CN216852326U - Signal switching circuit and bluetooth speaker - Google Patents
Signal switching circuit and bluetooth speaker Download PDFInfo
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Abstract
The application provides a signal switching circuit, which receives a data signal or an audio signal through a signal input module; the first channel is conducted through the first switch module according to the data signal, and the second channel is conducted according to the audio signal; when the audio signal is a Bluetooth audio signal, the third channel and the fourth channel are conducted through the second switch module, and when the audio signal is an analog audio signal, the fifth channel and the sixth channel are conducted; and outputting the data signal, the Bluetooth audio signal or the analog audio signal through the signal output module. This application switches on data signal and audio signal through first switch module switching, switches on bluetooth audio signal and simulation audio signal through second switch module to only need an interface, just can insert data signal and audio signal simultaneously, reduce the interface use amount of product, reduce the product volume, reduce product cost.
Description
Technical Field
This application belongs to signal switching technical field, especially relates to a signal switching circuit and bluetooth speaker.
Background
The electronic product interface refers to a connection port between two hardware devices, and includes both a physical interface and a logical data transmission interface. For example, the USB interface with the Universal Serial Bus (USB-C) and the audio input interface (AUXIliary, AUX) is provided.
However, in the existing electronic products, the USB-C interface can only be applied to power charging and data transmission (e.g., program burning and debugging), and the AUX interface can only be applied to audio input, which results in a larger overall size and higher cost of the product.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a signal switching circuit, and aims to solve the problems of large size and high cost of a traditional signal switching circuit.
In order to achieve the above object, in a first aspect, an embodiment of the present application provides a signal switching circuit, which includes a signal input module, a first switch module, a second switch module, and a signal output module;
the first switch module is electrically connected with the signal input module, the second switch module and the signal output module, and the second switch module is electrically connected with the signal output module;
the signal input module is configured to receive a data signal or an audio signal;
the first switch module is configured to switch on a first channel according to the data signal and switch on a second channel according to the audio signal;
the second switch module is configured to conduct a third channel and a fourth channel when the audio signal is a Bluetooth audio signal, and conduct a fifth channel and a sixth channel when the audio signal is an analog audio signal;
the signal output module is configured to output the data signal, the Bluetooth audio signal or the analog audio signal.
In one possible implementation of the first aspect, the signal output module includes a data output unit, a left channel unit, and a right channel unit, the bluetooth audio signals include a left channel bluetooth audio signal and a right channel bluetooth audio signal, and the analog audio signals include a left channel analog audio signal and a right channel analog audio signal;
the data output unit is electrically connected with the first switch module, and the left sound channel unit and the right sound channel unit are electrically connected with the second switch module;
the data output unit is configured to receive the data signal and output the data signal;
the left channel unit is configured to receive and output the left channel Bluetooth audio signal or the left channel analog audio signal;
the right channel unit is configured to receive and output the right channel Bluetooth audio signal or the right channel analog audio signal.
In another possible implementation of the first aspect, the signal switching circuit further comprises a microphone module;
the microphone module is electrically connected with the first switch module;
the microphone module is configured to receive an audio acquisition signal or a call acquisition signal.
In another possible implementation manner of the first aspect, the microphone module includes a third switching unit, an audio acquisition unit, and a call acquisition unit;
the third switch unit is electrically connected with the first switch module, the audio acquisition unit and the call acquisition unit;
the third switching unit is configured to turn on a seventh channel when an audio acquisition signal is received and turn on an eighth channel when a call acquisition signal is received;
the audio acquisition unit is configured to acquire the audio acquisition signal;
the call acquisition unit is configured to acquire the call acquisition signal.
In another possible implementation of the first aspect, the first switch module comprises a two-channel analog switch;
the sixth pin, the seventh pin and the ninth pin of the double-channel analog switch are electrically connected with the signal input module, the second pin and the third pin of the double-channel analog switch are electrically connected with the second switch module, and the first pin and the tenth pin of the double-channel analog switch are electrically connected with the data output unit.
In another possible implementation of the first aspect, the second switch module includes a first four-channel analog switch;
the first pin and the ninth pin of the first four-channel analog switch are electrically connected with the first switch module, the seventh pin and the eighth pin of the first four-channel analog switch are electrically connected with the left sound channel unit, and the fifteenth pin and the sixteenth pin of the first four-channel analog switch are electrically connected with the right sound channel unit.
In another possible implementation of the first aspect, the third switching unit comprises a second four-channel analog switch;
and a seventh pin of the second four-channel analog switch is electrically connected with the audio acquisition unit, and an eighth pin of the second four-channel analog switch is electrically connected with the call acquisition unit.
In another possible implementation of the first aspect, the signal switching circuit further includes a bluetooth module;
the Bluetooth module is electrically connected with the second switch module;
the Bluetooth module is configured to receive a Bluetooth audio signal from the outside.
In another possible implementation manner of the first aspect, the signal switching circuit further includes a power amplifier module;
the power amplifier module is electrically connected with the first switch module and the second switch module;
the power amplification module is configured to amplify the audio signal.
In a second aspect, an embodiment of the present application provides a bluetooth speaker, including the signal switching circuit.
Compared with the prior art, the embodiment of the application has the advantages that: the signal switching circuit switches on the data signal and the audio signal through the first switch module, and switches on the Bluetooth audio signal and the analog audio signal through the second switch module, so that the data signal and the audio signal can be simultaneously accessed through only one interface, the compatibility of the interface is improved, the conflict between a wired sound source and a wireless sound source is avoided, the interface usage amount of a product is reduced, the product size is reduced, and the product cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a first structure of a signal switching circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a second structure of a signal switching circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a third structure of a signal switching circuit according to an embodiment of the present disclosure;
fig. 4 is a circuit diagram of a signal switching circuit according to an embodiment of the present application;
fig. 5 is a schematic diagram of a fourth structure of a signal switching circuit according to an embodiment of the present disclosure.
Description of reference numerals:
the voice-frequency-based voice communication system comprises a signal input module 1, a first switch module 2, a second switch module 3, a signal output module 4, a data output unit 41, a left sound channel unit 42, a right sound channel unit 43, a microphone module 5, a third switch unit 51, an audio acquisition unit 52, a call acquisition unit 53, a Bluetooth module 6 and a power amplifier module 7.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
At present, interfaces in electronic products generally comprise a USB interface and an AUX interface, power and data transmission is carried out through the USB interface, audio transmission is carried out through the AUX interface, and the electronic products are large in overall size and high in cost.
Therefore, the signal switching circuit switches on the data signal and the audio signal through the first switch module, switches on the Bluetooth audio signal and the analog audio signal through the second switch module, can simultaneously access the data signal and the audio signal through one interface, reduces the interface usage amount and the whole volume of an electronic product, and reduces the production cost of the electronic product.
The signal switching circuit provided by the present application is described in an exemplary manner with reference to the accompanying drawings: fig. 1 is a schematic diagram of a first structure of a signal switching circuit according to an embodiment of the present application, and as shown in fig. 1, for convenience of description, only parts related to the embodiment are shown, and detailed descriptions are as follows: illustratively, the signal switching circuit 100 of the present application includes a signal input module 1, a first switch module 2, a second switch module 3, and a signal output module 4;
the first switch module 2 is electrically connected with the signal input module 1, the second switch module 3 and the signal output module 4, and the second switch module 2 is electrically connected with the signal output module 4;
a signal input module 1 configured to receive a data signal or an audio signal;
a first switch module 2 configured to switch on a first channel according to a data signal and switch on a second channel according to an audio signal;
the second switch module 3 is configured to conduct the third channel and the fourth channel when the audio signal is a bluetooth audio signal, and conduct the fifth channel and the sixth channel when the audio signal is an analog audio signal;
a signal output module 4 configured to output a data signal, a bluetooth audio signal, or an analog audio signal.
In application, firstly, a signal is received through a signal input module, for example, the signal input module can adopt an SUB-C interface, and simultaneously judges whether the signal is a data signal or an audio signal, when the signal is the data signal, a first channel is conducted by a first switch module, and when the signal is the audio signal, a second channel is conducted by the first switch module; the data signal is directly output through the signal output module through the first channel, the audio signal is sent to the second channel module through the second channel, and meanwhile, whether the audio signal is a Bluetooth audio signal or an analog audio signal is judged.
Fig. 2 is a schematic diagram of a second structure of the signal switching circuit provided in the embodiment of the present application, and as shown in fig. 2, exemplarily, the signal output module 4 includes a data output unit 41, a left channel unit 42, and a right channel unit 42, the bluetooth audio signals include a left channel bluetooth audio signal and a right channel bluetooth audio signal, and the analog audio signals include a left channel analog audio signal and a right channel analog audio signal;
the data output unit 41 is electrically connected with the first switch module 2, and the left channel unit 42 and the right channel unit 43 are electrically connected with the second switch module 3;
a data output unit 41 configured to receive and output a data signal;
a left channel unit 42 configured to receive and output a left channel bluetooth audio signal or a left channel analog audio signal;
and a right channel unit 43 configured to receive and output a right channel bluetooth audio signal or a right channel analog audio signal.
In application, the data signal is output to the corresponding electronic device through the data output unit, because the audio signal is generally stereo, including a left channel audio and a right channel audio, a left channel bluetooth audio signal and a left channel analog audio signal are output through the left channel unit, and a right channel bluetooth audio signal or a right channel analog audio signal is output through the right channel unit for the user to listen.
Fig. 3 is a schematic diagram of a third structure of a signal switching circuit provided in the embodiment of the present application, as shown in fig. 3, the signal switching circuit further includes a microphone module 5 by way of example;
the microphone module 5 is electrically connected with the first switch module 2;
a microphone module 5 configured to receive an audio capture signal or a call capture signal.
In application, the microphone can also be used for receiving an external audio acquisition signal or a call acquisition signal and sending the audio acquisition signal or the call acquisition signal to the corresponding receiving chip.
As shown in fig. 3, the microphone module 5 exemplarily includes a third switching unit 51, an audio collecting unit 52, and a call collecting unit 53;
the third switch unit 51 is electrically connected with the first switch module 2, the audio acquisition unit 52 and the call acquisition unit 53;
a third switching unit 51 configured to turn on the seventh channel when the audio collecting signal is received and turn on the eighth channel when the call collecting signal is received;
an audio acquisition unit 52 configured to acquire an audio acquisition signal;
a call collection unit 53 configured to collect a call collection signal.
In application, the external audio acquisition signal is acquired through the audio acquisition unit, the external call acquisition signal is acquired through the call acquisition unit, the judgment is carried out through the third switch unit, the seventh channel is conducted and the audio acquisition signal is sent to the corresponding chip when the third switch unit receives the audio acquisition signal, and the eighth channel is conducted and the call acquisition signal is sent to the corresponding chip when the call acquisition signal is received.
Fig. 4 is a circuit diagram of a signal switching circuit provided in an embodiment of the present application, and as shown in fig. 4, for example, the first switch module 2 includes a two-channel analog switch IC 1;
the sixth pin, the seventh pin and the ninth pin of the dual-channel analog switch IC1 are electrically connected with the signal input module, the second pin and the third pin of the dual-channel analog switch IC1 are electrically connected with the second switch module, and the first pin and the tenth pin of the dual-channel analog switch IC1 are electrically connected with the data output unit.
In application, when the signal output module receives a data signal, the ninth pin of the dual-channel analog switch IC1 is at a high level, the sixth pin (D-/L common pin) of the dual-channel analog switch IC1 is internally connected to the first pin (D-pin) and further connected to the data output unit, and the seventh pin (D +/R common pin) of the dual-channel analog switch IC1 is internally connected to the tenth pin (D + pin) and further connected to the data output unit, so that the data signal is output through the data output unit.
When the signal output module receives an audio signal, the ninth pin of the dual-channel analog switch IC1 is at a low level, the sixth pin (D-/L common pin) of the dual-channel analog switch IC1 is internally connected with the third pin (L pin) and further connected with the second switch module, and the seventh pin (D +/R common pin) of the dual-channel analog switch IC1 is internally connected with the second pin (R pin) and further connected with the second switch module, so that the audio signal is sent to the second switch module.
As shown in fig. 4, the second switch module 3 illustratively includes a first four-channel analog switch IC 2;
the first pin and the ninth pin of the first four-channel analog switch IC2 are electrically connected to the first switch module 2, the seventh pin and the eighth pin of the first four-channel analog switch IC2 are electrically connected to the left audio channel unit 42, and the fifteenth pin and the sixteenth pin of the first four-channel analog switch IC2 are electrically connected to the right audio channel unit 43.
In application, when the second switch module receives a left channel bluetooth audio signal or a left channel analog audio signal, the second pin and the tenth pin of the first four-channel analog switch IC2 are grounded, so that the ninth pin and the sixth pin of the first four-channel analog switch IC2 are connected to each other, and further connected to the positive electrode SPK _ L _ P of the left speaker, and the negative electrode SPK _ L _ N of the left speaker is grounded.
When the second switch module receives a right channel bluetooth audio signal or a right channel analog audio signal, the first pin of the first four-channel analog switch IC2 is connected with the sixteenth pin, and then connected with the positive electrode SPK _ R _ P of the right speaker, and the negative electrode SPK _ R _ N of the right speaker is grounded, so that the audio signal is played through the left speaker and the right speaker for the user to listen.
As shown in fig. 4, the third switching unit 51 illustratively includes a second four-channel analog switch IC 3;
the seventh pin of the second four-channel analog switch IC3 is electrically connected to the audio capture unit 52, and the eighth pin of the second four-channel analog switch IC3 is electrically connected to the call capture unit 53.
In application, when the second four-channel analog switch IC3 receives an audio acquisition signal, the seventh pin of the second four-channel analog switch IC3 receives the audio acquisition signal and sends the audio acquisition signal to a corresponding processing chip, and when the second four-channel analog switch IC3 receives a call acquisition signal, the eighth pin of the second four-channel analog switch IC3 receives the audio acquisition signal and sends the audio acquisition signal to a corresponding processing chip, so that the received audio acquisition signal and the call acquisition signal can be distinguished.
Fig. 5 is a schematic diagram of a fourth structure of the signal switching circuit provided in the embodiment of the present application, as shown in fig. 5, the signal switching circuit further includes a bluetooth module 6 for example;
the Bluetooth module 6 is electrically connected with the second switch module 3;
and a Bluetooth module 6 configured to receive a Bluetooth audio signal from the outside.
In application, the Bluetooth audio signal received from the outside is processed through the Bluetooth module so as to achieve a better playing effect.
As shown in fig. 5, the signal switching circuit further includes a power amplifier module 7;
the power amplifier module 7 is electrically connected with the first switch module 2 and the second switch module 3;
a power amplification module 7 configured to amplify the audio signal.
In application, the audio signal output by the first switch module is amplified through the power amplifier module, so that the audio signal obtained by the second switch module is stronger, and subsequent processing and playing are facilitated.
The embodiment discloses a bluetooth speaker 200, which comprises a signal switching circuit.
In application, the signal switching circuit is arranged in the Bluetooth sound box, and a data signal or an audio signal is received through the signal input module; the first channel is conducted through the first switch module according to the data signal, and the second channel is conducted according to the audio signal; when the audio signal is a Bluetooth audio signal, a third channel and a fourth channel are conducted through a second switch module, and when the audio signal is an analog audio signal, a fifth channel and a sixth channel are conducted; data signals, Bluetooth audio signals or analog audio signals are output through the signal output module, so that the data signals and the audio signals can be simultaneously accessed only through one interface, the interface usage amount of a product is reduced, the product volume is reduced, and the product cost is reduced.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
Those of ordinary skill in the art will appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed signal switching circuit may be implemented in other manners. For example, the above-described signal switching circuit embodiments are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A signal switching circuit is characterized by comprising a signal input module, a first switch module, a second switch module and a signal output module;
the first switch module is electrically connected with the signal input module, the second switch module and the signal output module, and the second switch module is electrically connected with the signal output module;
the signal input module is configured to receive a data signal or an audio signal;
the first switch module is configured to switch on a first channel according to the data signal and switch on a second channel according to the audio signal;
the second switch module is configured to conduct a third channel and a fourth channel when the audio signal is a Bluetooth audio signal, and conduct a fifth channel and a sixth channel when the audio signal is an analog audio signal;
the signal output module is configured to output the data signal, the Bluetooth audio signal or the analog audio signal.
2. The signal switching circuit according to claim 1, wherein the signal output module includes a data output unit, a left channel unit, and a right channel unit, the bluetooth audio signals include a left channel bluetooth audio signal and a right channel bluetooth audio signal, and the analog audio signals include a left channel analog audio signal and a right channel analog audio signal;
the data output unit is electrically connected with the first switch module, and the left sound channel unit and the right sound channel unit are electrically connected with the second switch module;
the data output unit is configured to receive the data signal and output the data signal;
the left channel unit is configured to receive and output the left channel Bluetooth audio signal or the left channel analog audio signal;
the right channel unit is configured to receive and output the right channel Bluetooth audio signal or the right channel analog audio signal.
3. The signal switching circuit of claim 1, wherein the signal switching circuit further comprises a microphone module;
the microphone module is electrically connected with the first switch module;
the microphone module is configured to receive an audio acquisition signal or a call acquisition signal.
4. The signal switching circuit of claim 3, wherein the microphone module comprises a third switching unit, an audio acquisition unit, and a call acquisition unit;
the third switch unit is electrically connected with the first switch module, the audio acquisition unit and the call acquisition unit;
the third switching unit is configured to turn on a seventh channel when an audio acquisition signal is received and turn on an eighth channel when a call acquisition signal is received;
the audio acquisition unit is configured to acquire the audio acquisition signal;
the call acquisition unit is configured to acquire the call acquisition signal.
5. The signal switching circuit of claim 2, wherein the first switch module comprises a two-channel analog switch;
the sixth pin, the seventh pin and the ninth pin of the double-channel analog switch are electrically connected with the signal input module, the second pin and the third pin of the double-channel analog switch are electrically connected with the second switch module, and the first pin and the tenth pin of the double-channel analog switch are electrically connected with the data output unit.
6. The signal switching circuit of claim 2, wherein the second switch module comprises a first four-channel analog switch;
the first pin and the ninth pin of the first four-channel analog switch are electrically connected with the first switch module, the seventh pin and the eighth pin of the first four-channel analog switch are electrically connected with the left sound channel unit, and the fifteenth pin and the sixteenth pin of the first four-channel analog switch are electrically connected with the right sound channel unit.
7. The signal switching circuit according to claim 4, wherein the third switching unit includes a second four-channel analog switch;
and a seventh pin of the second four-channel analog switch is electrically connected with the audio acquisition unit, and an eighth pin of the second four-channel analog switch is electrically connected with the call acquisition unit.
8. The signal switching circuit according to any one of claims 1 to 7, wherein the signal switching circuit further comprises a Bluetooth module;
the Bluetooth module is electrically connected with the second switch module;
the Bluetooth module is configured to receive a Bluetooth audio signal from the outside.
9. The signal switching circuit according to any of claims 1-7, wherein the signal switching circuit further comprises a power amplifier module;
the power amplifier module is electrically connected with the first switch module and the second switch module;
the power amplification module is configured to amplify the audio signal.
10. A bluetooth speaker, comprising the signal switching circuit of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123045293.XU CN216852326U (en) | 2021-12-02 | 2021-12-02 | Signal switching circuit and bluetooth speaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123045293.XU CN216852326U (en) | 2021-12-02 | 2021-12-02 | Signal switching circuit and bluetooth speaker |
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| CN216852326U true CN216852326U (en) | 2022-06-28 |
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