Bluetooth and frequency modulation broadcast switching equipment

Abstract

The utility model discloses Bluetooth and frequency modulation broadcast switching equipment, which is characterized by comprising a Bluetooth transceiving module, a frequency modulation broadcast transceiving module and an audio interface, the Bluetooth transceiver module comprises a microprocessor, and the microprocessor is used for controlling to start a corresponding working mode according to the Bluetooth signal quality information, and controlling to start a first working mode when the Bluetooth signal quality information meets a preset Bluetooth signal quality value, and controlling to start a second working mode when the Bluetooth signal quality information meets the preset Bluetooth signal quality value. The first working mode is a corresponding working mode for starting the Bluetooth transceiver module; when the Bluetooth signal quality information does not meet the preset Bluetooth signal quality value, a second working mode is controlled to be started, and the second working mode is a working mode corresponding to the frequency modulation broadcast receiving and transmitting module, so that the whole equipment can freely switch Bluetooth broadcast and frequency modulation broadcast, stable communication of the equipment is ensured, and the user experience is improved. The communication effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of Bluetooth, in particular to a Bluetooth and FM broadcast switching device. Background Art

[0002] In daily life, people usually use Bluetooth devices (Bluetooth) or Frequency Modulation (Frequency Modulation, FM) devices to receive or listen to audio signals, such as common Bluetooth headsets, Bluetooth speakers, FM headsets, FM radios, walkie-talkies and other devices.

[0003] However, most Bluetooth devices can only be used for short-range communication. Once the communication distance is longer, Bluetooth devices cannot meet the communication needs. Although FM devices have a longer communication distance, the signal quality is usually poor and it is difficult to meet the actual communication needs of users. Utility Model Content

[0004] The purpose of this application is to provide a device that can freely switch between Bluetooth broadcasting and FM broadcasting to ensure stable communication of the device in actual application and improve the communication effect.

[0005] In a first aspect, an embodiment of the present application provides a Bluetooth and FM broadcast switching device, the device comprising: a Bluetooth transceiver module, an FM broadcast transceiver module and an audio interface.

[0006] The Bluetooth transceiver module includes a microprocessor, and the Bluetooth transceiver module is used to receive or transmit audio signals.

[0007] The microprocessor is used to control the activation of the corresponding working mode according to the Bluetooth signal quality information. When the Bluetooth signal quality information meets the preset Bluetooth signal quality value, the microprocessor controls the activation of the first working mode, and the first working mode is the working mode corresponding to the Bluetooth transceiver module; when the Bluetooth signal quality information does not meet the preset Bluetooth signal quality value, the microprocessor controls the activation of the second working mode, and the second working mode is the working mode corresponding to the FM broadcast transceiver module.

[0008] The FM broadcast transceiver module is connected to the Bluetooth transceiver module, and the FM broadcast transceiver module is used to receive or transmit FM broadcast signals.

[0009] The audio interface is connected to the Bluetooth transceiver module, and the audio interface is used to input or output audio signals.

[0010] The device achieves flexible communication by utilizing the microprocessor in the Bluetooth transceiver module to freely switch the working mode of the entire device, ensuring stable and high-quality communication in a variety of scenarios.

[0011] In one example, the Bluetooth transceiver module includes a Bluetooth signal processor, which is used to encode or decode audio signals, determine the power strength and quality of Bluetooth signals, and output the decoded audio signals and Bluetooth signal quality information to the microprocessor.

[0012] In one example, the FM broadcast transceiver module includes an FM broadcast signal processor, which is used to modulate or demodulate an audio signal, determine the power strength and quality of the FM broadcast signal, and output the demodulated audio signal and FM broadcast signal quality information to the microprocessor.

[0013] In one example, the device further includes an audio signal power amplifier, which is connected to the Bluetooth transceiver module and is used to amplify the signal power of the audio signal output by the Bluetooth transceiver module.

[0014] In one example, the device further includes a speaker, which is connected to the audio signal power amplifier, and is used to play the audio signal amplified by the audio signal power amplifier.

[0015] In one example, the audio interface includes at least one of the following: an S / PDIF interface, a USB interface, a TF card interface, an auxiliary interface, a high-definition multimedia interface, and a microphone interface.

[0016] In one example, the device further includes a radio frequency identification module and / or a near field communication module;

[0017] The radio frequency identification module is connected to the Bluetooth transceiver module, and the radio frequency identification module is used for wireless communication;

[0018] The near field communication module is connected to the Bluetooth transceiver module, and the near field communication module is used for short-range wireless communication.

[0019] In one example, the device further includes a key module, which is connected to the Bluetooth transceiver module, and is used to send a key operation signal to the Bluetooth transceiver module.

[0020] In one example, the device further includes a touch module, which is connected to the Bluetooth transceiver module, and the key module is used to send a touch operation signal to the Bluetooth transceiver module.

[0021] It can be understood that the key module and the touch module here can be set selectively.

[0022] In one example, the device further includes a display screen, which is connected to the Bluetooth transceiver module, and the display screen is an LED display screen or an LCD display screen.

[0023] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the entire device is controlled by utilizing the microprocessor in the Bluetooth transceiver module to freely switch the working mode, that is, when the Bluetooth signal quality received by the device is good, the Bluetooth transceiver module is selected for communication; when the Bluetooth signal quality received by the device is poor, it is switched to using the FM broadcast transceiver module for communication; at the same time, a variety of audio input and output can be performed through the audio interface, which meets the communication needs of users at different communication distances and in different communication modes, and improves the communication flexibility and applicability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural diagram of a Bluetooth and FM broadcast switching device provided in an embodiment of the present application.

[0026] Figure 2 This is a schematic diagram of the interaction between a Bluetooth and FM broadcast switching device and a terminal device provided in an embodiment of the present application.

[0027] Figure 3 It is a structural diagram of another Bluetooth and FM broadcast switching device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In daily work or study, people usually choose to use wireless devices for audio communication. For example, when listening to music, you can connect a Bluetooth-enabled speaker to play music from a mobile phone or other terminal device; in language level tests, you need to use FM headphones; in travel groups, you need to use FM headphones or FM walkie-talkies, and so on.

[0029] The advantage of FM radio is that it has a long transmission distance and can cover a large area, which is suitable for use outdoors or in open spaces. However, its signal quality is affected by the external environment and is easily interfered with, resulting in poor signal quality. The advantage of Bluetooth radio is that it has good signal quality and high stability, which is suitable for use indoors or in a small area. However, its transmission distance is relatively short and is not suitable for covering a large area.

[0030] In different application scenarios, the transmission distance, signal quality, stability, etc. of various wireless products are different. How to ensure stable audio communication in different external environments has become an urgent problem to be solved.

[0031] Therefore, the present application proposes a Bluetooth and FM broadcast switching device, which can realize the free switching between Bluetooth signals and FM signals, so that users can always receive audio signals with good signal quality.

[0032] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] Figure 1 It is a structural diagram of a Bluetooth and FM broadcast switching device provided in an embodiment of the present application.

[0034] like Figure 1 As shown, the device includes the following structures: a Bluetooth transceiver module 10 , an FM broadcast transceiver module 20 and an audio interface 30 .

[0035] The Bluetooth transceiver module 10 is used to receive or transmit audio signals.

[0036] It can be understood that the Bluetooth transceiver module 10 is used to implement the Bluetooth communication function, and it can communicate with other Bluetooth devices, such as smart phones, tablet computers, Bluetooth headsets, etc. In other words, the Bluetooth transceiver module 10 can receive data from other Bluetooth devices and send the data to other Bluetooth devices.

[0037] At the same time, the Bluetooth transceiver module here can be used not only to realize the classic Bluetooth function, but also to realize the Bluetooth Low Energy function. When realizing the Bluetooth Low Energy function, the broadcast isochronous channel (Broadcast Isochronous Stream, BIS) or the connected isochronous channel (Connected Isochronous Stream, CIS) can be used for data transmission.

[0038] The Bluetooth transceiver module 10 includes a microprocessor 11. The microprocessor 11 is used to control the activation of a corresponding working mode according to the Bluetooth signal quality information. When the Bluetooth signal quality information meets the preset Bluetooth signal quality value, the first working mode is controlled to be activated. The first working mode is to activate the working mode corresponding to the Bluetooth transceiver module; when the Bluetooth signal quality information does not meet the preset Bluetooth signal quality value, the second working mode is controlled to be activated. The second working mode is to activate the working mode corresponding to the FM broadcast transceiver module.

[0039] As an example but not a limitation, the microprocessor 11 can also be used as a separate module to connect to the Bluetooth transceiver module. The specific design form can be selected according to actual conditions.

[0040] Bluetooth signal quality information is a score used to indicate the strength and stability of Bluetooth signals. Generally speaking, the higher the Bluetooth signal quality information, the better the signal strength and the higher the connection stability.

[0041] A preset Bluetooth signal quality value may be set here. If the Bluetooth signal quality information meets the preset Bluetooth signal quality value, the first working mode is enabled; if the Bluetooth signal quality information does not meet the preset Bluetooth signal quality value, the second working mode is enabled.

[0042] For example, when the user first enables the Bluetooth transceiver module 10 (i.e., the first working mode) to receive audio signals, if the Bluetooth signal quality information at the current moment does not meet the preset Bluetooth signal quality value, then the FM radio transceiver module 20 can be enabled to receive audio signals (i.e., the second working mode), thus completing the switch from the first working mode to the second working mode.

[0043] In one example, the determination of Bluetooth signal quality information can be evaluated by measuring signal strength and connection stability. Signal strength can be determined by measuring the received signal strength indicator (RSSI). Generally speaking, the higher the signal strength, the higher the score; connection stability can be evaluated by detecting indicators such as signal fluctuations and packet loss rate. The higher the stability, the higher the score.

[0044] The FM broadcast transceiver module 20 is connected to the Bluetooth transceiver module 10 , and the FM broadcast transceiver module 20 is used to receive or transmit FM broadcast signals.

[0045] It can be understood that the FM broadcast signal is a radio signal transmitted by frequency modulation. In FM broadcasting, the frequency of the signal changes according to the change of the audio signal, thereby transmitting audio information. The FM broadcast transceiver module 20 can communicate with other Bluetooth devices through the Bluetooth transceiver module 10, or receive information from other Bluetooth devices. Vice versa, a Bluetooth device can also communicate with the FM broadcast transceiver module 20 through the Bluetooth transceiver module 10.

[0046] Through this connection mode, the FM broadcast transceiver module 20 can communicate with other devices more flexibly.

[0047] In one implementation, the microprocessor 11 is also used to control the activation of the corresponding working mode according to the FM broadcast signal quality information. When the FM broadcast signal quality information meets the preset FM broadcast signal quality value, the second working mode is enabled, and when the Bluetooth signal quality information does not meet the preset FM broadcast signal quality value, the first working mode is enabled.

[0048] The FM broadcast signal quality information is a score used to indicate the quality of the received FM broadcast signal. Generally speaking, the higher the FM broadcast signal quality information, the better the signal reception quality.

[0049] In one example, the quality information of FM broadcast signals is usually evaluated by measuring the strength, clarity and stability of the signal. Signal strength can be determined by measuring the received signal strength indicator (RSSI), and the higher the signal strength, the higher the score; clarity can be evaluated by detecting the noise and distortion of the signal, and the higher the clarity, the higher the score; stability can be evaluated by detecting indicators such as signal fluctuations and packet loss rate, and the higher the stability, the higher the score.

[0050] That is, the microprocessor 11 decides to send the audio signal to the Bluetooth transceiver module 10 or the FM broadcast transceiver module 20 according to the Bluetooth signal quality information or the FM broadcast signal quality information. If the audio signal is sent to the Bluetooth transceiver module 10, the system enters the first working mode and can perform Bluetooth communication. If the audio signal is sent to the FM broadcast transceiver module 20, the system enters the second working mode and can perform FM broadcasting.

[0051] This allows the device to have a more flexible working mode and can freely switch between the Bluetooth function and the FM radio function according to actual conditions.

[0052] The switching process of the working mode can be accurately controlled by the control signal sent by the microprocessor 11. That is, it is possible to flexibly switch between different working modes to meet different needs or application scenarios. In other words, the Bluetooth transceiver module 10 can be used for Bluetooth communication in the first working mode, and the FM broadcast transceiver module 20 can be used for FM broadcasting in the second working mode. In this way, multiple communication modes can be realized, the application scenarios of the device can be expanded, and the applicability of the device can be improved.

[0053] The audio interface 30 is connected to the Bluetooth transceiver module 10 , and the audio interface 30 is used to input or output audio signals.

[0054] The audio interface 30 refers to an interface for inputting or outputting audio signals, for example, common audio interfaces include 3.5 mm headphone interfaces, etc. The specific audio interface is not limited here and can be specifically selected according to actual conditions.

[0055] The audio signal is input or output through the audio interface 30, and the Bluetooth communication is performed through the Bluetooth transceiver module 10. For example, the audio signal can be input to the Bluetooth transceiver module 10 through the audio interface 30, and then transmitted to other Bluetooth devices through the Bluetooth connection; or the audio signal received through the Bluetooth connection is output to an audio device such as a speaker or a headset through the audio interface.

[0056] This connection method can realize wireless audio transmission, allowing audio devices to connect and communicate with other devices via Bluetooth, improving the flexibility and convenience of the device.

[0057] Figure 2 This is a schematic diagram of the interaction between a Bluetooth and FM broadcast switching device and a terminal device provided in an embodiment of the present application.

[0058] like Figure 2 As shown, the device can realize wireless communication with terminal devices such as mobile phones.

[0059] In one implementation, the Bluetooth transceiver module 10 is provided with a Bluetooth antenna, which can be used to receive and send Bluetooth signals. The Bluetooth antenna is usually a small antenna used for wireless communication within the Bluetooth frequency band.

[0060] When the device is paired with a mobile phone (or other terminals, not limited here), they can communicate through the Bluetooth antenna. The Bluetooth antenna receives the Bluetooth signal from the mobile phone and transmits the audio data to the Bluetooth transceiver module 10. At the same time, the audio data generated by the device can also be transmitted to the mobile phone through the Bluetooth antenna.

[0061] Through the Bluetooth communication protocol, the device and the mobile phone can realize the transmission of audio data and the interaction of control commands, thereby realizing the audio input and output functions.

[0062] For example, assuming that when communicating with a mobile phone, the Bluetooth transceiver module 10 of the device receives the mobile phone audio signal, demodulates it, and then outputs it to the audio interface 30 for playback. It can also be considered that the Bluetooth transceiver module at this time realizes the function of a Bluetooth speaker or a Bluetooth receiver.

[0063] For another example, if an audio signal is input from the FM broadcast transceiver module 20 or the audio interface 30, the FM broadcast transceiver module 20 or the audio interface 30 transmits the audio signal to the Bluetooth transceiver module 10, and the Bluetooth transceiver module 10 can debug the audio signal into a Bluetooth signal and output it through the Bluetooth antenna to generate a wireless signal. It can also be considered that the Bluetooth transceiver module 10 at this time realizes the Bluetooth broadcast or Bluetooth signal transmitter function.

[0064] In one implementation, the FM broadcast transceiver module 20 is provided with an FM antenna, which is used to receive signals from an FM broadcast signal source and transmit them to the FM broadcast transceiver module 20 for processing, so as to receive and play broadcast programs.

[0065] The FM radio transceiver module 20 receives FM radio signals from FM signal sources such as radio stations through the FM antenna, converts the FM radio signals into audio signals after demodulation, and then transmits them to the Bluetooth transceiver module 10. The Bluetooth transceiver module 10 can then transmit the audio signals to the mobile phone through the Bluetooth antenna, thereby realizing interaction with other devices.

[0066] For example, the FM radio transceiver module 20 receives FM radio signals through the FM antenna, demodulates the FM radio signals into audio signals, and transmits the audio signals to the Bluetooth transceiver module 10, which is processed by the Bluetooth transceiver module 10 and then transmitted to the audio interface 30 for output. It can also be considered that the FM radio transceiver module 20 is used as an FM receiver.

[0067] For another example, the audio signal input from the audio interface 30 to the Bluetooth transceiver module 10 or the Bluetooth signal received by the Bluetooth transceiver module 10 is transmitted to the FM radio transceiver module 20. After debugging, the FM radio transceiver module 20 converts the audio signal into an FM signal and transmits it through the FM antenna. It can also be considered that the FM radio transceiver module 20 is used as an FM transmitter at this time.

[0068] Figure 3 It is a structural diagram of another Bluetooth and FM broadcast switching device provided in an embodiment of the present application.

[0069] like Figure 3 As shown, in one example, the Bluetooth transceiver module 10 includes a Bluetooth signal processor 12, which is used to encode or decode audio signals, determine the power strength and quality of Bluetooth signals, and output the decoded audio signals and Bluetooth signal quality information to the microprocessor 11.

[0070] It can be understood that the audio signal that can be directly processed is called a digital signal, and the signal received or sent by the Bluetooth module is called a Bluetooth signal, that is, a signal that needs to be transmitted wirelessly.

[0071] The Bluetooth signal processor 12 can convert the two signals to each other. Converting the digital signal to a Bluetooth signal is called encoding, and the reverse is called decoding.

[0072] The Bluetooth signal processor 12 can be understood as a digital signal processor that can implement digital signal processing (DSP) functions, such as EQ adjustment, bass enhancement, echo cancellation with microphone input and other audio algorithm processing. The input audio signals are processed by the DSP and then output to other modules to achieve better sound output.

[0073] As an example but not limitation, the Bluetooth signal processor 12 can also be used as a separate module connected to the Bluetooth transceiver module, and the specific design form can be selected according to actual conditions.

[0074] Here, determining the Bluetooth signal quality information refers to determining the Bluetooth signal quality by determining the Bluetooth signal strength and interference size.

[0075] Bluetooth signal strength refers to the strength of the signal transmitted between Bluetooth devices, usually expressed in decibels (dBm). The greater the signal strength, the longer the communication distance between devices and the more stable the signal transmission.

[0076] Interference refers to the degree of external interference during Bluetooth communication. The greater the interference, the more serious the external interference to the Bluetooth device, which may affect the communication quality and stability. The interference is usually expressed by the signal-to-noise ratio (SNR), that is, the ratio of signal power to noise power. The lower the SNR, the greater the interference.

[0077] Signal power refers to signal strength, which indicates the energy of the signal. In wireless communications, signal power is usually used to measure signal strength and transmission quality. Higher signal power usually indicates better signal quality.

[0078] Noise power refers to the intensity of the noise contained in the signal, which indicates the degree of interference and noise contained in the signal. In wireless communications, the size of the noise power affects the clarity and reliability of the signal. Lower noise power usually indicates better signal quality.

[0079] If the signal power is high and the noise power is low, the signal quality is generally considered to be good. Conversely, if the signal power is low and the noise power is high, the signal quality may be poor.

[0080] By judging the Bluetooth signal quality of the received Bluetooth signal, it can help evaluate the quality of the signal and make corresponding adjustments and optimizations accordingly.

[0081] It can also be understood that the Bluetooth signal processor 12 generates Bluetooth signal quality information by performing power and noise analysis on the received audio signal, and then transmits the evaluation result to the microprocessor 11 for further processing and decision-making. This method can help the system monitor and adjust the quality of the Bluetooth signal in real time, thereby improving the stability and reliability of communication.

[0082] In one example, the FM broadcast transceiver module 20 includes an FM broadcast signal processor 21, which is used to modulate or demodulate the audio signal, determine the power strength and quality of the FM broadcast signal, and output the demodulated audio signal and FM broadcast signal quality information to the microprocessor 11.

[0083] The audio signal is a signal that can be directly processed, and the signal after the audio signal is modulated is an FM signal (ie, a signal that needs to be transmitted wirelessly).

[0084] The FM broadcast transceiver module 20 modulates the audio signal into an FM signal when used for transmission, and demodulates the FM signal into an audio signal when used for reception. It can be understood from the above that the FM broadcast signal processor 21 can sample and analyze the received FM broadcast signal, determine the FM signal power strength and interference size, and then generate FM broadcast signal quality information and send it to the microprocessor 11.

[0085] In an example, the above device further includes an audio signal power amplifier 40 , which is connected to the Bluetooth transceiver module 10 , and is used to amplify the signal power of the audio signal output by the Bluetooth transceiver module 10 .

[0086] The function of the audio signal power amplifier 40 is to amplify the audio signal output by the Bluetooth transceiver module 10 to a sufficient power to drive an audio output device such as a speaker 50 or a headset.

[0087] In one example, the above device further includes a speaker 50 , which is connected to the audio signal power amplifier 40 , and is used to play the audio signal amplified by the audio signal power amplifier 40 .

[0088] The function of the speaker 50 is to convert the audio signal (electrical signal) amplified by the audio signal power amplifier 40 into an audible sound signal and output it so that the user can hear the sound.

[0089] In one example, the audio interface 30 includes at least one of the following: an S / PDIF interface 31 , a USB interface 32 , a TF card interface 33 , an auxiliary interface 34 , a high-definition multimedia interface 35 , and a microphone interface 36 .

[0090] S / PDIF (Sony / Philips Digital Interface) interface 31 is a digital audio output interface for transmitting digital audio signals from one device to another, such as from a CD player to a digital audio receiver. It is commonly used for connection between home theater systems and audio devices.

[0091] The USB interface 32 is a universal digital data transmission interface used to connect a computer and external devices, such as an audio interface, an audio player, etc. It can transmit audio and video data, and can also be used for power supply. You can also insert a USB flash drive to directly play songs in the USB flash drive. You can also connect a USB device and use it as a USB Audio decoding device.

[0092] The TF card interface 33 (ie, TransFlash card interface, also called MicroSD card interface) is an interface for connecting a MicroSD memory card, and is usually used in mobile devices such as mobile phones, cameras, music players, etc.

[0093] The auxiliary interface 34 (ie, AUX interface) is an analog audio input / output interface, which is generally used to connect an audio device, such as a mobile phone or an MP3 player, to a vehicle audio system.

[0094] The high-definition multimedia interface 35 (i.e., HDMI interface) is a digital audio / video interface used to connect devices such as high-definition televisions, projectors, audio / video receivers, etc. to transmit high-definition video and audio signals.

[0095] The microphone interface 36 is an interface for connecting a microphone to obtain an audio signal from the microphone, and is usually used in voice recording and communication equipment.

[0096] It may also include an I / O port for key detection, etc. The specific interface may be set according to actual conditions and is not limited here.

[0097] In one example, the device further includes a radio frequency identification module 60 and / or a near field communication module 70 .

[0098] The RFID module 60 is connected to the Bluetooth transceiver module 10 , and the RFID module 60 is used for wireless communication.

[0099] The Radio Frequency Identification (RFID) module 60 is a wireless communication technology that can identify a specific target and read related data through radio waves.

[0100] The near field communication module 70 is connected to the Bluetooth transceiver module 10 , and the near field communication module 70 is used for short-range wireless communication.

[0101] The Near Field Communication (NFC) module 70 is a short-range wireless communication technology that allows devices to transmit and exchange data in a contactless manner.

[0102] It can be understood that both belong to wireless communication technologies, but RFID has a wider recognition range, while NFC is usually used for short-range communication.

[0103] For example, assuming that there are multiple devices mentioned above that need to be used in association, the corresponding working status is set on one of the devices, and the device configuration information is quickly transmitted to other devices through close-range interaction with the RFID module 60 or the NFC module 70, thereby realizing rapid synchronization of broadcast information or rapid establishment of connection functions, or multiple devices can also form a local area network, and communication is only achieved between the networking devices.

[0104] In an example, the above device further includes a key module 80 , which is connected to the Bluetooth transceiver module 10 , and is used to send a key operation signal to the Bluetooth transceiver module 10 .

[0105] For example, a key switch is installed on the key module 80. When the key is pressed, the key module 80 sends a specific signal to the Bluetooth transceiver module 10. After receiving the signal, the Bluetooth transceiver module 10 can parse the signal and perform corresponding operations, such as turning on or off Bluetooth, selecting an input interface, setting an FM working frequency band or Bluetooth working mode, etc.

[0106] In one example, the above device further includes a touch module 90, which is connected to the Bluetooth transceiver module 10, and the touch module 90 is used to send a touch operation signal to the Bluetooth transceiver module.

[0107] For example, a touch sensor is installed on the touch module 90. When the user touches the corresponding touch panel, the touch module 90 sends a specific signal to the Bluetooth transceiver module 10. After receiving the signal, the Bluetooth transceiver module 10 can analyze the signal and perform corresponding operations, such as turning on or off Bluetooth, selecting an input interface, setting an FM working frequency band or Bluetooth working mode, etc.

[0108] It can be understood that the key module 80 and the touch module 90 here can be set selectively.

[0109] In one example, the device further includes a display screen 100 , which is connected to the Bluetooth transceiver module 10 , and the display screen 100 is an LED display screen or an LCD display screen.

[0110] For example, the Bluetooth transceiver module 10 receives data from other Bluetooth devices and then transmits the data to the display screen 100. The display screen 100 controls the LED display screen or the LCD display screen to display content according to the received data, thereby realizing the display of the information transmitted by the Bluetooth device.

[0111] The working functions of the above devices are introduced below with reference to specific examples.

[0112] In an example, assuming that after the Bluetooth transceiver module 10 receives the Bluetooth signal, it is demodulated into an audio signal by the Bluetooth transceiver module 10. The audio signal can be output by the speaker 50, can be output through the audio interface 30, or can be transmitted to the FM radio transceiver module 20 to be modulated into an FM radio signal for output.

[0113] In an example, assuming that after the FM radio transceiver module 20 receives the FM signal, the FM radio transceiver module 20 demodulates it into an audio signal, and transmits the audio signal to the Bluetooth transceiver module 10, which is controlled by the Bluetooth transceiver module 10 and can be converted into Bluetooth broadcast output, or transmitted to the speaker 50 for output, or transmitted to the audio interface 30 for output.

[0114] In an example, assuming that an audio signal is input from the audio interface 30, the audio interface 30 transmits the audio signal to the Bluetooth transceiver module 10, and the Bluetooth transceiver module 10 processes the audio signal. On the one hand, it can be selected to broadcast the audio signal as a Bluetooth signal; on the other hand, it can also be selected to transmit the audio signal to the FM broadcast transceiver module 20, and the FM broadcast transceiver module 20 can convert the audio signal into an FM signal for FM broadcasting after processing; on the other hand, it can also be selected to output from other audio interfaces (such as the microphone interface 35, etc.).

[0115] In an example, assuming that the Bluetooth transceiver module 10 or the FM radio transceiver module 20 receives a radio wave signal, after demodulation processing, the speaker 50 or the audio interface 30 can be selected for output.

[0116] In combination with real life, assuming that in the application scenario of language proficiency test, each classroom is equipped with a device to receive FM signals and then convert them into Bluetooth signals for output. Candidates wearing headphones that can receive Bluetooth broadcasts can receive stable audio information with good signal quality. Compared with candidates using FM headphones to blindly tune in to receive radio stations, it is more convenient, and the listening quality is more stable and the sound quality is better than that of FM headphones.

[0117] Assuming that in the application scenario of a tour group, each member of the tour group is equipped with this device, the tour guide can quickly network the devices of the team members through the RFID module 60 or the NFC module 70, and the tour guide can simultaneously output through FM and Bluetooth broadcasts, and the tourists' devices automatically switch the receiving mode according to the Bluetooth and FM signal strengths. When the distance is close and the Bluetooth signal is strong, it switches to the Bluetooth mode, so that the sound quality is better and clearer during close-range calls. When the Bluetooth signal is weak, it automatically switches to the FM receiving mode. Improve the listening effect of tourists at close range.

[0118] Assuming a scenario where the device is used as an intercom between the hotel's front desk clerk and the hotel's cleaner or security guard, the devices that need to be teamed up are automatically teamed up through the RFID module 60 or the NFC module 70, short-distance calls are automatically switched to Bluetooth calls, and long-distance calls are automatically switched to FM broadcasts, thereby improving the short-distance call effect.

[0119] Assume that in daily home use, the audio output by household devices, such as TV, mobile phone, tablet, MP3 and other audio devices, is input into this device through the audio interface 30. This device can broadcast the audio signal simultaneously via FM and Bluetooth. People nearby can listen to the audio through headphones or FM radios that can receive Bluetooth broadcasts, thereby achieving the effect of audio sharing.

[0120] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0121] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0123] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0124] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0125] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0126] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A Bluetooth and FM broadcast switching device, characterized in that: include: Bluetooth transceiver module, FM radio transceiver module and audio interface; The Bluetooth transceiver module includes a microprocessor, and the Bluetooth transceiver module is used to receive or transmit audio signals; The microprocessor is used to control the activation of a corresponding working mode according to the Bluetooth signal quality information. When the Bluetooth signal quality information meets a preset Bluetooth signal quality value, the microprocessor controls the activation of a first working mode, wherein the first working mode is a working mode corresponding to the Bluetooth transceiver module; when the Bluetooth signal quality information does not meet the preset Bluetooth signal quality value, the microprocessor controls the activation of a second working mode, wherein the second working mode is a working mode corresponding to the FM broadcast transceiver module; The FM broadcast transceiver module is connected to the Bluetooth transceiver module, and the FM broadcast transceiver module is used to receive or transmit FM broadcast signals; The audio interface is connected to the Bluetooth transceiver module, and the audio interface is used to input or output audio signals.

2. The device according to claim 1, characterized in that The Bluetooth transceiver module includes a Bluetooth signal processor, which is used to encode or decode audio signals, determine the power strength and quality of Bluetooth signals, and output the decoded audio signals and the Bluetooth signal quality information to the microprocessor.

3. The device according to claim 2, characterized in that The FM broadcast transceiver module includes an FM broadcast signal processor, which is used to modulate or demodulate the audio signal, determine the power strength and quality of the FM broadcast signal, and output the demodulated audio signal and FM broadcast signal quality information to the microprocessor.

4. The device according to claim 1, characterized in that The device further comprises an audio signal power amplifier, which is connected to the Bluetooth transceiver module and is used to amplify the signal power of the audio signal output by the Bluetooth transceiver module.

5. The device according to claim 4, characterized in that The device also includes a speaker, which is connected to the audio signal power amplifier and is used to play the audio signal amplified by the audio signal power amplifier.

6. The device according to claim 1, characterized in that The audio interface includes at least one of the following: an S / PDIF interface, a USB interface, a TF card interface, an auxiliary interface, a high-definition multimedia interface, and a microphone interface.

7. The device according to claim 1, characterized in that The device also includes a radio frequency identification module and / or a near field communication module; The radio frequency identification module is connected to the Bluetooth transceiver module, and the radio frequency identification module is used for wireless communication; The near field communication module is connected to the Bluetooth transceiver module, and the near field communication module is used for short-range wireless communication.

8. The device according to claim 1, characterized in that The device further comprises a key module, which is connected to the Bluetooth transceiver module and is used to send a key operation signal to the Bluetooth transceiver module.

9. The device according to claim 1, characterized in that The device further comprises a touch module, which is connected to the Bluetooth transceiver module and is used to send a touch operation signal to the Bluetooth transceiver module.

10. The device according to any one of claims 1 to 9, characterized in that The device also includes a display screen, which is connected to the Bluetooth transceiver module and is an LED display screen or an LCD display screen.

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