CN203801040U - Vehicle-mounted digital video system - Google Patents
Vehicle-mounted digital video system Download PDFInfo
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- CN203801040U CN203801040U CN201420192591.2U CN201420192591U CN203801040U CN 203801040 U CN203801040 U CN 203801040U CN 201420192591 U CN201420192591 U CN 201420192591U CN 203801040 U CN203801040 U CN 203801040U
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Abstract
The utility model discloses a vehicle-mounted digital video system. The system comprises a cloud server, a control unit and a vehicle-mounted terminal. The cloud server is in network connection with the control unit, and is controlled by the control unit. The vehicle-mounted terminal is in network connection with the cloud server to carry out file transfer and playback. The vehicle-mounted terminal comprises a central processing unit, a video image decoding chip, an audio decoder, a network connecting unit, an output interface unit, a memory unit, a power supply unit and a remote control infrared head, wherein the video image decoding chip, the audio decoder, the network connecting unit, the output interface unit, the memory unit, the power supply unit and the remote control infrared head are connected with the central processing unit. The video decoding processing chip is connected with a data forward error correction processing chip. According to the utility model, cloud storage and multicast technologies are applied to the vehicle-mounted digital video system; in order to cooperate with the two technologies, the remote control infrared head and the data forward error correction processing chip are added in the vehicle-mounted terminal; overall vehicle-mounted interference signals are minimized; and data packet loss caused by a multicast technology is effectively improved.
Description
Technical field
The utility model relates to audio-video system, relates in particular to a kind of digitlization audio-video system based on vehicle-mounted.
Background technology
In the information-based digitized tide in the world, multimedia technology and the communication technology have become the focus that computer industry is paid close attention to.Streaming Media (Streaming Media) is the technology of a kind of mode with audio and video data streams transferring multimedia information on network.
But, because the uncertain variations of network parameter such as uncertainty, bandwidth, time delay and the packet loss of current Internet network condition all may cause the situation that the pause of client control image is even interrupted to occur at any time.Meanwhile, network Development rapidly and the aspect such as resource management, error control, flow control, speed control and the service quality of the application of distributed flow media to network new demand has been proposed.
Existing flow medium live system technology comprises in data transmission: in the time that view data is transmitted from server to display terminal, can adopt two kinds of modes of clean culture and multicast person.
Clean culture (Unicast) refers to that transmitting terminal carries out respectively transfer of data to each receiving terminal, or claims 1 pair of 1 data transfer mode.Along with the increase of receiving terminal, the load of server (trunking scheme), and the load of network equipment router will increase, to the performance of server, and the network bandwidth all has high requirements.
Multicast (Multicast) refers to that transmitting terminal sends data to specific one group of receiving terminal simultaneously, or claims 1 pair of n data transfer mode.Because transmitting terminal only sends a packet, even if the quantity of receiving terminal increases, the transmission quantity (Traffic) of network can not increase.The performance of multicast to server (trunking scheme), and the requirement of the network bandwidth is not high.Multicast can transmit the image of large picture, high definition more glibly in real time.But, multicast adopts UDP but not TCP, and the loss of packet is inevitable.
On the other hand, at present onboard system, how most of pattern that adopts home server to coordinate the management of car-mounted terminal, due to the relation of the mobility of vehicle, change the never good solution of content in onboard system.Make to change content and need to spend a large amount of manpower and materials, management is simultaneously got up also very inconvenient.Also need on the other hand to bear high server cost.
In order to address the above problem, carry out a series of research.
Utility model content
The purpose of this utility model is, a kind of digitlization audio-video system based on vehicle-mounted is provided, to overcome the existing above-mentioned shortcoming and defect of prior art.
The technical problem of the required solution of the utility model, can be achieved through the following technical solutions:
A digitlization audio-video system based on vehicle-mounted, is characterized in that: comprising: cloud server, control unit and car-mounted terminal, and described cloud server is connected with control unit network, and described car-mounted terminal is connected with cloud server network;
Wherein, described car-mounted terminal comprises: central processing unit, the video image decoding chip being attached thereto, audio decoder, network connection unit, output interface unit, memory cell, the infrared head of power subsystem and remote control, described network connection unit one end is connected with cloud server network, the described network connection unit other end is connected with central processing unit, one end of described output interface unit is connected with display device, the other end of described output interface unit is connected with central processing unit, between described central processing unit unit connected to the network, be provided with data correction process chip connection forward.
Further, described network connection unit comprises: Ethernet card chip and RJ45, and one end of described Ethernet card chip is connected with central processing unit, and the other end of described Ethernet card chip is connected with RJ interface, and described RJ45 is connected optical fiber with Ethernet card chip.
Further, described output interface unit comprises: HDMI output interface, VGA output interface, YpbPr output interface and AV output interface, described HDMI output interface, VGA output interface, YpbPr output interface and AV output interface are connected with central processing unit.
Further, described memory cell comprises: internal memory, flash memory and hard disk, described internal memory, flash memory and hard disk are connected with central processing unit.
Further, the infrared head of described remote control comprises: infrared remote receiver, infrared process chip and infrared transmission portion, and the output of described infrared remote receiver is connected with infrared process chip, and the output of infrared process chip is connected with the input of infrared transmission portion.
What further, described control unit adopted is PC, mobile phone or other-end equipment.
That further, the model of described image decoding chip adopts is sigma8671.
The beneficial effects of the utility model:
The utility model applies to the technology of cloud storage and multicast in vehicle-mounted digitlization audio-video system, simultaneously in order to coordinate this two kinds of technology, the infrared head of remote control and data correction process chip forward in car-mounted terminal, are increased, reduce vehicle-mounted overall signal interference signal as far as possible, effectively improved the loss of the packet bringing due to multicasting technology.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the structured flowchart of car-mounted terminal.
Fig. 3 be car-mounted terminal external structure.
Reference numeral:
Cloud server 100, territory control administration module 110, territory 111 and control unit 200.
Car-mounted terminal 300, central processing unit 310, video image decoding chip 320, audio decoder 330, network connection unit 340, Ethernet card chip 341 and RJ45 interface 342.
Output interface unit 350, HDMI output interface 351, VGA output interface 352, YpbPr output interface 353 and AV output interface 354.
Memory cell 360, internal memory 361, flash memory 362 and hard disk 363.
Power subsystem 370, infrared 380 of remote control, infrared remote receiver 381, infrared process chip 382 and infrared transmission portion 383.
Display device 400.
Embodiment
Below in conjunction with specific embodiment, the utility model is done to progressive explanation.Should be understood that following examples are only for the utility model is described but not for limiting scope of the present utility model.
Embodiment 1
Fig. 1 is structured flowchart of the present utility model.Fig. 2 is the structured flowchart of car-mounted terminal.Fig. 3 be car-mounted terminal external structure.
As shown in Figure 1, a kind of digitlization audio-video system based on vehicle-mounted comprises: cloud server 100, control unit 200 and car-mounted terminal 300.
Traditional vehicle carried video system great majority are local transmission or local area network (LAN) transmission, and local transmission is more the product of family car class, and local area network (LAN) is on the Large-sized Communication instruments such as train.Local area network (LAN) propagation can be subject to various interference source impacts in driving process, makes result of broadcast very poor.
In the information-based digitized tide in the world, multimedia technology and the communication technology have become the focus that computer industry is paid close attention to.Streaming Media is the technology of a kind of mode with audio and video data streams transferring multimedia information on network.
Now a lot of technology are that onboard system is connected with Internet network, to improve the problem of conventional local area jitter.But because the uncertain variations of network parameter such as uncertainty, bandwidth, time delay and the packet loss of current Internet network condition all may cause the situation that the pause of client control image is even interrupted to occur at any time.Meanwhile, network Development rapidly and the aspect such as resource management, error control, flow control, speed control and the service quality of the application of distributed flow media to network new demand has been proposed.Make these new technologies appoint and so have many problems in the process of using, also need to buy or rental services device simultaneously, cost is also improved thereupon greatly.
In sum, the problem of vehicle-mounted digital audio-video system is mainly deposited both ways: the problem of server cost and administrative expenses and the stability problem that network is connected.
For the problem of settlement server cost and administrative expenses, the utility model is to have adopted cloud memory technology, and the cloud storage server of utilization is preserved user's data, to solve the problem of the high service charge of client.
Cloud server 100 is connected with control unit 200 networks, and car-mounted terminal 300 is connected with cloud server 100 networks.
Cloud server 100 provides territory control account to carry out territory control administration module 110, territory control administration module 110 is to set up multiple territories 111 by control unit 200, user by using territory control account to log in cloud server 100 on control unit 200, territory 111 corresponding to management domain control account separately, each territory 111 is complete independent operations, mutually between without any relation.The utility model adopts and manages independently in the problem of management of territory, control administration module 110 by territory and divide a territory 111 for each user, below territory, set up again multiple accounts separately, user can log in the territory 111 that is allocated to oneself, can accomplish traditional pattern of managing independently on the one hand, can manage concentratedly and be distributed to each local terminal, reduce network layout and cost of labor; Do not worry on the other hand the potential safety hazard that Cloud Server brings, and the free service device that the realization of Cloud Server storage can make different operators use agency to provide, agency's operation cost also can be shared to operator simultaneously, makes network operation cost obtain reducing greatly.
Cloud server 100 is connected with control unit 200 networks, user logs on after cloud server 100 by control unit 200, the running status of monitoring car-mounted terminal 300, long-range car-mounted terminal 300 is managed to operation, do not need technical staff to safeguarding regulation and control every day, greatly saved manpower and materials.What control unit 200 adopted is PC, mobile phone or other-end equipment.
Network problem on the other hand.Stream media technology is generally divided into clean culture Unicast and multicast Multicast.Clean culture refers to that transmitting terminal carries out respectively transfer of data to each receiving terminal, or claims 1 pair of 1 data transfer mode.Along with the increase of receiving terminal, the load of server trunking scheme, and the load of network equipment router will increase, to the performance of server trunking scheme, and the network bandwidth all has high requirements.
Multicast Multicast refers to that transmitting terminal sends data to specific one group of receiving terminal simultaneously, or claims 1 pair of n data transfer mode.Because transmitting terminal only sends a packet, even if the quantity of receiving terminal increases, the transmission quantity Traffic of network can not increase.The performance of multicast to server trunking scheme, and the requirement of the network bandwidth is not high.Multicast can transmit the image of large picture, high definition more glibly in real time.But, multicast adopts UDP but not TCP, and the loss of packet is inevitable.
From cost angle, multicast is lower than clean culture to the requirement of cost, this is that clean culture cannot improved place, the packet loss problem of multicast can be revised by the improvement of equipment, what therefore the utility model was selected is multicasting technology, streaming media video is play and taken irrelevant with terminal plays quantity network.Realize flow-medium performance intelligent synchronization and show, changed the method for the current conventional video distribution using, improved video playing quality.
For this reason, we have carried out a series of improvement to car-mounted terminal 300.
As shown in Figures 2 and 3, car-mounted terminal 300 comprises: central processing unit 310, infrared 380 of the video image decoding chip 320 being attached thereto, audio decoder 330, network connection unit 340, output interface unit 350, memory cell 360, power subsystem 370 and remote control.Central processing unit is processed the order data processing of car-mounted terminal, due to the next data explosion of network voice band, traditional vehicle-mountedly do not need extra chip to process, but after networking, the utility model, in order to accelerate the processing speed of whole system, has increased central processing unit 310, traditional technology is directly chip to be connected with video image decoding chip, the utility model is first by data access central processing unit 310, carries out preliminary treatment, has improved speed and the effect of decoding.The model of video image decoding chip 320 is sigma8671, the demand that uses the scheme of sigma8671 can be competent at Streaming Media completely, and its dominant frequency, more than 500MHZ, is enough to deal with large-scale application demand.
Audio decoder 330 is connected with central processing unit 310, and network connection unit 340 one end are connected with cloud server 100 networks, and network connection unit 340 other ends are connected with central processing unit 310.Network connection unit 340 comprises: Ethernet card chip 341 and RJ45 interface 342, one end of Ethernet card chip 341 is connected with central processing unit 310, the other end of Ethernet card chip 341 is connected with RJ45 interface 342, and RJ45 interface 342 is connected optical fiber with Ethernet card chip 341.
One end of output interface unit 350 is connected with display device 400, and the other end of output interface unit 350 is connected with central processing unit 310.Output interface unit 350 comprises: HDMI output interface 351, VGA output interface 352, YpbPr output interface 353 and AV output interface 354, HDMI output interface 351, VGA output interface 352, YpbPr output interface 353 and AV output interface 354 are connected with central processing unit 310.
Memory cell 360 is connected with central processing unit 310.Memory cell 360 comprises: internal memory 361, flash memory 362 and hard disk 363, internal memory 361, flash memory 362 and hard disk 363 are connected with central processing unit 320.
In order to increase adaptability, the multiple output interface of increase, meets the demand of different field and situation; In addition aspect storage, except the internal memory 361 of 512M, also having increased flash memory 362 increases the processing speed of data.
Except above-mentioned basic parts, the utility model has also increased data correction process chip 390 forward, and data forward correction process chip 390 are arranged between network connection unit 340 and central processing unit 310.In some broadcasting media technology, can utilize error correcting technique forward to solve packet loss problem, his main method is to pass through: in the time receiving data-signal, data forward correction process chip 390 can carried out error correction by signal the very first time, ensure the decoding effect of video image decoding chip 320, reduce the error rate of digital signal, improve the reliability of signal transmission.The utility model is on basis, above function to be integrated on chip, existing technology is difficult to use vehicle-mounted technical on the one hand, on the other hand in order further to improve treatment effect, therefore the external exclusive data of carrying out data processing of central processing unit 310 forward correction process chip 390 to reach a difficult problem that solves multicast packet loss.
On the other hand, we find while summing up user's experience, current control technology can be interfered in train, cause controlling and be difficult to pass on, and touch screen technology also can be subject to the restriction of train environment, and not as the performance in other environment so outstanding, therefore we on onboard system 300, increased a set of remote control distant infrared 380 to improve control problem.Controlling infrared 380 comprises: infrared remote receiver 381, infrared process chip 382 and infrared transmission portion 383, and the output of infrared remote receiver 381 is connected with infrared process chip 382, and the output of infrared process chip 382 is connected with the input of infrared transmission portion 383.The technology that this script uses on television set, we are transferred to his function in onboard system, compared with technology on television set, the utility model has increased infrared process chip 382, each infrared transmission portion 383 has been carried out to the sheath body processing of raising the price, make infrared signal increase distinctive points, the infrared remote control of whole train can not obscured mutually.
Above embodiment of the present utility model is illustrated, but the utility model is as limit, only otherwise depart from aim of the present utility model, the utility model can also have various variations.
Claims (7)
1. the digitlization audio-video system based on vehicle-mounted, it is characterized in that: comprising: cloud server (100), control unit (200) and car-mounted terminal (300), described cloud server (100) is connected with control unit (200) network, and described car-mounted terminal (300) is connected with cloud server (100) network;
Wherein, described car-mounted terminal (300) comprising: central processing unit (310), the video image decoding chip (320) being attached thereto, audio decoder (330), network connection unit (340), output interface unit (350), memory cell (360), the infrared head of power subsystem (370) and remote control (380), described network connection unit (340) one end is connected with cloud server (100) network, described network connection unit (340) other end is connected with central processing unit (310), one end of described output interface unit (350) is connected with display device (400), the other end of described output interface unit (350) is connected with central processing unit (310), between described central processing unit (310) unit connected to the network (340), be provided with data correction process chip (390) connection forward.
2. a kind of digitlization audio-video system based on vehicle-mounted according to claim 1, it is characterized in that: described network connection unit (340) comprising: Ethernet card chip (341) and RJ45 interface (342), one end of described Ethernet card chip (341) is connected with central processing unit (310), the other end of described Ethernet card chip (341) is connected with RJ45 interface (342), and described RJ45 interface (342) is connected optical fiber with Ethernet card chip (341).
3. a kind of digitlization audio-video system based on vehicle-mounted according to claim 1, it is characterized in that: described output interface unit (350) comprising: HDMI output interface (351), VGA output interface (352), YpbPr output interface (353) and AV output interface (354), described HDMI output interface (351), VGA output interface (352), YpbPr output interface (353) and AV output interface (354) are connected with central processing unit (310).
4. a kind of digitlization audio-video system based on vehicle-mounted according to claim 1, it is characterized in that: described memory cell (360) comprising: internal memory (361), flash memory (362) and hard disk (363), described internal memory (361), flash memory (362) and hard disk (363) are connected with central processing unit (310).
5. a kind of digitlization audio-video system based on vehicle-mounted according to claim 1, it is characterized in that: the infrared head of described remote control (380) comprising: infrared remote receiver (381), infrared process chip (382) and infrared transmission portion (383), the output of described infrared remote receiver (381) is connected with infrared process chip (382), and the output of infrared process chip (382) is connected with the input of infrared transmission portion (383).
6. a kind of digitlization audio-video system based on vehicle-mounted according to claim 1, is characterized in that: what described control unit (200) adopted is PC, mobile phone or other-end equipment.
7. a kind of digitlization audio-video system based on vehicle-mounted according to claim 1, is characterized in that: that the model of described image decoding chip (320) adopts is sigma8671.
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| CN201420192591.2U CN203801040U (en) | 2014-04-21 | 2014-04-21 | Vehicle-mounted digital video system |
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| CN201420192591.2U CN203801040U (en) | 2014-04-21 | 2014-04-21 | Vehicle-mounted digital video system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378677A (en) * | 2014-11-19 | 2015-02-25 | 青岛海信网络科技股份有限公司 | Video switching control method for vehicle-mounted terminal |
| CN104950872A (en) * | 2015-05-20 | 2015-09-30 | 深圳市元征科技股份有限公司 | Vehicular diagnostic system and vehicular network system |
| CN106504368A (en) * | 2016-10-28 | 2017-03-15 | 芜湖市吉安汽车电子销售有限公司 | A kind of tachograph system based on vehicle-mounted DA |
-
2014
- 2014-04-21 CN CN201420192591.2U patent/CN203801040U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378677A (en) * | 2014-11-19 | 2015-02-25 | 青岛海信网络科技股份有限公司 | Video switching control method for vehicle-mounted terminal |
| CN104950872A (en) * | 2015-05-20 | 2015-09-30 | 深圳市元征科技股份有限公司 | Vehicular diagnostic system and vehicular network system |
| CN106504368A (en) * | 2016-10-28 | 2017-03-15 | 芜湖市吉安汽车电子销售有限公司 | A kind of tachograph system based on vehicle-mounted DA |
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