + microphone", under these 6 kinds of local interference source combinations, can receive 6 kinds of corresponding radio frequency interference signals, through processing it respectively, can be these 6 kinds of frequency spectrum data record of base frequency interference signal in the interference signal data sheet. Specifically, during signal processing, in order to reduce the carrier frequency of the signal and remove the carrier frequency, down-conversion processing may be performed on the received radio frequency interference signal to obtain a corresponding baseband interference signal. The mobile terminal may further include a baseband module configured to analyze the baseband interference signal to determine spectrum data of the baseband interference signal. In addition, the frequency spectrum data of the radio frequency interference signal can be determined according to the eigen signal frequency used by the down-conversion. And finally, recording the frequency spectrum data of the fundamental frequency interference signals of the radio frequency interference signals corresponding to each local interference source combination, so as to obtain an interference signal data table. In the exemplary embodiment, the interference signal data table may include a pair of two-dimensional arrays corresponding to each local interference source combination, and specifically may include a frequency and a power value of the radio frequency interference signal, and a frequency and a power value of the baseband interference signal.

In the step S310, the receiving the signal to be processed may include the following steps:

receiving a radio frequency signal to be processed;

correspondingly, the analyzing the spectrum data of the signal to be processed may include the following steps:

carrying out down-conversion on the radio frequency signal to be processed to obtain a corresponding base frequency signal to be processed;

and analyzing the frequency spectrum data of the fundamental frequency to-be-processed signal, and obtaining the frequency spectrum data of the radio frequency to-be-processed signal according to the frequency of the local oscillator signal.

Similar to the processing procedure of the interference signal, the present exemplary embodiment may also process the signal to be processed through the above steps. The mobile terminal receives a radio frequency signal of a signal to be processed through an antenna, carries out down-conversion processing on the radio frequency signal to obtain a corresponding base frequency signal, and analyzes the signal to be processed through an internally arranged base band module to obtain frequency spectrum data of the signal to be processed. Further, spectrum data of the radio frequency signal to be processed is obtained based on the intrinsic signal frequency. In addition, for the convenience of subsequent search, a spectrum data table can be established for the obtained spectrum data of the fundamental frequency signal to be processed and the spectrum data of the radio frequency signal to be processed.

In an exemplary embodiment, before performing down-conversion on the radio frequency interference signal or the radio frequency signal to be processed, any one or more of the following pre-processing may be performed on the radio frequency interference signal or the radio frequency signal to be processed: antenna coupling, filtering and signal amplification.

Generally, the signal received by the mobile terminal is a modulated signal, and therefore, before down-conversion, antenna coupling, filtering and signal amplification processing can be performed on the modulated signal. The filtering can eliminate out-of-band noise, and the signal amplification can amplify in-band signals to facilitate subsequent processing. In addition, in consideration of the amplitude difference between the received signal and the noise, the present disclosure does not specifically limit the sequence of the received signal and the noise when performing one or more of the above preprocessing, for example, if the received signal has a noise amplitude much larger than the signal amplitude, the received signal may be filtered and then amplified; if the received signal has a small amplitude and a small noise amplitude, the signal may be amplified first, filtered, and so on.

Fig. 5 is a schematic diagram illustrating a processing flow of the acquired to-be-processed signal or interference signal by the mobile terminal in the exemplary embodiment, and the mobile terminal may include an antenna module 510, an antenna coupling + filtering module 520, a signal amplifying module 530, a down-conversion module 540, and a baseband module 550. When the mobile terminal measures the interference signal, the method specifically includes: after receiving the interference signal generated by the local interference source 560, the antenna module 510 performs coupling and filtering processing on the interference signal through the antenna coupling and filtering module 520; the interference signal is amplified by the signal amplifying module 530 to obtain P (f)_i) (ii) a Then down-converting the signal to baseband through the down-converting module 540 to obtain P (f)_i-f₀) (ii) a Finally, the baseband module 550 processes the baseband interference signal to obtain corresponding spectrum data, where the spectrogram is shown in fig. 6, where f₀For down-converting the frequency of the eigensignal, P (f)_i) Indicating an interfering signal at frequency f_iThe corresponding power.

Similar to the above process, the process of the mobile terminal for processing the signal to be processed may specifically include: after receiving the signals to be processed generated by the local interference source 560 and the external communication device (e.g., base station) 570, the antenna module 510 performs coupling and filtering processing on the signals through the antenna coupling + filtering module 520; the signal to be processed is amplified by the signal amplifying module 530 to obtain P (f)_s+f_i) (ii) a Then down-converting the signal to baseband through the down-converting module 540 to obtain P (f)_s-f₀)+P(f_i-f₀) (ii) a Finally, the baseband module 550 processes the baseband interference signal to obtain corresponding spectrum data, where the spectrogram is shown in fig. 7, where f₀In order to down-convert the frequency of the intrinsic signal,P(f_s+f_i) The power of the signal to be processed corresponding to different frequencies when the signal to be processed contains interference signals and communication signals is represented.

Step S340, acquiring a target signal from the signal to be processed based on the spectrum data of the signal to be processed and the spectrum data of the interference signal.

The exemplary embodiment may separate the interference signal from the signal to be processed by calculating the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal, so as to obtain the remaining purer communication signal, that is, the target signal. As shown in fig. 8, schematically, signal separation may be performed by subtracting spectral data of a signal to be processed and spectral data of an interference signal. Specifically, the two signals may be subtracted in the frequency domain, and the calculation result may be converted into the time domain, so as to reconstruct the target signal. Or splitting the signal to be processed and the interference signal into a plurality of simple harmonic signals respectively, separating the simple harmonic signals of the interference signal from the simple harmonic signals of the signal to be processed, and superposing the simple harmonic signals to reconstruct the target signal.

In fig. 8, the subtraction of the radio frequency to-be-processed signal and the radio frequency interference signal and the subtraction of the baseband to-be-processed signal and the baseband interference signal are shown. Illustratively, step S140 may include:

and separating the frequency spectrum data of the corresponding radio frequency interference signal from the frequency spectrum data of the radio frequency signal to be processed, and/or separating the frequency spectrum data of the corresponding fundamental frequency interference signal from the frequency spectrum data of the fundamental frequency signal to be processed so as to obtain the frequency spectrum data of the target signal.

The frequency spectrum data of the target signal can be obtained by subtracting the down-converted fundamental frequency interference signal from the down-converted frequency spectrum data of the fundamental frequency to-be-processed signal; the radio frequency spectrum data of the target signal can also be obtained by reducing the radio frequency interference signal before down-conversion by the spectrum data of the radio frequency signal to be processed before down-conversion. According to actual needs, the radio frequency signal of the target signal can be converted into a fundamental frequency signal to determine the spectrum data of the fundamental frequency target signal and the like.

Based on the above description, in the present exemplary embodiment, a signal to be processed is received when the mobile terminal communicates with the outside; analyzing the frequency spectrum data of the signal to be processed; acquiring frequency spectrum data of a corresponding interference signal according to the working state of the mobile terminal; and acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal. On one hand, the working state of the mobile terminal is determined, the signal to be processed corresponds to the interference signal, and then the target signal is obtained through the frequency spectrum data processing of the two signals, so that the separation of the interference signal with strong pertinence is realized, the communication quality is improved, the mobile terminal can be suitable for different working states and scenes, and the flexibility is high. On the other hand, the exemplary embodiment belongs to post-processing of signals, and does not need to modify the hardware structure of the mobile terminal or set an additional shielding device, so that the implementation cost is low. On the other hand, the implementation process of the exemplary embodiment is simple, the operation complexity is low, and the practicability is high.

In an exemplary embodiment, after acquiring the spectrum data of the corresponding interference signal, as shown in fig. 9, the signal processing method may further include the steps of:

step S910, determining the signal intensity of the interference signal in the communication frequency band based on the communication frequency band corresponding to the current communication mode of the mobile terminal, so as to determine whether the interference signal is an effective interference signal;

step S920, if the interference signal is an invalid interference signal, determining that the signal to be processed is a target signal;

in step S930, if the interference signal is a valid interference signal, a step of acquiring a target signal from the signal to be processed based on the spectrum data of the signal to be processed and the spectrum data of the interference signal is performed.

When performing network communication, the mobile terminal may generally have multiple communication modes, i.e., network systems, and the occupied communication frequency bands of the mobile terminal have differences in different systems, for example, the mobile terminal may generally occupy 900/1800/1900MHZ frequency band in GSM system, and may occupy 800MHZ frequency band in CDMA system, etc. Local interferers may, however, generate interfering signals that affect the communication signal. However, in practice, there may be a situation that the interference degree of the local interference source to the communication signal is low or there is no interference, and only when the frequency band of the interference signal falls within the frequency band range of the communication signal, the interference signal can be considered as an effective interference signal, which affects the communication signal, so that the interference signal needs to be removed from the signal to be processed to obtain a pure communication signal; if the interference signal is not an effective interference signal, the signal to be processed does not need to be processed, and on the basis, the problem that the calculated amount is increased due to the fact that target signal extraction is carried out on all the signals to be processed can be solved, so that the processing efficiency of the signal to be processed is improved. The exemplary embodiment may determine, based on a communication frequency band corresponding to a current communication mode, an interference signal to determine whether the interference signal is an effective interference signal, so as to determine whether to process a signal to be processed.

If the signal intensity of the interference signal in the communication frequency band is low, the interference signal basically does not affect the communication signal, and the signal to be processed is not processed; if the signal strength of the interference signal in the communication frequency band is zero, it can be considered that there is no interference signal currently, or the frequency band of the interference signal falls outside the communication frequency band, and there is no effective interference signal in the signal to be processed, so the signal to be processed may not be processed. Generally, an intensity threshold may be set according to experience or actual requirements to measure whether the signal intensity of the interference signal in the communication frequency band reaches an effective standard, and when the intensity threshold is not sufficient, the influence of the interference signal may be ignored, and the signal to be processed is considered to be a pure target signal.

Further, since the communication frequency band is generally a frequency band for the radio frequency signal, when determining whether the interference signal is a valid interference signal, the interference signal (i.e., the radio frequency interference signal) before down-conversion may be compared with the communication frequency band to determine the signal strength of the radio frequency interference signal in the communication frequency band, and then determine whether the interference signal is valid or invalid. When the signal is determined to be an effective interference signal, the interference signal needs to be separated from the signal to be processed, and calculation may be performed through a signal after down-conversion (i.e., a baseband interference signal), for example, the baseband interference signal is separated from the signal to be processed at a baseband frequency to obtain a target signal at the baseband frequency, so that the baseband can directly perform analysis.

An exemplary embodiment of the present disclosure also provides a signal processing apparatus applied to a mobile terminal having a communication function. Referring to fig. 10, the apparatus 1000 may include a signal receiving module 1010 for receiving a signal to be processed when the mobile terminal communicates with the outside; a signal analyzing module 1020, configured to analyze frequency spectrum data of the signal to be processed; a data obtaining module 1030, configured to obtain frequency spectrum data of a corresponding interference signal according to a working state of the mobile terminal; the signal processing module 1040 is configured to obtain a target signal from a signal to be processed based on the spectrum data of the signal to be processed and the spectrum data of the interference signal.

In an exemplary embodiment, the data acquisition module includes: the interference source detection unit is used for detecting a currently started local interference source; and the data searching unit is used for searching the frequency spectrum data of the interference signal corresponding to the currently opened local interference source in a pre-configured interference signal data table.

In an exemplary embodiment, the interference signal data table is configured by: receiving radio frequency interference signals under each local interference source combination; carrying out down-conversion on the radio frequency interference signal to obtain a corresponding base frequency interference signal; analyzing the frequency spectrum data of the fundamental frequency interference signal, and obtaining the frequency spectrum data of the radio frequency interference signal according to the local oscillation signal frequency used for down-conversion; and recording the frequency spectrum data of the radio frequency interference signal and the frequency spectrum data of the fundamental frequency interference signal corresponding to each local interference source combination into an interference signal data table.

In an exemplary embodiment, the signal receiving module includes: the signal receiving unit is used for receiving a radio frequency signal to be processed when the mobile terminal is in communication with the outside; the signal analysis module comprises: the down-conversion processing unit is used for performing down-conversion on the radio frequency signal to be processed to obtain a corresponding base frequency signal to be processed; and the data acquisition unit is used for analyzing the frequency spectrum data of the fundamental frequency to-be-processed signal and obtaining the frequency spectrum data of the radio frequency to-be-processed signal according to the frequency of the local oscillator signal.

In an exemplary embodiment, the signal processing module is configured to separate spectrum data of a corresponding radio frequency interference signal from spectrum data of a radio frequency signal to be processed, and/or separate spectrum data of a corresponding baseband frequency interference signal from spectrum data of a baseband signal to be processed, so as to obtain spectrum data of a target signal.

In an exemplary embodiment, the radio frequency interference signal or the radio frequency signal to be processed is pre-processed before down-conversion, by any one or more of the following: antenna coupling, filtering and signal amplification.

In an exemplary embodiment, the signal processing apparatus further includes: the signal judgment module is used for determining the signal strength of the interference signal in a communication frequency band based on the communication frequency band corresponding to the current communication mode of the mobile terminal after acquiring the frequency spectrum data of the corresponding interference signal so as to judge whether the interference signal is an effective interference signal; the signal determination module is used for determining the signal to be processed as a target signal if the interference signal is an invalid interference signal; and if the interference signal is a valid interference signal, executing a step of acquiring a target signal from the signal to be processed based on the spectrum data of the signal to be processed and the spectrum data of the interference signal.

The specific details of each module in the above apparatus have been described in detail in the method section, and details that are not disclosed may refer to the method section, and thus are not described again.

As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.

Exemplary embodiments of the present disclosure also provide a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, various aspects of the disclosure may also be implemented in the form of a program product including program code for causing a terminal device to perform the steps according to various exemplary embodiments of the disclosure described in the "exemplary methods" section above of this specification, when the program product is run on the terminal device, for example, any one or more of the steps in fig. 3, fig. 4 or fig. 9 may be performed.

Referring to fig. 11, a program product 1100 for implementing the above method according to an exemplary embodiment of the present disclosure is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a 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.

Program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.

Claims

1. A signal processing method applied to a mobile terminal with a communication function is characterized by comprising the following steps:

receiving a signal to be processed when the mobile terminal is in communication with the outside;

analyzing the frequency spectrum data of the signal to be processed;

acquiring frequency spectrum data of a corresponding interference signal according to the working state of the mobile terminal;

and acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal.

2. The method according to claim 1, wherein the obtaining the spectrum data of the corresponding interference signal according to the operating state of the mobile terminal includes:

detecting a currently started local interference source;

3. The method of claim 2, wherein the interference signal data table is configured by:

receiving radio frequency interference signals under each local interference source combination;

performing down-conversion on the radio frequency interference signal to obtain a corresponding base frequency interference signal;

analyzing the frequency spectrum data of the fundamental frequency interference signal, and obtaining the frequency spectrum data of the radio frequency interference signal according to the local oscillation signal frequency used for down-conversion;

and recording the frequency spectrum data of the radio frequency interference signal and the frequency spectrum data of the fundamental frequency interference signal corresponding to each local interference source combination into the interference signal data table.

4. The method of claim 3, wherein the receiving the signal to be processed comprises:

receiving a radio frequency signal to be processed;

the analyzing the frequency spectrum data of the signal to be processed includes:

performing down-conversion on the radio frequency signal to be processed to obtain a corresponding base frequency signal to be processed;

and analyzing the frequency spectrum data of the fundamental frequency to-be-processed signal, and obtaining the frequency spectrum data of the radio frequency to-be-processed signal according to the local oscillator signal frequency.

5. The method according to claim 4, wherein the obtaining a target signal from the signal to be processed based on the spectrum data of the signal to be processed and the spectrum data of the interference signal comprises:

and separating the corresponding frequency spectrum data of the radio frequency interference signal from the frequency spectrum data of the radio frequency signal to be processed, and/or separating the corresponding frequency spectrum data of the fundamental frequency interference signal from the frequency spectrum data of the fundamental frequency signal to be processed, so as to obtain the frequency spectrum data of the target signal.

6. The method according to claim 3 or 4, wherein the radio frequency interference signal or the radio frequency signal to be processed is pre-processed before down-conversion by any one or more of the following: antenna coupling, filtering and signal amplification.

7. The method of claim 1, wherein after obtaining the spectrum data of the corresponding interference signal, the method further comprises:

determining the signal intensity of the interference signal in the communication frequency band based on the communication frequency band corresponding to the current communication mode of the mobile terminal so as to judge whether the interference signal is an effective interference signal;

if the interference signal is an invalid interference signal, determining that the signal to be processed is a target signal;

and if the interference signal is an effective interference signal, executing a step of acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal.

8. A signal processing apparatus provided in a mobile terminal having a communication function, the apparatus comprising:

the signal receiving module is used for receiving a signal to be processed when the mobile terminal is in communication with the outside;

the signal analysis module is used for analyzing the frequency spectrum data of the signal to be processed;

the data acquisition module is used for acquiring the frequency spectrum data of the corresponding interference signal according to the working state of the mobile terminal;

and the signal processing module is used for acquiring a target signal from the signal to be processed based on the frequency spectrum data of the signal to be processed and the frequency spectrum data of the interference signal.

9. A mobile terminal, comprising:

a communication module;

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the method of any of claims 1-7 via execution of the executable instructions.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1 to 7.