CN109089305B - Earphone adapter for reducing power consumption of mobile terminal and mobile terminal - Google Patents
Earphone adapter for reducing power consumption of mobile terminal and mobile terminal Download PDFInfo
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- CN109089305B CN109089305B CN201810977972.4A CN201810977972A CN109089305B CN 109089305 B CN109089305 B CN 109089305B CN 201810977972 A CN201810977972 A CN 201810977972A CN 109089305 B CN109089305 B CN 109089305B
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- earphone
- resistor
- interface
- mobile terminal
- usb interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses an earphone adapter and a mobile terminal for reducing the power consumption of the mobile terminal, wherein the earphone adapter comprises a USB interface, an earphone interface, a pull-down module connected with a detection pin of the USB interface and a switch module connected with a power pin of the USB interface; if an earphone plug is inserted into the current earphone interface, the detection pin is grounded through the pull-down module and the switch module is turned on, so that the power pin is conducted with the earphone interface, and when the mobile terminal triggers an earphone event, the power pin is electrified and outputs working voltage to the earphone interface. The problem that the electric quantity is consumed by inserting the earphone adapter is effectively avoided no matter whether the earphone is inserted or not or whether the earphone works or not, the power consumption of the mobile terminal is reduced, and the endurance time is prolonged.
Description
Technical Field
The invention relates to the technical field of mobile terminals, in particular to an earphone adapter and a mobile terminal for reducing power consumption of the mobile terminal.
Background
At present, due to the rapid development of smart phones, the space of a cloth plate inside the smart phones is more and more limited, so that more and more mobile phone manufacturers cancel traditional 3.5mm earphone interfaces and adopt USB earphone adapters. Therefore, the design problem of the mobile phone is solved, and the original 3.5mm earphone of the user is compatible. However, when the mobile phone does not trigger an earphone event such as playing music or talking, and only the earphone adapter is inserted, the mobile phone will start to consume power quickly, which results in too fast power consumption of the mobile phone, and the mobile phone may not have electric quantity when the user wants to listen to songs.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an earphone adapter and a mobile terminal for reducing the power consumption of the mobile terminal, so that after the earphone adapter is connected with the mobile terminal and an earphone is inserted and an earphone event is triggered, a power pin is powered on and outputs working voltage to an earphone interface, the problem that the power consumption is caused by the insertion of the earphone adapter no matter whether the earphone is inserted or not or whether the earphone works or not is effectively solved, the power consumption of the mobile terminal is reduced, and the endurance time is prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
an earphone adapter comprises a USB interface, an earphone interface, a pull-down module connected with a detection pin of the USB interface and a switch module connected with a power pin of the USB interface, wherein after the USB interface is connected with a mobile terminal, if an earphone plug is not inserted into the current earphone interface, the detection pin is suspended and the switch module is closed, so that a path between the power pin and the earphone interface is disconnected; if an earphone plug is inserted into the current earphone interface, the detection pin is grounded through the pull-down module and the switch module is turned on, so that the power pin is conducted with the earphone interface, and when the mobile terminal triggers an earphone event, the power pin is electrified and outputs working voltage to the earphone interface.
The earphone adapter in, the module that pulls down includes first resistance, the detection pin of USB interface is connected to the one end of first resistance, the JD end of earphone interface is connected to the other end of first resistance.
IN the earphone adapter, the switch module comprises a first MOS tube, the JD end of the earphone interface is connected with the grid electrode of the first MOS tube, the source electrode of the first MOS tube is connected with the power pin of the USB interface, and the drain electrode of the first MOS tube is connected with the VBUS _ IN signal end.
The earphone adapter further comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor and a second MOS (metal oxide semiconductor) tube; one end of the second resistor is connected with a power pin of the USB interface, and the other end of the second resistor is connected with one end of the third resistor and the JD end of the earphone interface; the other end of the third resistor is grounded; one end of the fourth resistor is connected with a VBUS _ IN signal end, and the other end of the fourth resistor is connected with one end of the first capacitor, one end of the fifth resistor and the grid electrode of the second MOS tube; the other end of the first capacitor and the other end of the fifth resistor are both grounded; the drain electrode of the second MOS tube is connected with a D3V3 signal end, the source electrode of the second MOS tube is connected with one end of a sixth resistor, and the other end of the sixth resistor is grounded through a seventh resistor.
The earphone adapter further comprises a second capacitor, a third capacitor, a first inductor and a second inductor, wherein one end of the second capacitor is connected with one end of the first inductor and the AUD _ R end of the earphone interface, and the other end of the second capacitor is grounded; one end of the third capacitor is connected with one end of the second inductor and the AUD _ L end of the earphone interface, and the other end of the third capacitor is grounded; the other end of the first inductor and the other end of the second inductor are both connected with the USB interface.
In the earphone adapter, the first MOS tube is a P-channel MOS tube.
In the earphone adapter, the second MOS tube is an N-channel MOS tube.
In the earphone adapter, the USB interface is a type-c interface.
A mobile terminal comprises the earphone adapter, and the earphone adapter is connected with the mobile terminal through a USB interface.
The mobile terminal further comprises:
the detection module is used for detecting whether an earphone event is triggered currently or not when an earphone plug is inserted into the earphone interface, and outputting a starting signal to the power management module if the earphone event is triggered currently;
and the power management module is used for controlling the power pin of the USB interface to be electrified when receiving the starting signal.
Compared with the prior art, in the earphone adapter and the mobile terminal for reducing the power consumption of the mobile terminal, the earphone adapter comprises a USB interface, an earphone interface, a pull-down module connected with a detection pin of the USB interface and a switch module connected with a power pin of the USB interface, after the USB interface is connected with the mobile terminal, if an earphone plug is not inserted into the current earphone interface, the detection pin is suspended and the switch module is closed, so that a path between the power pin and the earphone interface is disconnected; if an earphone plug is inserted into the current earphone interface, the detection pin is grounded through the pull-down module and the switch module is turned on, so that the power pin is conducted with the earphone interface, and when the mobile terminal triggers an earphone event, the power pin is electrified and outputs working voltage to the earphone interface. Make earphone adapter and mobile terminal be connected the back, must insert the earphone and triggered the earphone incident after, power pin just goes up the electricity and exports operating voltage to the earphone interface, has effectively avoided no matter whether having or not insert earphone or whether the earphone works, and the problem that the insertion of earphone adapter will produce the electric quantity consumption all has effectively reduced mobile terminal's consumption, extension duration.
Drawings
Fig. 1 is a circuit diagram of a USB interface in an earphone adapter for reducing power consumption of a mobile terminal according to the present invention.
Fig. 2 is a circuit diagram of an earphone interface in the earphone adapter for reducing power consumption of the mobile terminal according to the present invention.
Fig. 3 is a block diagram of a mobile terminal according to the present invention.
Detailed Description
In view of the defects that the power consumption of a mobile terminal is too high due to the insertion of an earphone adapter in the prior art and the like, the invention aims to provide the earphone adapter and the mobile terminal for reducing the power consumption of the mobile terminal, so that after the earphone adapter is connected with the mobile terminal, an earphone is inserted and an earphone event is triggered, a power supply pin is electrified and outputs working voltage to an earphone interface, the problem that the power consumption is generated due to the insertion of the earphone adapter whether the earphone is inserted or not or whether the earphone works or not is effectively solved, the power consumption of the mobile terminal is reduced, and the endurance time is prolonged.
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the earphone adapter provided by the present invention includes a USB interface J1 and an earphone interface J2, that is, the earphone adapter is connected to a mobile terminal through the USB interface J1, and is connected to a 3.5mm earphone through the earphone interface J2 to realize the conversion of the earphone interface J2, specifically, the earphone adapter further includes a pull-down module 11 connected to a detection pin of the USB interface J1 and a switch module 12 connected to a power pin of the USB interface J1, and both the pull-down module 11 and the switch module 12 are connected to the earphone interface J2.
After the USB interface J1 is connected to the mobile terminal, if an earphone plug is not inserted into the current earphone interface J2, the detection pin is suspended and the switch module 12 is turned off, so that the path between the power pin and the earphone interface J2 is disconnected; specifically, when no earphone is connected, even if the earphone adapter is connected with the mobile terminal, the power supply pin does not output voltage to the earphone interface J2 due to the disconnection of the path, and at this time, the mobile terminal does not generate power consumption. If an earphone plug is inserted into the current earphone interface J2, the detection pin is grounded through the pull-down module 11 and the switch module 12 is turned on, so that the power supply pin is conducted with the earphone interface J2, and when the mobile terminal triggers an earphone event, the power supply pin is powered on and outputs working voltage to the earphone interface J2; when the USB interface J1 is connected with the mobile terminal and the earphone is also connected, the power pin is conducted with the earphone interface J2, and only when the mobile terminal triggers the earphone event, the power pin is controlled to be powered on to output the working voltage to the earphone interface J2, in other words, if the earphone event such as music playing, conversation and the like is not triggered after the earphone is inserted, at the moment, although the path is conducted, the power pin is not powered on, the mobile terminal does not generate power consumption, only when the earphone is inserted and the earphone event is triggered, the working voltage is output, the earphone is inserted and the earphone event is triggered to indicate that the user needs to use the earphone at the moment, the on/off of the path and the power-on state of the power pin can be controlled by the headset on state and the trigger state of the headset event, and then reduce the consumption of mobile terminal when using earphone adapter, improve mobile terminal's duration.
After the earphone adapter is connected with the mobile terminal, the earphone is required to be inserted and an earphone event is triggered, the power pin is powered on and outputs working voltage to the earphone interface J2, the problem that the electric quantity is consumed when the earphone adapter is inserted or not or whether the earphone works or not is effectively solved, the power consumption of the mobile terminal is reduced, and the endurance time is prolonged.
In this embodiment, the USB interface J1 is a type-c interface, but in other embodiments, other types of USB interfaces J1 may be adopted, in which the detection pin is an a5 pin, i.e., a CC pin, and the power supply pin is an a9 pin, i.e., a VBUS pin.
Specifically, the pull-down module 11 includes a first resistor R1, one end of the first resistor R1 is connected to the detection pin of the USB interface J1, and the other end of the first resistor R1 is connected to the JD terminal of the headphone interface J2. The switch module 12 includes a first MOS transistor Q1, the gate of the first MOS transistor Q1 is connected to the JD terminal of the earphone interface J2, the source of the first MOS transistor Q1 is connected to the power pin of the USB interface J1, and the drain of the first MOS transistor Q1 is connected to the VBUS _ IN signal terminal. In this embodiment, the first MOS transistor Q1 is a P-channel MOS transistor.
In specific implementation, when only the earphone adapter is inserted into the mobile terminal, the pin a5 of the USB interface J1 is in a suspended state, the first MOS transistor Q1 is in a non-conducting state, and at this time, the mobile terminal has no reaction and does not output any voltage/current, so that the mobile terminal has no power consumption; when a 3.5mm earphone is inserted into the earphone adapter and the earphone adapter is inserted into the mobile terminal, the JD end of the earphone interface J2 is short-circuited with the AGND end, so that the JD end is grounded, therefore the a5 pin of the USB interface J1 will be grounded through the pull-down resistor R1, meanwhile, the first MOS transistor Q1 is also in a conducting state, at this time, the mobile terminal temporarily does not supply power to the earphone interface J2, when an upper layer application has an earphone event such as making a call or playing music, the power pin is powered up and outputs an operating voltage to the headset interface J2 so that the headset operates normally, and if no upper layer application notifies the headset of an event, then there is not voltage output on the power pin for after having inserted the earphone and triggered the earphone incident, power pin just goes up the electricity and exports operating voltage to earphone interface J2, has effectively avoided no matter there is or not inserting the earphone or whether the earphone works, and the problem that the electric quantity consumption will all be produced in the insertion of earphone adapter.
Further, the earphone adapter further includes a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, and a second MOS transistor Q2; one end of the second resistor R2 is connected with a power supply pin of a USB interface J1, and the other end of the second resistor R2 is connected with one end of a third resistor R3 and a JD end of an earphone interface J2; the other end of the third resistor R3 is grounded; one end of the fourth resistor R4 is connected with a VBUS _ IN signal end, and the other end of the fourth resistor R4 is connected with one end of the first capacitor C1, one end of the fifth resistor R5 and the gate of the second MOS transistor Q2; the other end of the first capacitor C1 and the other end of the fifth resistor R5 are both grounded; the drain of the second MOS transistor Q2 is connected to the D3V3 signal terminal, the source of the second MOS transistor Q2 is connected to one end of a sixth resistor R6, and the other end of the sixth resistor R6 is grounded through a seventh resistor R7. In this embodiment, the second MOS transistor Q2 is an N-channel MOS transistor.
Furthermore, the earphone adapter further includes a second capacitor C2, a third capacitor C3, a first inductor L1 and a second inductor L2, one end of the second capacitor C2 is connected to one end of the first inductor L1 and the AUD _ R end of the earphone interface J2, and the other end of the second capacitor C2 is grounded; one end of the third capacitor C3 is connected to one end of the second inductor L2 and the AUD _ L end of the earphone interface J2, and the other end of the third capacitor C3 is grounded; the other end of the first inductor L1 and the other end of the second inductor L2 are both connected with the USB interface J1. Clutter interference in the audio signal is filtered through a resonance circuit formed by the capacitor and the inductor, and the tone quality of the earphone is improved.
Correspondingly, the invention also provides a mobile terminal which comprises the earphone adapter, and the earphone adapter is connected with the mobile terminal through the USB interface J1. Further, as shown in fig. 3, the mobile terminal further includes a detection module 21 and a power management module 22, where the detection module 21 is connected to the power management module 22, where the detection module 21 is configured to detect whether an earphone event is currently triggered when an earphone plug is inserted into the earphone interface J2, and if so, output a turn-on signal to the power management module 22; the power management module 22 is configured to control a power pin of the USB interface J1 to be powered on when receiving a power-on signal.
That is, after the earphone adapter is inserted into the mobile terminal, when the earphone plug is inserted into the earphone interface J2, it first detects whether the earphone event such as playing music is triggered at present, if yes, it outputs a turn-on signal, otherwise, it does not output a turn-on signal, when the turn-on signal is received, the power pin of the USB interface J1 is controlled to be powered on by the voltage management module, so that the earphone works normally, and it effectively solves the problem that the earphone adapter is inserted into the mobile terminal and the earphone is connected, but the power consumption of the mobile terminal is too fast when the earphone event such as playing music is not started, of course, when the earphone interface J2 is not inserted into the earphone plug, the path between the power pin and the earphone interface J2 is disconnected, and the mobile terminal is not open, so the on-off of the path and the power on-on state of the power pin can be controlled by the earphone connection state and the trigger state of the earphone event, the problem that the electric quantity is consumed by inserting the earphone adapter is effectively avoided no matter whether the earphone is inserted or not or whether the earphone works or not, the power consumption of the mobile terminal is reduced, and the endurance time is prolonged.
In summary, in the earphone adapter and the mobile terminal for reducing power consumption of the mobile terminal provided by the invention, the earphone adapter comprises a USB interface, an earphone interface, a pull-down module connected to a detection pin of the USB interface, and a switch module connected to a power pin of the USB interface, after the USB interface is connected to the mobile terminal, if an earphone plug is not inserted into the current earphone interface, the detection pin is suspended and the switch module is closed, so that a path between the power pin and the earphone interface is disconnected; if an earphone plug is inserted into the current earphone interface, the detection pin is grounded through the pull-down module and the switch module is turned on, so that the power pin is conducted with the earphone interface, and when the mobile terminal triggers an earphone event, the power pin is electrified and outputs working voltage to the earphone interface. Make earphone adapter and mobile terminal be connected the back, must insert the earphone and triggered the earphone incident after, power pin just goes up the electricity and exports operating voltage to the earphone interface, has effectively avoided no matter whether having or not insert earphone or whether the earphone works, and the problem that the insertion of earphone adapter will produce the electric quantity consumption all has effectively reduced mobile terminal's consumption, extension duration.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. An earphone adapter comprises a USB interface and an earphone interface, and is characterized by further comprising a pull-down module connected with a detection pin of the USB interface and a switch module connected with a power pin of the USB interface, wherein after the USB interface is connected with a mobile terminal, if an earphone plug is not inserted into the current earphone interface, the detection pin is suspended and the switch module is closed, so that a path between the power pin and the earphone interface is disconnected; if an earphone plug is inserted into the current earphone interface, the detection pin is grounded through the pull-down module and the switch module is turned on, so that the power pin is conducted with the earphone interface, and when the mobile terminal triggers an earphone event, the power pin is electrified and outputs working voltage to the earphone interface;
the pull-down module comprises a first resistor, one end of the first resistor is connected with a detection pin of the USB interface, and the other end of the first resistor is connected with the JD end of the earphone interface;
when only the earphone adapter is inserted into the mobile terminal, the A5 pin of the USB interface J1 is in a suspended state; when the earphone is inserted into the earphone adapter, and the earphone adapter is inserted into the mobile terminal, the JD end of the earphone interface is in short circuit with the AGND end, so that the JD end is grounded, and the A5 pin of the USB interface is grounded through the first resistor.
2. The headset adapter according to claim 1, wherein the switch module includes a first MOS transistor, a gate of the first MOS transistor is connected to the JD terminal of the headset interface, a source of the first MOS transistor is connected to the power pin of the USB interface, and a drain of the first MOS transistor is connected to the VBUS _ IN signal terminal.
3. The headset adapter of claim 2, further comprising a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, and a second MOS transistor; one end of the second resistor is connected with a power pin of the USB interface, and the other end of the second resistor is connected with one end of the third resistor and the JD end of the earphone interface; the other end of the third resistor is grounded; one end of the fourth resistor is connected with a VBUS _ IN signal end, and the other end of the fourth resistor is connected with one end of the first capacitor, one end of the fifth resistor and the grid electrode of the second MOS tube; the other end of the first capacitor and the other end of the fifth resistor are both grounded; the drain electrode of the second MOS tube is connected with a D3V3 signal end, the source electrode of the second MOS tube is connected with one end of a sixth resistor, and the other end of the sixth resistor is grounded through a seventh resistor.
4. The headset adapter according to claim 1, further comprising a second capacitor, a third capacitor, a first inductor, and a second inductor, wherein one end of the second capacitor is connected to one end of the first inductor and the AUD _ R end of the headset interface, and the other end of the second capacitor is grounded; one end of the third capacitor is connected with one end of the second inductor and the AUD _ L end of the earphone interface, and the other end of the third capacitor is grounded; the other end of the first inductor and the other end of the second inductor are both connected with the USB interface.
5. The earphone adapter according to claim 2, wherein the first MOS transistor is a P-channel MOS transistor.
6. The earphone adapter of claim 3, wherein the second MOS transistor is an N-channel MOS transistor.
7. The headset adapter of claim 1, wherein the USB interface is a type-c interface.
8. A mobile terminal, characterized in that it comprises a headset adapter according to any of claims 1-7, which is connected to the mobile terminal via a USB interface.
9. The mobile terminal of claim 8, further comprising:
the detection module is used for detecting whether an earphone event is triggered currently or not when an earphone plug is inserted into the earphone interface, and outputting a starting signal to the power management module if the earphone event is triggered currently;
and the power management module is used for controlling the power pin of the USB interface to be electrified when receiving the starting signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810977972.4A CN109089305B (en) | 2018-08-27 | 2018-08-27 | Earphone adapter for reducing power consumption of mobile terminal and mobile terminal |
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| CN201810977972.4A CN109089305B (en) | 2018-08-27 | 2018-08-27 | Earphone adapter for reducing power consumption of mobile terminal and mobile terminal |
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| CN109089305A CN109089305A (en) | 2018-12-25 |
| CN109089305B true CN109089305B (en) | 2021-09-14 |
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| CN114615600A (en) * | 2020-12-04 | 2022-06-10 | 同响科技股份有限公司 | Audio signal playing control system and method |
| CN113316057B (en) * | 2021-05-28 | 2024-01-16 | 维沃移动通信有限公司 | Earphone, method and device for reducing power consumption and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872879A (en) * | 2016-04-28 | 2016-08-17 | 乐视控股（北京）有限公司 | Method and device for power supply to headset |
| CN108093329A (en) * | 2018-01-17 | 2018-05-29 | 歌尔科技有限公司 | Peripheral type detection circuit and mobile terminal based on shared interface |
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| KR20150016740A (en) * | 2013-08-05 | 2015-02-13 | 삼성전기주식회사 | Electronic shelf label, system for electronic shelf label and method of operating system for electronic shelf label |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872879A (en) * | 2016-04-28 | 2016-08-17 | 乐视控股（北京）有限公司 | Method and device for power supply to headset |
| CN108093329A (en) * | 2018-01-17 | 2018-05-29 | 歌尔科技有限公司 | Peripheral type detection circuit and mobile terminal based on shared interface |
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