2、wireless network way
四、Solution:
System feature:
1）large quantity of the terminal, wide spread.
This media running system use large screen LED as the display terminal, large scale terminal distribute in various big cities all over the countries, and each city separated in various districts, each district distribute dozens of terminal, through man power to renew the play content and take in charge of the daily mantainance, therefore the scale of the whole system is very large, require high management, such large scale system of the release system the stability and reliability of the terminal requires very high.
2)Do not have broadband network environment
Because of the position particularity of the play terminal and the other reasons, each play terminal and head quarter and each office do not have communication network, have to rely on maintainace people to renew all the play content and terminal maintain, this way no matter headquarter or each office can not monitor the running status of the terminal in real time, can not monitor on line or manage through network, therefore request the play terminal’s high stability and reliability, including the terminal hardware’s stability and the software’s stability.
3) Screen size non standardization
Because of the outdoor media uses full colour LED or plasma and so on large size screen displaym, and the size of the screen usually need to custom made according to the current install environment. So the screen size maybe non standardization, and maybe in one system there are various sizes of the screens, the resolution of the screen may be is not the usual 1024×768、800×600 and so on non standard, so require the release system’s play terminal can adjust the resolution flexibly in the vedio output, or can be set up various resolutions for option.
4) Construct guard tour system
Guard tour system aims at constructing a set of guard tour automatic confirmation system through this information release system platform, With the system to achieve and maintain personnel assessment of the country offices, terminal timing automatic generate guard tour information, maintainance people must record the information in the preset-time, report to the headquarter at fixed period, the headquarter according to the system atomatic generate information to make sure whether the maintainance peple have arrived in the preset-time.
5) Terminal of the installation environment is poor
Because the places of the screen install may not has the machine room and the office’s environment, the environment relatively poor, In temperature, humidity, space, installation position and so on various requirements terminal set-top box appearance, size, heat dissipation, moisture, dust, shock and so on can put can meet the requirements of the environment.
6)
6）Strong expansion ability
System’s upgrade including the increase quantity of the terminal set top box, the increasing insert terminal type, increasing terminal play media content formats and the obligate of the CDMA wireless data transfer function, the establish of one set system must be satisfy the reuqirement of the system’s future develop dilatation upgrade. Information and communication technology is developing rapidly, and the streaming media technology in the progressive development, social environment in the constant changes, the needs of the customers in the unceasing enhancement, Therefore such a multi-function information release system must consider the construction of the whole system expansion ability, this relationship to the system construction of the return on investment and long-term development of the system.
Suggest solution:
According to outdoor media system’s feature and our product function, we suggest each display terminal configure our company’s one AMS-H8621HD as the play terminal of this multi-media information release system. Each office install a set client-side software, in the headquarter set up one set of manage software and server software. This play terminal is a kind of embedded terminal, use hard decode special chipset, single board without fan, and use embedded LINUX operate system, both hardware and software are steady and reliable, small size, easy to install and maintainance, low failure rate. (the specific parameter please refer to the description of products)
System function and the realize way
Our system is a multi-media information release system based on WAN or LAN，almost support current all the main streaming media file format, it can let the enterprise, big organization, operator or chain store establish a multi-meida information release system that can release vedio, picture, text, flash, webpage and so on multi-media information based on network, provide high quality multi-media information service for the user.
System function:
1. Support play main format AV, picture, PPT/TXT, Flash, HTML
2.Support the scrolling text notice, school news, support multilingual
3.Dynamic real-time examination information, conference arrangement, can release the information in full screen or separated screen.
4. Support browser, can gain the data from WAN and LAN
5. Support LED display ;
6.All the play, control and management are realized by the manage software
7.Through network download and play the content, no need manual intervention.
9. Support flash webpage and JSP/ASP and so on application program based on webpage
10. Support separated area, separated group, separated grade management flexible manage mode;
11. Support various factories, various standard interface DVI/VGA/S-VIDEO/RS232 display equipment;
12. Can realize each terminal distinguish management, play different content;
13. In theory there is no limit to the number of terminal access, and to each terminal download speed management;
14. Through the management software can realize the play, pause, restart, delete file of the terminal;
Realize way：
1. Guard tour system realize way describe:
Guard tour system makes use of the existing multi-media information release system platform, add a new functional module in the existing function. The realization of the system is divided into the server and playing terminal two parts. In the play terminal, according to date, timing, teminal number, MAC add and so on, system can generate a 4 emic assess code under a certain arithmetic, such as 200708310930SHLED00100:0a:e6:00:0d:d3, these character string after calculation generate like 2020 similar assess code, according to the management requirement, every day and in every terminal three times or more by setting good time (9:30;13:30;17:30), Automatic subtitles that way in designated areas, each time the display period can be set up to 20—30 minutes, maintenance personnel in time to the site of the string and record in time to messages to headquarters reporting system. All the guard tour information in headquarter generate independently, when the system receive the information uploaded by the maintainance personnel, input to the management software, system can inquiry and checkout automatically, whether is legal will feedback the related result.
Diary information reporting system
Information generate
Information generate mainly in the play terminal, according to the format of the terminal customize the formation of regular log statements, when the maintainance people renew the terminal play
content The system automatically derived from a terminal to the mobile storage devices, through the office of the client software to the headquarters of the database server log statements, the manager can directly browse, enquirey and derive. Daily record’s date including terminal number, time, xxx file begin to play, xxx file play finish, the content begin to renew, the content renew finish,
Boot time, derive daily record information and so on, can configure basic information’s daily record output according to the manage requirement.
Information upload:
After generate the daily record information, everytime update terminal play content, When the system move storage device new contents to update to after the completion of the terminal, will automatically derive the daily record information to the terminal, store as the fixed file format, through office client-side software maintainace people directly upload to headquarter server’s daily record data base, the manager of the headquater can directly browse, enquiry, derive through manage software.
2. Serial port control function ( existing )
Serial port control function is through play terminal selfcontained serial port, and with the serial port equipment docking, according to certain communication protocol to process the function of communication and data output. In the system can be used to realize the control of outdoor LED screen, In the screen and terminal building a good communication agreement, through serial port output fixed data LED screen, and then control the Switch machine, adjust the brightness and time proofread and so on function.
3. CDMA clock synchronization and extended function (existing)
4.
Clock synchronization:
· CDMA clock synchronization function use CDMA communication mudule connect to CDMA wireless network, pick up CDMA clock function. Because in the whole running system, headquater and the terminal is wireless status, can not on line monitor in real time, therefore CDMA clock is very important, CDMA clock can provide accurate, real time, synchronous clock, is the system especially the terminal, in playing, daily record generate, synchronization, proofread and so on must have accurate time reference.
Terminal on line monitor:
Terminal on line monitor is one extended function of CDMA communication, make use of each terminal through CDMA wireless communication module connect to wireless network’s function, considering that CDMA currently the download speed is low, not suitable for a mass of file transmit, but can make use of the CDMA’s position function, when the terminal running normally, the system can through CDMA network upload a confirm signal in preset time to show that the terminal is running normally. In this way the headquater can receive the running status information of all the terminal, can by the light of the light and can destroy the terminal to show online and offline, monitoring the terminal’s running status, establish a simple monitor system.
Document transmission function reservation
Because of the play terminal currently support such as CDMA/GPRS/EDGE and so on wireless communication and data transmit function, in the condition which do not need to transmit the data, can turn off this function, with the improvement of the wireless network technology level, the expansion of the resource, the mature of the 3G and so on wireless transmittal’s band width will become better and better, When need to transfer the data , activate the function, so the current CDMA resource can be the reservation function of the future document transmit and download, in this way not only can save the resource, but also is good for the extention of the system.
5. Time switch machine and play synchronous:
When there is the CDMA clock synchronization function, each play terminal can synchronous clock, Can the contents of the play and timing synchronization switch machine, by remote control can directly set the switch machine of time of each terminal.
System security policy
The whole system is composed by headquater, office and play terminal three parts. The headquater configured server software and manage software, office configured with manage software, play terminal including special system software. Therefore the safety manage of the play content must run through the process of the whole file transfer, must make sure every link is reliable, safe and steady.
File transfer process as the following picture：
limits of authority manage gurantee the safety strategy:
User login
User login with the correct name and password are the basis of system limits of authority, including the headquater and each office’s all system software user. Make sure external or illegality user
carry out illegal operation, destroy the system or improper operation.
Content examine and verify
Content examine and verify belongs to system limits of authority function module, can set up user in the headquarter’s manage software, set up the limits of authority according to the role, can be divided into manager and assessor, there are independent user names and passwords. The manager mainly responsible for editing the content, make the play scedule, when the play schedule is ready, manager through the software can deliver to the assessor directly. The assessor examine and verify the content of the play schedule he received, checking whether it is legal, if so, he can directly upload it to the sever, before clicking upload the assessor must input the legal password to normal encryption to the server, this step is to make sure the release content’s safety, gurantee the releasing content is legal, will not cause effect to the client and the company, not violate the coutry’s laws and regulations, reduce the risk of company operations, this is the reliable operation for the system entrance.
Content transmission guarantee security strategies:
In order to guarantee the safety of the content, In addition to verify the content in the manage side through limits of authority, the safety strategy in the file transfer process is very important, too. Including go by network’s transfer, therefore the system through the following three aspects measurement to guarantee the reliability of the file transfer process.
1. Content encryption
Content encryption is when the well set up Playlist through the auditors review confirmed legal, before uploading to the server the manage software encrypt the content automatically, the arithmetic of the cryptographic adopt currently market main stream 3DES 128 bits, after encryption system according to certain arithmetic automatically generate a Public Key file and saved in the server, Public Key including the play terminal hardware leave factory information, such as MAC and so on. Every time generate the new playlist will automatically generate a new Public Key, And the office’s manage software and play terminal system are a encryption file which can be discriminating, This document is encrypted processing relatively very safe, becuause the server itself has FTP service, only the client-side which installed the manage software and the person who has the right password can download, forming the special system, guarantee the safety of the content transfer.
1.U disk authentication
This link is when the maintainance person of the office hope to download and play the content from the server, in every time when using, The system to the USB interface for various mobile storage equipment for the authentication, the authentication including to steps, first is the client-side software which installed in the office can automatically obtain the serial number of the mobile storage device, and then upload the serial number to the server side, when the server side get the serial numebr will automatically generate a UID number; second is formatting the USB device and download, When formatting USB devices will generate the system when the UID number and server on the server Public Key encryption documents written to USB devices. System get the Public Key confirmation only legal document can be continued to download playlist to the USB device, in this way the whole download of the play content is finished, and can use this USB device to renew the play content in the terminal. Every time before download system will formatting USB and will use Public Key to confirm Whether there is a legal status to download, thus can gurantee the unlawful client side or only with account and passcode can not download and operate, thereby in the office level guarantee the saftety of the file transfer.
- Terminal authentication
Terminal authentication is before renew the content to insert terminal USB mobile storage equipment for legitimacy authentication, The authentication basis is UID and Public Key, only generate in the headquater’s Public Key and the UID wrote in the office is legal, can be discriminated
and confirmed by the terminal system’s terminal will automatically download the new playlist to the play terminal hardware, and deciphering the cryptographic playlist then automatically play the content in the playlist.
Analysis from the aboved process, this is a three-level authentication file encryption system, from the headquater---office---play terminal, all is necessary, lack one of the link authentication will be regarded as unlawful, only the content obtained by the system interior nomal flow can play normally, any foreign, unlowful content can not access into our system.
System advantage analysis
1． Support twice develop in the existing system
The existing multi-media system already is a set sophisticated mature multi-media release system based on network, may customers are using now, meanwhile there is stand-alone version release system apply to customers both home and abroad, therefore in the currently basis of the system intergrate and add some functions can fully satisfy the requirement of outdoor media advertisement, the system supports twice develop.
Steady and high reliable of the play terminal
According to the requirement and the feature of the outdoor media advertising system , the whole system requires the terminal with high stability and reliability, because of the AMS-H8621HD’s play terminal adopt single plate embedded hardware structure, professional hard decoder chip, without fan, low consumption, small size, easy protect in heat dissipation, water proof, dustproof and so on, the software of the system adopt embedded Linux operation system, fine stability and reliability, Independent copyright
1. Strong upgrade dilatation ability
After the establishment of the system, we must consider the system’s upgrade and dilatation ability, the upgrade of the system divided in two parts, one is from currently manpower maintainace way smoothly upgrade to network manage way, therefore requires the system completely has the reservation of network function, and the system’s architecture can completely satisfy from the existing architecture upgrade to network architecture, considering the scale and the terminal quantity of the whole system, if reach to thousands of unit and distribute in multi cities, the upgrade in addtion to consider the network function of the play terminal, the system must be able to support
multiple management mode, support branch center and branch center server mode, this point can not be ignored. Secondly, because of the customer’s requirement and the market environment is changing, the requirement will gradually increase and enhance, maybe today only need the basic function, but after a period of time needs to increase new function to satisfy the customer and the system running requirement. So the upgrade ability of the system concern to the rate of return on investment and returns on investment of the system, in the fast developing technology era also need to consider this question.
2. Support multiple network insert platform.
System and the terminal currently already support multiple network insert
Way, wired LAN, ADSL and wireless CDMA/GPRS/WLAN/EDGE/UMTS etc, not only can satisfy present CDMA clock synchronization requirement, but also can support future wireless’s upgrade data transmittal requirement,save the investment cost and at the same time satisfy the upgrade requirement in the near future.
3. High cost performance
The whole system no matter the software and hardware not only can satisfy the current system running requirement but also can satisfy the future system upgrade requirement, and the cost of the terminal hardware is far less than the cost of industrial computer use, the performance is higher than the industrial computer, so the cost performance of the whole system is pretty high.
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