Signal transmission method, signal transmission device and storage medium

Abstract

The present disclosure relates to a signal transmission method, a signal transmission device and a storage medium. The signal transmission method is applied to a terminal, and the method comprises: in response to the terminal performing reverse charging on a target device and needing to transmit played audio to the target device for playing, determining a charging signal and an audio signal to be transmitted to the target device; carrying the charging signal and the audio signal in a carrier for reverse charging, and transmitting the charging signal and the audio signal to the target device based on the carrier. Through the present disclosure, when the terminal performs reverse power supply on the target device, the audio signal can be transmitted using the carrier for reverse charging, so that the communication function between the terminal and the target device is further used.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and in particular to a signal transmission method, a signal transmission device, and a storage medium. Background Technology

[0002] Currently, with advancements in charging technology, new wireless charging technologies have emerged. Wireless charging utilizes electromagnetic induction, magnetic field resonance, or radio waves, allowing users to charge their devices without connecting them to a power source via a charging port. Instead, they simply place the device on a wireless charging magnetic base. This technology must comply with the Qi wireless charging standard. Current magnetic wireless charging technologies use a communication frequency of 140kHz between the transmitter and receiver. This frequency can only transmit small data signals, such as charging signals, and cannot transmit large data signals, such as audio signals. This results in the underutilization of the communication function between the transmitter and receiver. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a signal transmission method, a signal transmission device, and a storage medium.

[0004] According to a first aspect of the present disclosure, a signal transmission method is provided, applied to a terminal, comprising:

[0005] In response to the terminal performing reverse charging on the target device and needing to transmit the audio being played to the target device for playback, the terminal determines the charging signal and the audio signal to be transmitted to the target device; the terminal carries the charging signal and the audio signal in a carrier wave for reverse charging, and transmits the charging signal and the audio signal to the target device based on the carrier wave.

[0006] In one embodiment, transmitting the charging signal and the audio signal to the target device on the carrier wave includes: determining a signal to be transmitted on the carrier wave, the signal to be transmitted including a charging signal or an audio signal; determining a reference frequency to match the signal to be transmitted; adjusting the transmission frequency of the signal to be transmitted based on the reference frequency, and modulating the waveform of the carrier wave using frequency shift keying modulation based on the adjusted transmission frequency, wherein different waveforms are used to carry different coded data of the signal to be transmitted; and transmitting the signal to be transmitted to the target device based on the modulated waveform.

[0007] In one embodiment, the signal to be transmitted is a charging signal; determining the reference frequency to match the signal to be transmitted includes: determining the charging protocol used for charging between the terminal and the target device, and determining the default wireless power supply frequency of the charging protocol as the reference frequency to match the charging signal.

[0008] In one embodiment, the signal to be transmitted is an audio signal; determining the reference frequency matching the signal to be transmitted includes: determining the data transmission rate of the audio signal and the audio encoding format of the audio signal; and determining the reference frequency matching the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format.

[0009] In one embodiment, determining a reference frequency to match the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format includes: determining the number of PWM cycles required for a single data transmission based on the data transmission rate of the audio signal; and determining the product between the number of PWM cycles and the maximum data bandwidth as the reference frequency to match the audio signal.

[0010] In one embodiment, adjusting the transmission frequency of the signal to be transmitted based on the reference frequency, and modulating the signal to be transmitted using frequency shift keying modulation based on the adjusted transmission frequency and then transmitting it on the carrier to the target device, includes: maintaining a first transmission frequency during the complete transmission cycle of the carrier transmission and transmitting first coded data of the signal to be transmitted; maintaining a second transmission frequency during the first half of the transmission cycle of the carrier transmission, and maintaining the first transmission frequency during the second half of the transmission cycle of the carrier transmission and transmitting second coded data of the signal to be transmitted; wherein the first transmission frequency is a transmission frequency greater than the reference frequency, and the second transmission frequency is a transmission frequency less than the reference frequency.

[0011] According to a second aspect of the present disclosure, a signal transmission device is provided, applied to a terminal, comprising:

[0012] A determining unit is configured to determine a charging signal and an audio signal to be transmitted to the target device in response to the terminal performing reverse charging on the target device and needing to transmit the audio being played to the target device for playback; a transmitting unit is configured to carry the charging signal and the audio signal in a carrier wave for reverse charging, and transmit the charging signal and the audio signal to the target device based on the carrier wave.

[0013] In one embodiment, the transmission unit transmits the charging signal and the audio signal to the target device on the carrier wave in the following manner: determining a signal to be transmitted on the carrier wave, the signal to be transmitted including a charging signal or an audio signal; determining a reference frequency to match the signal to be transmitted; adjusting the transmission frequency of the signal to be transmitted based on the reference frequency, and modulating the waveform of the carrier wave using frequency shift keying modulation based on the adjusted transmission frequency, wherein different waveforms are used to carry different coded data of the signal to be transmitted; and transmitting the signal to be transmitted to the target device based on the modulated waveform.

[0014] In one embodiment, the signal to be transmitted is a charging signal; the transmission unit determines the reference frequency to match the signal to be transmitted in the following manner: determining the charging protocol used for charging between the terminal and the target device, and determining the default wireless power supply frequency of the charging protocol as the reference frequency to match the charging signal.

[0015] In one embodiment, the signal to be transmitted is an audio signal; the transmission unit determines the reference frequency matching the signal to be transmitted in the following manner: determining the data transmission rate of the audio signal and the audio encoding format of the audio signal; and determining the reference frequency matching the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format.

[0016] In one embodiment, the transmission unit determines a reference frequency matching the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format as follows: based on the data transmission rate of the audio signal, the number of PWM cycles required for a single data transmission is determined; the product of the number of PWM cycles and the maximum data bandwidth is determined as the reference frequency matching the audio signal.

[0017] In one embodiment, the transmission unit adjusts the transmission frequency of the signal to be transmitted based on the reference frequency in the following manner, and modulates the signal to be transmitted using frequency shift keying modulation based on the adjusted transmission frequency, then carries it on the carrier and transmits it to the target device: maintaining a first transmission frequency during the complete transmission cycle of the carrier transmission and transmitting first coded data of the signal to be transmitted; maintaining a second transmission frequency during the first half of the transmission cycle of the carrier transmission, and maintaining the first transmission frequency during the second half of the transmission cycle of the carrier transmission and transmitting second coded data of the signal to be transmitted; the first transmission frequency is a transmission frequency greater than the reference frequency, and the second transmission frequency is a transmission frequency less than the reference frequency.

[0018] According to a third aspect of the present disclosure, a signal transmission apparatus is provided, comprising:

[0019] processor;

[0020] Memory used to store processor-executable instructions;

[0021] The processor is configured to execute the method described in the first aspect or any embodiment of the first aspect.

[0022] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided, the storage medium storing instructions that, when executed by a processor of a terminal, enable the terminal to perform the method described in the first aspect or any embodiment of the first aspect.

[0023] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: During the reverse charging process of the terminal to the target device, if the user needs the target device to play audio from the terminal, the charging signal and the audio signal are carried in the carrier wave of the reverse charging process and transmitted to the target device. Therefore, the terminal can not only transmit the charging signal of the reverse charging process based on the carrier wave of the reverse charging process, but also transmit the audio signal, so that the transmission function between the transmitting end and the receiving end can be further utilized.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] Figure 1 This is a flowchart illustrating a signal transmission method according to an exemplary embodiment.

[0027] Figure 2 This is a flowchart illustrating the transmission of charging signals and audio signals according to an exemplary embodiment.

[0028] Figure 3 This diagram illustrates a terminal performing reverse charging and / or audio transmission to a target device.

[0029] Figure 4 A schematic diagram of an FSK modulation process for a charging signal is shown.

[0030] Figure 5 A schematic diagram of an FSK modulation process for an audio signal is shown.

[0031] Figure 6This is a block diagram of a signal transmission device according to an exemplary embodiment.

[0032] Figure 7 This is a block diagram illustrating an application control device according to an exemplary embodiment. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0034] The signal transmission method provided in this disclosure is applicable to wireless reverse charging scenarios. For example, the signal transmission method provided in this disclosure can be applied to scenarios where charging signals and audio signals are transmitted based on a carrier wave used for reverse charging, so that the audio played by the terminal is played by the target device that is currently charging.

[0035] Figure 1 This is a flowchart illustrating a signal transmission method according to an exemplary embodiment, such as... Figure 1 As shown, the signal transmission method used in the terminal includes the following steps.

[0036] In step S11, if it is determined that the terminal is performing reverse charging on the target device and needs to transmit the audio being played to the target device for playback, the charging signal and audio signal to be transmitted to the target device are determined.

[0037] In this disclosure, when the terminal reverse charges the target device and the target device needs to play audio from the terminal, the terminal encodes the audio to be played. Based on time division multiplexing technology in communication, the terminal determines the order in which the charging signal and the audio signal to be transmitted to the target device are transmitted, so that different signals sent by the sending end can be transmitted to the receiving end along the same channel in different time periods and thus be received by the receiving end.

[0038] In this embodiment of the disclosure, the method by which the terminal performs wireless reverse charging on the target device can be based on electromagnetic induction, magnetic field resonance, or radio waves. In one example, the primary coil in the internal circuit of the terminal can generate alternating current of a certain frequency. This alternating current generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmitting end to the receiving end, that is, realizing wireless reverse charging of the target device by the terminal.

[0039] In step S12, the charging signal and audio signal are carried in a carrier wave for reverse charging, and the charging signal and audio signal are transmitted to the target device based on the carrier wave.

[0040] In this disclosure, during the reverse charging process of the terminal to the target device, if the user needs the target device to play audio from the terminal, the audio to be played needs to be transmitted to the target device for playback. During the transmission of the audio, the charging signal and the audio signal to be transmitted to the target device are determined. The charging signal and the audio signal are carried in a carrier wave for reverse charging and transmitted to the target device. Therefore, the terminal can not only reverse charge the target device but also transmit audio signals during the reverse charging process, further utilizing the transmission function between the transmitting and receiving ends.

[0041] In this embodiment of the disclosure, when the terminal wirelessly charges the target device, both the terminal and the target device need to meet wireless charging standards. The mainstream wireless charging standards include: Qi standard, Power Matters Alliance (PMA) standard, Alliance for Wireless Power (A4WP) standard, Invisible Power Field (iNPOFi) technology, and Wi-Po technology. Using different wireless charging standards results in different communication methods between the transmitter and receiver. In one example, the wireless charging method meets the Qi standard. The Qi standard protocol uses Frequency-Shift Keying (FSK) modulation from the transmitter to the receiver. FSK is a modulation method that uses digital signals to control the carrier frequency.

[0042] Figure 2 This is a flowchart illustrating the transmission of charging signals and audio signals according to an exemplary embodiment, such as... Figure 2 As shown, transmitting charging signals and audio signals to a target device on a carrier wave includes the following steps.

[0043] In step S21, the signal to be transmitted is determined on the carrier.

[0044] The signals to be transmitted include charging signals or audio signals.

[0045] In this disclosure, during the transmission of signals to a target device on a carrier, time division multiplexing technology in communication is used to determine the signals to be transmitted on the carrier, so that different signals sent by the transmitting end can be transmitted to the receiving end along the same channel in different time periods and thus be received by the receiving end.

[0046] In this embodiment of the disclosure, Figure 3 This diagram illustrates a terminal performing reverse charging and / or audio transmission to a target device. Figure 3As shown, when a user wirelessly charges a wireless speaker using their mobile phone, the channel between the phone and the speaker transmits a charging signal. When the user needs the wireless speaker to play audio from their phone, the channel transmits an audio signal. When a user wirelessly charges a wireless speaker and needs the speaker to play audio from their phone, time-division multiplexing (TDM) technology is used to transmit both the charging and audio signals. For example, if the terminal generates a charging signal first and then an audio signal, the channel between the phone and the speaker transmits the charging signal first, followed by the audio signal; conversely, if the terminal generates an audio signal first and then a charging signal, the channel transmits the audio signal first, followed by the charging signal.

[0047] In step S22, a reference frequency matching the signal to be transmitted is determined.

[0048] In this disclosure, during the transmission of a signal to a target device on a carrier wave, if the signal to be transmitted is a charging signal, the charging protocol used for charging between the terminal and the target device is determined, and the default wireless power supply frequency of the charging protocol is confirmed as the reference frequency for matching the charging signal. For example, if the charging protocol between the terminal and the target device is the Qi protocol, then the reference frequency during communication between the terminal and the target device is 140 kHz.

[0049] In this embodiment of the disclosure, the charging protocol used for charging between the terminal and the target device is determined to be the Qi standard. During the transmission of signals to the target device on the carrier, if the signal transmitted in the channel between the terminal and the target device at this moment is a charging signal, then based on the Qi standard, the reference frequency for matching the charging signal is determined to be the default wireless power supply frequency of 140KHz.

[0050] In this disclosure, during the transmission of a signal to a target device on a carrier wave, if the signal to be transmitted is an audio signal, the data transmission rate and audio encoding format of the audio signal are determined. Based on the data transmission rate and the maximum data bandwidth of the audio signal's audio encoding format, a reference frequency for matching the audio signal is determined. Based on the data transmission rate of the audio signal, the number of PWM cycles required for a single data transmission is determined. The product of the number of PWM cycles and the maximum data bandwidth is determined as the reference frequency for matching the audio signal.

[0051] It is understood that audio encoding formats may include at least subband encoding, and no specific limitation is made to audio encoding formats in this disclosure.

[0052] In this embodiment, the terminal performs subband coding (SBC) on the audio to be played. The principle of SBC is to divide the signal's frequency band into several subbands, encode each subband, and allocate different numbers of bits to represent the data based on the importance and characteristics of each subband. The maximum data bandwidth of the audio signal obtained after SBC encoding is 328 Kbit / s, and the dual-channel sampling rate is 44.1 kHz. Based on the amount of data in the encoded audio signal and the ease of designing the communication chip, a data transmission rate is set. The data transmission rate represents the number of pulse (PWM) cycles required to transmit 1 bit of data, and the number of pulse cycles is even. Based on the preset data transmission rate, the number of PWM cycles required for a single transmission of 1 bit of data is determined. If the data transmission rate of the audio signal is set to transmit 1 bit of data in 8 pulse cycles, then the reference frequency of the audio signal is 328 kHz * 8 = 2.624 MHz.

[0053] In step S23, the transmission frequency of the signal to be transmitted is adjusted based on the reference frequency, and the waveform of the carrier wave is modulated using frequency shift keying based on the adjusted transmission frequency.

[0054] Different waveforms are used to carry different encoded data of the signal to be transmitted.

[0055] In this disclosure, the transmission frequency of the signal to be transmitted is adjusted based on a reference frequency, and the waveform of the carrier wave is modulated using frequency shift keying based on the adjusted transmission frequency. The method for modulating the carrier waveform includes: maintaining a first transmission frequency throughout the complete transmission cycle of the carrier wave; maintaining a second transmission frequency during the first half of the transmission cycle; and maintaining the first transmission frequency during the second half of the transmission cycle. The first transmission frequency is a transmission frequency greater than the reference frequency, and the second transmission frequency is a transmission frequency less than the reference frequency.

[0056] In this embodiment, the reference frequency of the charging signal is determined to be 140kHz. During the transmission of the charging signal, the transmission frequency needs to be adjusted. The charging signal consists of multiple 0s and 1s. When the transmitted charging signal is 0, the transmission frequency is adjusted to 141kHz, and 512 PWM cycles are transmitted continuously. When the transmitted charging signal is 1, the transmission frequency is first adjusted to 139kHz, and 256 PWM cycles are transmitted continuously. Then, the transmission frequency is adjusted to 141kHz, and another 256 PWM cycles are transmitted continuously. Figure 4 A schematic diagram of an FSK modulation process for a charging signal is shown, such as... Figure 4 As shown, the charging signal consists of 10101100, and the waveform is obtained by FSK modulation based on the reference frequency.

[0057] In this embodiment, the reference frequency of the audio signal is determined to be 2.624MHz. During the transmission of the audio signal, the transmission frequency needs to be adjusted. The audio signal consists of multiple 0s and 1s. When the transmitted audio signal is 0, the transmission frequency is adjusted to be greater than 2.624MHz, and eight PWM cycle waveforms are transmitted continuously. When the transmitted charging signal is 1, the transmission frequency is first adjusted to be less than 2.624MHz, and four PWM cycle waveforms are transmitted continuously. Then, the transmission frequency is adjusted to be greater than 2.624MHz, and four more PWM cycle waveforms are transmitted continuously. Figure 5 A schematic diagram of an FSK modulation process for an audio signal is shown, such as... Figure 5 As shown, the audio signal consists of 01010011, and the waveform is obtained by FSK modulation based on the reference frequency.

[0058] In step S24, the signal to be transmitted is transmitted to the target device based on the modulated waveform.

[0059] In this disclosure, based on the modulated waveform, first coded data and second coded data are transmitted to the target device, further enhancing the communication function between the terminal and the target device during wireless charging. This allows the device to transmit large data signals during wireless charging by adjusting the transmission frequency and data transmission rate, solving the problem that the charging signal reference frequency is too low to transmit large data signals, such as audio signals.

[0060] In this embodiment, during the process of a terminal reverse-charging a target device and transmitting audio to the target device for playback, the terminal first encodes the audio to be played, for example, using SBC encoding. Based on time-division multiplexing technology, the charging signal and the charging signal are transmitted sequentially. Assuming that the channel between the terminal and the target device is currently transmitting a charging signal, the transmission frequency of the charging signal is adjusted according to the reference frequency of 140kHz and the data transmission rate of 512 PWM cycles / bit. If a segment of the charging signal is encoded as 010 in binary, then during the transmission of the charging signal, the transmission frequency is first adjusted to 141kHz, and 512 PWM cycles are transmitted continuously. At this point, one binary code 0 is completely transmitted. Then, the transmission frequency is adjusted to 139kHz, and 256 PWM cycles are transmitted continuously. Finally, the transmission frequency is adjusted to 141kHz, and 256 PWM cycles are transmitted continuously. At this point, one binary code 1 is completely transmitted. The transmission frequency is then adjusted to 141kHz, and 512 PWM cycles are continuously transmitted. At this point, a complete binary code 0 is transmitted. Therefore, the terminal has now completely transmitted the charging signal binary code 010 to the target device, awaiting reception and demodulation. Assuming that one segment of the charging signal has been transmitted, the terminal prepares to transmit the audio signal. At this point, the reference frequency of the audio signal is determined based on the audio encoding method, maximum data bandwidth, and data transmission rate. The data transmission rate is set according to the complexity of the communication chip design and the amount of data. Based on the maximum data bandwidth of 328Kbit / s of the SBC-encoded audio signal and the preset data transmission rate of 8 PWM cycles / bit, the reference frequency of the audio signal is determined to be 2.624MHz. The transmission frequency of the audio signal is then adjusted according to the reference frequency of 2.624MHz. If an audio signal is encoded as 100 in binary, then during the transmission of the audio signal, the transmission frequency is first adjusted to less than 2.624MHz, and four PWM cycles are transmitted continuously. Then, the transmission frequency is adjusted to greater than 2.624MHz, and four PWM cycles are transmitted continuously. At this point, one binary code 1 has been completely transmitted. Next, the transmission frequency is adjusted to greater than 2.624MHz, and eight PWM cycles are transmitted continuously. At this point, one binary code 0 has been completely transmitted. Finally, the transmission frequency is adjusted to greater than 2.624MHz, and eight PWM cycles are transmitted continuously. At this point, one binary code 0 has been completely transmitted. Therefore, at this moment, the terminal has completely transmitted the audio signal binary code 100 to the target device, and it awaits the target device's reception and demodulation.Therefore, based on the above embodiments, the terminal can not only transmit reverse charging signals to the target device based on the reverse charging carrier, but also transmit audio signals, thereby further utilizing the transmission function between the transmitting end and the receiving end.

[0061] Based on the same concept, embodiments of this disclosure also provide a signal transmission device.

[0062] It is understood that the signal transmission device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0063] Figure 6 This is a block diagram illustrating a high dynamic range image capturing device according to an exemplary embodiment. (Refer to...) Figure 6 The device 100 includes a determining unit 101 and a transmission unit 102.

[0064] The determining unit 101 is used to determine the charging signal and audio signal to be transmitted to the target device in response to the terminal performing reverse charging on the target device and needing to transmit the audio being played to the target device for playback; the transmitting unit 102 is used to carry the charging signal and audio signal in a carrier wave for reverse charging, and transmit the charging signal and audio signal to the target device based on the carrier wave.

[0065] In one embodiment, the transmission unit 102 transmits a charging signal and an audio signal to a target device on a carrier wave in the following manner: determining the signal to be transmitted on the carrier wave, the signal to be transmitted including a charging signal or an audio signal; determining a reference frequency to match the signal to be transmitted; adjusting the transmission frequency of the signal to be transmitted based on the reference frequency, and modulating the waveform of the carrier wave using frequency shift keying modulation based on the adjusted transmission frequency, wherein different waveforms are used to carry different coded data of the signal to be transmitted; and transmitting the signal to be transmitted to the target device based on the modulated waveform.

[0066] In one embodiment, the signal to be transmitted is a charging signal; the transmission unit 102 determines the reference frequency to match the signal to be transmitted in the following manner: it determines the charging protocol used for charging between the terminal and the target device, and determines the default wireless power supply frequency of the charging protocol as the reference frequency to match the charging signal.

[0067] In one embodiment, the signal to be transmitted is an audio signal; the transmission unit 102 determines the reference frequency to match the signal to be transmitted in the following manner: determining the data transmission rate of the audio signal and the audio encoding format of the audio signal; and determining the reference frequency to match the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format.

[0068] In one embodiment, the transmission unit 102 determines the reference frequency of the matching audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format as follows: based on the data transmission rate of the audio signal, the number of PWM cycles required for a single data transmission is determined; the product between the number of PWM cycles and the maximum data bandwidth is determined as the reference frequency of the matching audio signal.

[0069] In one embodiment, the transmission unit 102 adjusts the transmission frequency of the signal to be transmitted based on a reference frequency in the following manner, and modulates the signal to be transmitted using frequency shift keying modulation based on the adjusted transmission frequency, then carries it on a carrier wave for transmission to the target device: maintaining a first transmission frequency during the complete transmission cycle of the carrier wave transmission and transmitting the first coded data of the signal to be transmitted; maintaining a second transmission frequency during the first half of the transmission cycle of the carrier wave transmission and maintaining the first transmission frequency during the second half of the transmission cycle of the carrier wave transmission and transmitting the second coded data of the signal to be transmitted; the first transmission frequency is a transmission frequency greater than the reference frequency, and the second transmission frequency is a transmission frequency less than the reference frequency.

[0070] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0071] Figure 7 This is a block diagram illustrating an application control device according to an exemplary embodiment. For example, device 200 can be provided as a terminal involved in the above embodiments. For example, it can be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0072] Reference Figure 7 The device 200 may include one or more of the following components: processing component 202, memory 204, power component 206, multimedia component 208, audio component 210, input / output (I / O) interface 212, sensor component 214, and communication component 216.

[0073] Processing component 202 typically controls the overall operation of device 200, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 202 may include one or more modules to facilitate interaction between processing component 202 and other components. For example, processing component 202 may include a multimedia module to facilitate interaction between multimedia component 208 and processing component 202.

[0074] Memory 204 is configured to store various types of data to support the operation of device 200. Examples of such data include instructions for any application or method operating on device 200, contact data, phonebook data, messages, pictures, videos, etc. Memory 204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0075] The power supply component 206 provides power to the various components of the device 200. The power supply component 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 200.

[0076] Multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 208 includes a front-facing camera and / or a rear-facing camera. When the device 200 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0077] Audio component 210 is configured to output and / or input audio signals. For example, audio component 210 includes a microphone (MIC) configured to receive external audio signals when device 200 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 204 or transmitted via communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.

[0078] I / O interface 212 provides an interface between processing component 202 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0079] Sensor assembly 214 includes one or more sensors for providing status assessments of various aspects of device 200. For example, sensor assembly 214 may detect the on / off state of device 200, the relative positioning of components such as the display and keypad of device 200, changes in the position of device 200 or a component of device 200, the presence or absence of user contact with device 200, the orientation or acceleration / deceleration of device 200, and temperature changes of device 200. Sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 214 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0080] Communication component 216 is configured to facilitate wired or wireless communication between device 200 and other devices. Device 200 can access wireless networks based on communication standards, such as WiFi, 4G, or 5G, or combinations thereof. In one exemplary embodiment, communication component 216 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 216 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0081] In an exemplary embodiment, the apparatus 200 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0082] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 204 including instructions, which can be executed by a processor 220 of the device 200 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0083] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0084] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0085] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A signal transmission method, characterized in that, Applied to terminals, including: In response to the terminal performing reverse charging on the target device and needing to transmit the audio being played to the target device for playback, the charging signal and audio signal to be transmitted to the target device are determined; The charging signal and the audio signal are carried in a carrier wave for reverse charging, and the charging signal and the audio signal are transmitted to the target device based on the carrier wave; Transmitting the charging signal and the audio signal to the target device on the carrier wave includes: determining a signal to be transmitted on the carrier wave, the signal to be transmitted including a charging signal or an audio signal; determining a reference frequency to match the signal to be transmitted; adjusting the transmission frequency of the signal to be transmitted based on the reference frequency, and modulating the waveform of the carrier wave using frequency shift keying based on the adjusted transmission frequency, wherein different waveforms are used to carry different coded data of the signal to be transmitted; and transmitting the signal to be transmitted to the target device based on the modulated waveform. The step of modulating the signal to be transmitted using frequency shift keying (FSK) based on the adjusted transmission frequency and carrying it on the carrier for transmission to the target device includes: maintaining a first transmission frequency during the complete transmission cycle of the carrier transmission and transmitting first coded data of the signal to be transmitted; maintaining a second transmission frequency during the first half of the transmission cycle of the carrier transmission and maintaining the first transmission frequency during the second half of the transmission cycle of the carrier transmission and transmitting second coded data of the signal to be transmitted; wherein the first transmission frequency is a transmission frequency greater than the reference frequency, and the second transmission frequency is a transmission frequency less than the reference frequency.

2. The method according to claim 1, characterized in that, The signal to be transmitted is a charging signal; Determining the reference frequency that matches the signal to be transmitted includes: The charging protocol used for charging between the terminal and the target device is determined, and the default wireless power supply frequency of the charging protocol is determined as the reference frequency to match the charging signal.

3. The method according to claim 1, characterized in that, The signal to be transmitted is an audio signal; Determining the reference frequency that matches the signal to be transmitted includes: Determine the data transmission rate of the audio signal and the audio encoding format of the audio signal; Based on the data transmission rate and the maximum data bandwidth of the audio encoding format, a reference frequency matching the audio signal is determined.

4. The method according to claim 3, characterized in that, Determining a reference frequency to match the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format includes: Based on the data transmission rate of the audio signal, determine the number of PWM cycles required for a single data transmission; The product of the number of PWM cycles and the maximum data bandwidth is determined as the reference frequency for matching the audio signal.

5. A signal transmission device, characterized in that, Applied to terminals, including: A determining unit is configured to determine the charging signal and audio signal to be transmitted to the target device in response to the terminal performing reverse charging on the target device and needing to transmit the audio being played to the target device for playback. A transmission unit is configured to carry the charging signal and the audio signal in a carrier wave for reverse charging, and transmit the charging signal and the audio signal to the target device based on the carrier wave; The transmission unit transmits the charging signal and the audio signal to the target device on the carrier wave in the following manner: determining the signal to be transmitted on the carrier wave, the signal to be transmitted including a charging signal or an audio signal; determining a reference frequency to match the signal to be transmitted; adjusting the transmission frequency of the signal to be transmitted based on the reference frequency, and modulating the waveform of the carrier wave using frequency shift keying based on the adjusted transmission frequency, wherein different waveforms are used to carry different coded data of the signal to be transmitted; and transmitting the signal to be transmitted to the target device based on the modulated waveform. The transmission unit adjusts the transmission frequency of the signal to be transmitted based on the reference frequency in the following manner, and modulates the signal to be transmitted using frequency shift keying modulation based on the adjusted transmission frequency, then carries it on the carrier and transmits it to the target device: maintaining a first transmission frequency during the complete transmission cycle of the carrier transmission, transmitting the first coded data of the signal to be transmitted; maintaining a second transmission frequency during the first half of the transmission cycle of the carrier transmission, and maintaining the first transmission frequency during the second half of the transmission cycle of the carrier transmission, transmitting the second coded data of the signal to be transmitted; the first transmission frequency is a transmission frequency greater than the reference frequency, and the second transmission frequency is a transmission frequency less than the reference frequency.

6. The apparatus according to claim 5, characterized in that, The signal to be transmitted is a charging signal; The transmission unit determines the reference frequency that matches the signal to be transmitted in the following manner: The charging protocol used for charging between the terminal and the target device is determined, and the default wireless power supply frequency of the charging protocol is determined as the reference frequency to match the charging signal.

7. The apparatus according to claim 5, characterized in that, The signal to be transmitted is an audio signal; The transmission unit determines the reference frequency that matches the signal to be transmitted in the following manner: Determine the data transmission rate of the audio signal and the audio encoding format of the audio signal; Based on the data transmission rate and the maximum data bandwidth of the audio encoding format, a reference frequency matching the audio signal is determined.

8. The apparatus according to claim 7, characterized in that, The transmission unit determines the reference frequency matching the audio signal based on the data transmission rate and the maximum data bandwidth of the audio encoding format in the following manner: Based on the data transmission rate of the audio signal, determine the number of PWM cycles required for a single data transmission; The product of the number of PWM cycles and the maximum data bandwidth is determined as the reference frequency for matching the audio signal.

9. A signal transmission device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the method described in any one of claims 1 to 4.

10. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the terminal's processor, enable the terminal to perform the method described in any one of claims 1 to 4.

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