CN212486763U - Earphone box-entering detection circuit and TWS earphone - Google Patents
Earphone box-entering detection circuit and TWS earphone Download PDFInfo
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- CN212486763U CN212486763U CN202021624318.4U CN202021624318U CN212486763U CN 212486763 U CN212486763 U CN 212486763U CN 202021624318 U CN202021624318 U CN 202021624318U CN 212486763 U CN212486763 U CN 212486763U
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Abstract
The utility model discloses a box detection circuitry and TWS earphone are gone into to earphone. The earphone goes into box detection circuitry is including setting up electric quantity detecting element and the first contact in the box that charges, set up power supply unit in the earphone, go into box detecting element and second contact, wherein: the first end of the electric quantity detection unit is connected with the first power supply, and the second end of the electric quantity detection unit is connected with the first contact; the first end of the power supply unit is respectively connected with the first end of the box-in detection unit and the second contact; the first end of the box entering detection unit is connected with the second contact; the power supply unit outputs a first voltage to the box entering detection unit, when the first contact is in contact with the second contact and the electric quantity detection unit detects that the electric quantity of the first power supply is exhausted, the electric quantity detection unit is grounded, and the box entering detection unit judges that the earphone enters the box when detecting that the first voltage is reduced. When the battery power of the charging box is exhausted, the earphone end can detect whether the earphone is plugged into the box according to whether the received voltage is reduced, and the use scene of the earphone plugging detection is improved.
Description
Technical Field
The utility model relates to a wireless headset technical field especially relates to a box detection circuitry and TWS earphone are gone into to earphone.
Background
With the development of real bluetooth Wireless (TWS) products, more and more TWS headsets are available in the market, and the TWS headsets generally comprise a charging box and a headset, wherein after the headset is placed in the charging box, the charging box realizes charging and communication of the headset.
At present, a plurality of detection modes for the earphone to enter the box are provided, for example, a detection circuit is arranged in the charging box, and the box entering state is judged by a microcontroller in the charging box and a Bluetooth chip in the earphone according to data sent by the detection circuit. When the electric quantity of the battery in the charging box is exhausted, the detection circuit and the microcontroller cannot be supplied with power, the detection circuit fails, and the earphone-in-box detection cannot be performed.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide a box detection circuitry and TWS earphone are gone into to earphone aims at solving among the prior art and can't carry out the earphone when the box inner electric quantity that charges exhausts and go into the technical problem that the box detected.
In order to achieve the above object, the utility model provides a box detection circuitry is gone into to earphone, earphone go into box detection circuitry including setting up electric quantity detecting element and the first contact in the box that charges, set up in the earphone power supply unit, go into box detecting element and second contact, wherein:
the first end of the electric quantity detection unit is connected with the first power supply, and the second end of the electric quantity detection unit is connected with the first contact;
the first end of the power supply unit is respectively connected with the first end of the box-in detection unit and the second contact;
the first end of the box entering detection unit is connected with the second contact;
the power supply unit is used for outputting a first voltage to the box entering detection unit and is grounded through the electric quantity detection unit when the first contact is in contact with the second contact and the electric quantity detection unit detects that the electric quantity of the first power supply is exhausted;
and the in-box detection unit is used for receiving the first voltage and judging that the earphone is in the box when detecting that the first voltage is reduced.
Preferably, the electric quantity detecting unit includes a first resistor, a second resistor, a third resistor and a MOS transistor, wherein:
the first end of the first resistor is the first end of the electric quantity detection unit, and the second end of the first resistor is respectively connected with the first end of the second resistor and the grid electrode of the MOS tube;
the source electrode of the MOS tube is connected with the first end of the third resistor, and the drain electrode of the MOS tube and the second end of the second resistor are grounded;
the second end of the third resistor is the second end of the electric quantity detection unit.
Preferably, the power supply unit includes a fourth resistor, wherein:
the first end of the fourth resistor is connected with the second power supply, and the second end is the first end of the power supply unit.
Preferably, the power supply unit further includes a fifth resistor, wherein:
the first end of the fifth resistor is connected with the second end of the fourth resistor, and the second end of the fifth resistor is connected with the first end of the box-entering detection unit.
Preferably, the in-box detection unit comprises a bluetooth chip, wherein:
the input/output pin of the Bluetooth chip is the first end of the box-in detection unit.
Preferably, the earphone-in-box detection circuit further comprises a communication control unit arranged in the charging box, wherein:
the communication end of the communication control unit is respectively connected with the second end of the electric quantity detection unit and the first contact;
the second contact is connected with the second end of the in-box detection unit.
Preferably, the communication control unit comprises a microcontroller, wherein:
and a communication pin of the microcontroller is a communication end of the communication control unit.
Preferably, the electric quantity detecting unit includes a first resistor, a second resistor, a third resistor and a MOS transistor, wherein:
the first end of the first resistor is the first end of the electric quantity detection unit, and the second end of the first resistor is respectively connected with the first end of the second resistor and the grid electrode of the MOS tube;
the source electrode of the MOS tube is connected with the first end of the third resistor, and the drain electrode of the MOS tube and the second end of the second resistor are grounded;
the second end of the third resistor is the second end of the electric quantity detection unit.
Preferably, the in-box detection unit comprises a bluetooth chip, wherein:
and a communication pin of the Bluetooth chip is a second end of the box-in detection unit.
The utility model discloses still provide a TWS earphone, TWS earphone includes that above earphone goes into box detection circuitry.
The utility model discloses a detection circuit for the earphone box-in comprises an electric quantity detection unit and a first contact which are arranged in a charging box, and a power supply unit, a box-in detection unit and a second contact which are arranged in the earphone; the first end of the electric quantity detection unit is connected with the first power supply, the second end of the electric quantity detection unit is connected with the first contact, the first end of the power supply unit is respectively connected with the first end of the box entering detection unit and the second contact, and the first end of the box entering detection unit is connected with the second contact. The power supply unit outputs a first voltage to the box entering detection unit, when the first contact is in contact with the second contact and the electric quantity detection unit detects that the electric quantity of the first power supply is exhausted, the electric quantity detection unit is grounded, and the box entering detection unit judges that the earphone enters the box when detecting that the first voltage is reduced. Wherein, because the earphone just contacts with the second contact when going into the box to when the battery power of the box that charges exhausts, power detecting element could just with the electrical unit ground connection, and then draw down electrical unit output to the voltage of going into box detecting element, consequently, when the battery power of the box that charges exhausts, whether the earphone end reduces according to the voltage that receives and can detect out the earphone and go into the box, perfect the use scene that the box detected was gone into to the earphone, promoted user and used experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block diagram of an embodiment of a headset in-box detection circuit of the present invention;
FIG. 2 is a schematic diagram of an alternative configuration of the headset in-box detection circuit of FIG. 1;
fig. 3 is a schematic diagram of an alternative configuration of the headset in-box detection circuit of fig. 1.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a box detection circuitry is gone into to earphone.
Referring to fig. 1, in an embodiment, the headset in-box detection circuit includes a power detection unit 110 and a first contact P1 disposed in the charging box 10, a power supply unit 210, an in-box detection unit 220, and a second contact P2 disposed in the headset 20, wherein:
the first terminal of the power detection unit 110 is connected to the first power supply VDD, and the second terminal is connected to the first contact point P1;
a first end of the power supply unit 210 is connected to a first end of the in-box detection unit 220 and the second contact P2, respectively;
a first end of the in-cassette detecting unit 220 is connected to the second contact point P2;
the power supply unit 210 is configured to output a first voltage to the cartridge entry detecting unit 220, and when the first contact P1 contacts the second contact P2 and the power detecting unit 110 detects that the power of the first power supply VDD is exhausted, the power detecting unit 110 is grounded; and a casing detection unit 220 for receiving the first voltage and determining that the earphone is in the casing when detecting that the first voltage is reduced.
It should be understood that in the conventional earphone in-box detection, the charging box usually receives the data of the detection circuit through the microcontroller to determine whether the earphone is in the box, and the earphone end usually receives the data of the detection circuit and determines whether the earphone is in the box. When the battery power of the charging box is exhausted, a power supply cannot be provided for the microcontroller and the detection circuit, the microcontroller cannot enter the box for detection, the detection circuit cannot send data to the earphone end, and then the earphone end cannot enter the box for detection, so that the use experience of a user is seriously influenced. According to the earphone, the power detection unit 110 and the first contact P1 are arranged in the charging box 10, the power supply unit 210, the box entering detection unit 220 and the second contact P2 are arranged in the earphone 20, when the power is exhausted and the first contact P1 is in contact with the second contact P2, the power detection unit 110 grounds partial voltage output by the power supply unit 210, the voltage output by the power supply unit 210 to the box entering detection unit 220 is reduced, and the box entering detection unit 220 can determine whether the earphone 20 enters the box or not by detecting whether the received voltage is reduced or not.
It should be noted that the earphone 20 includes a left earphone and a right earphone, the power supply unit 210, the in-box detection unit 220, and the second contact P2 may be disposed in the left earphone or the right earphone, or the power supply unit 210, the in-box detection unit 220, and the second contact P2 may be disposed in both the left earphone and the right earphone, which is not limited in this embodiment. When the power supply unit 210, the in-box detection unit 220, and the second contact P2 are disposed in both the left and right earphones, two power detection units 110 and a first contact P1 are disposed in the charging box 10.
In a specific implementation, the first power supply VDD is a power supply provided by a battery in the charging box 10, such as a power supply of the microcontroller MCU, which is not limited in this embodiment. When the first power supply VDD is a power supply of the microcontroller MCU, the voltage of the first power supply VDD is typically 3V.
The first contact P1 may be a communication contact in the charging box 10 or an empty contact, and the second contact P2 may be a communication contact in the earphone 20 or an empty contact, which is not limited in this embodiment. The first contact P1 is in contact with the second contact P2 when the headset 20 is placed in the charging box 10, and the first contact P1 is not in contact with the second contact P2 when the headset 20 is not placed in the charging box 10.
The first voltage refers to a voltage output from the power unit 210 to the in-box detection unit 220, when the first contact P1 and the second contact P2 are not in contact, the power unit 210 only outputs the voltage to the in-box detection unit 220, and when the first contact P1 and the second contact P2 are in contact and the power detection unit 110 is turned on, the power unit 210 needs to output the voltage to the in-box detection unit 220 and the power detection unit 110. Thus, the first voltage outputted from the power unit 210 to the in-box detection unit 220 is pulled down, and the in-box detection unit 220 at the end of the earphone 20 detects that the first voltage is pulled down, so that it can be determined that the earphone 20 is in the box, and the charging box 10 is not powered.
In the embodiment, the earphone in-box detection circuit comprises an electric quantity detection unit and a first contact which are arranged in the charging box, and a power supply unit, an in-box detection unit and a second contact which are arranged in the earphone; the first end of the electric quantity detection unit is connected with the first power supply, the second end of the electric quantity detection unit is connected with the first contact, the first end of the power supply unit is respectively connected with the first end of the box entering detection unit and the second contact, and the first end of the box entering detection unit is connected with the second contact. The power supply unit outputs a first voltage to the box entering detection unit, when the first contact is in contact with the second contact and the electric quantity detection unit detects that the electric quantity of the first power supply is exhausted, the electric quantity detection unit is grounded, and the box entering detection unit judges that the earphone enters the box when detecting that the first voltage is reduced. Wherein, because the earphone just contacts with the second contact when going into the box to when the battery power of the box that charges exhausts, power detecting element could just with the electrical unit ground connection, and then draw down electrical unit output to the voltage of going into box detecting element, consequently, when the battery power of the box that charges exhausts, whether the earphone end reduces according to the voltage that receives and can detect out the earphone and go into the box, perfect the use scene that the box detected was gone into to the earphone, promoted user and used experience.
Referring to fig. 2, fig. 2 is a schematic diagram of an alternative structure of the earphone insertion detection circuit of fig. 1.
In this embodiment, the electric quantity detecting unit 110 includes a first resistor R1, a second resistor R2, a third resistor R3, and a MOS transistor Q1, wherein:
a first end of the first resistor R1 is a first end of the electric quantity detecting unit 110, and a second end thereof is respectively connected to a first end of the second resistor R2 and a gate of the MOS transistor Q1;
the source of the MOS transistor Q1 is connected to the first end of the third resistor R3, and the drain and the second end of the second resistor R2 are grounded;
the second terminal of the third resistor R3 is the second terminal of the power detecting unit 110.
The power supply unit 210 includes a fourth resistor R4, wherein:
a first terminal of the fourth resistor R4 is connected to the second power supply VIO, and a second terminal is a first terminal of the power supply unit 210.
The power supply unit 210 further includes a fifth resistor R5, wherein:
the first terminal of the fifth resistor R5 is connected to the second terminal of the fourth resistor R4, and the second terminal is connected to the first terminal of the in-box detecting unit 220.
The in-box detection unit 220 includes a bluetooth chip BT, in which:
the input/output pin GPIO of the bluetooth chip is a first end of the in-box detection unit 220.
It should be understood that the second power supply VIO is a power supply for the input/output pin GPIO of the bluetooth chip, and is typically 1.8V. When the electric quantity of the first power supply VDD is not exhausted, the MOS tube Q1 is cut off, and the voltage received by the input/output pin GPIO of the Bluetooth chip is the voltage provided by the second power supply VIO;
when the power of the first power supply VDD is exhausted, the gate voltage of the MOS transistor Q1 is at a low level due to the pull-down of the second resistor R2, at this time, if the earphone 20 is placed in the charging box 10, the source voltage of the MOS transistor Q1 is pulled up to the second power supply VIO through the third resistor R3 and the fourth resistor R4, the voltage difference between the source and the gate of the MOS transistor Q1 is the voltage of the second power supply VIO, the MOS transistor Q1 is turned on, at this time, the voltage received by the input/output pin GPIO of the bluetooth chip is pulled down, and therefore, the bluetooth chip BT can know whether the earphone 20 is plugged in the box by detecting whether the voltage received by the input/output pin of the bluetooth chip BT is pulled down, and whether the charging box 10 is exhausted.
The embodiment can realize the detection of the action that the earphone enters the box when the electric quantity of the charging box is exhausted only by a small quantity of devices through the specific design of the electric quantity detection unit, the power supply unit and the box entering detection unit, and the circuit cost is reduced.
Referring to fig. 3, fig. 3 is a schematic diagram of another optional structure of the earphone insertion detection circuit of fig. 1.
In this embodiment, when the first contact P1 and the second contact P2 are both communication contacts, the headset-in-box detection circuit further includes a communication control unit 120 disposed in the charging box 10, wherein:
the communication terminal of the communication control unit 120 is connected to the second terminal of the power detecting unit 110 and the first contact P1 respectively;
the second contact P2 is connected to a second end of the in-box detection unit 220.
It should be understood that a plurality of contacts, such as a power supply contact P3, a communication contact P1, and a ground contact P5, are generally disposed on the charging box 10, wherein the communication contact of the charging box 10 refers to a contact corresponding to a communication interface of the microcontroller MCU in the charging box 10, such as a contact corresponding to a UART interface. Accordingly, the headset 20 is generally provided with a plurality of contacts, such as a power supply contact P4, a communication contact P2, and a ground contact P6, respectively, where the communication contact of the headset 20 refers to a contact corresponding to the communication interface of the bluetooth chip BT in the headset 20.
It should be noted that, when the first contact P1 and the second contact P2 are both communication contacts, in order to implement multiplexing of the communication contacts, the communication control unit 120 needs to be arranged to implement both functions of normal communication and in-box detection.
Further, the communication control unit 120 includes a microcontroller MCU, wherein:
the communication pin UART0 of the microcontroller is a communication terminal of the communication control unit 120.
The power detecting unit 110 includes a first resistor R1, a second resistor R2, a third resistor R3 and a MOS transistor Q1, wherein:
a first end of the first resistor R1 is a first end of the electric quantity detecting unit 110, and a second end thereof is respectively connected to a first end of the second resistor R2 and a gate of the MOS transistor Q1;
the source of the MOS transistor Q1 is connected to the first end of the third resistor R3, and the drain and the second end of the second resistor R2 are grounded;
the second terminal of the third resistor R3 is the second terminal of the power detecting unit 110.
The power supply unit 210 includes a fourth resistor R4, wherein:
a first terminal of the fourth resistor R4 is connected to the second power supply VIO, and a second terminal is a first terminal of the power supply unit 210.
The power supply unit 210 further includes a fifth resistor R5, wherein:
the first terminal of the fifth resistor R5 is connected to the second terminal of the fourth resistor R4, and the second terminal is connected to the first terminal of the in-box detecting unit 220.
The in-box detection unit 220 includes a bluetooth chip BT, in which:
the communication pin UART1 of the bluetooth chip is the second terminal of the in-box detection unit 220.
It should be understood that when the charging box 10 is in the normal operation state, the voltage difference V between the gate and the source of the MOS transistor Q1gsWhen the MOS transistor Q1 is turned off, the communication pin UART0 of the microcontroller sends a communication signal, which is sent to the communication pin UART1 of the bluetooth chip through the first contact P1 and the second contact P2 in sequence, and the communication is normal.
When the charging box 10 is in a power exhaustion state, the gate voltage of the MOS transistor Q1 is at a low level due to the pull-down of the second resistor R2, at this time, if the earphone 20 is placed into the charging box 10, the source voltage of the MOS transistor Q1 is pulled up to the second power supply VIO through the third resistor R3 and the fourth resistor R4, the voltage difference between the source and the gate of the MOS transistor Q1 is the voltage of the second power supply VIO, the MOS transistor Q1 is turned on, at this time, the voltage received by the input/output pin GPIO of the bluetooth chip is pulled down, and therefore, the bluetooth chip BT can know whether the earphone 20 is plugged into the box by detecting whether the voltage received by the input/output pin of the bluetooth chip BT is pulled down, and whether the charging box 10 is power exhausted.
This embodiment can be used as an auxiliary test for the main in-box test circuit in the charging box 10, and it should be understood that, usually, after the earphone 20 is put into the charging box 10, the main test is performed by using the main in-box test circuit in the charging box 10, and after the main test is completed, the charging box 10 and the earphone 20 perform normal communication. And because during normal communication, the communication pin UART0 of the microcontroller also sends out a low level, and similarly, the level of the input/output pin GPIO of the bluetooth chip is pulled down, in order to avoid a wrong determination result, the bluetooth chip BT needs to detect whether the master-in-box detection circuit is triggered or not, if the master-in-box detection circuit is triggered, the input/output pin GPIO does not need to detect the level, if the master-in-box detection circuit is not triggered, the input/output pin GPIO needs to detect the level, and when it is detected that the level is pulled down, it can be determined that the level is caused by the earphone 20 being plugged into the box and the charging box 10 being exhausted of electricity.
This embodiment is through multiplexing first contact, second contact and communication contact to design corresponding communication control circuit, both realized the normal communication of box and earphone that charges, also realized that the earphone goes into the box and detects, perfect the use scene of product, improved the market competition of product.
The utility model also provides a TWS earphone, which comprises the above earphone in-box detection circuit, the circuit structure of the earphone in-box detection circuit of the TWS earphone can refer to the above embodiment, and is not repeated herein; it can be understood that, since the TWS headset of the present embodiment adopts the technical solution of the headset in-box detection circuit, the TWS headset has all the above-mentioned advantages.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a box detection circuitry is gone into to earphone which characterized in that, box detection circuitry is gone into to earphone includes electric quantity detecting element and the first contact that sets up in the box that charges, sets up power supply unit in the earphone, goes into box detecting element and second contact, wherein:
the first end of the electric quantity detection unit is connected with a first power supply, and the second end of the electric quantity detection unit is connected with the first contact;
the first end of the power supply unit is respectively connected with the first end of the box-entering detection unit and the second contact;
the first end of the box entering detection unit is connected with the second contact;
the power supply unit is used for outputting a first voltage to the box entering detection unit and is grounded through the electric quantity detection unit when the first contact is in contact with the second contact and the electric quantity detection unit detects that the electric quantity of the first power supply is exhausted;
and the box entering detection unit is used for receiving the first voltage and judging that the earphone enters the box when detecting that the first voltage is reduced.
2. The circuit of claim 1, wherein the power detection unit comprises a first resistor, a second resistor, a third resistor and a MOS transistor, wherein:
the first end of the first resistor is the first end of the electric quantity detection unit, and the second end of the first resistor is respectively connected with the first end of the second resistor and the grid electrode of the MOS tube;
the source electrode of the MOS tube is connected with the first end of the third resistor, and the drain electrode of the MOS tube and the second end of the second resistor are grounded;
the second end of the third resistor is the second end of the electric quantity detection unit.
3. The circuit of claim 2, wherein the power supply unit comprises a fourth resistor, wherein:
and the first end of the fourth resistor is connected with a second power supply, and the second end of the fourth resistor is the first end of the power supply unit.
4. The circuit of claim 3, wherein the power supply unit further comprises a fifth resistor, wherein:
and the first end of the fifth resistor is connected with the second end of the fourth resistor, and the second end of the fifth resistor is connected with the first end of the box-entering detection unit.
5. The circuit of claim 4, wherein the in-box detection unit comprises a Bluetooth chip, wherein:
and an input/output pin of the Bluetooth chip is a first end of the box-in detection unit.
6. The circuit of claim 1, wherein the headset in-box detection circuit further comprises a communication control unit disposed within the charging box, wherein:
the communication end of the communication control unit is respectively connected with the second end of the electric quantity detection unit and the first contact;
the second contact is connected with a second end of the in-box detection unit.
7. The circuit of claim 6, wherein the communication control unit comprises a microcontroller, wherein:
and the communication pin of the microcontroller is a communication end of the communication control unit.
8. The circuit of claim 7, wherein the power detection unit comprises a first resistor, a second resistor, a third resistor and a MOS transistor, wherein:
the first end of the first resistor is the first end of the electric quantity detection unit, and the second end of the first resistor is respectively connected with the first end of the second resistor and the grid electrode of the MOS tube;
the source electrode of the MOS tube is connected with the first end of the third resistor, and the drain electrode of the MOS tube and the second end of the second resistor are grounded;
the second end of the third resistor is the second end of the electric quantity detection unit.
9. The circuit of claim 8, wherein the in-box detection unit comprises a bluetooth chip, wherein:
and the communication pin of the Bluetooth chip is the second end of the box-in detection unit.
10. A TWS headset comprising a headset in-box detection circuit as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021624318.4U CN212486763U (en) | 2020-08-06 | 2020-08-06 | Earphone box-entering detection circuit and TWS earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021624318.4U CN212486763U (en) | 2020-08-06 | 2020-08-06 | Earphone box-entering detection circuit and TWS earphone |
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| Publication Number | Publication Date |
|---|---|
| CN212486763U true CN212486763U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021624318.4U Active CN212486763U (en) | 2020-08-06 | 2020-08-06 | Earphone box-entering detection circuit and TWS earphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865248A (en) * | 2021-02-09 | 2021-05-28 | 深圳市冠旭电子股份有限公司 | Box-entering detection method and device of wireless earphone, charging box and readable storage medium |
-
2020
- 2020-08-06 CN CN202021624318.4U patent/CN212486763U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865248A (en) * | 2021-02-09 | 2021-05-28 | 深圳市冠旭电子股份有限公司 | Box-entering detection method and device of wireless earphone, charging box and readable storage medium |
| CN112865248B (en) * | 2021-02-09 | 2023-07-07 | 深圳市冠旭电子股份有限公司 | Method and device for detecting box entering of wireless earphone, charging box and readable storage medium |
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Address after: 516006 community 37, Zhongkai high tech Zone, Huizhou, Guangdong Patentee after: Tongli Technology Co.,Ltd. Address before: 516006 Zhongkai high tech Zone 37, Huizhou, Guangdong Patentee before: TONLY ELECTRONICS HOLDINGS Ltd. |