CN202364312U - Digital vehicle-mounted audio and video transmission system - Google Patents
Digital vehicle-mounted audio and video transmission system Download PDFInfo
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- CN202364312U CN202364312U CN2011204534739U CN201120453473U CN202364312U CN 202364312 U CN202364312 U CN 202364312U CN 2011204534739 U CN2011204534739 U CN 2011204534739U CN 201120453473 U CN201120453473 U CN 201120453473U CN 202364312 U CN202364312 U CN 202364312U
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Abstract
The utility model discloses a digital vehicle-mounted audio and video transmission system including an audio/video sending device and a plurality of audio/video receiving devices connected through an IP network. The audio/video sending device includes an audio/video collecting module and a video encoding module connected together. Each of the audio/video receiving devices connects with a video decoding module through network distribution modules. The video decoding module connects with a terminal display. The network distribution modules of the audio/video receiving devices are connected together through a network. The digital vehicle-mounted audio and video transmission system in the utility model connects each of the audio/video receiving devices with the video decoding modules through the network distribution modules. The cascade connection of the network distribution modules of the audio/video receiving devices is realized through the network, thereby realizing the collection, transmission and display of DVI/VGI signals and audio signals. The synchronous transmission of audio and video is guaranteed. And problems of image effect distortion and streaking that led by comparatively large loss in multistage distribution of signals are avoided.
Description
Technical field
The utility model relates to a kind of vehicle-mounted audio-video transmission system, relates in particular to the vehicle-mounted audio-video transmission system of a kind of numeral.
Background technology
Audio-video transmission system is widely used in media information delivery system, multimedia teaching, large screen projection and vehicle-mounted passenger information system (Passenger Information System; Be called for short PIS) etc. various occasions; In present vehicle-mounted passenger information system; The transmission of VGA (Video Graphics Array shows the drawing array) signal mainly realizes through using the VGA distributor to add the multicore shielded type cable, because train generally is made up of the more piece compartment; Cause the loss of signal after multistage distribution of VGA signal bigger, image effect distortion, hangover etc.; And can not realize the audio-visual synchronization transmission.Therefore; Be necessary existing vehicle-mounted audio-video transmission system is improved; Realize the collection of audio-video signal integral type, transmission and demonstration, and guarantee the audio-visual synchronization transmission, avoid causing image effect distortion, tailing problem greatly through multistage distribution loss because of signal.
The utility model content
The utility model technical problem to be solved provides the vehicle-mounted audio-video transmission system of a kind of numeral; Can realize that the DVI/VGA signal adds audio frequency signals collecting, transmission and demonstration; The transmission of assurance audio-visual synchronization is avoided causing image effect distortion, tailing problem because of signal greatly through multistage distribution loss.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide the vehicle-mounted audio-video transmission system of a kind of numeral; Comprise the audio frequency and video dispensing device and a plurality of audio and video receiver that link to each other through IP network; Wherein, Said audio frequency and video dispensing device comprises continuous audio-video collection module and video encoding module; Each audio and video receiver links to each other with the video decode module through the network allocation module, and said video decode module links to each other with terminal display, and the network allocation module of a plurality of audio and video receivers links to each other through network.
Above-mentioned digital vehicle-mounted audio-video transmission system, wherein, said video encoding module links to each other with IP network through optical transmission module, and said network allocation module links to each other with IP network through Optical Receivers.
Above-mentioned digital vehicle-mounted audio-video transmission system wherein, links to each other through VGA/DVI interface, COBBAIF between said audio-video collection module and the video encoding module, and binding post adopts the WAGO terminal of spring clamping.
The utility model contrast prior art has following beneficial effect: the digital vehicle-mounted audio-video transmission system that the utility model provides; Each audio and video receiver is linked to each other with the video decode module through the network allocation module; The network allocation module of a plurality of audio and video receivers links to each other through network and realizes cascade; Thereby realize that the DVI/VGA signal adds audio frequency signals collecting, transmission and demonstration; The transmission of assurance audio-visual synchronization is avoided causing image effect distortion, tailing problem because of signal greatly through multistage distribution loss.
Description of drawings
Fig. 1 is the vehicle-mounted audio-video transmission system structural representation of the utility model numeral;
Fig. 2 is that the utility model audio frequency and video dispensing device is formed sketch map;
Fig. 3 forms sketch map for the utility model audio and video receiver.
Among the figure:
1 audio frequency and video dispensing device, 2 audio and video receiver 3IP networks
4 terminal displays, 11 audio-video collection modules, 12 video encoding module
13 optical transmission modules, 21 Optical Receivers, 22 network allocation modules
23 video decode modules, 24 audio frequency and video distribution module
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
Fig. 1 is the vehicle-mounted audio-video transmission system structural representation of the utility model numeral; Fig. 2 is that the utility model audio frequency and video dispensing device is formed sketch map; Fig. 3 forms sketch map for the utility model audio and video receiver.
See also Fig. 1, Fig. 2 and Fig. 3; The digital vehicle-mounted audio-video transmission system that the utility model provides comprises the audio frequency and video dispensing device 1 and a plurality of audio and video receivers 3 that links to each other through IP network 3; Wherein, Said audio frequency and video dispensing device 1 comprises continuous audio-video collection module 11 and video encoding module 12; Each audio and video receiver 3 links to each other with video decode module 23 through network allocation module 22, and said video decode module 23 links to each other with terminal display 4, and the network allocation module 22 of a plurality of audio and video receivers 3 links to each other through network.
Above-mentioned digital vehicle-mounted audio-video transmission system; Wherein, Link to each other through VGA/DVI interface, COBBAIF between said audio-video collection module 11 and the video encoding module 12, link to each other with video encoding module 12 through audio transmission line with 3.5 interfaces such as audio-video collection module 11; Video encoding module 12 links to each other with terminal display 4 through transmission line with VGA interface and the tone frequency channel wire with 3.5 interfaces, and binding post adopts the WAGO terminal of spring clamping.WAGO wiring technology is a patented technology of German WAGO company; It adopts unique spring pressure technology; The snap fit wiring has easy-to-connect, solid and reliable characteristics; Adopt the wiring technology of WAGO not only to save a large amount of setting up times, more the user provides a kind of safety relieved wiring.
The digital vehicle-mounted audio-video transmission system that the utility model provides; Signal processing is following: audio frequency and video dispensing device 1 is through having VGA interface or DVI (Digital Visual Interface; Digital visual interface) signal source equipment of interface and COBBAIF; Gather original high sharpness video, voice data, through being transferred to first segment audio and video receiver 3 after 12 pairs of these original videos of video encoding module, the voice data compression; First segment audio and video receiver 3 will obtain network data flow and through network allocation module 24 network data flow will be divided into 2 groups; 1 group through 23 decompressions of video decode module; Video, audio frequency after will decompressing through audio frequency and video distribution module 24 in the back output on a plurality of terminal displays 4; Other 1 group network video flowing is transferred to the second joint audio and video receiver, 3, the second joint audio and video receivers 3 through CAT5 netting twine or IP network 3 and equally network data flow is decoded into video, audio signal output to a plurality of terminal displays 4, gives the 3rd joint audio and video receiver 3 with Network Traffic Data Flows simultaneously; By that analogy, sustainable series connection is gone down.Coding/decoding module is through the power supply of WAGO terminals in this system, and optical transmission module 13 is connected IP network with Optical Receivers 21.Coding/decoding module is carried out the configuration and the modification of various parameters such as VGA coding, compression bit rate, flow, IP address from receive the various command of client through network.
In sum, the digital vehicle-mounted audio-video transmission system that the utility model provides, concrete beneficial effect is following: 1) adopt the code encoding/decoding mode antijamming capability strong, video image quality is high, image fault is little, system delay property is little, real-time is good; 2) adopt audio frequency and video to gather simultaneously, encode, decode, audio-visual synchronization property is good; 3) can transmit the DVI digital signal, can transmit the VGA analog signal again, system's highly versatile; 4) adopt the WAGO binding post to make more convenient, durable reliable, the anti-vibration of construction wiring, be easy to safeguard.
Though the utility model discloses as above with preferred embodiment; Right its is not in order to limit the utility model; Any those skilled in the art; In spirit that does not break away from the utility model and scope, when can doing a little modification and perfect, so the protection range of the utility model is when being as the criterion with what claims defined.
Claims (3)
1. vehicle-mounted audio-video transmission system of numeral; Comprise the audio frequency and video dispensing device (1) and a plurality of audio and video receiver (3) that link to each other through IP network (3); It is characterized in that; Said audio frequency and video dispensing device (1) comprises continuous audio-video collection module (11) and video encoding module (12); Each audio and video receiver (3) links to each other with video decode module (23) through network allocation module (22), and said video decode module (23) links to each other with terminal display (4), and the network allocation module (22) of a plurality of audio and video receivers (3) links to each other through network.
2. the vehicle-mounted audio-video transmission system of numeral as claimed in claim 1; It is characterized in that; Said video encoding module (12) links to each other with IP network (3) through optical transmission module (13), and said network allocation module (22) links to each other with IP network (3) through Optical Receivers (21).
3. according to claim 1 or claim 2 digital vehicle-mounted audio-video transmission system; It is characterized in that; Link to each other through VGA/DVI interface, COBBAIF between said audio-video collection module (11) and the video encoding module (12), binding post adopts the WAGO terminal of spring clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204534739U CN202364312U (en) | 2011-11-16 | 2011-11-16 | Digital vehicle-mounted audio and video transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204534739U CN202364312U (en) | 2011-11-16 | 2011-11-16 | Digital vehicle-mounted audio and video transmission system |
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| CN202364312U true CN202364312U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204534739U Expired - Fee Related CN202364312U (en) | 2011-11-16 | 2011-11-16 | Digital vehicle-mounted audio and video transmission system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104331946A (en) * | 2014-11-28 | 2015-02-04 | 奇瑞商用车（安徽）有限公司 | Integrated form remote terminal for TELEMATICS system |
| CN110519531A (en) * | 2019-09-11 | 2019-11-29 | 华东师范大学 | Multi-path high-definition video distribution formula processing equipment |
-
2011
- 2011-11-16 CN CN2011204534739U patent/CN202364312U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104331946A (en) * | 2014-11-28 | 2015-02-04 | 奇瑞商用车（安徽）有限公司 | Integrated form remote terminal for TELEMATICS system |
| CN110519531A (en) * | 2019-09-11 | 2019-11-29 | 华东师范大学 | Multi-path high-definition video distribution formula processing equipment |
| CN110519531B (en) * | 2019-09-11 | 2024-03-22 | 华东师范大学 | Multipath high-definition video distributed processing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |