Type-c earphone system with fm function and electronic device

Abstract

The application relates to the technical field of wireless communication, in particular to a Type-C earphone system with an FM function and an electronic device. The Type-C earphone system comprises a main control module, an antenna module, a radio module, a control module, an interface and an earphone loudspeaker. The first input end of the main control module is connected with the interface, and the first output end is connected with the earphone loudspeaker. The second input end of the main control module is connected with the control module, the control module comprises a plurality of keys, and the main control module is controlled to enter a corresponding earphone mode through the key state. The third input end of the main control module is connected with the antenna module, and the antenna module is used for receiving and sending FM signals to the main control module. The fourth input end of the main control module is connected with the radio module, and the radio module is used for receiving and sending analog signals to the main control module. The FM function is integrated in the Type-C earphone, so that the information acquisition capability of the Type-C earphone under abnormal communication conditions is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a Type-C earphone system with FM function and an electronic device. BACKGROUND

[0002] With the popularity of smart phones, the earphone interface of the mobile phone is gradually changing from the traditional 3.5mm interface to the Type-C interface. The Type-C earphone is connected with the mobile phone through the Type-C interface, receives the audio information sent by the mobile phone through the digital signal, converts it into an analog signal, and finally outputs the sound through the speaker of the earphone, thereby realizing the modern replacement of the traditional 3.5mm earphone function. However, the current Type-C earphone is limited to receiving and playing the audio signal provided by the mobile phone, and lacks the ability to expand other information acquisition functions.

[0003] Specifically, the existing Type-C earphone has limitations in function and cannot provide an independent information acquisition approach, which makes it difficult for users to receive other external information when the mobile phone is in a weak signal or communication interruption situation. The combination of the existing mobile phone and the Type-C earphone can meet the basic audio playback needs of users, but it is difficult to expand other functions, especially information acquisition functions, and cannot effectively meet the needs of users to obtain external information.

[0004] Therefore, how to ensure the information acquisition ability of the Type-C earphone in abnormal communication situations is a technical problem to be solved. CONTENT OF THE INVENTION

[0005] In order to overcome the shortcomings of the prior art, the present application provides a Type-C earphone system with FM function and an electronic device to integrate the FM function into the Type-C earphone, thereby ensuring the information acquisition ability of the Type-C earphone in abnormal communication situations.

[0006] The technical scheme adopted by the present application to solve its technical problems is:

[0007] In a first aspect, the present application provides a Type-C earphone system with FM function, comprising: a main control module, an antenna module, a radio module, a control module, an interface and an earphone speaker.

[0008] The first input end of the main control module is connected with the interface, and the first output end is connected with the earphone speaker.

[0009] The second input end of the main control module is connected with the control module, and the control module comprises a plurality of keys for controlling the main control module to enter a corresponding earphone mode through the key state of the plurality of keys.

[0010] The third input end of the main control module is connected with the antenna module, for receiving and sending FM signal to the main control module through the antenna module;

[0011] The fourth input end of the main control module is connected with the radio module, for receiving and sending analog signal to the main control module through the radio module.

[0012] Optionally, it further comprises a state display module; the state display module comprises a nixie tube and / or an indicator light;

[0013] The second output end of the main control module is connected with the input end of the state display module, for the state display module to acquire the module state of the main control module, and to display the module state through the nixie tube and / or the indicator light; the state display comprises broadcast frequency display.

[0014] Optionally, the control module comprises a first button, a second button, a third button, a fourth button, a first resistor, a second resistor and a third resistor; the first resistor, the second resistor and the third resistor have different resistance values;

[0015] One end of the first button, the second button, the third button and the fourth button is grounded;

[0016] The other end of the first button is connected with the second input end of the main control module;

[0017] The other end of the second button is connected with the second input end of the main control module through the first resistor, the other end of the third button is connected with the second input end of the main control module through the second resistor, and the other end of the fourth button is connected with the second input end of the main control module through the third resistor.

[0018] Optionally, the antenna module comprises an FM antenna, a first inductor, a second inductor and a third inductor;

[0019] The output end of the FM antenna is connected with one end of the first inductor, and the other end of the first inductor is connected with the third input end of the main control module;

[0020] One end of the second inductor and one end of the third inductor are connected with the other end of the first inductor, and the other end of the second inductor and the other end of the third inductor are grounded.

[0021] Optionally, the radio module comprises a first voltage stabilizing tube, a first capacitor, a second capacitor, a fourth resistor and a microphone;

[0022] The input end of the radio module is connected with the fourth input end of the main control module through the first capacitor;

[0023] One end of the first voltage stabilizer is connected to the connection between the first capacitor and the input end of the radio module, and the other end is grounded.

[0024] One end of the fourth resistor is connected to an external digital signal source, the other end is connected to the connection between the first capacitor and the output end of the radio module, and the positive electrode of the microphone, the negative electrode of the microphone is grounded; the first capacitor is connected in parallel across the microphone.

[0025] Optionally, the display module includes a digital tube; the digital tube includes a plurality of input ends.

[0026] The plurality of input ends of the digital tube are connected to the second output end of the main control module.

[0027] Optionally, the main control module includes a main control chip of model AB5602B.

[0028] The 1 pin of the main control chip is connected to the output end of the FM antenna through the first inductor.

[0029] The 14 pin of the main control chip is connected to the first, second, third and fourth keys.

[0030] Optionally, the digital tube is of model LED1888_6p, and the plurality of input ends of the digital tube include six pins.

[0031] The 1 pin of the digital tube is connected to the 24 pin of the main control chip, the 2 pin of the digital tube is connected to the 23 pin of the main control chip, the 3 pin of the digital tube is connected to the 22 pin of the main control chip, the 4 pin of the digital tube is connected to the 21 pin of the main control chip, the 5 pin of the digital tube is connected to the 20 pin of the main control chip, and the 6 pin of the digital tube is connected to the 12 pin of the main control chip.

[0032] In a second aspect, the application provides an electronic device loaded with the above-mentioned Type-C earphone system with FM function.

[0033] The application has the beneficial effect that when the user inserts the Type-C interface into the related device (such as a mobile phone), the earphone defaults to the digital earphone mode;

[0034] When the user switches the signal source through the multiple key triggering modes in the control module, the earphone in the digital earphone mode can be switched to the FM radio mode, in the FM radio mode, the FM broadcast signal in the area where the earphone is located is received through the antenna in the antenna module, the broadcast signal is demodulated and played through the main control module, thereby generating an analog signal, and the generated analog signal can be output to the earphone speaker in the earphone for playing.

[0035] Based on this, the application provides a design of integrating FM function in Type-C earphone, which overcomes the limitation of existing Type-C earphone in function, cannot provide independent information acquisition channel, and causes the user to be difficult to receive other external information when the mobile phone is in a special situation such as weak signal or communication interruption, thereby improving the user's use experience and the practicality of Type-C earphone, widening the information acquisition channel, and ensuring the information acquisition ability of Type-C earphone in abnormal communication situation. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is the module connection diagram of the Type-C earphone system with FM function provided by the embodiment of the application;

[0037] Figure 2 is the circuit principle diagram of the control module in the Type-C earphone system with FM function provided by the embodiment of the application;

[0038] Figure 3 is the circuit principle diagram of the antenna module in the Type-C earphone system with FM function provided by the embodiment of the application;

[0039] Figure 4 is the circuit principle diagram of the radio module in the Type-C earphone system with FM function provided by the embodiment of the application;

[0040] Figure 5 is the circuit principle diagram of the display module in the Type-C earphone system with FM function provided by the embodiment of the application;

[0041] Figure 6 is the circuit principle diagram of the main control module in the Type-C earphone system with FM function provided by the embodiment of the application;

[0042] Figure 7 is the circuit principle diagram of the digital tube in the Type-C earphone system with FM function provided by the embodiment of the application;

[0043] The reference signs are: S1, first key; S2, second key; S3, third key; S4, fourth key; R4, first resistor; R6, second resistor; R8, third resistor; L1, first inductor; L2, second inductor; L3, third inductor; ESD4, first voltage stabilizing tube; C2, first capacitor; C7, second capacitor; M1, microphone; R1, fourth resistor; LED1, digital tube; U1, main control chip. DETAILED DESCRIPTION

[0044] The application will be further described below in combination with the drawings and embodiments.

[0045] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, and other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor are within the scope of protection of the present application. In addition, all the coupling / connection relations involved in the patent do not mean that the components are directly connected, but that a better coupling structure can be composed by adding or reducing coupling accessories according to the specific implementation. The technical features in the creation of the present application can be combined interactively without conflict.

[0046] Reference Figure 1 , Figure 1 is a module connection diagram of a Type-C earphone system with FM function provided by the embodiment of the present application, which comprises a main control module, an antenna module, a radio module, a control module, an interface and an earphone speaker, which will be described in detail as follows:

[0047] The first input end of the main control module is connected with the interface, and the first output end is connected with the earphone speaker.

[0048] Specifically, the interface is a Type-C interface, as shown in Figure 1 When the interface is used as an output end, it can be used as an audio signal input, and can also supply power to the earphone; when the interface is used as an output end, in the digital earphone mode, the main control module can also send MIC back signal and control message to the interface, so that the related equipment (such as mobile phone) receives.

[0049] Further, the second input end of the main control module is connected with the control module, and the control module comprises a plurality of keys, which are used to control the main control module to enter the corresponding earphone mode through the key state of the plurality of keys.

[0050] Specifically, the control module comprises a plurality of keys, so as to receive the control instruction of the user. The keys are connected in series with resistors with different resistance values, so that the voltage values generated by the pull-down of the corresponding pins when the keys are triggered are different. After the different voltage values are recognized by the main control module, the main control module will execute the corresponding function, i.e. enter different earphone modes.

[0051] Further, the third input end of the main control module is connected with the antenna module, which is used to receive and send FM signal to the main control module through the antenna module.

[0052] Specifically, when the user triggers the function switching signal through the keys in the control module, the earphone can be switched to the FM radio mode, in which the earphone can receive the FM frequency broadcast signal in the area through the antenna formed by the earphone wire (i.e. the antenna module), and the broadcast signal is demodulated and played by the main control module to generate an analog signal to drive the earphone speaker to play the sound.

[0053] More specifically, when the earphone is in the FM radio mode, the user can send a key signal to the main control module through the keys in the control module, and after receiving the input key signal, the main control module will not send a control signal to the mobile phone, but receive the control signal to control the FM radio function of the main control module itself, thereby realizing the operations such as volume increase / decrease, station searching, station storing, and station taking when the earphone is in the FM radio mode.

[0054] Further, the fourth input end of the main control module is connected to the radio module for receiving and sending an analog signal to the main control module through the radio module.

[0055] Specifically, when the user inserts the Type-C interface into the mobile phone, the earphone defaults to the digital earphone mode, in which the digital signal from the mobile phone and other related devices is transmitted to the main control module through the Type-C interface, and after decoding processing and DAC digital-to-analog conversion by the main control chip in the main control module, it is parsed into an audio analog signal output to the earphone speaker, thereby playing the sound through the earphone speaker.

[0056] More specifically, when the earphone is in the digital earphone mode, the microphone in the radio module of the earphone can obtain a sound signal to generate an analog signal, which is converted into a digital signal by the main control module and transmitted back to the mobile phone through the Type-C interface, thereby realizing the call function like a general Type-C earphone.

[0057] More specifically, when the earphone is in the digital earphone mode, the user can send a key signal to the main control module through the keys in the control module, and after receiving the signal, the main control module will send a control signal to the mobile phone to realize the functions such as controlling the increase / decrease of the volume of the mobile phone, playing / pausing, and answering / hanging up the call.

[0058] Further, with reference to Figure 1 , the Type-C earphone system with FM function further comprises a state display module, wherein the state display module comprises a nixie tube and / or an indicator light;

[0059] Specifically, the second output end of the main control module is connected to the input end of the state display module for the state display module to obtain the module state of the main control module and display the module state through the nixie tube and / or the indicator light; the state display comprises broadcast frequency display.

[0060] Specifically, the nixie tube can be composed of a plurality of LED lamps, which receive the signal feedback by the control module and display the current state of the system on the corresponding display of the state display module, so as to facilitate the user to master the system situation.

[0061] Further, referring to Figure 2 , Figure 2 is the circuit schematic diagram of the control module in the Type-C earphone system with FM function provided by the embodiment of the present application, as Figure 2 shown, the control module includes a first button, a second button, a third button, a fourth button, a first resistor, a second resistor and a third resistor.

[0062] Among them, the resistance values of the first resistor, the second resistor and the third resistor are different, so that the voltage values of the pull-down are different when the corresponding buttons are triggered, and the control module determines which button is triggered by identifying different voltage values.

[0063] Further, one end of the first button, the second button, the third button and the fourth button is grounded.

[0064] The other end of the first button is connected to the second input end of the control module.

[0065] The other end of the second button is connected to the second input end of the control module through the first resistor, the other end of the third button is connected to the second input end of the control module through the second resistor, and the other end of the fourth button is connected to the second input end of the control module through the third resistor.

[0066] In this embodiment, if the earphone is in digital earphone mode, when the mobile phone is playing music, playing video and the like, the first button can be short pressed to realize the pause and play operation; the second button can be short pressed to realize the volume increase, and the third button can be short pressed to realize the volume decrease; the second button can be long pressed to realize the next song, and the third button can be long pressed to realize the previous song; the fourth button can be long pressed to realize the mode switching.

[0067] In this embodiment, when the user long presses the fourth button to switch the earphone to the FM radio mode, the earphone enters the table mode at this time, and the user can increase or decrease the broadcast serial number to be played through the second button and the third button.

[0068] On the other hand, when the earphone is in the take-off mode, the user can short press the first button to enter the manual search mode, in which case the current broadcast frequency can be displayed through the digital tube in the state display module, for example, when the current frequency is 102.3 Hz, the digital tube will display "102.3", and the user can use the second button and the third button to increase or decrease the frequency. After the user finds the required frequency, short press KEY4 to enter the station number selection, and the digital tube displays "P01" "P02" … "P30" representing 30 stored broadcast numbers, and the user can increase or decrease the broadcast number through the second button and the third button, and after selecting the storage number, the user can short press the fourth button to complete the station storage.

[0069] More specifically, when in FM radio mode, the volume adjustment of the earphone is different from that in digital earphone mode, and needs to enter the volume adjustment mode for increase or decrease. The user can short press the fourth button to enter the volume adjustment mode, and in this mode, the digital tube will display the volume level such as "01" "02" … "16", and the volume level can be 16 levels, and the user can increase or decrease the current volume through the second button and the third button, and after no operation timeout (for example, 3s) or short press of the fourth button, the volume adjustment mode can be exited.

[0070] More specifically, the earphone in FM radio mode can be controlled to exit the FM radio mode and switch back to the digital earphone mode by long pressing the fourth button.

[0071] Further, with reference to Figure 3 , Figure 3 is a circuit schematic diagram of an antenna module in a Type-C earphone system with FM function provided by the embodiment of the application, the antenna module comprising an FM antenna, a first inductor, a second inductor and a third inductor;

[0072] One end of the FM antenna is connected to one end of the first inductor, and the other end of the first inductor is connected to the third input end of the main control module.

[0073] One end of the second inductor and one end of the third inductor are connected to the other end of the first inductor, and the other end of the second inductor and the other end of the third inductor are grounded.

[0074] Further, with reference to Figure 4 , Figure 4 is a circuit schematic diagram of a radio module in a Type-C earphone system with FM function provided by the embodiment of the application, the radio module comprising a first voltage stabilizing tube, a first capacitor, a second capacitor, a fourth resistor and a microphone;

[0075] The input end of the radio module is connected to the fourth input end of the main control module through the first capacitor.

[0076] One end of the first voltage stabilizing tube is connected to the connection between the first capacitor and the input end of the radio module, and the other end is grounded.

[0077] One end of the fourth resistor is connected to an external digital signal source, the other end is connected to the connection between the first capacitor and the output end of the radio module, and the positive electrode of the microphone, and the negative electrode of the microphone is grounded; the first capacitor is connected in parallel across the microphone.

[0078] Specifically, the first voltage stabilizing tube is used for protecting the circuit, the fourth resistor is used for providing a bias voltage, the microphone is used for converting a sound signal into an electric signal, and the first capacitor and the second capacitor are used as coupling capacitors.

[0079] Further, with reference to Figure 5 , Figure 5 is a circuit schematic diagram of a display module in a Type-C earphone system with FM function provided by the embodiment of the present application, the display module comprising a number tube; the number tube comprising a plurality of input ends;

[0080] The plurality of input ends of the number tube are connected to the second output end of the main control module.

[0081] Specifically, the plurality of input ends of the number tube are connected to the main control module, and the main control module inputs signals to each input end of the number tube according to the current system state, so as to combine information characters such as numbers and letters, so as to facilitate the user to understand the system state and facilitate the user to operate.

[0082] Further, with reference to Figure 6 , Figure 6 is a circuit schematic diagram of a main control module in a Type-C earphone system with FM function provided by the embodiment of the present application, the main control module comprising a main control chip with a model of AB5602B;

[0083] The 1 pin of the main control chip is connected to the output end of the FM antenna through the first inductor.

[0084] Specifically, the earphone wire of the earphone is used as an antenna and is connected to the 1 pin of the main control chip to receive the FM broadcast signal of the current area.

[0085] The 14 pin of the main control chip is connected to the first button, the second button, the third button and the fourth button.

[0086] Specifically, one end of the four buttons is grounded, and the other end is connected to the 14th pin of the master control chip after being connected in series with resistors of different resistance values. Since the resistors connected in series with the four buttons are different, the voltage value generated by the 14th pin being pulled down by the button path when the button is triggered will be different. The master control chip can determine whether a button is triggered and which button is triggered by reading the voltage value of the 14th pin.

[0087] Further, with reference to Figure 7 , Figure 7 is the circuit schematic diagram of the nixie tube in the Type-C earphone system with FM function provided by the embodiment of the present application, the model of the nixie tube is LED1888_6p, and a plurality of input ends of the nixie tube include six pins;

[0088] The 1st pin of the nixie tube is connected to the 24th pin of the master control chip, the 2nd pin of the nixie tube is connected to the 23rd pin of the master control chip, the 3rd pin of the nixie tube is connected to the 22nd pin of the master control chip, the 4th pin of the nixie tube is connected to the 21st pin of the master control chip, the 5th pin of the nixie tube is connected to the 20th pin of the master control chip, and the 6th pin of the nixie tube is connected to the 12th pin of the master control chip.

[0089] Specifically, the earphone realizes the display function through a 6-pin nixie tube (LED1888_6p). The main structure of the nixie tube is an array composed of a plurality of LED light emitting diodes. When the nixie tube is used for display, the corresponding pins of the nixie tube are powered on, so that the LED at a specified position is lit up. For example, if the 1st pin is connected to a low level and the 2nd pin is connected to a high level, the B lamp of DIG1 shown in the figure is lit up. By quickly controlling the high and low levels of the six pins, the LEDs at different positions can be controlled to be lit up or turned off. Figure 7 The 1st pin of the nixie tube is connected to the 24th pin of the master control chip, the 2nd pin of the nixie tube is connected to the 23rd pin of the master control chip, the 3rd pin of the nixie tube is connected to the 22nd pin of the master control chip, the 4th pin of the nixie tube is connected to the 21st pin of the master control chip, the 5th pin of the nixie tube is connected to the 20th pin of the master control chip, and the 6th pin of the nixie tube is connected to the 12th pin of the master control chip.

[0090] In a second aspect, the present application provides an electronic device loaded with the Type-C earphone system with FM function described above.

[0091] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A Type-C earphone system with FM function, characterized in that, The application relates to a multi-mode earphone, which comprises a main control module, an antenna module, a receiving module, a control module, an interface and an earphone speaker. The first input end of the main control module is connected with the interface, and the first output end is connected with the earphone speaker. The second input end of the main control module is connected with the control module, and the control module comprises a plurality of keys, which are used for controlling the main control module to enter a corresponding earphone mode through the key state of the keys. The third input end of the main control module is connected with the antenna module, which is used for receiving and transmitting FM signals to the main control module through the antenna module. The fourth input end of the main control module is connected with the receiving module, which is used for receiving and transmitting analog signals to the main control module through the receiving module. The application further comprises a state display module, which comprises a digital tube and / or an indicating lamp.

2. The earphone system with FM function of Type-C according to claim 1, characterized in that, The second output end of the main control module is connected with the input end of the state display module, which is used for the state display module to acquire the module state of the main control module and to display the module state through the digital tube and / or the indicating lamp; the state display comprises broadcast frequency display. The control module comprises a first key, a second key, a third key, a fourth key, a first resistor, a second resistor and a third resistor; the resistance values of the first resistor, the second resistor and the third resistor are different. One end of the first key, the second key, the third key and the fourth key is grounded.

3. The earphone system with FM function of claim 2, wherein, The other end of the first key is connected with the second input end of the main control module. The other end of the second key is connected with the second input end of the main control module through the first resistor, the other end of the third key is connected with the second input end of the main control module through the second resistor, and the other end of the fourth key is connected with the second input end of the main control module through the third resistor. The antenna module comprises an FM antenna, a first inductor, a second inductor and a third inductor. The output end of the FM antenna is connected with one end of the first inductor, and the other end of the first inductor is connected with the third input end of the main control module.

4. The earphone system with FM function of claim 3, wherein, One end of the second inductor and one end of the third inductor are connected with the other end of the first inductor, and the other end of the second inductor and the other end of the third inductor are grounded. The receiving module comprises a first voltage stabilizing tube, a first capacitor, a second capacitor, a fourth resistor and a microphone. The input end of the receiving module is connected with the fourth input end of the main control module through the first capacitor.

5. The earphone system with FM function of claim 4, wherein, One end of the first voltage stabilizing tube is connected with the connection position of the first capacitor and the input end of the receiving module, and the other end is grounded. One end of the fourth resistor is connected with an external digital signal source, the other end is connected with the connection position of the first capacitor and the output end of the receiving module, and the positive electrode of the microphone, and the negative electrode of the microphone is grounded; the first capacitor is connected in parallel with the microphone. The display module comprises a digital tube; the digital tube comprises a plurality of input ends. The plurality of input ends of the digital tube are connected with the second output end of the main control module.

6. The earphone system with FM function of claim 5, wherein, The main control module comprises a main control chip with the model AB5602B. ​ 7. The earphone system with FM function of claim 6, wherein, ​ The 1-pin of the main control chip is connected with the output end of the FM antenna through the first inductor; The 14-pin of the main control chip is connected with the first button, the second button, the third button and the fourth button.

8. The earphone system with FM function of claim 7, wherein, The model of the nixie tube is LED1888_6p, and a plurality of input ends of the nixie tube include six pins; The 1-pin of the nixie tube is connected with the 24-pin of the main control chip, the 2-pin of the nixie tube is connected with the 23-pin of the main control chip, the 3-pin of the nixie tube is connected with the 22-pin of the main control chip, the 4-pin of the nixie tube is connected with the 21-pin of the main control chip, the 5-pin of the nixie tube is connected with the 20-pin of the main control chip, and the 6-pin of the nixie tube is connected with the 12-pin of the main control chip.

9. An electronic device, comprising: Load with the Type-C earphone system with FM function as claimed in any one of claims 1-8.

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