CN206559623U - Audio signal output interface, mainboard and electronic equipment - Google Patents
Audio signal output interface, mainboard and electronic equipment Download PDFInfo
- Publication number
- CN206559623U CN206559623U CN201720283481.0U CN201720283481U CN206559623U CN 206559623 U CN206559623 U CN 206559623U CN 201720283481 U CN201720283481 U CN 201720283481U CN 206559623 U CN206559623 U CN 206559623U
- Authority
- CN
- China
- Prior art keywords
- pin
- audio signal
- signal output
- mainboard
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005236 sound signal Effects 0.000 title claims abstract description 54
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 33
- 230000000694 effects Effects 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract 2
- 239000013307 optical fiber Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000003371 toe Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses an audio signal output interface, mainboard and electronic equipment, this electronic equipment includes the mainboard and is applied to the audio signal output interface on this mainboard, this mainboard still includes control circuit, simulation audio output circuit and digital audio output circuit, this audio signal output interface includes first class pin, second class pin, third class pin and fourth class pin, analog audio output circuit output simulation audio signal is connected to one of them first class pin, digital audio output circuit output digital audio signal is connected to second class pin, control circuit judges the input device type according to detecting third class pin level change when equipment input, and control the corresponding audio output circuit of this input device type and follow this audio signal output interface output audio signal, fourth class pin ground connection. The utility model discloses well audio signal output interface can be with two audio output interfaces of earphone and optic fibre multiplexing, solves the too much inconvenience of interface quantity on the mainboard.
Description
Technical field
The utility model is related to technical field of electronic equipment, more particularly to a kind of audio signal output interface, mainboard and
Electronic equipment.
Background technology
As the improvement of people's living standards, the purchasing power of people also improves a lot, therefore production firm is in electronics
Consumer demand is increasingly considered in the design and production process of equipment, such as operation processing is more powerful quick, display effect
It is apparent gorgeous, the more perfect shock of tonequality, so that user is more on the spot in person.But some electronic equipments such as TV, slight
Body volume in be difficult to put down all electronic components, although be built-in with sound equipment, but be difficult to reach Professional sound box broadcasting level,
Therefore production firm can set multiple input/output interfaces to reach more preferable use to connect external equipment in fuselage mainboard
Experience at family.
In the prior art, such as TV, computer etc., typically in the motherboard can provided with HDMI, DVI, VGA, S/PDIF, AV with
And the one or more combination in the multiple interfaces such as earphone, wherein：HDMI is used to carry out digital video and audio letter simultaneously
Number transmission；DVI interface is used for the transmission for carrying out digital video signal；USB interface is used for the transmission for carrying out analog video signal；
SPDIF interfaces are used for the transmission for carrying out digital audio and video signals；Transmission of the AV with earphone interface for carrying out simulated audio signal, its
SPDIF interfaces in middle digital audio interface include RCA coaxial interfaces, BNC coaxial interfaces and TosLink optical fiber interfaces.
In the prior art, in the electronic device, the earphone interface typically a diameter of 3.5mm circle for audio signal transmission
Shape interface, and optical fiber interface one of which uses the circle interface similar with 3.5mm earphone interfaces, but set in electronics
It is the method using the input or output interface for being respectively equipped with different video or audio when being laid out on standby mainboard, so causes
The interface quantity of the mainboard of electronic equipment is excessive, area is increased, and causes the increase of electronic equipment volume, influence fuselage and mainboard
It is attractive in appearance, while being also a kind of waste in cost.
Utility model content
Based on this, the purpose of this utility model is to propose a kind of audio output interface, mainboard and electronic equipment, can be by
Earphone in mainboard interface and two interface duplexes of optical fiber in electronic equipment are an audio output interface, solve to connect on mainboard
The excessive inconvenience of mouth quantity.
The utility model provides a kind of audio signal output interface, and concrete technical scheme is as follows：
The utility model provides a kind of audio output interface, and using in the motherboard, the audio signal output interface includes：
First kind pin, is connected with the analogue audio frequency output circuit on the mainboard；
Equations of The Second Kind pin, is connected with the DAB output circuit on the mainboard；
3rd class pin, is connected with the control circuit on the mainboard, and the 3rd class pin at least includes the first detection
Pin and the second detection pin；
The control circuit is connected with the analogue audio frequency output circuit and the DAB output circuit respectively, when slotting
The pleasant generator terminal period of the day from 11 p.m. to 1 a.m, the first detection pin and the second detection pin are changed into low level, the control by high level
Circuit controls the analogue audio frequency output circuit from the first kind pin exports audio signal；It is described when insertion optic fibre connector
One of holding high level is constant in first detection pin and the second detection pin, and another is changed into low level from high level,
The control circuit controls the DAB output circuit from the Equations of The Second Kind pin exports audio signal.
The audio signal output interface that the utility model is provided, including for exporting digital audio and video signals or analogue audio frequency letter
Number pin and the detection pin that changes of level during equipment input, control circuit on mainboard is according to the electricity of detection pin
Input equipment type is judged in flat change, and controls the corresponding audio output circuit of the input equipment type defeated from audio signal
Outgoing interface exports audio signal, has been achieved in that in an audio signal output interface to earphone and optical fiber audio output interface
Multiplexing, reduces the quantity of interface on mainboard.
In addition, the audio signal output interface provided according to the utility model, can also have technology additional as follows special
Levy：
Further, the first kind pin includes the first pin, second pin and the 3rd pin, first pin
Ground connection, the second pin connects the left channel signals output circuit in the analogue audio frequency output circuit, the 3rd pin
Connect the right-channel signals output circuit in the analogue audio frequency output circuit.
Further, the Equations of The Second Kind pin includes the 4th pin, the 5th pin and the 6th pin, the 4th pin
The signal output apparatus in the DAB output circuit is connected, the 5th pin connects the DAB output circuit
In power supply circuit, the 6th pin ground connection.
Further, the audio signal output interface also includes the 4th class pin, and the 4th class pin includes the 7th
Pin and the 8th pin, the 7th pin and the 8th pin are grounded.
Further, the audio signal output interface also includes a main body, and the body front end is provided with and the main body
The jack of inside connection.
Further, first pin, second pin and the 7th pin are located at the side of the main body, the described 3rd
Pin, first detection pin, second detection pin and the 8th pin be located at the main body opposite side, the 4th pin,
5th pin and the 6th pin are located at the bottom of the main body.
Further, first pin and the first detection pin, the second pin and the 3rd pin and described the
Seven pins and the 8th pin are respectively just to setting.
Further, the main body also includes a sheet metal, the sheet metal include two vertical component effects being oppositely arranged with
And the horizontal part of two vertical component effects of connection, the 7th pin and the 8th pin are respectively arranged on two vertical component effects
Side away from the horizontal part.
The utility model also provide it is a kind of include the mainboard of above-mentioned audio signal output interface, the mainboard includes control electricity
Road, analogue audio frequency output circuit and DAB output circuit, the analogue audio frequency output circuit and the audio signal are defeated
The first kind pin connection of outgoing interface, the Equations of The Second Kind pin of the DAB output circuit and the audio signal output interface
Connection, it is described control circuit respectively with the analogue audio frequency output circuit, the DAB output circuit and the audio
The 3rd class pin connection of signal output interface.
The utility model, which is also provided, a kind of includes the electronic equipment of above-mentioned mainboard.
Brief description of the drawings
Fig. 1 is the structural representation for the mainboard that the embodiment of the utility model one is proposed.
Fig. 2 is the present invention looks up structural representation of Fig. 1 sound intermediate frequency signal output interfaces.
Fig. 3 is the overlooking the structure diagram of Fig. 1 sound intermediate frequency signal output interfaces.
Fig. 4 is the electrical block diagram of Fig. 1 sound intermediate frequency signal output interfaces.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.Elaborate many details in order to abundant in the following description
Understand the utility model.But the utility model can be implemented with being much different from other manner described here, this area
Technical staff can do similar improvement in the case of without prejudice to the utility model intension, therefore the utility model is not by following public affairs
The limitation for the specific implementation opened.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
" right side ", " on ", " under " and similar statement for illustrative purposes only, rather than indicate or implied signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.Term as used herein " and/or " include one or more related Listed Items
Arbitrary and all combination.
First, the utility model is that the understanding of following facts is made based on inventor：
In general, COBBAIF can be divided into digital audio interface and analog audio interface, analog audio interface and wrap
TRS interfaces are included, TRS interfaces are divided into 2.5mm, 3.5mm and 6.3mm according to the size of size, and wherein 3.5mm interface is for we
Generally known earphone interface, general earphone is divided into that three sections, i.e. T portions are at the top of tip, R portions are around portion and S portions in the middle of Ring
For Sleeve bottoms, three sections are respectively adopted metal material, and its every section is separated by plastic hoop, and three sections of earphone connect with earphone respectively
The contact transmission signal of mouth, wherein T portions connect signal positive transmission left channel audio signal, R portions and connect the negative transmission R channel of signal
Audio signal, S portions earth terminal, the S portions of wherein earphone are a diameter of 3.5mm of bottom.
Digital audio interface includes optical fiber interface, and Optical fiber plug has two kinds of standards, and one kind is standard square toes, one kind be with
The similar round end of 3.5mm headset plugs, optical fiber is generally the fiber that glass or plastics are made, and light can occur inside optical fiber
Full transmitting, to transmit optical signal, in optical fiber interface output digital audio and video signals, audio control chip is believed according to DAB
Number digital pulse signal is sent, send optical signal through photodiode, optical signal is output to digital sound by signal output pin
In frequency equipment transmission line, optical fiber interface also includes grounding pin and power supply pin.
It refer to Fig. 1, the mainboard 10 that an embodiment of the present utility model is provided, including audio signal output interface 20, control
Circuit 30 processed, analogue audio frequency output circuit 40 and DAB output circuit 50, audio signal output interface 20 include first
Class pin 21, Equations of The Second Kind pin 22, the 3rd class pin 23 and the 4th class pin 24, control circuit 30 are defeated with analogue audio frequency respectively
Go out circuit 40, the class pin 23 of DAB output circuit 50 and the 3rd to connect, analogue audio frequency output circuit 40 draws with the first kind
Pin 21 is connected, and DAB output circuit 50 is connected with Equations of The Second Kind pin 22.
Refer to the first kind in Fig. 1 to Fig. 4, the audio signal output interface 20 that an embodiment of the present utility model is provided
Pin 21, Equations of The Second Kind pin 22 and the one end of the 3rd class pin 23 are in multiple accepting grooves that main body 200 is provided with, and the first kind is drawn
Pin 21 includes the first pin 211, the pin 213 of second pin 212 and the 3rd, and Equations of The Second Kind pin 22 includes the 4th pin 221, the
Five pins 222 and the 6th pin 223, the 3rd class pin 23 include the first detection detection pin 232 of pin 231 and second, the
Four class pins 24 include the 7th pin 241 and the 8th pin 242, when not there is input equipment incoming audio signal output interface 20
When, the original levels of the 3rd class pin 23 being connected with control circuit 30 are high level, i.e., the first detection pin 231 and second is examined
The original levels for surveying pin 232 are high level；When there is input equipment incoming audio signal output interface 20, the first detection pin
231 level are changed into low level from high level, when control circuit 30 detects the change of the level of the first detection pin 231, control circuit
30 control analogue audio frequency output circuits 40 or DAB output circuit 50 are exported from first kind pin 21 or Equations of The Second Kind pin 22
Audio signal, when input equipment is earphone terminal, the T portions of its earphone are that top is in contact with the second detection pin 232, and ear
It is metal material at the top of machine so that the second detection conducting ground connection of pin 232, the second detection level of pin 232 is changed into from high level
Low level, when controlling circuit 30 to detect the change of the level of the second detection pin 232, control analogue audio frequency output circuit 40 is from the
One class pin 21 export simulated audio signal, wherein the first pin 211 respectively with the ground and ear in analogue audio frequency output circuit 40
The S portions connection of machine, second pin 212 respectively with the left channel signals output circuit in analogue audio frequency output circuit 40 and earphone
T portions are connected, and the 3rd pin 213 connects with the right-channel signals output circuit of analogue audio frequency output circuit 40 and the R portions of earphone respectively
Connect；When input equipment is optical fiber, be in contact with the second detection pin 232 at the top of its optical fiber, but optical fiber material be glass or
Plastics, it is impossible to conductive so that circuit is not turned at the second detection pin 232, the second detection pin 232 level is always to be initial high
Level keeps constant, now controls the control DAB of circuit 30 output circuit 50 from the output DAB letter of Equations of The Second Kind pin 22
Number, wherein the 4th pin 221 is connected with the signal output apparatus in DAB output circuit 50, the 5th pin 222 and numeral
Power supply circuit connection in audio output circuit 50, the 6th pin 223 is connected with the ground in DAB circuit 50；4th class is drawn
The 7th pin 241 and the 8th pin 242 in pin 24 are connected with the ground in mainboard 10 respectively.
Audio signal output interface 20 also includes main body 200, and the inside of main body 200 is provided with accommodation space, the front end of main body 200
Provided with a jack 201, jack 201 is a diameter of 3.7mm circular hole, and jack 201 is connected with accommodation space, in the present embodiment
In Fig. 2, the right side of main body 200 is respectively equipped with the first pin 211, the 7th pin from jack 201 to the end away from jack 201
241 and second pin 212, the opposite side of main body 200 from the end away from jack 201 to jack 201 at, be respectively equipped with the 3rd
The detection of pin 213, second pin 232, the 8th pin 242 and the first detection pin 231, wherein the first pin 211 and first
Pin 231 is detected just to setting, the 7th pin 241 and the 8th pin 242 are just to setting, the pin 213 of second pin 212 and the 3rd
Just to setting, side of the main body 200 away from jack 201 is respectively equipped with the 4th from second pin 212 to the direction of the 3rd pin 213
Pin 221, the 5th pin 222 and the 6th pin 223.
7th pin 241 and the 8th pin 242 are outside the two side of main body, and main body 200 also includes a sheet metal
250, sheet metal 250 is substantially in " n " shape, and sheet metal 250 includes the first vertical component effect 251, the second vertical component effect 252 and horizontal part
253, wherein, the first vertical component effect 251 and the second vertical component effect 252 are oppositely arranged, the horizontal part 253 respectively with first vertical component effect
251st, the second vertical component effect 252 is connected, and the 7th pin 241 and the 8th pin 242 are respectively arranged on the first vertical component effect 251, second
Side of the vertical component effect 252 away from horizontal part 253, first vertical component effect 251, the centre position of the second vertical component effect 252 are respectively equipped with shape
Shape is square first through hole 254, the second through hole 255, and main body 200 is corresponding with the first through hole 254, the second through hole 255
The first projection 202, the second projection 203 are respectively equipped with two side, wherein the first projection 202, the second projection 203 are born against
The first through hole 254, the second through hole 255 are close to the inner edge of the 7th pin 241, the 8th pin 242, first projection 202, second
Projection 203 is used to fix the sheet metal 250 so that the firm outer wall for being stuck in main body 200 of the sheet metal 250, and the 7th pin 241
The audio signal output interface 20 is set more to be stably fixed on mainboard 10 with the 8th pin 242.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of audio signal output interface, applied in mainboard, it is characterised in that the audio signal output interface includes：
First kind pin, is connected with the analogue audio frequency output circuit on the mainboard；
Equations of The Second Kind pin, is connected with the DAB output circuit on the mainboard；
3rd class pin, is connected with the control circuit on the mainboard, and the 3rd class pin at least includes the first detection pin
With the second detection pin；
The control circuit is connected with the analogue audio frequency output circuit and the DAB output circuit respectively, when insertion ear
The generator terminal period of the day from 11 p.m. to 1 a.m, the first detection pin and the second detection pin are changed into low level, the control circuit by high level
The analogue audio frequency output circuit is controlled from the first kind pin exports audio signal；When insertion optic fibre connector, described first
Detect that one of holding high level is constant in pin and the second detection pin, another is changed into low level from high level, described
Circuit is controlled to control the DAB output circuit from the Equations of The Second Kind pin exports audio signal.
2. audio signal output interface according to claim 1, it is characterised in that the first kind pin draws including first
Pin, second pin and the 3rd pin, the first pin ground connection, the second pin connect the analogue audio frequency output circuit
In left channel signals output circuit, the 3rd pin connects the right-channel signals output in the analogue audio frequency output circuit
Circuit.
3. audio signal output interface according to claim 2, it is characterised in that the Equations of The Second Kind pin draws including the 4th
Pin, the 5th pin and the 6th pin, the 4th pin connect the signal output apparatus in the DAB output circuit,
5th pin connects the power supply circuit in the DAB output circuit, the 6th pin ground connection.
4. audio signal output interface according to claim 3, it is characterised in that the audio signal output interface is also wrapped
The 4th class pin is included, the 4th class pin includes the 7th pin and the 8th pin, and the 7th pin and the 8th pin connect
Ground.
5. audio signal output interface according to claim 4, it is characterised in that the audio signal output interface is also wrapped
A main body is included, the body front end is provided with the jack connected with the body interior.
6. audio signal output interface according to claim 5, it is characterised in that first pin, second pin with
And the 7th pin be located at the side of the main body, the 3rd pin, the first detection pin, the second detection pin and the 8th draw
Pin is located at the opposite side of the main body, and the 4th pin, the 5th pin and the 6th pin are located at the bottom of the main body.
7. audio signal output interface according to claim 5, it is characterised in that first pin draws with the first detection
Pin, the second pin are with the 3rd pin and the 7th pin and the 8th pin respectively just to setting.
8. audio signal output interface according to claim 5, it is characterised in that the main body also includes a sheet metal,
The sheet metal includes two vertical component effects being oppositely arranged and the horizontal part for connecting two vertical component effects, the 7th pin
Two sides of the vertical component effect away from the horizontal part are respectively arranged on the 8th pin.
9. a kind of mainboard, it is characterised in that the mainboard includes the audio signal output described in claim 1 to 8 any one
Interface, the mainboard includes control circuit, analogue audio frequency output circuit and DAB output circuit, and the analogue audio frequency is defeated
The first kind pin for going out circuit with the audio signal output interface is connected, and the DAB output circuit is believed with the audio
The Equations of The Second Kind pin connection of number output interface, the control circuit respectively with the analogue audio frequency output circuit, the digital sound
The 3rd class pin connection of frequency output circuit and the audio signal output interface.
10. a kind of electronic equipment, it is characterised in that the electronic equipment includes the mainboard described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720283481.0U CN206559623U (en) | 2017-03-22 | 2017-03-22 | Audio signal output interface, mainboard and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720283481.0U CN206559623U (en) | 2017-03-22 | 2017-03-22 | Audio signal output interface, mainboard and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206559623U true CN206559623U (en) | 2017-10-13 |
Family
ID=60364598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720283481.0U Active CN206559623U (en) | 2017-03-22 | 2017-03-22 | Audio signal output interface, mainboard and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206559623U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182160A (en) * | 2017-12-28 | 2018-06-19 | 北京守朴科技有限公司 | General-purpose interface input signal automatic identifying method, device and signal handling equipment |
| CN111698614A (en) * | 2020-05-25 | 2020-09-22 | 歌尔光学科技有限公司 | Audio output circuit and electronic equipment |
| WO2020257975A1 (en) * | 2019-06-24 | 2020-12-30 | 深圳市大疆创新科技有限公司 | Multimedia playback device and control method therefor, and computer storage medium |
-
2017
- 2017-03-22 CN CN201720283481.0U patent/CN206559623U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182160A (en) * | 2017-12-28 | 2018-06-19 | 北京守朴科技有限公司 | General-purpose interface input signal automatic identifying method, device and signal handling equipment |
| WO2020257975A1 (en) * | 2019-06-24 | 2020-12-30 | 深圳市大疆创新科技有限公司 | Multimedia playback device and control method therefor, and computer storage medium |
| CN111698614A (en) * | 2020-05-25 | 2020-09-22 | 歌尔光学科技有限公司 | Audio output circuit and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206559623U (en) | Audio signal output interface, mainboard and electronic equipment | |
| KR102609515B1 (en) | Connector apparatus and display apparatus having thereof | |
| CN105848028B (en) | Earphone for charging for audio frequency apparatus and be audio frequency apparatus charging method | |
| CN207083202U (en) | A kind of TYPE C chargings earphone | |
| US20180249114A1 (en) | Television main board apparatus and television system | |
| US20180241962A1 (en) | Television main board apparatus, television and television system | |
| CN201440468U (en) | HDMI connector | |
| CN109274958A (en) | A kind of STB audio frequency and video multichannel automatic switchover testing cassete | |
| CN205622814U (en) | Digit earphone connecting line | |
| CN101577045A (en) | Intelligent remote control audio receiving method and system thereof | |
| CN205283774U (en) | K song headset of handheld microphone in area | |
| EP3131287B1 (en) | Television | |
| CN208044846U (en) | Fiber optic conduction line | |
| CN207560194U (en) | USB is multiplexed connector and television set | |
| CN104038797B (en) | Network machine top box with loud speaker and video deconcentrator function | |
| CN203326320U (en) | Adapter | |
| CN208462058U (en) | Bluetooth transmitters | |
| CN202121145U (en) | Multi-media connector | |
| CN202260050U (en) | High-definition digital signal quick-connection system | |
| CN206147589U (en) | Audio playback equipment and because audio frequency control circuit of desktop optical drive | |
| CN205017741U (en) | Electronic device protection shell | |
| CN206323475U (en) | Video and audio equipment | |
| CN204439879U (en) | A kind of joints of optical fibre and relevant device thereof | |
| CN206850990U (en) | A kind of earphone conversion head with USB plug | |
| CN203708428U (en) | Multifunctional earphone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |