CN214707761U - Connecting device, earphone and connection converter - Google Patents
Connecting device, earphone and connection converter Download PDFInfo
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- CN214707761U CN214707761U CN202121344818.7U CN202121344818U CN214707761U CN 214707761 U CN214707761 U CN 214707761U CN 202121344818 U CN202121344818 U CN 202121344818U CN 214707761 U CN214707761 U CN 214707761U
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Abstract
The application provides a connecting device, an earphone and a connection converter, and belongs to the technical field of electronic chips. The connecting device includes: the device comprises a main controller, a resistance network module, a differential interface and an audio module; the audio module is used for generating a first audio signal and sending the first audio signal to the main controller, the main controller is used for converting the first audio signal into a first differential voltage signal and sending the first differential voltage signal to the differential interface through the resistor network module, and the differential interface is used for receiving the first differential voltage signal and sending the first differential voltage signal to the external equipment; the differential interface is further used for receiving a second differential voltage signal sent by the external device and sending the second differential voltage signal to the main controller, and the main controller is further used for receiving the second differential voltage signal, converting the second differential voltage signal into a second audio signal and sending the second audio signal to the audio module. According to the differential signal transmission circuit, the complexity of the circuit structure is reduced and the manufacturing cost is saved while differential signal transmission can be realized.
Description
Technical Field
The application relates to the technical field of electronic chips, in particular to a connecting device, an earphone and a connection converter.
Background
A Low-Voltage Differential Signaling (LVDS) is a signal that utilizes an extremely Low Voltage swing to realize a high-speed Differential transmission rate, and is mainly applied to a connection line to realize information transmission with an electronic device at present.
In the prior art, the information transmission is usually realized by adopting a standard low-voltage differential signal chip, but the differential voltage of the standard low-voltage differential signal chip is not suitable for a mobile phone, and the standard low-voltage differential signal chip can only realize the unidirectional transmission of signals, so the standard low-voltage differential signal chip cannot be directly used.
At present, in order to implement the application of the low-voltage differential signal in the mobile phone, a high-speed operational amplifier design circuit is usually needed, and a high-speed operational amplifier and a peripheral circuit are added, so that the circuit form is relatively complex and the use cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a connecting device, an earphone and a connection converter, which can reduce the complexity of a circuit structure and save the manufacturing cost while realizing differential signal transmission.
The embodiment of the application is realized as follows:
in one aspect of the embodiments of the present application, a connection device is provided, including: the device comprises a main controller, a resistance network module, a differential interface and an audio module;
the output end of the main controller is connected with the input end of the resistance network module, the output end of the resistance network module is connected with the differential interface, the differential interface is also connected with the input end of the main controller, and the audio signal end of the main controller is also connected with the audio module;
the audio module is used for generating a first audio signal and sending the first audio signal to the main controller, the main controller is used for converting the first audio signal into a first differential voltage signal and sending the first differential voltage signal to the differential interface through the resistor network module, and the differential interface is used for receiving the first differential voltage signal and sending the first differential voltage signal to the external equipment;
the differential interface is further used for receiving a second differential voltage signal sent by the external device and sending the second differential voltage signal to the main controller, and the main controller is further used for receiving the second differential voltage signal, converting the second differential voltage signal into a second audio signal and sending the second audio signal to the audio module.
Optionally, the master comprises a plurality of output ports and two input ports;
the output ports are respectively connected with the resistance network module, and the two input ports are respectively connected with the differential interface.
Optionally, the resistance network module comprises: the input ends, the resistance network, the first output end and the second output end are in one-to-one correspondence with the output ends of the main controller;
wherein, each input end is respectively connected with the corresponding output port in the main controller;
the resistor network is respectively connected with each input end, the first output end and the second output end;
the first output end and the second output end are also respectively connected with a differential interface.
Optionally, the resistive network comprises:
the circuit comprises a plurality of resistor groups, a plurality of input ends and a plurality of output ends, wherein each resistor group comprises at least one resistor, and each resistor in each resistor group corresponds to one of the input ends;
the one end and the input that correspond of each resistance are connected, and the other end and the output that the resistance group at place corresponds of each resistance are connected, and the output that the resistance group corresponds includes: a first output terminal or a second output terminal.
Optionally, the resistor group comprises: a first resistor group and a second resistor group, the resistor network further comprising: a diode;
the input end of the diode is connected with the other end of each resistor in the first resistor group and the first output end, and the output end of the diode is connected with the other end of each resistor in the second resistor group and the second output end.
Optionally, the resistor network further comprises: a first capacitor and a second capacitor;
one end of the first capacitor is connected with the other end of each resistor in the first resistor group and the first output end, and the other end of the first capacitor is grounded;
one end of the second capacitor is connected with the other end of each resistor in the second resistor group and the second output end, and the other end of the second capacitor is grounded.
Optionally, the plurality of output ports of the master comprises: four output ports, the multiple inputs of resistance network module include: a first input terminal, a second input terminal, a third input terminal, a fourth input terminal;
the resistor network is respectively connected with the first input end, the second input end, the third input end, the fourth input end, the first output end and the second output end.
Optionally, the first resistor group comprises: first resistance, second resistance group includes: a third resistor and a fourth resistor;
one end of the first resistor is connected with the first input end, and the other end of the first resistor is connected with the first output end;
one end of the second resistor is connected with the second input end, and the other end of the second resistor is connected with the first output end;
one end of the third resistor is connected with the third input end, and the other end of the third resistor is connected with the second output end;
one end of the fourth resistor is connected with the fourth input end, and the other end of the fourth resistor is connected with the second output end.
Optionally, the operating state of the diode includes: a closed state and an open state;
when the working state of the diode is a closed state, the resistance values of the first resistor and the third resistor are determined according to the first differential voltage signal, the voltage drop of the diode and the voltage value output by the first output end respectively;
when the working state of the diode is an off state, the resistance values of the first resistor, the second resistor, the third resistor and the fourth resistor are determined according to the first differential voltage signal, the voltage value output by the first output end and the voltage value output by the second output end respectively.
In another aspect of the embodiments of the present application, there is provided a headset including: the audio playing device is connected with an audio module of the connecting device.
In another aspect of the embodiments of the present application, there is provided a connection converter, including: the adapter comprises a connecting device and at least one adapter, wherein the adapter is connected with the connecting device.
The beneficial effects of the embodiment of the application include:
in the connection device, the earphone and the connection converter provided by the embodiment of the application, the output end of the main controller is connected with the input end of the resistance network module, the output end of the resistance network module is connected with the differential interface, the differential interface is also connected with the input end of the main controller, and the audio signal end of the main controller is also connected with the audio module; the audio module is used for generating a first audio signal and sending the first audio signal to the main controller, the main controller is used for converting the first audio signal into a first differential voltage signal and sending the first differential voltage signal to the differential interface through the resistor network module, and the differential interface is used for receiving the first differential voltage signal and sending the first differential voltage signal to the external equipment; the differential interface is further used for receiving a second differential voltage signal sent by the external device and sending the second differential voltage signal to the main controller, and the main controller is further used for receiving the second differential voltage signal, converting the second differential voltage signal into a second audio signal and sending the second audio signal to the audio module. The first differential voltage signal output by the main controller can be judged and processed through the resistor network module to obtain a differential result of the differential voltage signal, so that the differential result can be sent to external equipment through the differential interface, and the differential result can be completed only by the resistor network module when the differential result is carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a first schematic structural diagram of a connection device according to an embodiment of the present disclosure;
fig. 2 is a second schematic structural diagram of a connection device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram three of a connection device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a connection device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a connection device according to an embodiment of the present application;
fig. 6 is a first schematic diagram illustrating an equivalent structure of a resistor network module according to an embodiment of the present disclosure;
fig. 7 is a second schematic diagram illustrating an equivalent structure of a resistor network module according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an earphone according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a connection converter according to an embodiment of the present application.
Icon: 100-a master controller; 200-a resistive network module; 201-a first input; 202-a second input; 203-third input terminal; 204-a fourth input; 210-a resistor network; 211-a first resistor group; 212-a second resistor set; 213-a diode; 214-a first resistance; 215-a second resistance; 216-a third resistance; 217-fourth resistance; 218-a first capacitance; 219 — a second capacitance; 220 — a first output; 230-a second output; 300-differential interface; 400-an audio module; 10-a connecting means; 20-an audio playing device; 30-switching joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The following specifically explains a specific structural connection relationship of the connection device provided in the embodiment of the present application.
Fig. 1 is a first schematic structural diagram of a connection device according to an embodiment of the present application, and referring to fig. 1, the connection device includes: a master controller 100, a resistance network module 200, a differential interface 300, and an audio module 400; the output end of the master controller 100 is connected with the input end of the resistance network module 200, the output end of the resistance network module 200 is connected with the differential interface 300, the differential interface 300 is further connected with the input end of the master controller 100, and the audio signal end of the master controller 100 is further connected with the audio module 400; the audio module 400 is configured to generate a first audio signal and send the first audio signal to the master controller 100, the master controller 100 is configured to convert the first audio signal into a first differential voltage signal and send the first differential voltage signal to the differential interface 300 through the resistor network module 200, and the differential interface 300 is configured to receive the first differential voltage signal and send the first differential voltage signal to an external device; the differential interface 300 is further configured to receive a second differential voltage signal sent by the external device and send the second differential voltage signal to the master controller 100, and the master controller 100 is further configured to receive the second differential voltage signal and convert the second differential voltage signal into a second audio signal, and send the second audio signal to the audio module 400.
Optionally, the master controller 100 may be a Micro Controller Unit (MCU) or other types of control chips, which is not limited herein, and any master controller may implement the signal parsing function and the signal transmission function that need to be completed in this embodiment.
Alternatively, the resistor network module 200 may be a network module composed of a plurality of electronic devices, and the electronic devices used may be resistors, capacitors, wires, etc., which are relatively simple electronic device network structures.
Alternatively, the differential interface 300 may be a connector for accessing an external device, wherein the external device may be an electronic device, such as: the present disclosure relates to a mobile phone, a computer, a tablet computer, and the like, and is not limited in particular. The differential interface 300 may specifically be an electronic plug for accessing a female socket in an electronic device, such as: an earphone plug, a lightning interface plug or an android interface plug and the like are all electronic plugs capable of transmitting differential signals.
Alternatively, the audio module 400 may be a CODEC chip (audio coding and decoding chip), and may be specifically used for encoding and decoding chip signals, such as: the signal sent by the master 100 may be decoded to obtain other audio signals in corresponding formats, or the audio signals in other formats may be encoded to obtain the audio signals in formats that can be recognized by the master 100, which is not limited herein.
Optionally, after the connection device is connected to the external device, the connection device may receive a signal sent by the external device, or may send a signal to the external device, and the above two processes are explained below separately.
When transmitting signals to the external device, the audio module 400 may generate the first audio signal, where the first audio signal may be an audio signal that can be recognized by the master controller 100 and obtained by encoding the audio module 400, and after the first audio signal is transmitted to the master controller 100, the master controller 100 may convert the first audio signal into a first differential voltage signal and transmit the first differential voltage signal to the differential interface 300 through the resistor network module 200, where specifically, the master controller 100 may convert the first audio signal into a first differential voltage signal capable of being output in multiple paths, and the multiple paths of differential voltage signals may obtain corresponding differential results after passing through the resistor network module 200, that is, two paths of differential signals, one path is a D + signal and the other path is a D-signal, the resistor network module 200 may transmit the two paths of signals to the differential interface 300, and after the differential interface 300 receives the differential results of the first differential voltage signal, the difference result can be sent to the external device, so that the process is realized.
When receiving a signal of the external device, the differential interface 300 may receive a second differential voltage signal sent by the external device, where the second differential voltage signal is two paths of differential signals, which are the D + signal and the D-signal, respectively, the differential interface 300 may send the second differential voltage signal to the master controller 100 after receiving the second differential voltage signal, the master controller 100 may convert the second differential voltage signal into a second audio signal after receiving the second differential voltage signal, and send the second audio signal to the audio module 400, and the audio module 400 may perform decoding processing after receiving the second audio signal to obtain an audio signal in a corresponding required format, which is not limited specifically herein.
In the connection device provided by the embodiment of the application, the output end of the main controller is connected with the input end of the resistance network module, the output end of the resistance network module is connected with the differential interface, the differential interface is also connected with the input end of the main controller, and the audio signal end of the main controller is also connected with the audio module; the audio module is used for generating a first audio signal and sending the first audio signal to the main controller, the main controller is used for converting the first audio signal into a first differential voltage signal and sending the first differential voltage signal to the differential interface through the resistor network module, and the differential interface is used for receiving the first differential voltage signal and sending the first differential voltage signal to the external equipment; the differential interface is further used for receiving a second differential voltage signal sent by the external device and sending the second differential voltage signal to the main controller, and the main controller is further used for receiving the second differential voltage signal, converting the second differential voltage signal into a second audio signal and sending the second audio signal to the audio module. The first differential voltage signal output by the main controller can be judged and processed through the resistor network module to obtain a differential result of the differential voltage signal, so that the differential result can be sent to external equipment through the differential interface, and the differential result can be completed only by the resistor network module when the differential result is carried out.
The specific structure of the master and the connection relationship between the master and other structures in the connection device in the embodiment of the present application will be specifically explained below.
Fig. 2 is a second structural schematic diagram of a connection device according to an embodiment of the present disclosure, referring to fig. 2, a master controller 100 includes a plurality of output ports and two input ports; the plurality of output ports are respectively connected to the resistor network module 200, and the two input ports are respectively connected to the differential interface 300.
Alternatively, the plurality of output ports may be ports for connecting the master 100 and the resistor network module 200, wherein the flow direction of the signal is unidirectional and can be transmitted to the resistor network module 200 by the master 100. The specific transmission may be the first differential signal, and a corresponding differential result may be obtained through the resistor network module 200.
Alternatively, the two input ports may be ports for connecting the differential interface 300 and the master 100, wherein the flow direction of the signals is also unidirectional, and the signals can be transmitted to the master 100 by the differential interface 300. Specifically, the second differential voltage signal may be transmitted, and the master 100 may perform corresponding signal conversion.
Illustratively, the plurality of output ports of the master 100 shown in fig. 2 may be exemplified by 4, and the plurality of input ports may be exemplified by 2.
The specific structure of the resistor network module of the connection device and the connection of the resistor network module with other devices in the embodiment of the present application will be specifically explained below.
Fig. 3 is a third schematic structural diagram of a connection device according to an embodiment of the present application, and referring to fig. 3, a resistor network module 200 includes: a plurality of input terminals, a resistor network 210, a first output terminal 220, and a second output terminal 230, which correspond to the plurality of output ports of the master 100 one to one; wherein, each input end is respectively connected with the corresponding output port in the main controller 100; the resistor network 210 is connected to each input terminal, the first output terminal 220 and the second output terminal 230 respectively; the first output terminal 220 and the second output terminal 230 are also respectively connected to the differential interface 300.
Alternatively, the number of inputs in resistor network module 200 may be the same as the number of outputs of master 100, each output of master 100 corresponding to an input of resistor network module 200, for example: if the master 100 is provided with four outputs, the resistor network module 200 has four inputs.
Alternatively, the resistor network 210 may be a network structure for connecting a plurality of input terminals and two output terminals in the resistor network module 200, and may be composed of a plurality of electronic devices such as resistors and capacitors.
Optionally, the first output terminal 220 and the second output terminal 230 are respectively connected to the differential interface 300, and may specifically respectively transmit D + and D-signals, that is, a differential result of the first differential signal.
For example, in fig. 3, four input terminals are taken as an example, and the four input terminals are respectively connected to four output ports of the master 100 in sequence.
Optionally, the plurality of output ports of the master 100 include: the four output ports, the plurality of inputs of the resistor network module 200 include: a first input 201, a second input 202, a third input 203, a fourth input 204; the resistor network 210 is connected to the first input terminal 201, the second input terminal 202, the third input terminal 203, the fourth input terminal 204, the first output terminal 220, and the second output terminal 230, respectively.
The specific structure of the resistor network in the resistor network module provided in the embodiment of the present application is specifically explained below.
Fig. 4 is a fourth schematic structural diagram of a connection device according to an embodiment of the present application, referring to fig. 4, a resistor network 210 includes: the circuit comprises a plurality of resistor groups, a plurality of input ends and a plurality of output ends, wherein each resistor group comprises at least one resistor, and each resistor in each resistor group corresponds to one of the input ends; the one end and the input that correspond of each resistance are connected, and the other end and the output that the resistance group at place corresponds of each resistance are connected, and the output that the resistance group corresponds includes: a first output 220 or a second output 230.
Optionally, the resistor network 210 may include a plurality of resistor groups, each resistor group may include a plurality of resistors, and the resistors may be connected in series, parallel, or the like, and any resistor group that can obtain a resistance value corresponding to a requirement is not limited specifically herein.
For example, the resistor network shown in fig. 4 may include two resistor sets, i.e., the first resistor set 211 and the second resistor set 212.
Optionally, the resistor group comprises: first resistor bank 211 and second resistor bank 212, resistor network 210 further includes: a diode 213; the input terminal of the diode 213 is connected to the other terminal of each resistor in the first resistor group 211 and the first output terminal 220, and the output terminal of the diode 213 is connected to the other terminal of each resistor in the second resistor group 212 and the second output terminal 230.
Alternatively, the diode 213 may be a diode having a voltage drop, which is a difference between voltages of the first output terminal 220 and the second output terminal 230, and when the voltage at the input terminal of the diode 213 is greater than the voltage at the output terminal, the diode 213 is in a conducting state; when the voltage at the input terminal of the diode 213 is smaller than the voltage at the output terminal, the diode 213 is in an off state.
Illustratively, each resistor group may include two resistors, which may be connected in parallel with each other, and each resistor group shown in fig. 4 includes two resistors.
Optionally, the first resistor group 211 includes: first resistance 214, second resistance 215, second resistance group 212 includes: a third resistor 216, a fourth resistor 217; one end of the first resistor 214 is connected to the first input terminal 201, and the other end of the first resistor 214 is connected to the first output terminal 220; one end of the second resistor 215 is connected to the second input terminal 202, and the other end of the second resistor 215 is connected to the first output terminal 220; one end of the third resistor 216 is connected to the third input terminal 203, and the other end of the third resistor 216 is connected to the second output terminal 230; one end of the fourth resistor 217 is connected to the fourth input terminal 204, and the other end of the fourth resistor 217 is connected to the second output terminal 230.
Alternatively, the resistance values of the plurality of resistors may be set according to actual requirements, and are not specifically set here.
Optionally, the first resistor 214, the second resistor 215, the third resistor 216 and the fourth resistor 217 may be respectively connected to the aforementioned first input terminal 201, the second input terminal 202, the third input terminal 203 and the fourth input terminal 204, that is, respectively connected to the four output terminals of the master 100.
Another specific structure and a specific connection relationship of the resistor network in the resistor network module provided in the embodiment of the present application are specifically explained below.
Fig. 5 is a fifth schematic structural diagram of a connection device according to an embodiment of the present application, referring to fig. 5, the resistor network 210 further includes: a first capacitor 218, a second capacitor 219; one end of the first capacitor 218 is connected to the other end of each resistor in the first resistor group 211 and the first output end 220, and the other end of the first capacitor 218 is grounded; one end of the second capacitor 219 is connected to the other end of each resistor in the second resistor group 212 and the second output terminal 230, and the other end of the second capacitor 219 is grounded.
Alternatively, the first capacitor 218 and the second capacitor 219 may be specifically used for filtering the signal. The specific capacitance values of the first capacitor 218 and the second capacitor 219 can be set correspondingly according to actual requirements, and are not limited in particular. The two capacitors and the resistors form a low-pass filter, so that high-frequency noise can be effectively filtered, and the quality of a differential result of the differential voltage signal is ensured.
The specific structure of the equivalent circuit when the aforementioned diode is closed and open is explained below by two specific embodiments, respectively.
Fig. 6 is a schematic diagram of an equivalent structure of a resistor network module according to an embodiment of the present application, please refer to fig. 6, where fig. 6 illustrates an example where a diode is in a closed state.
The circuit configuration of the first resistor 214 and the third resistor 216 is configured to receive the circuit configuration of the high-resistance state second resistor 215 and the fourth resistor 217 as an output state, and specific circuit conditions at this time are as follows:
(VDD-Vc)/{R3/(R1+R3)}+Vc＝(D+)；
VDD is the voltage of the first differential voltage signal, i.e., the voltage outputted by the main controller 100, Vc is the voltage drop of the diode, R1 is the resistance of the first resistor 214, R3 is the resistance of the third resistor 216, and D + is the voltage outputted by the first output terminal 220.
Wherein, (D +) - (D-) ═ Vc; d-is the magnitude of the voltage value output by the second output terminal 230.
For example, when D + is 500mV, if Vc is 200mV, then D-is 300 mV.
At this time, the output of the first output terminal 220 is high, the output of the second output terminal 230 is low, the diode 213 is turned on in the forward direction, and the voltage drop Vc is generated, and the differential result is externally represented as TX _ H (i.e., the representation form that D + is greater than D ").
In the TX _ H state, the current of power consumption of the resistor network is (VDD-Vc)/(R1+ R3).
Fig. 7 is a schematic diagram of an equivalent structure of a resistor network module according to an embodiment of the present application, please refer to fig. 7, where fig. 7 illustrates an example where a diode is in a disconnected state.
The first resistor 214, the second resistor 215, the third resistor 216, and the fourth resistor 217 are all configured to be in an output state, and specific circuit conditions at this time are as follows:
VDD*R1/(R1+R2)＝D+；
VDD*R3/(R3+R4)＝D-；
wherein R2 is the resistance of the second resistor 215, and R4 is the resistance of the fourth resistor 217.
At this time, the output of the first output terminal 220 is low, the output of the second output terminal 230 is high, the diode 213 is in the reverse cut-off state, and the differential result is externally represented as TX _ L (i.e., the representation form that D + is smaller than D-).
In the TX _ L state, the current of the power consumption of the resistor network is VDD/(R1+ R2) + VDD/(R3 + R4).
According to the above related calculation formula, the smaller the value of the resistor is, the higher the power consumption is, but the smaller the impedance is, the driving capability is also increased, and the balance point between the power consumption and the driving capability needs to be evaluated during configuration, so as to correspondingly set the resistance value of each resistor.
Optionally, the common-mode voltage of the resistor network in the embodiment of the present application may be 0 to 2V, the differential-mode voltage may be 0 to 800mV, and the bidirectional differential transmission may be a dedicated LVDS interface, that is, the differential interface 300.
The following specifically explains a specific connection relationship when the connection device provided in the embodiment of the present application is applied to a headset.
Fig. 8 is a schematic structural diagram of an earphone according to an embodiment of the present application, please refer to fig. 8, where the earphone includes: the device comprises a connecting device 10 and at least one audio playing device 20, wherein the audio playing device 20 is connected with an audio module of the connecting device 10.
Alternatively, the audio playing device 20 may be any type of device for playing audio, such as a headphone or a speaker, and may be connected to the connecting device through a relevant connecting line, and may be separately connected or integrated, and is not limited herein.
The following is a specific explanation of a connection relationship when the connection device provided in the embodiment of the present application is applied to a connection converter.
Fig. 9 is a schematic structural diagram of a connection converter according to an embodiment of the present application, please refer to fig. 9, in which the connection converter includes: a connecting device 10 and at least one adapter 30, the adapter 30 being connected to the connecting device 10.
Optionally, the connection converter may be specifically configured to perform audio switching, for example, may convert a certain type of audio interface into another type of audio interface, where the conversion connector 30 may be any type of connector, for example: the standard 3.5mm headphone connector, the headphone connector of lightning interface, the headphone connector of android format, the connector of the MIC-equipped module that fills while listening, etc. are not specifically limited herein, and may specifically be one or more adapter connectors 30 that are set up according to actual needs.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A connection device, comprising: the device comprises a main controller, a resistance network module, a differential interface and an audio module;
the output end of the main controller is connected with the input end of the resistance network module, the output end of the resistance network module is connected with the differential interface, the differential interface is also connected with the input end of the main controller, and the audio signal end of the main controller is also connected with the audio module;
the audio module is configured to generate a first audio signal and send the first audio signal to the master controller, the master controller is configured to convert the first audio signal into a first differential voltage signal and send the first differential voltage signal to the differential interface through the resistor network module, and the differential interface is configured to receive the first differential voltage signal and send the first differential voltage signal to an external device;
the differential interface is further configured to receive a second differential voltage signal sent by the external device and send the second differential voltage signal to the master controller, and the master controller is further configured to receive the second differential voltage signal and convert the second differential voltage signal into a second audio signal and send the second audio signal to the audio module.
2. The connection apparatus of claim 1, wherein the master includes a plurality of output ports and two input ports;
the output ports are respectively connected with the resistance network module, and the two input ports are respectively connected with the differential interface.
3. The connection device of claim 2, wherein the resistor network module comprises: the input ends, the resistance network, the first output end and the second output end are in one-to-one correspondence with the output ends of the main controller;
wherein, each input end is respectively connected with the corresponding output port in the main controller;
the resistance network is respectively connected with each input end, the first output end and the second output end;
the first output end and the second output end are also respectively connected with the differential interface.
4. The connection device of claim 3, wherein the resistive network comprises:
the circuit comprises a plurality of resistor groups, a plurality of input ends and a plurality of output ends, wherein each resistor group comprises at least one resistor, and each resistor in each resistor group corresponds to the input ends one by one;
one end of each resistor is connected with the corresponding input end, the other end of each resistor is connected with the output end that the resistance group at place corresponds, the output that the resistance group corresponds includes: the first output terminal or the second output terminal.
5. The connection device of claim 4, wherein the resistor bank comprises: a first resistor group and a second resistor group, the resistor network further comprising: a diode;
the input end of the diode is connected with the other end of each resistor in the first resistor group and the first output end, and the output end of the diode is connected with the other end of each resistor in the second resistor group and the second output end.
6. The connection device of claim 5, wherein the resistive network further comprises: a first capacitor and a second capacitor;
one end of the first capacitor is connected with the other end of each resistor in the first resistor group and the first output end, and the other end of the first capacitor is grounded;
one end of the second capacitor is connected with the other end of each resistor in the second resistor group and the second output end, and the other end of the second capacitor is grounded.
7. The connection apparatus of claim 5 or 6, wherein the plurality of output ports of the master comprise: four output ports, the plurality of inputs of the resistor network module including: a first input terminal, a second input terminal, a third input terminal, a fourth input terminal;
the resistance network is respectively connected with the first input end, the second input end, the third input end, the fourth input end, the first output end and the second output end.
8. The connection apparatus of claim 7, wherein the first resistor bank comprises: the first resistance, second resistance, the second resistance group includes: a third resistor and a fourth resistor;
one end of the first resistor is connected with the first input end, and the other end of the first resistor is connected with the first output end;
one end of the second resistor is connected with the second input end, and the other end of the second resistor is connected with the first output end;
one end of the third resistor is connected with the third input end, and the other end of the third resistor is connected with the second output end;
one end of the fourth resistor is connected with the fourth input end, and the other end of the fourth resistor is connected with the second output end.
9. The connection device of claim 8, wherein the operational state of the diode comprises: a closed state and an open state;
when the working state of the diode is a closed state, the resistance values of the first resistor and the third resistor are respectively determined according to the first differential voltage signal, the voltage drop of the diode and the voltage value output by the first output end;
when the working state of the diode is an off state, the resistance values of the first resistor, the second resistor, the third resistor and the fourth resistor are determined according to the first differential voltage signal, the voltage value output by the first output end and the voltage value output by the second output end respectively.
10. An earphone, characterized in that the earphone comprises: a connection device according to any one of claims 1-9 and at least one audio playback device connected to an audio module of the connection device.
11. A connection converter, characterized in that it comprises: a connection device as claimed in any one of claims 1 to 9 and at least one adapter connected to the connection device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121344818.7U CN214707761U (en) | 2021-06-17 | 2021-06-17 | Connecting device, earphone and connection converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121344818.7U CN214707761U (en) | 2021-06-17 | 2021-06-17 | Connecting device, earphone and connection converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242194A (en) * | 2021-06-17 | 2021-08-10 | 浙江地芯引力科技有限公司 | Connecting device, earphone and connection converter |
| CN116094877A (en) * | 2023-04-11 | 2023-05-09 | 浙江地芯引力科技有限公司 | Differential signal transmission circuit and data transmission device |
-
2021
- 2021-06-17 CN CN202121344818.7U patent/CN214707761U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242194A (en) * | 2021-06-17 | 2021-08-10 | 浙江地芯引力科技有限公司 | Connecting device, earphone and connection converter |
| CN116094877A (en) * | 2023-04-11 | 2023-05-09 | 浙江地芯引力科技有限公司 | Differential signal transmission circuit and data transmission device |
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