model XBPA-5000B screen size 15-17 inch custom size on request Chassis color Black / iron gray / optional integrated touch keyboard Screen color TFT262144 true color Control method 1024 x 768 resolution LCD resistive (five-line) touch screen working environment Ambient temperature: 5°C～50°C; Relative humidity: 20% to 80% relative humidity, no condensation Motherboard Intel NM10 chipset, X86 architecture Standard interface 1×PS/2 interface; 6× serial port; 1× parallel port; 1×VGA hard disk SSD Solid State Drive RAM DDR3 800MHZ 4G (As the product continues to upgrade, capacity will continue to increase) Network card Realtek RTL8103EL, 1000M CPU Intel ATOM D525, Dual-Core, Five-Thread, 1.8GHz System audio signal signal to noise ratio LINE: 70dB; MIC: 60dB System audio signal distortion 1KHz<0.5% System audio signal standard input level LINE: 300mV; MIC: 5mV System audio signal standard output level 0dBV Self-power consumption AC～220V/50Hz/300W Software operating platform Windows 2003server size 484 (width) × 300 (deep) × 310 (high) weight 14.28Kg WUXI SHINDEN MODERN INTELLIGENT TECHNOLOGY CO.,LTD , https://www.myshinden.com
Digital IP network broadcasting system in a broad sense
The so-called streaming media belongs to the category of media format, its carrier is internet, and its transmission existence mode is streaming. Such as: audio, video, multimedia files and so on. Streaming media has its own unique form of playing, that is, it does not need to download the whole file before playing, but only stores the content of the beginning part, and then buffers the media data when the network buffers the playing data. Will output. It can be said that the characteristics of streaming media data are as follows: Only in some cases, it will start slowly. In addition, another significant difference between streaming media and print media is that streaming media can be downloaded while playing. Taken together, the most salient features of streaming media can be classified as "interactive" and "interaction" is also the reason why the Internet is really popular.
Digital IP Network Broadcast System Control Center Server Host Software IP Network Broadcast Control Center XBPA-5000B 
Product use 1, IP network digital broadcast server software operating carrier, is the broadcast control center;
2, installed in the main control room, the entire broadcast system for real-time and effective management.
Features
1. Industrial-grade cabinet chassis design, the chassis is made of steel structure, and has high antimagnetic, dustproof and anti-impact capabilities;
2,15-17 inch LED LCD display, built-in 5-wire industrial reinforced touch screen, easy-to-use touch screen control;
3, industrial-grade dedicated motherboard design, dual-core, four-threaded, ultra-low power embedded industrial-grade processor, faster processing, stronger operating performance, can be stable for a long time, with trackball, integrated keyboard, without External keyboard and mouse devices can be used;
4, built-in large-capacity SSD solid state drive, with anti-vibration, anti-fall, read and write speed, low power consumption;
5, built-in 6 groups of industrial asynchronous transmission interface, built-in 4 sets of universal serial bus, high 480M transmission rate;
6, support for 4-channel sound card, support for dual graphics cards, external large FullHD display device;
7. It has a short-circuit triggering start-up running interface, which is used for timing drive startup operation to achieve unattended function;
8, server software constitutes a system management and control center, the server software uses a background system service to run, is the standard enterprise-class server operating mode, the boot system can automatically run, compared to the software running in the front interface of the software has a higher stability And reliability;
9. With backup function, increase backup IPC can realize server software data sharing, real-time detection of the working status of the main IPC, and achieve automatic failover of main and standby machines, which can completely replace the management control function of the main IPC;
10. Supports DHCP, compatible with any network structure such as routers, switches, bridge gateways, modems, Intelnet, 2G, 3G, 4G, multicast, and unicast. 
Technical Parameters:
IP Network Broadcasting System Mobile Client/Dog XBPA-5000K
Product Usage
1. The broadcasting system client software runs on ordinary commercial computers and manages remote operation platforms such as program broadcasting, audio collection and broadcasting, timing programming, broadcast speech, and program library management.
Features
1. Digital mobile client software based on Windows common computer platform, supporting Win98 ~ Win8.1 and other system platforms;
2, portable U disk design, easy to carry, support USB interface, plug and play operation is simple;
3, the client software uses the network (LAN, WAN) to remotely log on to the server, supports multiple sets of client software to log on to the server at the same time, each set of client software work independently;
4, support the client software remote manual, automatic program broadcast and paging broadcast, support for remote login to the server program library on-demand song playback;
5, set the scheduled task to submit the server, automatic broadcast, when the unplug the mobile client can also regularly perform scheduled tasks;
6, support the client software to remotely add audio files to the server, can create multiple program library files at the same time, and has unique management rights;
7, support terminal program ring, and automatically record the presence of the server;
8. Intuitive user interface, real-time display broadcast terminal working status and task volume, support up to 5 or more task volume control.
IP network broadcast system package XBPA-5000S
Product Usage
1. The broadcasting system management and control software, installed in the network broadcasting control center or computer, is an integrated management platform for data exchange, system operation and function operation of the broadcasting system. Software included wireless remote control software, phone broadcasting software, fire linkage software <br> <br> Features
1. The software is the core of the entire system, supporting the operation of broadcast terminals in the system, basic parameter configuration of broadcast terminals, and responsible for audio streaming on-demand services, scheduled task processing, terminal management, and rights management functions;
2. Manage program library resources, provide timing playback and real-time on-demand media services for all terminals, and respond to each terminal's program playback request to provide data interface services for audio workstations;
3, support up to 1000 unicast tasks or program transmission, support for distributed deployment of multiple servers and server clusters;
4, support for custom terminal name, unlimited grouping, unlimited timed tasks, unlimited timing grouping, support unlimited audio collection and playback, timed playback, a key call and play;
5, support for multi-user, any level of sub-control management, support for an unlimited number of monitoring terminals, multi-task real-time monitoring, support for unlimited environmental monitoring capabilities, program library supports unlimited files and unlimited folder management;
6. Support security patrol sign-in management, support affiliate terminal management functions, support conference scheduling function, support task re-entering intelligent identification function, and reduce the code rate at geometric multiples;
7, support the program offline scheduled broadcast tasks, support remote manual, intelligent control terminal power;
8, support and support for mobile WIFI on-demand, support for any optional playback terminal;
9, support for all-day unattended work, support power data protection, support for automatic discovery of bound terminals, support for custom heartbeat data, support online and offline reminder, support bubble pop-up reminder;
10. Software supports third-party platform embedded development, provides standard MFC dynamic link library, and integrates with other system platforms (such as building visitor system, surveillance video system, etc.);
11, support for any single, grouped calls, music playback, timing, ringing function, support for remote wireless remote control, and supports intelligent combination keys, support for remote volume adjustment, playback, selection song function;
12, support the system to log on, log off the self-start function, does not affect the timing of ringing and other functions to run, support background recording, support for remote storage, support for intelligent task recognition to start recording;
13, support for digital audio intelligent identification, support for automatic re-encoding, support for damaged file identification, professional broadcast room management software, support for temporary tasks to save and edit and then call;
14, support custom terminal partition shortcut keys, support up to 5 or more task volume;
15, support virtual terminal access, support portable mobile client operation;
16, support the whole area, district fire linkage, support fire N±N mode, support for artificial alarm and digital alarm mixing;
17, support for unified management of terminal login password, and support the management of the scope of authorization, 10 priority management, and support for easy automatic authorization;
18, Support PSTN broadcast, built-in humane Chinese voice, support mobile phone, landline, PHS, ocean phone broadcast, compatible with global telecommunications system access;
19, support for voice broadcast SMS, support mobile or linked to the specified number or public number information sent;
20, support task management, session management, hardware management, user management, authorization management, media management, network adaptive management;
21, support a full range of log query, filter, retrieval, output, terminal startup, playback, management, control, off-line, timing, trigger, fire, call, intercom, help, alarm, remote control, demolition;
22, the use of standard optional installation module, software package with system server software, relay server software, remote client software, broadcast client software, fire alarm software, wireless remote control software and telephone broadcasting software, etc.; support customers Customized installation is selected to minimize system resource consumption and increase system operation efficiency. It is the most flexible broadcast software installed in the industry.
23, using the background system service to run, is the enterprise-class standard server operating mode, the boot system can automatically run, compared to the software running in the front of the interface has a higher stability and reliability;
24, Windows service mode, support Win98 ~ Win8.1 and other system platforms, built-in 7 system services, and support system watchdog;
25. The system is compatible with any network structure such as routers, switches, bridge gateways, modems, Intelnet, 2G, 3G, 4G, multicast, and unicast.
Digital IP Network Broadcast System Development Process
2.1RTSP - Real-time streaming protocol Real-time streaming protocol is one of the streaming media protocols. It is jointly developed by Real Networks, Columbia University, and Netscape Communication and has now become the IETF standard. The characteristic of this protocol is that it is a control protocol for transmitting information through real-time data. Its definition is derived from the fact that his own application adopts a one-to-one or one-to-many way to transmit using network IP. Multimedia data to complete. RTSP as a protocol itself needs to rely on RTP or TCP for effective data transmission, and it alone can control the knowledge of its own data transmission. In this way, it will have a clear difference compared with HTTP, as follows:
RTSP is to rely on RTP to complete the streaming media data transmission, which is characterized by two-way interaction; and HTTP is to rely on HTML to complete streaming media data transmission, which is characterized by a one-way protocol. Through this comparison, we can clearly see the advantages of RTSP, in addition, he also extended its function, namely: It can complete the transmission of audio or video data. It can be said that this agreement has broadened the path of transmission channels of network broadcasting, giving them the opportunity to choose, so that they can choose according to their actual needs whether the next link method is TCP or UDP. Here, in order to ensure the reliability of control commands, most people choose TCP links.
Digital IP Network Broadcast Intercom System Session Protocol
The abbreviation of the session description protocol is SDP. It is published by IETE on the way of RFC2327. The significant function of the SDP session-familiar protocol lies in the description of the multimedia session, that is, he can go to the announcement and invitation of the implementation session of Ang-weifang. Wait. It can be said that the emergence of the SDP protocol can effectively activate the multimedia conference, that is, to facilitate the effective communication of the streaming media information, so that the recipient of a specific session description participates in the conversation. However, it should be noted that this protocol cannot be used to negotiate media coding methods. At present, this protocol is used more frequently on the Internet. The reason is that in the context of this network environment, a typical multimedia session presents a group of streaming media in a specific period of time. Its characteristics are many-to-many, that is, he The description of the object is mainly the language of the media film and control commands, and the value of the SDP description language in the streaming media playback process lies in that it communicates through the language.
IP Network Broadcast System Protocol - Real-Time Streaming/Control Protocol
As a kind of protocol, real-time transport protocol is mainly a protocol for transmitting multimedia data on the network. His scope is narrow, and its release form is also limited. There are only two types: RFC1889 and RFC3550. This has made his characteristics determine that he is the application layer transmission protocol. The lower layer linking it is implemented through UDP, and other connection methods can also be selected, such as: TCP, ATM and so on. In general, RTP itself can only control the real-time data in real-time and cannot control the sequential streaming media packets in real time, and it cannot control traffic or congestion to provide information, that is, everything. The streaming media transmission work must be systematically implemented by the associated protocol of this protocol.
RTCP Chinese means a real-time transmission control protocol. His core value lies in the conscious control of streaming media data applied to the network in two forms: media server and player. That is to say, during the implementation of the protocol session, the data information or data packets that are present are all periodically transmitted by the server or the broadcast period, and mainly include: the transmitted media data and the lost data, etc. Forms to show, statistically strong. Such characteristics make the information fed back by the client cause the server's own transmission speed to change accordingly, so as to better match the network conditions. Practice has proved that the use of both RTP and RTCP can promote the transmission rate to reach the state, and then effectively implement streaming media data transmission over the network.
Analysis of Streaming Media Server Broadcasting over IP Network
Currently Helix Server, Darwin Streaming Sever, and Windows Media Service are some of the mainstream streaming media service platforms. Helix Server and Windows Media Service are the most widely used applications for Webcasting. Among them, the earliest used streaming media system is a series of products of Real Networks, and he is also the provider of more online streaming media solutions in the world, that is, providing a series of products related to the server to the client. Microsoft's latest streaming media solution, Windows Media Service9, is characterized by its convenience, innovation, integration, and low cost. It has become a mainstream product in the streaming media market. In particular, its integration with the operating system makes people You do not need to purchase it separately when you purchase. In this regard, the author believes that in the selection of streaming media streaming media server can be based on the trend of development needs and the comprehensive characteristics of the product to consider, you can choose Windows Media Service 9, easy to use, low cost, strong performance, etc., in one fell swoop.
The emergence of streaming media technology in online broadcasting is a trend of the times, not only broadening the scope of traditional broadcasting, but also highlighting the impact of broadcasting. It can be said that streaming media technology has injected new vitality into broadcasting and promoted the effective and continuous development of broadcasting.
Digital IP Network Broadcast System Control Center Server Host Software
IP network broadcast systems and traditional broadcast distinction <br> <br> traditional broadcasting communication technologies have certain predetermined frequency and transmit power, which broadcast coverage have certain constraints, but are also the audience received the order , Shorter time, making the audience receive a strong passivity. Internet radio not only has the flexibility and vividness of traditional forms of broadcast and television, but also can interact with the Internet to broaden its scope. Here, I roughly explore the streaming media technology in webcasting.