CN111093132A - Earphone adapter - Google Patents

Abstract

The application provides an earphone adapter, includes: the Bluetooth receiving and transmitting circuit is used for receiving signals transmitted in a Bluetooth communication frequency band and extracting audio signals in the signals; the earphone connecting interface is used for being connected with an audio plug of an earphone; the standard conversion circuit is connected with the Bluetooth transceiving circuit and the earphone connecting interface, converts the audio signal output by the Bluetooth transceiving circuit into an audio signal conforming to the standard of the earphone connecting interface, and transmits the audio signal to the earphone connecting interface; and the battery unit is connected with the Bluetooth transceiving circuit and the standard conversion circuit and used for supplying power to the Bluetooth transceiving circuit and the standard conversion circuit.

Description

Earphone adapter

Technical Field

The application relates to the technical field of electronic products, in particular to an earphone adapter.

Background

Currently, bluetooth headsets have appeared in the market that employ bluetooth technology to enable audio signals to be transmitted wirelessly to the headset speakers; because the Bluetooth headset adopts a wireless transmission mode, the Bluetooth headset has the advantages of being convenient for a user to carry and use. However, the existing bluetooth headset integrates the bluetooth component and the speaker component, so that the user can only purchase a new headset and cannot fully utilize the original wired headset.

Disclosure of Invention

The present application provides an earphone adapter to solve the problems mentioned in the background.

The application provides an earphone adapter, includes:

the Bluetooth receiving and transmitting circuit is used for receiving signals transmitted in a Bluetooth communication frequency band and extracting audio signals in the signals;

the earphone connecting interface is used for being connected with an audio plug of an earphone;

the standard conversion circuit is connected with the Bluetooth transceiving circuit and the earphone connecting interface, converts the audio signal output by the Bluetooth transceiving circuit into an audio signal conforming to the standard of the earphone connecting interface, and transmits the audio signal to the earphone connecting interface;

and the battery unit is connected with the Bluetooth transceiving circuit and the standard conversion circuit and used for supplying power to the Bluetooth transceiving circuit and the standard conversion circuit.

Optionally, the earphone connection interface includes an analog signal interface and/or a digital signal interface;

the standard conversion circuit comprises an analog standard conversion circuit and a digital standard conversion circuit;

the analog standard conversion circuit is connected with the Bluetooth transceiving circuit and the analog signal interface and is used for converting the audio signal output by the Bluetooth transceiving circuit into an analog audio signal conforming to the standard of the analog signal interface;

the digital standard conversion circuit is connected with the Bluetooth transceiving circuit and the digital signal interface and is used for converting the audio signal output by the Bluetooth transceiving circuit into a digital audio signal conforming to the digital signal interface standard;

the battery unit is connected with the digital signal interface.

Optionally, the number of the digital signal interfaces is multiple, and the interface types of the digital signal interfaces are different;

the digital standard conversion circuit comprises digital conversion sub-circuits respectively corresponding to different digital signal interfaces.

Optionally, the digital signal interface includes a Lighting standard interface and a TypeC interface.

Optionally, the battery unit comprises a rechargeable battery;

the earphone adapter further comprises:

and the charging control circuit is used for controlling the charging of the battery unit under the condition that the digital audio interface is connected with a power supply source.

Optionally, the analog signal interface is a coaxial audio interface.

Optionally, the headset adapter includes a detection control circuit, configured to control the standard conversion circuit to operate when it is detected that the bluetooth receiving circuit outputs an audio signal and the headset connection interface is connected to a headset.

Optionally, the earphone adapter interface includes a digital signal interface;

the detection control circuit is also used for verifying whether the earphone inserted into the digital audio interface is matched with the digital signal interface.

The earphone adapter converts the audio signal transmitted wirelessly into an audio signal conforming to the earphone connection interface standard by using the Bluetooth transceiving circuit and the standard conversion circuit; the wired earphone of the user can be inserted into the earphone connecting interface to receive the audio signal and generate sound; the user can realize the wireless transmission of audio signal without purchasing the Bluetooth headset under the condition of having the wired headset.

Drawings

Fig. 1 is an external view of a headphone adapter provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of an earphone adapter provided in an embodiment of the present application;

wherein: 11-a Bluetooth transceiver circuit, 12-an earphone connecting interface, 121-an analog signal interface, 122-a digital signal interface, 13-a standard conversion circuit, 131-an analog standard conversion circuit, 132-a digital standard conversion circuit, 14-a battery unit and 15-a detection control circuit; 16-charge control circuit, 17-housing.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.

Fig. 1 is an external view of an earphone adapter provided in an embodiment of the present application. As shown in fig. 1, the earphone adapter provided in the embodiment of the present application includes a housing 17 and an earphone connection interface 12 disposed on a surface of the housing 17, as viewed from an outside.

Fig. 2 is a schematic structural diagram of an earphone adapter provided in an embodiment of the present application. As shown in fig. 2, the earphone adapter provided in the embodiment of the present application further includes a bluetooth transceiver circuit 11, a standard conversion circuit 13, and a battery unit 14.

The bluetooth transceiver circuit 11 is configured to receive a signal transmitted in a bluetooth communication frequency band, extract an audio signal in the signal, and send the audio signal to the standard conversion circuit 13.

The standard conversion circuit 13 is connected to the bluetooth transceiver circuit 11, and is configured to convert the audio signal output by the bluetooth transceiver circuit 11 into an audio signal conforming to the standard of the earphone connection interface 12, and transmit the corresponding audio signal to the earphone connection interface 12.

The earphone connection interface 12 is used for connection with an audio plug of an earphone.

The battery unit 14 is connected to both the bluetooth transceiver circuit 11 and the standard conversion circuit 13, and is used for supplying power to the bluetooth transceiver circuit 11 and the standard conversion circuit 13.

It is conceivable that, with the earphone adapter provided in the embodiment of the present application, the bluetooth transceiver circuit 11 and the standard conversion circuit 13 therein may be utilized to convert the wirelessly transmitted audio signal into an audio signal conforming to the standard of the earphone connection interface 12; the wired earphone of the user can be inserted into the earphone connection interface 12 to receive the audio signal and generate sound.

Referring to fig. 2, in the earphone adapter provided in the embodiment of the present application, the earphone connection interface 12 includes an analog signal interface 121 and a digital signal interface 122. Correspondingly, the standard conversion circuit 13 includes an analog standard conversion circuit 131 and a digital standard conversion circuit 132.

Specifically, the method comprises the following steps: the analog standard conversion circuit 131 is connected with the bluetooth transceiver circuit 11 and the analog signal interface 121, converts the audio signal output by the bluetooth transceiver circuit 11 into an analog audio signal conforming to the standard of the analog signal interface 121, and transmits the analog audio signal to the analog signal interface 121; the digital standard conversion circuit 132 is connected to the bluetooth transceiver circuit 11 and the digital signal interface 122, converts the audio signal output by the bluetooth transceiver circuit 11 into a digital audio signal conforming to the standard of the digital signal interface 122, and sends the digital audio signal to the digital signal interface 122; correspondingly, in order to make the processing chip in the earphone connected to the digital signal interface 122 convert the digital audio signal into an analog signal again, the battery unit 14 is also connected to the digital signal interface 122 to supply power to the earphone connected to the digital signal interface 122.

In the earphone adapter provided by the embodiment of the present application, the number of the digital signal interfaces 122 is multiple, and the interface type of each digital signal interface 122 is different. Correspondingly, the aforementioned digital standard conversion circuit 132 includes digital conversion sub-circuits respectively corresponding to different digital signal interfaces 122.

Of course, in other embodiments of the present application, the earphone connection interface 12 in the earphone converter may also include only one of the analog digital signal interface 122 and the digital signal interface 122; correspondingly, the standard conversion circuit 13 only includes the analog standard conversion circuit 131 or the digital standard conversion circuit 132.

As can be seen from the foregoing description, the headset adapter provided in the embodiments of the present application is capable of connecting digital headsets of different interface types. In specific application, because most of the digital earphones applied in the current industry standard are the Lighting interface earphones matched with the iOS system or the TypeC interface earphones matched with the Android system, the digital signal interface 122 may be set to be the Lighting interface and the TypeC interface.

Of course, in other embodiments, the interface type of the digital signal interface 122 may also be one or more other numbers, and the number of the digital signal interface 122 is not limited to the Lighting connector or the TypeC connector, but may also be other types of connectors.

Referring to fig. 2, in the embodiment of the present application, in the earphone adapter provided in the embodiment of the present application, the battery unit 14 is a rechargeable battery, and a battery with high energy density, such as a lithium battery, is preferably used. In order to charge the battery unit 14, the earphone adapter further includes a charging control circuit 16, and the charging control circuit 16 is connected to the digital audio interface and controls the battery unit 14 to be charged when the digital audio interface is connected to a power supply. In other embodiments, battery unit 14 may also be a replaceable disposable battery, or a removable rechargeable battery; alternatively, the headset adapter also includes an interface that specifically charges the battery unit 14.

In the embodiment of the present application, the analog signal interface 121 of the earphone adapter is a coaxial audio jack; in particular reference, the coaxial audio jack is preferably a 3.5mm size coaxial audio jack. In other embodiments, the analog signal interface 121 may also be other types of audio plugs, and the application is not limited thereto.

With continued reference to fig. 2, the earphone adapter provided in the embodiment of the present application may further include a detection control circuit 15; the detection control circuit 15 is used for detecting whether the bluetooth receiving circuit 11 outputs an audio signal, detecting whether the earphone connecting interface 12 is connected with an earphone, and controlling the standard conversion circuit 13 to work to convert the audio signal output by the bluetooth receiving circuit 11 into a signal corresponding to the standard of the earphone connecting interface 12 under the condition that the bluetooth receiving circuit 11 outputs the audio signal and the earphone connecting interface 12 is connected with the earphone.

In practical application, the standard conversion circuit 13 of the earphone adapter works only when the bluetooth receiving circuit 11 outputs an audio signal and the earphone connecting interface 12 is connected with a corresponding earphone; because the earphone adapter is provided with the battery unit 14 to supply power to the standard conversion circuit 13, in order to improve the effective utilization rate of the electric quantity in the battery unit 14, the detection control circuit 15 is used for detecting whether the bluetooth receiving circuit 11 works and whether the earphone connecting interface 12 is inserted into an earphone, and then controlling whether the standard conversion circuit 13 works, so that the waste of the electric quantity of the battery unit 1415 can be avoided, and the service time of the battery unit 14 is prolonged.

With continued reference to fig. 2, in the earphone adapter provided in the embodiment of the present application, the detection control circuit 15 is further configured to verify whether the earphone inserted into the earphone audio interface 12 is matched with the earphone adapter; in some instances, while there are components plugged into the headphone audio interface 12, the foregoing components are not headphones in fact, or they require authentication of the security of the headphone adapter to function.

For example, in some applications, although the inserted component has an interface matching the headphone audio interface 12, the aforementioned interface may be an interface for data transmission, and the headphone adapter may not be an interface for data transmission, in which case the detection control circuit 15 controls the standard conversion circuit 13 to operate by verifying whether the component inserted into the digital audio interface is a headphone or not, that is, whether the component is authenticated or not.

For another example, in some other applications, the earphone is an application-specific earphone, and only the authenticated other component can be matched with the earphone, the detection control circuit 15 can be used to send authentication information to the earphone to confirm that the earphone adapter is authenticated and can be matched with the earphone.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features may be interchanged with other features disclosed in this application, but not limited to those having similar functions.

Claims (8)

1. An earphone adapter, comprising:

the Bluetooth receiving and transmitting circuit is used for receiving signals transmitted in a Bluetooth communication frequency band and extracting audio signals in the signals;

the earphone connecting interface is used for being connected with an audio plug of an earphone;

the standard conversion circuit is connected with the Bluetooth transceiving circuit and the earphone connecting interface, converts the audio signal output by the Bluetooth transceiving circuit into an audio signal conforming to the standard of the earphone connecting interface, and transmits the audio signal to the earphone connecting interface;

and the battery unit is connected with the Bluetooth transceiving circuit and the standard conversion circuit and used for supplying power to the Bluetooth transceiving circuit and the standard conversion circuit.

2. The headset adapter of claim 1, wherein:

the earphone connecting interface comprises an analog signal interface and/or a digital signal interface;

the standard conversion circuit comprises an analog standard conversion circuit and a digital standard conversion circuit;

the analog standard conversion circuit is connected with the Bluetooth transceiving circuit and the analog signal interface and is used for converting the audio signal output by the Bluetooth transceiving circuit into an analog audio signal conforming to the standard of the analog signal interface;

the digital standard conversion circuit is connected with the Bluetooth transceiving circuit and the digital signal interface and is used for converting the audio signal output by the Bluetooth transceiving circuit into a digital audio signal conforming to the digital signal interface standard;

the battery unit is connected with the digital signal interface.

3. The headset adapter of claim 2, wherein:

the number of the digital signal interfaces is multiple, and the interface types of the digital signal interfaces are different;

the digital standard conversion circuit comprises digital conversion sub-circuits respectively corresponding to different digital signal interfaces.

4. The headset adapter of claim 3, wherein:

the digital signal interface comprises a Lighting standard interface and a TypeC interface.

5. The headset adapter of claim 2, wherein:

the battery unit includes a rechargeable battery;

the earphone adapter further comprises:

and the charging control circuit is used for controlling the charging of the battery unit under the condition that the digital audio interface is connected with a power supply source.

6. The headset adapter of claim 2, wherein:

the analog signal interface is a coaxial audio interface.

7. The headset adapter of any of claims 1-6, comprising:

and the detection control circuit is used for controlling the standard conversion circuit to work under the condition that the Bluetooth receiving circuit is detected to output an audio signal and the earphone connecting interface is connected with an earphone.

8. The headset adapter of claim 7, wherein:

the earphone adapter interface comprises a digital signal interface;

the detection control circuit is also used for verifying whether the earphone inserted into the digital audio interface is matched with the digital signal interface.

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