CN209330135U - Data transmission device, equipment, system and data sink, equipment - Google Patents
Data transmission device, equipment, system and data sink, equipment Download PDFInfo
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- CN209330135U CN209330135U CN201920126582.6U CN201920126582U CN209330135U CN 209330135 U CN209330135 U CN 209330135U CN 201920126582 U CN201920126582 U CN 201920126582U CN 209330135 U CN209330135 U CN 209330135U
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
Abstract
The utility model discloses a kind of data transmission devices, including the first network card interface, the first audio-video to turn AVT interface chip and first network transformer；Be provided in first network card interface third pin pair and for realizing Ethernet data transmit the first pin to and second pin pair；Wherein, the first network transformer connects first pin pair and the second pin；Two pins of the third pin pair are separately connected first audio-video and turn AVT interface chip.The invention also discloses a kind of data transmission set, system and data sink, equipment, it is able to achieve and powers in a cable simultaneous transmission audio-video, Ethernet data and POE.
Description
Technical field
The utility model relates to network technique fields, more particularly to a kind of data transmission device, equipment, system and data
Reception device, equipment.
Background technique
The transmission of Ethernet data between distinct device may be implemented in network card interface, and the equipment with network card interface can lead to
It crosses and accesses cable in network card interface to be connected in Ethernet, to realize the transmitting-receiving of Ethernet data.Common cable, such as
Surpass five class network lines with 4 pairs of twisted pairs, that is, there are 8 cores, eight respectively corresponded in network card interface (such as RJ45 network interface) draw
Foot.
In currently existing scheme, main (1,2,3, the 6) core using in cable transmits Ethernet data；When utilization POE skill
Art then needs to occupy (1,2,3,6) core or (4,5,7,8) core to being powered by terminal equipment.If it is desired in same root net
Line simultaneous transmission audio-video, Ethernet data and POE power supply, then original scheme cannot can meet simultaneously, need additional line
Cable and interface will lead to number of cables increase in this way, and interface increases, construction difficult wiring etc..
Utility model content
The utility model embodiment proposes a kind of data transmission device, equipment, system and data sink, equipment,
It is able to achieve and powers in a cable simultaneous transmission audio-video, Ethernet data and POE.
The utility model embodiment provides a kind of data transmission device, including the first network card interface, the first audio-video turn
AVT interface chip and first network transformer；Be provided in first network card interface third pin pair and for realizing
Ethernet data transmit the first pin to and second pin pair；Wherein, the first network transformer connects first pin
Pair and the second pin；Two pins of the third pin pair are separately connected first audio-video and turn AVT interface core
Piece.
Preferably, the data transmission device further includes that the second audio-video turns AVT interface chip, first network card interface
It further include the 4th pin pair, two pins of the 4th pin pair are separately connected second audio-video and turn AVT interface chip.
Preferably, first network card interface is RJ45 interface, and first pin draws to the first of corresponding RJ45 interface
Foot and second pin；The third pin and the 6th pin of the second pin RJ45 interface described correspondence；The third pin
The 4th pin and the 5th pin of the RJ45 interface described correspondence；The 7th of the 4th pin RJ45 interface described correspondence draws
Foot and the 8th pin.
Preferably, first network card interface is RJ45 interface, and first pin draws to the first of corresponding RJ45 interface
Foot and second pin；The third pin and the 6th pin of the second pin RJ45 interface described correspondence；The third pin
The 7th pin and the 8th pin of the RJ45 interface described correspondence；The 4th of the 4th pin RJ45 interface described correspondence draws
Foot and the 5th pin.
The utility model embodiment additionally provides a kind of data transmission set, including audio-video processing chip and as above-mentioned
Data transmission device；There is the audio-video processing chip audio, video data output interface and Ethernet data transmitting-receiving to connect
Mouthful；The audio, video data output interface connects the audio, video data input interface that first audio-video turns AVT interface chip；
The Ethernet data transceiver interface connects first pin pair and second pin pair by the first network transformer.
The utility model embodiment additionally provides a kind of data sink, including the second network card interface, AVT connect warble tone
Video chip and the second network transformer, second network card interface are provided with third pin pair and for realizing Ethernets
Data transmission the first pin to and second pin pair；Wherein, second network transformer connect first pin to
And the second pin pair；The third pin turns audio-video chip to the AVT interface is connected.
Preferably, second network card interface is RJ45 interface, and first pin draws to the first of corresponding RJ45 interface
Foot and second pin；The third pin and the 6th pin of the second pin RJ45 interface described correspondence；The third pin
The 4th pin and the 5th pin of the corresponding RJ45 interface or the third pin correspond to the 7th of the RJ45 interface and draw
Foot and the 8th pin.
Preferably, second network card interface further includes the 4th pin pair, and it is two-way that the AVT interface, which turns audio-video chip,
AVT interface turns audio-video chip；4th pin turns audio-video chip to the two-way AVT interface is connected.
The utility model embodiment additionally provides a kind of data receiver, including such as above-mentioned data sink.
The utility model embodiment additionally provides a kind of data transmission system, including such as above-mentioned data transmission set and
Above-mentioned data receiver；First network card interface of the data transmission device and the second network interface card of the data receiver
Interface is connected by cable.
In said one embodiment, on the one hand, first audio-video, which turns AVT interface chip, can receive external device (ED) transmission
Audio, video data, while being transmitted to third pin pair after the audio, video data is converted to AVT video data, by with it is described
Third pin carries out the transmission of AVT video data to the core of the cable of connection；On the other hand, the Ethernet that external equipment is sent
Data and direct current supply by the first pin to and second pin to being transferred to the first network transformer, then be transferred to by electricity
End, so as to realized simultaneously using a network card interface and cable the transmission of the transmission of audio, video data, Ethernet data with
And POE is by electricity (or power supply).
Detailed description of the invention
It, below will be to attached needed in embodiment in order to illustrate more clearly of the technical solution of the utility model
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram for the data transmission device that the utility model first embodiment provides.
Fig. 2 is the structural schematic diagram for the data sink that the utility model 3rd embodiment provides.
Fig. 3 is the structural schematic diagram for the data transmission system that the 5th embodiment of the utility model provides.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the utility model first embodiment provides a kind of data transmission device 100, including the first network interface card
Interface 110, the first audio-video turn AVT interface chip 120 and first network transformer 130；In first network card interface 110
Be provided with third pin pair and for realizing Ethernet data transmit the first pin to and second pin pair；Wherein, described
One network transformer 130 connects first pin pair and the second pin pair；Two pins of the third pin pair
It is separately connected first audio-video and turns AVT interface chip 120.
In the present embodiment, first network card interface 110 can be RJ45 interface, particularly, for for ethernet nic,
The RJ45 interface of the data terminal equipments type such as router ethernet interface.Wherein, in RJ45 interface to having 4 pairs of pins to (8
Pin), to be connected respectively 4 pairs of twisted pairs (8 cores) of cable.Wherein, mark this 4 pairs of pins to for the first pin pair
(comprising the first pin and second pin), second pin are to (including third pin and the 6th pin), third pin to (comprising the
Four pins and the 5th pin), the 4th pin is to (comprising the 7th pin and the 8th pin).According to current definition, transmission with
Too network data when, the first pin (TX+) for send data+, second pin (TX-) is for sending data-, third pin (RX
+) for receiving data+, the 6th pin (RX+) for receiving data-.And remaining fourth, fifth, seven, eight pins are then not used.
It should be noted that also can define the first pin in the other embodiments of the utility model and draw to comprising third
Foot and the 6th pin, to comprising the first pin and second pin, third pin draws second pin to comprising the 7th pin and the 8th
Foot), the 4th pin to comprising the 4th pin and the 5th pin, these schemes are within the scope of the utility model.
In the present embodiment, the first network transformer 130 connects first pin pair and the second pin
Right, to realize power supply based on Ethernet or by electricity, the power supply (POE) based on Ethernet is referred in existing Ethernet
In the case that Cat.5 wiring architecture does not make any changes, for some IP-based terminals (such as IP telephone machine, wireless office
Domain net access point AP, web camera etc.) transmission data-signal while, moreover it is possible to provide the skill of direct current supply for such equipment
Art.When using POE technology to being powered by terminal equipment, there are two types of implementations, the first is to occupy (1,2,3,6) core
(corresponding 1st, 2,3,6 pin)；Second is to occupy (4,5,7,8) core (corresponding 4th, 5,7,8 pin), and the present embodiment uses
Be the first implementation.
In the present embodiment, the first audio-video, which turns AVT interface chip 120, can be converted to audio-video signal AVT video counts
According to, and by the AVT video data by the third pin to transmitting.
Wherein, AVT technology has the advantages that total structured sum number word signal transmission.In order to overcome since digital signal exists
Limitation in transmission range brought by decaying on transmission cable, AVT technology use new-generation digital video compression algorithm.
This algorithm is more more effective than the VC-2LD compression algorithm of standard.Moreover, slowed-down video is minimum (less than a frame cycle of images), people
Eye is detectable completely, it is believed that is exactly real-time.Moreover, the rate adaptation transmission technology of innovation, according to transmission
Distance and signal decaying, digital compression ratio can be adjusted, adaptively to reach optimal video image effect.
Wherein, first audio-video, which turns AVT interface chip 120, to be NS2510/NS2520/NS2530 chip, tool
There is at least a pair of of output difference separated time (SDO+ SDO-), realizes that AVT is regarded to be separately connected two pins of the third pin pair
The transmission of frequency evidence.
Wherein, the compatible 10/20bit bit wide of NS2510/NS2520/NS2530 chip video input interface, and have BT656/
1120, the various videos format such as CEA-861, CPI, DVP, maximum supports 1080P@30fps, while supporting SPDIF/I2S audio
Insertion.
The working principle of the data transmission device 100 of the utility model embodiment described briefly below.
Specifically, in the present embodiment, on the one hand, first audio-video, which turns AVT interface chip 120, can receive external dress
The audio, video data of transmission is set, while being transmitted to third pin pair after the audio, video data is converted to AVT video data, by
The transmission of AVT video data is carried out to the core of the cable of connection with the third pin.On the other hand, external equipment is sent
Ethernet data and direct current supply by the first pin to and second pin to being transferred to the first network transformer 130, then
It is transferred to receiving end, so that the data transmission device 100 based on the present embodiment can use a network card interface and cable simultaneously
Realize the transmission of audio, video data, the transmission of Ethernet data and POE by electricity (or power supply).
It should be noted that in a preferred embodiment of the utility model, the data transmission device 100 further includes
Second audio-video turns AVT interface chip 140, and two pins of the 4th pin pair are separately connected second audio-video and turn
Another pair output difference separated time of AVT interface chip 140.
In some cases, it is desirable to the audio, video data of simultaneous transmission two-way or more multichannel, then at this point it is possible to further
Turn AVT interface chip 140 increasing by the second audio-video, and be connected to the 4th pin pair being in idle condition, to realize two
The transmission of road audio, video data.
The audio, video data comprising panorama and include the audio-video of feature while for example, transmitting for web camera
This two-way audio, video data can be passed through respectively the first audio-video and turn AVT interface chip 120 and the second audio-video turn by data
AVT interface chip 140 and its corresponding pin are to transmitting.
The utility model second embodiment additionally provides a kind of data transmission set, including as described in above-mentioned any embodiment
Data transmission device 100.
In the present embodiment, the data transmission set can also include data acquisition module (such as microphone, camera
Deng), audio-video handle chip, wherein the audio, video data of data collecting module collected be sent to audio-video processing chip, through sound
First audio-video, which is sent to, after video frequency processing chip processing turns AVT interface chip 120.In addition, the audio-video handles core
Piece is also connect with the first network transformer 130, to receive the Ethernet data that the first network transformer 130 transmits
And/or direct current supply.
Referring to Fig. 2, the utility model 3rd embodiment additionally provide it is a kind of mating with above-mentioned data transmission device 100
Data sink 200, the data sink 200 includes that the second network card interface 210, AVT interface turn audio-video chip
220 and second network transformer 230, second network card interface 210 be provided with third pin pair and for realizing ether
Network data transmission the first pin to and second pin pair；Wherein, second network transformer 230 connects first pin
Pair and the second pin pair；The third pin turns audio-video chip to the AVT interface is connected.
In the present embodiment, second network card interface 210 is that identical network interface card connects with first network card interface 110
Mouthful, for example, all be RJ45 interface, the quantity for the pin having, the definition of each pin with first network card interface 110
Identical, this will not be repeated here for the utility model.
In the present embodiment, led to by data transmission device 100 by the AVT video data or Ethernet data of network cable transmission
The network cable transmission is crossed to second network card interface 210, is transferred to accordingly via the respective pins of the second network card interface 210
Element.For example, AVT video data turns audio-video chip 220 to AVT interface is transferred to by the third pin to be converted to sound
Video data.Ethernet data is via the first pin pair and second pin to being transferred to the second network transformer 230.
In addition, the data sink 200 can also by second network card interface 210 send Ethernet data or
Person's direct current supply, Ethernet data or direct current supply are sent to the first network card interface of data transmission device 100 by network
110 the first stitch to and the second stitch pair, then through first network transformer 130, realize the transmission and power supply of Ethernet data.
It should be noted that in the present embodiment, it is that two-way AVT connects warble tone that the AVT interface, which turns audio-video chip 220,
Video chip；4th pin turns audio-video chip to the two-way AVT interface is connected.
Wherein, for 100 simultaneous transmission two-way audio and video data streams of data transmission device the case where, AVT interface here
Turn audio-video chip 220 and turns audio-video chip using two-way AVT interface.4th pin is regarded to warble tone is also connect with the AVT
Frequency chip 220 connects, so that AVT interface turns audio-video chip 220 can receive the AVT converted by two-way audio, video data simultaneously
Video data, and audio, video data is converted to simultaneously, to play out display.
Wherein, the AVT interface turn audio-video chip 220 can NS2511/NS2521/NS2531 chip, NS2511/
NS2521/NS2531 chip is used as decoding chip and the pairing of NS2510/NS2520/NS2530 chip, is not only supported comprehensively
NS2510/NS2520/NS2530 chip format, and two paths of signals can be received simultaneously.
The utility model fourth embodiment further provides a kind of data receiver, including such as above-mentioned any embodiment
The data sink 200.
It should be noted that in the present embodiment, the data receiver can also include data disaply moudle, electricity
Source, wherein the audio, video data that AVT interface turns the generation of audio-video chip 220 is sent to display module and is shown.Power supply and institute
The connection of the second network transformer 230 is stated, to export satisfactory direct current supply by second network transformer 230.
Referring to Fig. 3, the 5th embodiment of the utility model additionally provides a kind of data transmission system, including such as any of the above-described
The data receiver of the data transmission set of embodiment and such as above-mentioned any embodiment；The first of the data transmission set
Network card interface is connect with the second network card interface of the data receiver by cable.
Wherein, it should be noted that in the description above, the data transmission set is as receiving end, and the number
According to receiving device as feeder ear, but in the other embodiments of the utility model, the data transmission set be can also be used as
Feeder ear, and the data receiver, as receiving end, these schemes both are within the protection scope of the present invention.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (10)
1. a kind of data transmission device, which is characterized in that including the first network card interface, the first audio-video turn AVT interface chip with
And first network transformer；Third pin pair is provided in first network card interface and for realizing Ethernet data transmission
First pin to and second pin pair；Wherein, the first network transformer connects first pin pair and described second
Pin；Two pins of the third pin pair are separately connected first audio-video and turn AVT interface chip.
2. data transmission device according to claim 1, which is characterized in that the data transmission device further includes the second sound
Video turns AVT interface chip, and first network card interface further includes the 4th pin pair, two pins point of the 4th pin pair
Second audio-video is not connected turns AVT interface chip.
3. data transmission device according to claim 2, which is characterized in that first network card interface is RJ45 interface,
First pin and second pin of first pin to corresponding RJ45 interface；The second pin RJ45 interface described correspondence
Third pin and the 6th pin；The 4th pin and the 5th pin of the third pin RJ45 interface described correspondence；It is described
The 7th pin and the 8th pin of the 4th pin RJ45 interface described correspondence.
4. data transmission device according to claim 2, which is characterized in that first network card interface is RJ45 interface,
First pin and second pin of first pin to corresponding RJ45 interface；The second pin RJ45 interface described correspondence
Third pin and the 6th pin；The 7th pin and the 8th pin of the third pin RJ45 interface described correspondence；It is described
The 4th pin and the 5th pin of the 4th pin RJ45 interface described correspondence.
5. a kind of data transmission set, which is characterized in that transmit dress including the data as described in Claims 1-4 any one
It sets.
6. a kind of data sink, which is characterized in that turn audio-video chip and including the second network card interface, AVT interface
Two network transformers, second network card interface are provided with third pin pair and for realizing the first of Ethernet data transmission
Pin to and second pin pair；Wherein, second network transformer connects first pin pair and the second pin
It is right；The third pin turns audio-video chip to the AVT interface is connected.
7. data sink according to claim 6, which is characterized in that second network card interface is RJ45 interface,
First pin and second pin of first pin to corresponding RJ45 interface；The second pin RJ45 interface described correspondence
Third pin and the 6th pin；The third pin corresponds to the 4th pin and the 5th pin or described of the RJ45 interface
Third pin corresponds to the 7th pin and the 8th pin of the RJ45 interface.
8. data sink according to claim 7, which is characterized in that second network card interface further includes the 4th drawing
Foot pair, it is that two-way AVT interface turns audio-video chip that the AVT interface, which turns audio-video chip,；4th pin is described in connection
Two-way AVT interface turns audio-video chip.
9. a kind of data receiver, which is characterized in that including the data receiver dress as described in claim 6 to 8 any one
It sets.
10. a kind of data transmission system, which is characterized in that including data transmission set as claimed in claim 5 and as weighed
Benefit require 9 described in data receiver；First network card interface of the data transmission device and the data receiver
Second network card interface is connected by cable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920126582.6U CN209330135U (en) | 2019-01-23 | 2019-01-23 | Data transmission device, equipment, system and data sink, equipment |
| PCT/CN2019/127859 WO2020151445A1 (en) | 2019-01-23 | 2019-12-24 | Data transmission apparatus, device, and system, and data reception apparatus and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920126582.6U CN209330135U (en) | 2019-01-23 | 2019-01-23 | Data transmission device, equipment, system and data sink, equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209330135U true CN209330135U (en) | 2019-08-30 |
Family
ID=67731851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920126582.6U Active CN209330135U (en) | 2019-01-23 | 2019-01-23 | Data transmission device, equipment, system and data sink, equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209330135U (en) |
| WO (1) | WO2020151445A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151445A1 (en) * | 2019-01-23 | 2020-07-30 | 广州视源电子科技股份有限公司 | Data transmission apparatus, device, and system, and data reception apparatus and device |
| WO2020164314A1 (en) * | 2019-02-15 | 2020-08-20 | 广州视源电子科技股份有限公司 | Network camera, and recording and streaming system |
| CN112269460A (en) * | 2020-10-26 | 2021-01-26 | 珠海格力电器股份有限公司 | Demonstrator power supply method and system, electronic device and processor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2687986Y (en) * | 2004-02-12 | 2005-03-23 | 华为技术有限公司 | Data-voice common line and remote power supply device |
| CN2694657Y (en) * | 2004-02-21 | 2005-04-20 | 华为技术有限公司 | A data voice branching and remote power supply apparatus |
| CN201797525U (en) * | 2010-09-17 | 2011-04-13 | 京信通信系统（中国）有限公司 | POE-based repeater power supply device |
| US8929468B1 (en) * | 2012-06-14 | 2015-01-06 | Aquantia Corp. | Common-mode detection with magnetic bypass |
| CN104333743A (en) * | 2014-11-25 | 2015-02-04 | 深圳市捷顺科技实业股份有限公司 | Video transmission device |
| CN106604120A (en) * | 2016-12-20 | 2017-04-26 | 深圳市汉科电子股份有限公司 | Extender device for transmitting super-definition audio and video signals over long distances |
| CN209330135U (en) * | 2019-01-23 | 2019-08-30 | 广州视源电子科技股份有限公司 | Data transmission device, equipment, system and data sink, equipment |
-
2019
- 2019-01-23 CN CN201920126582.6U patent/CN209330135U/en active Active
- 2019-12-24 WO PCT/CN2019/127859 patent/WO2020151445A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151445A1 (en) * | 2019-01-23 | 2020-07-30 | 广州视源电子科技股份有限公司 | Data transmission apparatus, device, and system, and data reception apparatus and device |
| WO2020164314A1 (en) * | 2019-02-15 | 2020-08-20 | 广州视源电子科技股份有限公司 | Network camera, and recording and streaming system |
| CN112269460A (en) * | 2020-10-26 | 2021-01-26 | 珠海格力电器股份有限公司 | Demonstrator power supply method and system, electronic device and processor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020151445A1 (en) | 2020-07-30 |
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