CN108650438A - Digital TV front-end host and digital signal converting system - Google Patents
Digital TV front-end host and digital signal converting system Download PDFInfo
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- CN108650438A CN108650438A CN201810737143.9A CN201810737143A CN108650438A CN 108650438 A CN108650438 A CN 108650438A CN 201810737143 A CN201810737143 A CN 201810737143A CN 108650438 A CN108650438 A CN 108650438A
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- 230000006855 networking Effects 0.000 claims description 13
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- 238000005516 engineering process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
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- Television Signal Processing For Recording (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The application provides a kind of digital TV front-end host, including mainboard and casing, and signal management circuit, audio video transmission circuit, control telecommunication circuit and expansion interface are laid on mainboard；Further include several function plates for being correspondingly connected with expansion interface and being detachably connected host card slot, function plate includes that several corresponding input package plates for receiving different signal source and being packaged into IP streaming media signals and the output for corresponding output different signal source parse plate, and signal management circuit, audio video transmission circuit are further connect with control telecommunication circuit.The application provides a kind of digital TV front-end host that can customize function plate function as needed, it is integrated with multiple card slots for being clamped function plate, function plate accesses card slot and connects expansion interface can Auto-matching digital TV front-end host, convenient for being managed collectively and connecting up, and different types of input digital signal can be received, is desired signal form by encapsulating and parsing operation output.
Description
Technical field
The invention belongs to technical field of electronic communication, and in particular to a kind of digital TV front-end host and digital signal conversion
System.
Background technology
Existing domestic and international digital TV front-end signal program source has：HDMI high-definition signals, CVBS standard definition signals, IP electricity
Depending on signal, the satellite TV signal of DVB-S/S2, ASI signals, scrambled signals, DVBT/T2 TV signals, DTMB TV signals,
ATSC TV signals, DVBC (J.83A) TV signal, DVBC (J.83B) TV signal, ISDB-T TV signals etc..Existing state
Inside and outside digital TV front-end signal output has：Internet Protocol Television signal, DVBT/T2 TV signals, DTMB TV signals, ATSC TVs letter
Number, DVBC (J.83A) TV signal, DVBC (J.83B) TV signal, ISDB-T TV signals etc..It can be seen that with number
The development of TV is universal, and multiple digital television aspect simultaneously deposits the trend for having become digital television techniques development, due to input
And the digital television signal type of output is various, is unfavorable for being managed collectively and extend, and existing digital TV front-end host is past
Past to there are problems that being not easy wiring and space hold since connecting line is lengthy and jumbled, this is just to being capable of providing a variety of reception interpretive models
And television headend host simple in structure proposes urgent demand.
Invention content
In order to solve the above technical problems, the present invention provides a kind of digital TV front-end host, including mainboard, casing, it is main
Signal management circuit, audio video transmission circuit, control telecommunication circuit and expansion interface are laid on plate；Further include several clamping masters
The function plate of machine, function plate include several corresponding input packages for receiving different signal source and being packaged into a certain signal format
Plate and output for corresponding output different signal source parse plate, signal management circuit, audio video transmission circuit further with
Control telecommunication circuit connection.
Preferably, input package plate includes signal receiving processing module, signal assemble module and the first data processing mould
Block, input signal are separately connected the first data processing module, input package by signal receiving processing module, signal assemble module
It is equipped with the digital signal reception seat of several connection signal receiving processing modules on the outside of plate, is equipped on the inside of input package plate for connecting
The connecting seat of Host Extensions interface.
Preferably, signal management circuit be 100,000,000 lattice networks, the first data processing module by 100,000,000 network interfaces with
Signal management circuit be connected, audio video transmission circuit be gigabit networking circuit, signal assemble module by gigabit networking interface with
Audio video transmission circuit is connected.
Preferably, it is provided at signal output processing module, signal resolution module and the second data on output parsing plate
Module is managed, output signal is separately connected the second data processing module by signal output processing module, signal resolution module, exports
The digital signal output seat for being equipped with several connection signal output processing modules on the outside of plate is parsed, is equipped with and is used on the inside of output parsing plate
Connect the connecting seat of Host Extensions interface.
Preferably, signal management circuit be 100,000,000 lattice networks, the second data processing module by 100,000,000 network interfaces with
Signal management circuit be connected, audio video transmission circuit be gigabit networking circuit, signal resolution module by gigabit networking interface with
Audio video transmission circuit is connected.
Preferably, input package plate is used to each road input signal source being packaged into standard IP streaming media signals, input signal
Source includes any one or two kinds of or more the combination input form of HDMI, CVBS, DTMB, DVBC, ASI or ISDB.
Preferably, output parsing plate be used for by single signal source decoding output be include DVB, DTMB, ATSC, DVBC,
Any signal output form including ISDB.
Preferably, host includes top plate and bottom plate, side plate, panel and backboard, and mainboard is arranged on the inside of backboard, and function is inserted
It is correspondingly connected with mainboard expansion interface on the inside of plate and is removably connected to host panel in outside.
Preferably, several cooling fan blades are fixedly installed inside host, function plate is equipped with for being adapted to fan blade height
And the trepanning of width, cooling fan blade are mounted in the accommodating space that open-porous layout is formed.
Preferably, top plate and bottom plate are correspondingly provided with the sliding rail for slidable connection function plate, function plate respectively to
Top plate and bottom plate extend the limit raised line of an adaptation sliding rail so that function plate can be clamped sliding rail and edge by limiting raised line
Slide direction is free to slide.
The present invention also provides a kind of digital signal converting systems, further include mobile electronic device and the ends PC, control communication electricity
Road further comprises a WiFi module that control host conversion operation is connected for mobile electronic device, and the ends PC pass through signal management
Circuit connects host.
The present invention provides a kind of digital TV front-end host and digital signal converting systems, and caused advantageous effect is such as
Under：
1. host is integrated with multiple card slots for being clamped function plate, function plate access card slot simultaneously connects expansion interface
Can Auto-matching digital TV front-end host, convenient for unified management and wiring.
2. the type of digital television signal is with regard to numerous at home, the modulation standard in country variant or area also thousand poor ten thousand
Not, the application provides a kind of digital TV front-end host that can customize function plate function as needed, can receive difference
The input digital signal of type, and be desired signal form by encapsulating and parsing operation output so that this digital TV front-end
Host can receive the digital television signal of country variant, and the signal source docking for being converted to form needed for the country one belongs to is televised
Device.
3. different types of input signal can be packaged into unified streaming media signal format, output solution by input package plate
The signal that streaming media signal on host United Dispatching to output parsing plate can be converted into target type by analysis plate exports, defeated
Enter package board and output parsing plate is linked into the signal management circuit of digital TV front-end host by expansion interface and sound regards
Frequency transmission circuit, wherein audio video transmission circuit parse the biography of streaming media signal between plate for realizing input package plate and output
Defeated, signal management circuit is used to call different inputs to seal according to inflow signal Source Type and required signal source output type management
Loading board or different output parse plate.By audio video transmission circuit and signal management circuit, input can be realized as needed
The selection of signal and output signal and free switching.
4. signal management circuit is 100,000,000 lattice networks, audio video transmission circuit is gigabit networking circuit, and 100,000,000 exchange electricity
Road is used to call as management software, cell phone application software management capability plate and the channel of read-write, and gigabit switched circuit is for making
For the channel of audio, video data transmission, two channel separations make the data of management passage do not interfere with transmission of flow media data and
Phenomena such as causing video not smooth or interim card.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the dimensional structure diagram of digital TV front-end host；
Fig. 2 is the electrical block diagram of digital TV front-end host；
Fig. 3 is the electrical block diagram of input package plate；
Fig. 4 is the electrical block diagram of output parsing plate；
Fig. 5 is the internal structure schematic diagram of digital TV front-end host；
Fig. 6 is the structural schematic diagram of the input package plate of digital TV front-end host.
1：Mainboard；2：Function plate；21：Input package plate；22：Output parsing plate；3：Backboard；4：Sliding rail；5：Limit convex
Item；6：Cool down fan blade；7：Clamping item.
Specific implementation mode
Embodiment 1：
Universal with the development of DTV, multiple digital television aspect simultaneously deposits and has become digital television techniques development
Trend be unfavorable for being managed collectively and extend, and existing number since the digital television signal type for inputting and exporting is various
There is being not easy wiring and space hold in television headend host, this is just more to being capable of providing often due to connecting line is lengthy and jumbled
Kind receives interpretive model and television headend host simple in structure proposes urgent demand.
Existing domestic and international digital TV front-end signal program source has：HDMI high-definition signals, CVBS standard definition signals, IP electricity
Depending on signal, the satellite TV signal of DVB-S/S2, ASI signals, scrambled signals, DVBT/T2 TV signals, DTMB TV signals,
ATSC TV signals, DVBC (J.83A) TV signal, DVBC (J.83B) TV signal, ISDB-T TV signals etc..Existing state
Inside and outside digital TV front-end signal output has：Internet Protocol Television signal, DVBT/T2 TV signals, DTMB TV signals, ATSC TVs letter
Number, DVBC (J.83A) TV signal, DVBC (J.83B) TV signal, ISDB-T TV signals etc..DTV is believed at home
Number type with regard to numerous, the modulation standard in country variant or area is also multifarious, and for the above situation, the application provides
A kind of digital TV front-end host that can customize function plate function as needed, as shown in Figure 1, including mainboard 1, casing,
Signal management circuit, audio video transmission circuit, control telecommunication circuit and expansion interface are laid on mainboard 1；Further include several cards
It is connected to the function plate 2 of host card slot, function plate 2 includes several corresponding reception different signal sources and is packaged into a certain signal lattice
The input package plate 21 of formula and the output that different signal source is exported for correspondence parse plate 22, and expansion interface includes signal management
Circuit interface, audio video transmission interface, input package plate 21 and output parsing plate 22 are connected to signal by Host Extensions interface
Manage circuit, audio video transmission circuit, signal management circuit, audio video transmission circuit and input package plate 21 further with control
Telecommunication circuit connects.On the one hand a kind of digital TV front-end host provided by the present application can receive various forms of number electricity
Depending on signal, and the signal source of form needed for location is converted to dock local television display device；On the other hand, host is laid
There are card slot, input package plate 21 to have access to card slot Auto-matching digital TV front-end host, consequently facilitating host unified management,
And rationalize main machine structure without wiring inside host.In addition, function plate can also include electric socket, electric socket
Mainboard, input package plate, output parsing plate are connected, for powering to host and function plate.
Specifically, as shown in figure 3, be provided on input package plate 21 signal receiving processing module, signal assemble module with
And first data processing module, input signal are separately connected the first data by signal receiving processing module, signal assemble module
Processing module, digital television signal flow into a certain input package plate 21, are received by signal receiving processing module and by signal assemble
Module is packaged into IP streaming media signals, and the information and processing parameter of input signal can be read and write by the first data processing module.
In the present embodiment, input package plate 21 is used to each road input signal source being packaged into standard IP streaming media signals, input signal source
Including any one or two kinds of or more the combination input form of HDMI, CVBS, DTMB, DVBC, ASI or ISDB.
Specifically, as shown in Figure 4 output parsing plate 22 on be provided with signal output processing module, signal resolution module and
Second data processing module, output signal are separately connected by signal output processing module, signal resolution module at the second data
Module is managed, after the IP streaming media signals after encapsulation are received by a certain output parsing plate 22, is resolved to required audiovisual digital letter
Number with adaptation access television display device, the information and processing parameter of output signal can be read by the second data processing module
It writes.Output parsing plate 22 is used to the decoding output of single signal source be appointing including DVB, DTMB, ATSC, DVBC, ISDB
A kind of signal output form.Input package plate and 22 outside of output parsing plate are equipped with multiple digital data transmission seats, transmission base packet
It includes mounted on input package seat for receiving the received block that digital signal enters host, and the use mounted on output parsing seat
In the output seat of transmission digital signal to television display device, 2 inside of function plate is equipped with for connecting Host Extensions interface
Connecting seat, transmission base include Building F, HDMI etc..Choice of main machine HDMI is used as signal input interface in the present embodiment, for more
Road high-definition signal input, can also select Building F as multiple-link satellite signal, multichannel wired TV coaxial signal input interface, or
It is the output interface of multichannel wired TV coaxial signal.
As shown in Figure 3-4, it is rational configuration and advanced optimizes host performance, signal management circuit is 100,000,000 networks electricity
Road, first data processing module and the second data processing module are separately connected signal management electricity by 100,000,000 network interfaces
Road, the audio video transmission circuit are gigabit networking circuit, and the signal assemble module and signal resolution module pass through kilomega network
Network interface is separately connected audio video transmission circuit.Therefore, in the present embodiment 100,000,000 switched circuits be used as management software,
Cell phone application software management capability plate calls and the channel of read-write, what gigabit switched circuit was used to transmit as audio, video data
Channel, two channel separations make the data of management passage not interfere with transmission of flow media data and cause video not smooth or block
Phenomena such as pausing.
In conjunction with shown in Fig. 1-4, host has been built and 2 one-to-one expansion interface of feature capability plate, expansion interface packet
Contain and has exchanged communication port, function plate 2 to the channel of the power supply of function plate 2, with the 100000000 of 2 relevant parameter of management function plate
Between audio-video signal output with receive gigabit interchange channel.Different types of input signal can be packaged by input package plate
Unified streaming media signal format, output parsing plate can be by the streaming media signals on host United Dispatching to output parsing plate
It is converted into the signal output of target type, before input package plate and output parsing plate are linked into DTV by expansion interface
The signal management circuit and audio video transmission circuit of end main frame, wherein audio video transmission circuit pass through gigabit networking and input package
The gigabit networking of plate and output parsing plate interface connection, input package plate and output parsing plate interface is connect with streaming media signal again
Together, for realizing the transmission of streaming media signal between input package plate and output parsing plate, signal management circuit is used for basis
It flows into signal Source Type and required signal source output type management calls different input package plates or different output to parse plate.
By audio video transmission circuit and signal management circuit, can realize as needed input signal and output signal selection and from
By switching.
Specifically, when it is artificial selected receive a certain digital signal when, host will receive dependent instruction, and by the digital signal
Specific input package plate is selected to be packaged into streaming media signal, when a certain input package plate exports Streaming Media by way of multicast
Signal is transferred to audio video transmission circuit to expansion interface, then by gigabit networking, since audio video transmission circuit selects gigabit
Switched circuit forms LAN and to connect the streaming media signal that output parsing plate on other interfaces also can all have multicast,
Streaming media signal can be parsed into the digital television signal program of required form by output parsing plate as needed.Wherein, multicast
Technology is a kind of network with multicast-capable of structure in fact, allows router that data packet is disposably copied to multiple channels
On.Using multicast mode, single server can send continuous data stream and no-delay simultaneously to hundreds of thousands platform client computer.Media
Server only needs to send a packet；All clients for sending out request share same packet so that information can be sent out
Be sent to the client of arbitrary address, so as to reduce transmission over networks packet total amount, improve network utilization ratio, drop
Low cost.Since multicast overcomes the weakness of unicast and broadcast transmission mode, both will not duplicate packet multiple copies transmission
Onto network, it will not deliver a packet to and not need those of it client, ensure that multimedia application occupies net on network
The minimum bandwidth of network.
When following table lists digital television signal in host receiving country, one of function plate setting embodiment,
In other embodiments, function plate can select one such or a variety of combination (such as domestic modulated signal as needed
Change, can customize and select corresponding function plate), way can be customized according to requirement of the client to signal quality.
If client needs to receive foreign digital TV signal at home, correspondingly, host can be inserted into as needed can
The input package plate of the corresponding digital television signal of encapsulation, following table are at home in use, needing the outer digital television signal of receiving country
One of the embodiment of institute's access function plate.
| Type | Input/output | Function | Signal country origin |
| HDMI | Input | HDMI signal assembles are IP streaming media signals | Domestic common signal |
| Satellite | Input | Satellite-signal is encapsulated as IP streaming media signals | Domestic common signal |
| ATSC | Input | ATSC signal assembles are IP streaming media signals | External common signal |
| ASI | Input | ASI signal assembles are IP streaming media signals | External common signal |
| DVBT | Output | IP streaming media signals resolve to DVBT signals | Domestic common signal |
| DTMB | Output | IP streaming media signals resolve to DTMB signals | Domestic common signal |
In other embodiments, the foreign signal source customization that the type of input package plate can receive as needed.
Embodiment 2：
Further to rationalize main machine structure, before the present embodiment provides a kind of DTV on the basis of embodiment 1
End main frame, as shown in Figure 1,5, including top plate and bottom plate, side plate and backboard 3, the setting of mainboard 1 is in 3 inside of backboard, the function
Plate 2 is slidably coupled to host and is detachably connected host mainboard 1.In the present embodiment, top plate and bottom plate are correspondingly provided with and are used for
The sliding rail 4 of slidable connection function plate, function plate 2 extend the limit convex of an adaptation sliding rail 4 to top plate and bottom plate respectively
Item 5 so that function plate 2 can be by limit raised line 5 clamping sliding rail 4 and free to slide along 4 direction of sliding rail.Top plate sliding rail 4 into
One step is equipped with a soft arch clamping item 7, and at default grafting position, clamping item 7 engages and lead to function plate 2 function plate 2
Cross deformation clamping function plate in the vertical direction.
As seen in figs. 5-6, several cooling fan blades 6, input package plate 21 and output parsing plate are fixedly installed inside host
22 are equipped with the trepanning for being adapted to fan blade height and width, and cooling fan blade 6 is mounted in the accommodating space that open-porous layout is formed.This
In embodiment, cooling fan blade 6 is fixedly connected on host top plate, input package plate 21 and output parsing plate 22 in 1 side of nearly mainboard
A rectangle trepanning is equipped with above the connection position of mainboard 1, the height and width of trepanning are matched with fan blade, due to input package plate
21 are connected to host with the unified arrangement of output parsing plate 22, therefore trepanning forms an appearance for installing cooling fan blade 6 through arrangement
Between emptying, and the fan blade 6 that cools down is located at the top of plate and 1 link position of mainboard, and in normal work, cooling fan blade 6 can be made
Wind takes away the remaining heat contained in junction, avoids circuit overheat and host consume.To further increase cooling-down effect, in the present embodiment
Cooling 6 offside bottom plate of fan blade is provided between several ventilation holes and plate and not close arrangement, plate are separated by 1- between any two
2cm accelerates cooling for forming cross-ventilation and air duct inside host when fan blade is opened.
Embodiment 3：
On the basis of embodiment 1, the present embodiment further provides a kind of signal translating system, including before DTV
End main frame, further includes mobile electronic device and the ends PC, and the control telecommunication circuit further comprises one for mobile electronic device
The WiFi module of connection control host conversion operation, the ends PC connect host by signal management circuit.
Digital TV front-end host provided by the present invention and digital signal converting system are described in detail above,
Principle and implementation of the present invention are described for specific case used herein, and the explanation of above example is only used
Understand core of the invention thought in help；It is according to the thought of the present invention and square meanwhile for those of ordinary skill in the art
Method, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as pair
The limitation of the present invention.
Claims (10)
1. a kind of digital TV front-end host, which is characterized in that including mainboard and casing, signal management electricity is laid on mainboard
Road, audio video transmission circuit, control telecommunication circuit and expansion interface；Further include several being correspondingly connected with expansion interface and detachably connecting
The function plate of host card slot is connect, function plate includes several corresponding reception different signal sources and is packaged into IP streaming media signals
Input package plate and the output that different signal source is exported for correspondence parse plate, signal management circuit, audio video transmission circuit
Further it is connect with control telecommunication circuit.
2. digital TV front-end host as described in claim 1, which is characterized in that the input package plate includes that signal receives
Processing module, signal assemble module and the first data processing module, input signal are sealed by signal receiving processing module, signal
Die-filling piece is separately connected the first data processing module, and the number of several connection signal receiving processing modules is equipped on the outside of input package plate
Word signal received block, input package plate inside are equipped with the connecting seat for connecting Host Extensions interface.
3. digital TV front-end host as claimed in claim 2, which is characterized in that the signal management circuit is 100,000,000 networks
Circuit, the first data processing module are connected by 100,000,000 network interfaces with signal management circuit, and the audio video transmission circuit is
Gigabit networking circuit, the signal assemble module are connected by gigabit networking interface with audio video transmission circuit.
4. digital TV front-end host as described in claim 1, which is characterized in that be provided with signal on the output parsing plate
Output processing module, signal resolution module and the second data processing module, output signal pass through signal output processing module, letter
Number parsing module is separately connected the second data processing module, and several connection signal output processing modules are equipped on the outside of output parsing plate
Digital signal export seat, be equipped with connecting seat for connecting Host Extensions interface on the inside of output parsing plate.
5. digital TV front-end host as claimed in claim 4, which is characterized in that the signal management circuit is 100,000,000 networks
Circuit, second data processing module are connected by 100,000,000 network interfaces with signal management circuit, the audio video transmission electricity
Road is gigabit networking circuit, and the signal resolution module is connected by gigabit networking interface with audio video transmission circuit.
6. digital TV front-end host as described in claim 1, which is characterized in that the input package plate is used for each road is defeated
Enter signal source and be packaged into standard IP streaming media signals, input signal source includes that HDMI, CVBS, DTMB, DVBC, ASI or ISDB appoint
One or two kinds of or more combination input forms.
7. digital TV front-end host as described in claim 1, which is characterized in that the output parsing plate is used for single letter
The decoding output of number source is any signal output form including DVB, DTMB, ATSC, DVBC, ISDB.
8. digital TV front-end host as described in claim 1, which is characterized in that the host includes top plate and bottom plate, side
Plate, panel and backboard, mainboard are arranged on the inside of backboard, and the host card slot is to be correspondingly arranged that be useful for can in top plate and bottom plate
The sliding rail of the function that is slidably connected plate, sliding rail laid out in parallel are simultaneously extended, the function plate point from host panel to backboard direction
The limit raised line of an adaptation sliding rail is not extended to top plate and bottom plate so that function plate can be clamped sliding rail by limiting raised line
And it is free to slide along slide direction.
9. digital TV front-end host as claimed in claim 8, which is characterized in that if being fixedly installed inside the host
Dry cooling fan blade, the function plate are equipped with the trepanning for being adapted to fan blade height and width, and cooling fan blade is arranged mounted on trepanning
In the accommodating space that cloth is formed.
10. such as claim 1-9 any one of them digital signal converting systems, which is characterized in that further include that mobile electron is set
The standby and ends PC, the control telecommunication circuit further comprise that one connects control host conversion operation for mobile electronic device
WiFi module, the ends PC connect host by signal management circuit.
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| CN201810737143.9A CN108650438B (en) | 2018-07-06 | 2018-07-06 | Digital television front-end host and digital signal conversion system |
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| CN201810737143.9A CN108650438B (en) | 2018-07-06 | 2018-07-06 | Digital television front-end host and digital signal conversion system |
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| CN108650438B CN108650438B (en) | 2024-05-24 |
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| CN108650438B (en) | 2024-05-24 |
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Address after: 518000, Building 501, No. 2, No. 89 Hengping Road, Bao'an Community, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Dingshengwei Integrated Technology Development Co.,Ltd. Country or region after: China Address before: 518100 Floor 1-3, Building A, Guanlong Village, Xili Town, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Dingshengwei Electronics Co.,Ltd. Country or region before: China |