CN115442706A - External audio device and method for operating external audio device - Google Patents
External audio device and method for operating external audio device Download PDFInfo
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- CN115442706A CN115442706A CN202110612807.0A CN202110612807A CN115442706A CN 115442706 A CN115442706 A CN 115442706A CN 202110612807 A CN202110612807 A CN 202110612807A CN 115442706 A CN115442706 A CN 115442706A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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Abstract
The present disclosure relates to an external audio device and a method of operating the external audio device. The external audio device comprises a universal serial bus plug, an audio socket, a universal serial bus communication circuit, an audio socket detection circuit, a first power circuit, a second power circuit and a control circuit. The USB communication circuit establishes a connection with a computer device coupled to the USB plug according to a USB communication standard. The audio socket detection circuit detects the insertion state of the audio socket. The first power circuit generates a second power to the USB communication circuit according to the first power received by the USB plug, and the second power circuit generates a third power to the audio socket detection circuit according to the first power. The control circuit enables or disables the first power supply circuit depending on the insertion state of the audio jack.
Description
Technical Field
The present invention relates to an external audio device, and more particularly, to an external audio device capable of adjusting power consumption according to an insertion state of an audio jack.
Background
In order to simplify the mechanism of the electronic device and make the design of the electronic device more flexible, manufacturers of the electronic device often try to reduce the external connection holes on the electronic device. For example, a usb interface is often used as a charging power interface for a mobile device, and the same usb interface can be used as an external earphone or an external microphone interface for the mobile device.
Since the conventional earphones in the market are still large with 3.5 mm audio plugs, the user must connect the earphone with 3.5 mm audio plugs to the usb interface of the mobile device through the audio adapter. In this case, the audio adapter needs to convert audio files with different formats, and the mobile device provides the required power to the audio adapter through the usb interface. In the prior art, when the audio adapter is plugged into the usb interface of the mobile device, the mobile device continuously provides power to the audio adapter to maintain communication between the audio adapter and the mobile device even though the earphone is not plugged into the earphone hole of the audio adapter. Therefore, the mobile device may consume excessive power unnecessarily and cause inconvenience to the user.
Disclosure of Invention
An embodiment of the present invention provides an external audio device, which includes a usb plug, an audio socket, a usb communication circuit, an audio socket detection circuit, a first power circuit, a second power circuit, and a control circuit.
The universal serial bus plug is used for being coupled with the computer device. The audio socket is used for being coupled with an earphone or a microphone. The USB communication circuit is used for establishing connection with a computer device according to a USB communication standard.
The audio socket detection circuit is used for detecting the insertion state of the audio socket. The first power circuit is used for generating a second power to the universal serial bus communication circuit according to the first power received by the universal serial bus plug. The second power circuit is used for generating a third power to the audio socket detection circuit according to the first power.
The control circuit enables or disables the first power supply circuit depending on the insertion state of the audio jack.
Another embodiment of the present invention provides a method for operating an external audio device, the external audio device comprising a usb plug, an audio jack, a usb communication circuit, an audio jack detection circuit, a first power circuit, a second power circuit, and a control circuit.
The method for operating the external audio device comprises the steps that the first power supply circuit generates a second power supply to the universal serial bus communication circuit according to a first power supply received by the universal serial bus plug, the second power supply circuit generates a third power supply to the audio socket detection circuit according to the first power supply, the audio socket detection circuit detects the insertion state of the audio socket, and the control circuit enables or disables the first power supply circuit according to the insertion state of the audio socket.
Drawings
Fig. 1 is a schematic diagram of an external audio device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an external audio device according to another embodiment of the present invention.
Fig. 3 is a flowchart of a method of operating an external audio device according to an embodiment of the invention.
Detailed Description
Fig. 1 is a schematic diagram of an external audio device 100 according to an embodiment of the present invention. The external audio device 100 includes a Universal Serial Bus (USB) plug 110, an audio socket 120, a USB communication circuit 130, an audio socket detection circuit 140, a first power circuit 150, a second power circuit 160, and a control circuit 170.
In some embodiments, the usb plug 110 may be coupled to a computer device C1, and the computer device C1 may be, for example, but not limited to, a mobile phone, a tablet computer, and a notebook computer. The universal serial bus plug 110 may be, for example and without limitation, a type-C plug as specified by the universal serial bus.
The audio jack 120 may be coupled to a headphone or microphone, and the audio jack 120 may be, for example, but not limited to, a 3.5 millimeter audio jack. That is, the computer device C1 can utilize an earphone or a microphone with a 3.5 mm audio plug as an external device for audio output or input through the external audio device 100.
The usb communication circuit 130 may establish a connection with the computer device C1 according to a usb communication standard, and in some embodiments, after the usb communication circuit 130 establishes a connection with the computer device C1, the computer device C1 may recognize the external audio device 100 and may control the usb communication circuit 130 according to a Human Interface Device (HID) standard defined by the usb.
In some embodiments, the external audio device 100 is powered by the computer device C1. For example, the computer device C1 can transmit the first power V1 to the external audio device 100 through the usb plug 110, and the first power circuit 150 can generate the second power V2 according to the first power V1 received by the usb plug 110 for the usb communication circuit 130.
In addition, the audio jack detection circuit 140 may detect the insertion state of the audio jack 120, that is, the audio jack detection circuit 140 may determine whether the audio jack 120 is in the inserted state or the non-inserted state. In some embodiments, the second power circuit 160 can generate the third power V3 according to the first power V1 for the audio socket detection circuit 140.
In some embodiments, in order to avoid unnecessary waste of power of the computer device C1 by the usb communication circuit 130 to keep connected to the computer device C1 when the audio jack 120 is not coupled to a device such as a headset or a microphone, the control circuit 170 may enable or disable the first power circuit 150 according to the plugging status of the audio jack 120.
For example, when the external audio device 100 is turned from the unpowered state to be able to receive the first power source V1 through the usb plug 110, the control circuit 170 may first enable the first power circuit 150 and the second power circuit 160. At this time, the external audio device 100 can establish a connection with the computer device C1 through the usb communication circuit 130, and can detect the insertion state of the audio jack 120 through the audio jack detection circuit 140.
Then, if the audio jack detection circuit 140 detects that the audio jack 120 is not plugged, it indicates that the user is not ready to use the external earphone or microphone as the input or output device of the computer device C1. At this time, the control circuit 170 disables the first power circuit 150 to disconnect the connection with the computer device C1, thereby achieving the effect of saving power.
However, when the audio jack detecting circuit 140 detects that the audio jack 120 is plugged, the control circuit 170 will continuously or re-enable the first power circuit 150 to continuously or re-establish the connection with the computer device C1 through the usb communication circuit 130.
In addition, to ensure that the audio jack detection circuit 140 can detect the plugged-in state of the audio jack 120 in real time, the control circuit 170 may keep enabling the second power circuit 160 regardless of whether the audio jack detection circuit 140 detects the unplugged state or the plugged-in state of the audio jack 120.
In fig. 1, the external audio device 100 may further include an audio conversion circuit 180. The audio conversion circuit 180 can convert the digital audio signal transmitted from the computer device C1 into an analog audio signal, and can also convert the analog audio signal transmitted from the microphone into a digital audio signal. In this case, the first power circuit 150 may also generate a fourth power V4 required by the audio conversion circuit 180. Since the audio conversion circuit 180 and the usb communication circuit 130 are mainly operated when the audio jack 120 is plugged, and can stop operating when the audio jack 120 is not plugged, the first power circuit 150 can be used to supply power and controlled by the control circuit 170.
Although the first power circuit 150 and the second power circuit 160 are shown as two independent functional blocks in the embodiment of fig. 1, in some embodiments, the first power circuit 150 and the second power circuit 160 may share part of the circuits, and the first power circuit 150 and the second power circuit 160 may each include a plurality of voltage stabilizing and/or transforming circuits according to the requirements of the system.
Fig. 2 is a schematic diagram of an external audio device 200 according to an embodiment of the present invention. The external audio device 200 and the external audio device 100 may have similar structures and operate according to similar principles, however, the external audio device 200 may include audio sockets 220A and 220B. In some embodiments, the audio jack 220A may be used to couple with a headset and the audio jack 220B may be used to couple with a microphone, but the invention is not limited thereto, and in some other embodiments, both the audio jacks 220A and 220B may be coupled with a headset or a microphone.
In the external audio device 200, the audio jack detection circuit 240 may detect the insertion states of the audio jacks 220A and 220B, and the control circuit 270 may enable or disable the first power circuit 250 according to the insertion states of the audio jacks 220A and 220B. For example, when the audio jack detection circuit 240 detects that the audio jack 220A and/or the audio jack 220B is plugged in, the control circuit 270 may enable the first power circuit 250, and the usb communication circuit 230 and the audio conversion circuit 280 may operate normally. When the audio jack detection circuit 240 detects that the audio jacks 220A and 220B are not plugged, the control circuit 270 disables the first power circuit 250, and the usb communication circuit 230 and the audio conversion circuit 280 stop operating.
In addition, to ensure that the audio jack detection circuit 240 can detect the insertion status of the audio jacks 220A and 220B in real time, the control circuit 270 may keep enabling the second power circuit 260.
Fig. 3 is a method 300 of operating the external audio device 100 according to one embodiment of the invention. The method 300 may include steps S310 to S360.
S310: when the external audio device 100 receives the power provided by the computer device C1 through the usb plug 110, the control circuit 170 activates the first power circuit 150 and the second power circuit 160;
s320: the first power circuit 150 generates a second power V2 to the usb communication circuit 130 according to the first power V1 received by the usb plug 110;
s330: the first power circuit 150 generates a fourth power V4 to the audio conversion circuit 180 according to the first power V1;
s340: the second power circuit 160 generates a third power V3 to the audio socket detection circuit 140 according to the first power V1;
s350: the audio jack detection circuit 140 detects the insertion state of the audio jack 120;
s360: the control circuit 170 enables or disables the first power supply circuit 150 according to the insertion state of the audio jack 120.
In step S310, when the external audio device 100 is turned from the unpowered state to be able to receive the first power V1 through the usb plug 110, the control circuit 170 may first enable the first power circuit 150 and the second power circuit 160. Then, the first power circuit 150 can generate a second power V2 and a fourth power V4 to the usb communication circuit 130 and the audio conversion circuit 180 according to the first power V1 in steps S320 and S330, respectively, and the second power circuit 160 can generate a third power V3 to the audio jack detection circuit 140 according to the first power V1 in step S340.
Next, the audio jack detection circuit 140 detects the insertion state of the audio jack 120 in step S350, and the control circuit 170 enables or disables the first power circuit 150 according to the insertion state of the audio jack 120 in step S360.
For example, when the audio jack detection circuit 140 detects that the audio jack 120 is plugged, the control circuit 170 may enable the first power circuit 150 to enable the usb communication circuit 140 to establish a connection with the computer device C1. When the audio jack detection circuit 140 detects that the audio jack 120 is not plugged, the control circuit 170 may disable the first power circuit 150 to disconnect the connection.
Thus, when the audio jack 120 is not coupled to a device such as an earphone or a microphone, the power supply to the usb communication circuit 130 and the audio conversion circuit 180 is stopped, so that the power consumption of the computer device C1 can be reduced.
In some embodiments, the method 300 may also be applied to the external audio device 200. In this case, the audio jack detection circuit 240 detects the insertion states of the audio jacks 220A and 220B in step S350, and the control circuit 270 enables or disables the first power circuit 250 according to the insertion states of the audio jacks 220A and 220B. For example, when the audio jack detection circuit 240 detects that the audio jack 220A and/or the audio jack 220B is plugged in, the control circuit 270 may enable the first power circuit 250, and the usb communication circuit 230 and the audio conversion circuit 280 may operate normally. When the audio jack detection circuit 240 detects that the audio jacks 220A and 220B are not plugged, the control circuit 270 disables the first power circuit 250, and the usb communication circuit 270 and the audio conversion circuit 280 stop operating.
In addition, to ensure that the audio jack detection circuit 240 can detect the insertion status of the audio jacks 220A and 220B in real time, the control circuit 270 may keep enabling the second power circuit 260.
Thus, when neither of the audio jacks 220A and 220B is coupled to a device such as an earphone or a microphone, the power supply to the usb communication circuit 230 and the audio conversion circuit 280 is stopped, so that the power consumption of the computer device C1 can be reduced.
In summary, the external audio device and the method for operating the external audio device provided by the embodiments of the present invention can control the internal power circuit according to the insertion state of the audio socket, so as to reduce unnecessary power consumption. For example, when the audio jack is plugged, the control circuit can activate the power circuits of the usb communication circuit and the audio conversion circuit to enable the usb communication circuit and the audio conversion circuit to operate normally. When the audio socket is not inserted, the control circuit can disable the power supply circuits of the universal serial bus communication circuit and the audio conversion circuit so as to reduce the electric energy loss of the computer device.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Description of the symbols
100. 200 external audio device
110 universal serial bus plug
120. 220A, 220B audio socket
130. 230 universal serial bus communication circuit
140. 240 audio socket detection circuit
150. 250 first power supply circuit
160. 260 second power supply circuit
170. 270 control circuit
180. 280 audio conversion circuit
V1, V2, V3, V4 power supply
C1 computer device
300 method
S310 to S360
Claims (10)
1. An external audio device, comprising:
a universal serial bus plug for coupling with a computer device;
a first audio jack for coupling with an earphone or a microphone;
a universal serial bus communication circuit for establishing connection with the computer device according to a universal serial bus communication standard;
the audio socket detection circuit is used for detecting the insertion state of the first audio socket;
a first power circuit for generating a second power to the USB communication circuit according to the first power received by the USB plug;
a second power circuit for generating a third power to the audio jack detection circuit according to the first power; and
a control circuit for enabling or disabling the first power circuit based at least on the insertion status of the first audio jack.
2. The external audio device of claim 1, wherein:
when the external audio device receives the first power supply through the universal serial bus plug, the control circuit starts the first power supply circuit and the second power supply circuit.
3. The external audio device of claim 1 or 2, wherein:
when the audio socket detection circuit detects that the first audio socket is in the inserted state, the control circuit enables the first power supply circuit to enable the universal serial bus communication circuit to establish the connection with the computer device; and
when the audio socket detection circuit detects that the first audio socket is not plugged, the control circuit disables the first power circuit to cut off the connection.
4. The external audio device of claim 3, wherein:
when the audio socket detection circuit detects that the first audio socket is in the unplugged state or the plugged-in state, the control circuit keeps enabling the second power circuit.
5. The external audio device of claim 1, further comprising:
the audio conversion circuit is used for converting digital audio signals transmitted from the computer device into analog audio signals and converting the analog audio signals transmitted from the microphone into digital audio signals;
wherein the first power circuit is further used for generating a fourth power to the audio conversion circuit.
6. The external audio device of claim 1, wherein:
the universal serial bus plug is a type-C plug specified by a universal serial bus.
7. The external audio device of claim 1, further comprising:
a second audio jack for coupling with an earphone or a microphone;
wherein:
the audio socket detection circuit is further used for detecting the insertion state of the second audio socket; and
the control circuit enables or disables the first power circuit according to the insertion state of the first audio jack and the insertion state of the second audio jack.
8. The external audio device of claim 7, wherein:
when the audio socket detection circuit detects that the first audio socket and/or the second audio socket are/is in a plugged-in state, the control circuit enables the first power supply circuit; and
when the audio socket detection circuit detects that the first audio socket and the second audio socket are not plugged in, the control circuit disables the first power circuit.
9. A method for operating an external audio device, the external audio device comprising a USB plug, a first audio jack, a USB communication circuit, an audio jack detection circuit, a first power circuit, a second power circuit, and a control circuit, the method comprising:
the first power supply circuit generates a second power supply to the universal serial bus communication circuit according to the first power supply received by the universal serial bus plug;
the second power supply circuit generates a third power supply to the audio socket detection circuit according to the first power supply;
the audio socket detection circuit detects the insertion state of the first audio socket; and
the control circuit enables or disables the first power supply circuit based at least on the insertion status of the first audio jack.
10. The method of claim 9, further comprising:
when the external audio device receives the power supply provided by the computer device through the universal serial bus plug, the control circuit starts the first power supply circuit and the second power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110612807.0A CN115442706A (en) | 2021-06-02 | 2021-06-02 | External audio device and method for operating external audio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110612807.0A CN115442706A (en) | 2021-06-02 | 2021-06-02 | External audio device and method for operating external audio device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115442706A true CN115442706A (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110612807.0A Pending CN115442706A (en) | 2021-06-02 | 2021-06-02 | External audio device and method for operating external audio device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115442706A (en) |
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2021
- 2021-06-02 CN CN202110612807.0A patent/CN115442706A/en active Pending
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