CN103079050A - Vehicle-mounted networked audio/video monitoring system - Google Patents
Vehicle-mounted networked audio/video monitoring system Download PDFInfo
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Abstract
The invention provides a vehicle-mounted networked audio/video monitoring system, which is formed by audio/video collection modules, an audio/video server, a remote data center and a remote terminal. A plurality of the audio/video collection modules are erected at different positions of a passenger motor vehicle; and when the audio/video collection modules are subjected to outside stimulation triggering or a timing signal, collected audio/video signals are sent to the vehicle-mounted audio/video server. Audio/video data is processed by the server and then is stored; or the audio/video data is remotely subjected to data exchanging with other servers and a data center; or the audio/video data is exchanged with control information and monitoring data of a remote terminal through a certain communication method. The vehicle-mounted networked audio/video monitoring system disclosed by the invention aims to solve audio/video monitoring problems when the passenger motor vehicle is at driving and stopping states. The system can be used for working of determining traffic accident responsibilities, taking the evidence of violation, taking the evidence of damage during stopping and the like, and can also be used for buildings and other networked audio/video monitoring applications.
Description
Technical field
The present invention relates to the audio-video monitoring technical field, proposed a kind of audio-video monitoring network that is formed by audio-video collection module, audio/video server, remote data center and monitor terminal.The work such as evidence obtaining that the typical case uses as traffic accident responsibility is definite, damage under the traffic violations evidence obtaining, vehicle parking situation.This technology also can be used for building and other all networked audio/video monitor and control systems.
Background technology
Video monitoring refers to adopt a kind of supervisory control system of IMAQ and treatment facility, computer network facility and telemanagement center formation.It not only can Real Time Monitoring, the also local video recording of G, and can inquire about easily, collect evidence, for post-survey provides foundation.The current main-stream video monitoring system all has control centre, by video switching matrix different video acquisition module and The Cloud Terrace is controlled.Control centre also has image-capable usually.Can be compressed, be amplified, be cut apart etc. to audio-video signal processing.But current audio-video monitoring mostly is fixing point, and for example building safety monitoring design is not suitable for the demand that these video monitoring systems of vehicular applications all can not satisfy vehicle-mounted monitoring, is mainly reflected in following problem:
(1) system is too complicated, is not suitable for vehicular applications.
Current video monitoring system is made of camera, video switching matrix, central control board etc. usually, and the equipment bulky complex is not suitable for vehicular applications.Wherein video switching matrix for example, reality does not need in vehicle-mounted audio-video monitoring is used.
(2) only have video monitoring, lack sound monitoring.
Current video monitoring system lacks sound monitoring usually, because for application such as building security protections, video monitoring is enough, but then inadequate for vehicular applications, reason is that the user often needs to trigger supervising device according to the sharp-pointed alarm sound of alarm, and the current video monitoring system of this function does not possess.
(3) lack low power dissipation design and powered battery ability.
Current video monitoring system has the 220V supply network usually, lacks low power dissipation design, also lacks the battery relevant design and is working without under the electric power thus supplied to guarantee camera and central control board.
(4) lack networking communication between the video surveillance network.
Current video monitoring system only has the network communication mode between middle control center and the camera usually, but is " information island " between video monitoring system, does not have network communication mode.
Summary of the invention
Content of the present invention is, has proposed a kind of In-vehicle networking audio/video monitor and control system, and this system is made of audio-video collection module, audio/video server, remote data center and remote terminal.A plurality of audio-video collection module rack are located at the diverse location of passenger vehicle, and the audio-video signal that collects is sent on the vehicle-mounted audio/video server, accept simultaneously the control command of server, such as collection, standby, conversion visual angle etc.Server can obtain the geographical position of vehicle, and with relevant information with the video content storage of packing.Server can carry out exchanges data with long-range other servers and data center.Consist of the switched data network on the discrete monitor network between a plurality of servers and the remote data center.Remote terminal can be desktop computer or portable terminal, can obtain audio-video frequency content after the packing by wired mode or wireless mode, and can manage and the audio-video collection module is carried out remote control audio/video server.Portable terminal can adopt the monitoring mode based on Web, also can adopt based on the local monitoring mode of using of specific portable terminal.Whole system adopts the pattern of vehicle power and the complementary power supply of storage battery.That this technology also can be used for is vehicle-mounted, building and other all networked audio/video monitor and control systems.
The invention has the beneficial effects as follows:
(1) system is optimized, and is fit to vehicular applications.
Vehicle-mounted frequency supervisory control system needs not exceed 4 cameras usually, therefore removed video switching matrix during system, after considering the audio frequency and video IMAQ, consideration for customer using cost, wish to adopt a kind of free network technology that audio-video frequency content is uploaded in the audio/video server, so audio/video server has adopted vehicle-mounted pattern.Whole system is peeled off remote center's control desk.
(2) possess simultaneously the audio-video monitoring ability, and have auxiliary data.
Have simultaneously the audio-video monitoring ability, and have the supplementarys such as geographical position.Server offers your user by the mode of overlapping text on image and picture-in-picture with these information.
(3) possess low power dissipation design and powered battery ability.
Audio-video collection module and vehicle-mounted audio/video server all have reserve battery, can not work a period of time when having powered battery.System also can adopt vehicle-mounted 12V power supply to power and charge, and also can adopt external charger that battery is charged.
(4) internetwork-ing between the monitoring sub-network.
Whole monitor network is made of two levels, is respectively the local monitor network that is made of audio-video collection module, vehicle-mounted audio/video server and remote terminal, and the Wide Area Network that is made of a plurality of vehicle-mounted audio/video servers and remote data center.No longer be " information island " between a plurality of vehicle-mounted audio/video servers, can carry out network service.
Description of drawings
Fig. 1 is vehicle-mounted audio/video server system architecture diagram.
Embodiment
Below, be described in detail with reference to the attached drawings In-vehicle networking audio/video monitor and control system of the present invention.
In-vehicle networking audio/video monitor and control system of the present invention, general frame as shown in Figure 1.This system is made of audio-video collection module, vehicle-mounted audio/video server and remote data center and remote terminal.A plurality of audio-video collection module rack are located at the diverse location of passenger vehicle, and the audio-video signal that collects is sent on the vehicle-mounted audio/video server, accept simultaneously the control command of server.Vehicle-mounted audio/video server has multiple external communication interface, such as simulation and digital audio/video, USB, GPS, WiFi, WLAN, mobile communication interface etc.Server can obtain the geographical position of vehicle, and with relevant information with the video content storage of packing.Server can carry out exchanges data with long-range other servers and data center.Consist of the switched data network on the discrete monitor network between a plurality of servers and the remote data center.User terminal can adopt the monitoring mode based on Web, also can adopt based on the local monitoring mode of using of particular terminal.Whole system adopts the pattern of vehicle power and the complementary power supply of storage battery.
The vehicle-mounted audio/video server that the present invention proposes comprises following modules:
Module 1: audio-video collection module.
The general embodiment of audio-video collection module is by the focal imaging optical system, image device, and image processing system, video interface system and control module form.
A kind of embodiment of audio-video collection module has automatically controlled The Cloud Terrace, can be changed by central control systems such as vehicle-mounted audio/video servers the focal length of monitoring angle or even imaging system.
A kind of embodiment of audio-video collection module has built-in trigger module, can identify the sharp-pointed buzz of narrow frequency that the passenger vehicle alarm sends, and triggers the audio-video collection module and gathers audio, video data, and return to vehicle-mounted audio/video server.
Module 2: the interface module of vehicle-mounted audio/video server.
This module belongs to the part of vehicle-mounted audio/video server, and function is by wired or wireless interface vehicle-mounted audio/video server and external object to be communicated.External object comprises the acquisition module as audio-video source; GPS module as the geographic information data source; Control the remote terminal of carrier as the user, the typical case is such as long-distance on-line PC and mobile phone; Other vehicle-mounted audio/video server and remote data terminals.Wired or wireless interface is analog composite, USB, HDMI, GPS, bluetooth, WLAN, WiFi, 3G/4G and above mobile data communication network or other wired or mobile communications for example.
Module 3: the audio frequency and video processing module of vehicle-mounted audio/video server.
This module belongs to the part of vehicle-mounted audio/video server, and function is that audio, video data is processed, change into can be serviced the data flow processed of device, and add the additional data such as geography information.
A kind of embodiment of audio frequency and video processing module be with nothing compression original video through compression coding, behind the additional datas such as joining day stamp, geography information, packaging multiplexing become can Internet Transmission TS flow and IP packet.
A kind of embodiment of audio frequency and video processing module be with compress, the video of having packed is through unpacking behind the demultiplexing, behind the additional datas such as joining day stamp, geography information, repack be multiplexed into can Internet Transmission TS flow and IP packet.This realization example not necessarily will be with video decode.
Above refer to that without the compression original video PAL, NTSC, SDTV, HDTV etc. did not carry out the video formats of Video coding compression among two kinds of embodiment.The compression coding mode can be MPEG2/4, H.264 wait the audio/video coding technology.
Module 4: the memory module of vehicle-mounted audio/video server.
This module belongs to the part of vehicle-mounted audio/video server, and function is that audio, video data is carried out provisional buffer memory or persistent storage.
A kind of embodiment of provisional buffer memory stores data in PC usefulness or the notebook usefulness memory modules.A kind of embodiment of persistent storage will store data in disk hard disk or the solid state hard disc.
Module 5: the network service module of vehicle-mounted audio/video server.
This module belongs to the part of vehicle-mounted audio/video server, and function mainly contains following:
Function 1: service is provided.Vehicle-mounted audio/video server is crossed Web or alternate manner is exposed to serviced end with the data communication devices such as audio frequency and video of record, and the services such as thumbnail, index, inquiry, download, management of audio, video data and auxiliary data are provided.
Function 2: communicate with other vehicle-mounted audio/video server.Certain vehicle-mounted audio/video server can be directly and other vehicle-mounted audio/video servers network, perhaps network by remote data center and other vehicle-mounted audio/video servers, the services such as p2p data sharing are provided.
Function 3: communicate with remote data center.A plurality of vehicle-mounted audio/video servers and remote data center consist of a monitor network.Vehicle-mounted audio/video server can be uploaded audio, video data and be kept in the remote data center through the authentication of remote data center.Vehicle-mounted audio/video server also can be downloaded data own or that other vehicle-mounted audio/video server is preserved from remote data center.
Module 6: the energy storage device of vehicle-mounted audio/video server.
This module provides energy storage device for vehicle-mounted audio/video server.When car engine, vehicle power pair, the server power supply, and to charge in batteries.When automobile parking was flame-out, server adopted storage battery power supply.
Module 7: the middle control module of vehicle-mounted audio/video server.
This module be certain server for example the some control modules on Linux or the Android basis form.Its function is to receive user's control command, and docking port module, external audio-video collection module are controlled.Audio/video flow to input is processed according to type.Audio/video flow after processing is stored, and in Database Systems, done mark of correlation.
Module 8: remote data center.
This functions of modules is the data center as all vehicle-mounted audio/video servers.The user can rent the space of data center, stores the audio, video data of oneself, and data flow can directly upload to the data center from vehicle-mounted audio/video server.Data center can provide for the user service of similar blog and microblogging, makes the user can pay close attention to mutually and push certain content, for example advertisement or activity.
Module 9: remote terminal.
This module realizes user's Remote Acquisitioning monitoring audio/video content, and to controlling and communicate by letter in audio-video collection module, audio/video server and remote data terminal.
A kind of embodiment of remote terminal is: desktop computer, the user by browser or local use finish audio-video monitoring and with control and the communication function of other objects.
A kind of embodiment of remote terminal is: mobile hand-held device, for example mobile phone.The user by browser or local use finish audio-video monitoring and with control and the communication function of other objects.
Below be the embodiment that replenish relevant with function:
1, monitoring has Real Time Monitoring pattern and playback mode.
Wherein a kind of embodiment of Real Time Monitoring pattern is: vehicle-mounted audio/video server control audio-video monitoring module Real-time Collection audio-video frequency content, by data-interfaces such as USB, perhaps the audio-video interface such as CVBS analog composite returns to server.Server is according to the type of user's used terminal, and network speed adjusts video definition, for example high definition and single-definition, and adjust frame frequency, to adapt to user terminal displays screen and bandwidth.It is after finishing above-mentioned steps that audio/video server provides a kind of embodiment of monitor service, and server is finished monitoring with video push such as WLAN, WiFi or the mobile communications networks such as 3G, 4G by certain communication interface to this locality application of user terminal.It is that vehicle-mounted audio/video server is issued audio content by the HTTP service after finishing the audio, video data adjustment with the form of embedded web page that audio/video server provides the another kind of embodiment of monitor service.
Wherein a kind of embodiment of playback mode is:.
Vehicle-mounted audio/video server control audio-video monitoring module Real-time Collection audio-video frequency content, by data-interfaces such as USB, perhaps the audio-video interface such as CVBS analog composite returns to server.Server is set respectively processing according to video interface and user:
Situation 1: input video is without the compression original video.Server is set according to the user, adopts the video processing engine such as ffmpeg, Streaming Media that original video is compressed, and stores on the hard disk.
Situation 2: input video is to have compressed original video.Server is set according to the user original video is decompressed, and recompresses after the parameters such as adjustment resolution, and stores on the hard disk.
Situation 3: in the compression process of situation 1 and situation 2, add auxiliary data, for example recompress behind gps data, the time stamp data.
More than be video acquisition and storing process.The main distinction of playback mode and real-time mode is, after video content obtains, at once playback is not to the user, but set and program request according to the user, when the user needs, by certain communication interface, such as WLAN, WiFi or the mobile communications networks such as 3G, 4G video push is finished monitoring to this locality application of user terminal, or by the HTTP service audio content is issued with the form of embedded web page.
2, the audio-video collection pattern has timing acquiring pattern and triggering collection pattern.
Embodiment 1: the timing acquiring mode.The audio-video collection module is in the continuous acquisition state, and vehicle-mounted audio/video server adopts polling mode to obtain one by one the audio, video data of each audio-video collection module.
Embodiment 2: audio-video collection module triggering mode.The audio-video collection module has built-in trigger module, acoustic control trigger module for example, when passenger vehicle is subject to unusually contacting, vehicle carried device triggers, the sharp-pointed buzzing of the narrow frequency that alarm sends triggers the built-in trigger module of sound collection module, trigger the audio-video collection module and gather audio, video data, and return to vehicle-mounted audio/video server.
Embodiment 3: vehicle-mounted audio/video server triggering mode.The audio-video collection module returns to vehicle-mounted audio/video server with the audio, video data that collects, and determines whether to trigger passback by server.When passenger vehicle was subject to unusually contacting, vehicle carried device triggered, the sharp-pointed buzz of narrow frequency that alarm sends, and vehicle-mounted audio/video server judges whether to trigger this audio-video collection module passback audio, video data by certain algorithm.
3, audio/video server can be incorporated into auxiliary data audio/video flow inside.
A kind of embodiment of this function: server obtains the geography information related data from the GPS interface, is embedded into image captions form in each frame of video image, and other auxiliary datas, for example license plate number, temporal information also embed simultaneously.
A kind of embodiment of this function: server obtains the geography information related data from the GPS interface, is embedded in the audio stream with image captions form, and other auxiliary datas, for example license plate number, temporal information also embed simultaneously.Then arrange according to the user and carry out voice broadcast.
4, the network service of audio/video server.
Data switching networks can be formed between the audio/video server, also data switching networks can be formed between audio/video server and the remote mobile terminal.A kind of embodiment of this function: streaming media server and Web server are installed on the audio/video server, between the audio/video server and and remote mobile terminal between adopt Web Service or certain agreement to realize the transmission of small data quantity information.The agreements such as the big data quantity information such as audio-video frequency content employing p2p exchange.Audio-video frequency content can be browsed for the user in webpage embedded mode by streaming media server.Audio-video frequency content can be given terminal by server push by the local mode of using of remote mobile terminal, is perhaps downloaded by user oneself.
5, the database service of audio/video server.
An embodiment of the database of management audio, video data and other data messages is the databases of increasing income such as employing MySQL.Database has authentication system.The memory location of audio, video data in vehicle-mounted audio/video server storage medium is stored in the database, and user or data center can be by the Database query languages such as sql portable terminal retrieval from database, inquiry, download and management datas from the databases of increasing income such as MySQL.
6, the audio frequency and video processing capacity of audio/video server.
Vehicle-mounted audio/video server be that video processing function is to realize by the enhancement service software on it.A kind of embodiment is the server of increasing income that vehicle-mounted audio/video server adopts certain Linux type, CentOS for example, perhaps Ubuntu, the mode that adopts PHP to strengthen plug-in unit provides audio frequency and video to process service, or adopts the audio frequency and video processing engine such as FFmpeg that this service is provided.The flow process of service is that audio/video server is preserved pending audio, video data, and the user sends request by Web to server, and PHP response and control audio frequency and video enhancement service software are processed, and result is returned to the user.
7, the realization of remote data center.
A kind of embodiment of remote data center adopts Web server.A kind of embodiment of this server adopts Linux or Unix operating system, the http-server such as Apache or NginX software, and PHP service, can respond user's Web service request, log-on message and the data storage location index of the database storage users such as MySQL, vehicle-mounted audio/video server arranged.An embodiment who communicates by remote data center between different users, the different vehicle-mounted audio/video server is, a plurality of users initiate the Web request to distant place data center, control box remote data center application with needs, the response user of data center request, and set up network service between a plurality of vehicle-mounted audio/video servers, between a plurality of vehicle-mounted audio/video servers according to control transmission and the sharing data of remote data center.
8, portable design.
Portable video testing equipment of the present invention, implementing one of feature is that test module adopts Ni-MH battery or lithium battery as energy storage device.When external power supply was arranged, for example vehicle power adopted the external power supply power supply, simultaneously battery is charged.During without external power supply, adopt powered battery.
Below will compare, verify feature and the advantage of other video audio/video monitor and control system on In-vehicle networking audio/video monitor and control system of the present invention and the market:
(1) system is fit to vehicular applications through optimizing.
Other current video monitoring systems are made of camera, video switching matrix, central control board etc. usually, and the equipment bulky complex is not suitable for vehicular applications, is only suitable for the video monitoring of fixed location.What these video monitoring systems adopted is the monitoring mode of traditional " center-control ", finishes the monitoring of each control point in Control Room.What this patent adopted is " distributed " monitoring mode, and each vehicle-mounted audio/video server is responsible for monitoring host vehicle, by means of communication such as mobile communications networks monitoring content is offered user or remote data center again.The In-vehicle networking audio/video monitor and control system that this patent proposes need not video switching matrix and Central Control Room, no matter can monitor under Vehicle Driving Cycle or parked state.
(2) has simultaneously the video monitoring sound monitoring.
Current video monitoring system lacks sound monitoring usually, does not have car alarming and triggers the function that monitoring starts.The vehicle-mounted audio/video server that this patent proposes can be set according to the user, by the alarm sound triggering monitoring startup of alarm, and has Real Time Monitoring and two kinds of mode of operations of recording playback monitoring.
(3) can in the situation of non-transformer power supply, work.
The vehicle-mounted audio/video server that this patent proposes has internal cell, and when connecting the Vehicular charging device, server and audio-video collection module all adopt the vehicle power power supply, when vehicle is flame-out, adopts the vehicle power power supply.And current video monitoring system relies on the 220V supply network usually, and camera and central control board are without cisco unity malfunction under the electric power thus supplied.
(4) powerful networking communication.
Current video monitoring system only has the network communication mode between middle control center and the camera usually, but is " information island " between video monitoring system, does not have network communication mode.The vehicle-mounted audio/video server that this patent proposes has powerful networked communication function.Vehicle-mounted audio/video server and user's portable terminal, fixed terminal have consisted of a monitor network, and server can provide monitoring content by Web, and also can use by this locality of user terminal provides monitoring content.Also consisted of a content delivery network between the vehicle-mounted audio/video server and between vehicle-mounted audio/video server and the remote data center.A kind of exemplary embodiments is after vehicle-mounted audio/video server authenticates by data center, to set up data exchange channel between the vehicle-mounted audio/video server, shares content.The user also can pass through terminal landing remote data center, the setting of organize content and vehicle-mounted audio/video server.
In sum, the present invention proposes a kind of In-vehicle networking audio/video monitor and control system, this system is made of audio-video collection module, vehicle-mounted audio/video server and remote data center and remote terminal.A plurality of audio-video collection module rack are located at the diverse location of passenger vehicle, and the audio-video signal that collects is sent on the vehicle-mounted audio/video server, accept simultaneously the control command of server.Server can obtain the geographical position of vehicle, and with relevant information with the video content storage of packing.Server can carry out exchanges data with long-range other servers and data center.Consist of the switched data network on the discrete monitor network between a plurality of servers and the remote data center.User terminal can adopt the monitoring mode based on Web, also can adopt based on the local monitoring mode of using of particular terminal.Whole system adopts the pattern of vehicle power and the complementary power supply of storage battery.That this technology also can be used for is vehicle-mounted, building and other all networked audio/video monitor and control systems.
More than be in order to make those of ordinary skills understand the present invention; and the detailed description that the present invention is carried out; but can expect; within not breaking away from the scope that claim of the present invention contains, can also make other changes and modifications, these variations and revising all in protection scope of the present invention.
Claims (10)
1. networked audio/video monitor and control system, this system is made of audio-video collection module, audio/video server, remote data center and remote terminal.A plurality of audio-video collection module rack are located at the diverse location of monitored object, and the audio-video signal that collects is sent on the audio/video server, accept simultaneously the control command of server.Vehicle-mounted audio/video server to audio, video data encode, storage after the operations such as conversion, compression.Server can obtain geographical position and the time mark of vehicle, and with relevant information with the video content storage of packing.Server can carry out exchanges data with long-range other servers and data center.Server can be according to the audio-video frequency content after the packing that user's setting returns or in real time transmission is stored.Server has Real Time Monitoring and two kinds of patterns of playing back videos.Server can carry out exchanges data with long-range other servers and data center.Remote terminal can be desktop computer or portable terminal, the audio-video frequency content after can obtaining to pack by wired or wireless mode, and can manage and the audio-video collection module is carried out remote control audio/video server.
2. audio-video collection module according to claim 1 is characterized in that:
Can be fixed on the diverse location of passenger vehicle inside, by vehicle window the outside be monitored.And have audio frequency, video or audio-video collection module, the image that collects can be returned to the Vehicular video server by audio-video interfaces such as analog composite, USB or HDMI, and by USB, bluetooth, WLAN, WiFi or other wired or mobile communication carries out exchanges data, and accept remote control.
3. audio/video server according to claim 1 is characterized in that:
The module that has simultaneously data such as obtaining outside audio, video data and geography information, and be used for wired and wireless communication network interface with other remote object swap datas.Server can be integrated these auxiliary datas, offers simultaneously the user with audio, video data.These modules belong to the part of vehicle-mounted audio/video server, and function is by wired or wireless interface vehicle-mounted audio/video server and external object to be communicated.External object comprises the acquisition module as audio-video source; GPS module as the geographic information data source; Control the remote terminal of carrier as the user, the typical case is such as long-distance on-line PC and mobile phone; Other vehicle-mounted audio/video server and remote data terminals.Wired or wireless interface is analog composite, USB, HDMI, GPS, bluetooth, WLAN, WiFi, 3G/4G and above mobile data communication network or other wired or mobile communications for example.
4. audio/video server according to claim 1 is characterized in that:
A plurality of audio/video servers can be mutually between swap data, network consisting; Audio/video server and remote mobile terminal can swap datas, two-way or unidirectional control, network consisting; Can also with remote data center swap data, network consisting.GPS。Communication mode can be USB, bluetooth, WLAN, WiFi, 3G/4G and above mobile data communication network or other wired or mobile communications.
5. audio/video server according to claim 1 is characterized in that:
The user can be by Web or the local monitoring vehicle condition of using of portable terminal, and monitoring has Real Time Monitoring pattern and playback mode.So-called Real Time Monitoring pattern refer to vehicle-mounted audio/video server according to certain frame frequency with monitoring image or other data, for example play in real time in the geographical position, for user monitoring.So-called playback mode refers to that server stores the data such as audio frequency and video and geographical position in the memory into first, in follow-up time, control according to the user, select certain section certain frame frequency that the data communication devices such as audio frequency and video and geographical position are crossed local application of Web or portable terminal and offer the user, for user monitoring.
6. audio/video server according to claim 1 is characterized in that:
The audio-video collection pattern has timing acquiring pattern and triggering collection pattern.So-called timing acquiring pattern refers to that audio/video server triggers the audio-video collection module according to certain time interval and gathers, stores and play, and referring to server, the triggering collection pattern receives certain signal, for example behind the auto alarm the tinkle of bells, trigger the audio-video collection module and gather, store and play.
7. audio/video server according to claim 1 is characterized in that:
Have database and manage audio, video data and other data messages.Database has authentication system.Other data messages such as audio, video data and geographical position are stored in the server, and user or data center can be by portable terminal retrieval from database, inquiry, download and management datas.
8. remote data center according to claim 1 is characterized in that:
Have database and manage all audio/video servers.Database has authentication system, the authority of leading subscriber login.Remote data center has Subscriber Management System, has audio frequency and video and other data content management systems, can consist of a monitor network with a plurality of vehicle-mounted audio/video servers, and the services such as exchanges data are provided.Vehicle-mounted audio/video server can be uploaded audio, video data and be kept in the remote data center through the authentication of remote data center.Vehicle-mounted audio/video server also can be downloaded data own or that other vehicle-mounted audio/video server is preserved from remote data center.
9. vehicle-mounted audio/video server according to claim 1 is characterized in that:
Has energy storage device, for example battery.In that use external power supply power supply in the situation of external power supply is arranged, do not having in the situation of external power supply, adopt the energy storage device power supply.
10. vehicle-mounted audio/video server according to claim 1 is characterized in that:
Has the audio frequency and video image processing function.The typical case comprises object recognition of face, car plate identification, guideboard identification etc. such as video image identification.The typical case comprises object speech recognition, alarm identification etc. also such as audio identification.
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