IPTV and digital annunciate network are carried out

Use IPTV technology, build a multimedia platform that is based on a network through compose, can implement a system that runs completely centrally, achieve collect to broadcast, control and monitor the network of new generation ad at an organic whole. The form that this kind of network broadcasts is in abroad application of already large area, be called " Digital Signage " , chinese is translated into more at present " digital annunciate " . Because can come true,pointing to calm time, appoint a place to use appoint means to broadcast assign content, it is so what can have client specific aim more than broadcast is narrow sow a system, transmission will be more effective. Be in abroad, the place such as Lou Yu, airport, subway, bazaar, campus, hotel, digital annunciate is developing flourishingly.

The technology that digital annunciate involves includes digital multimedia to compress, processing, memory, transmit, network interconnection, database, embedded a lot of respects such as monitor of player, flat. As a result of,its use development is greatly of flat monitor substantially cost reduces place to bring about. The rapid development of TV of plasma, liquid crystal, the cost that makes compose builds network of a video is reduced greatly. On the other hand, broadband network makes multimedia number becomes a possibility according to transmitting. It is OK to use broadband IP network, digital satellite network, mobile TV network and wired broadband network finish the multimedia data, high speed that inspects frequency to occupy especially to transmit conveniently, still have, because compress technical progress,be, the bandwidth that the image that reachs coequal resolution has also decreases substantially. Visible, digital notification system is a typical IPTV application.

3, systematic practice
The basic function of IPTV is transmit and broadcast digital media file, produce each segment of flow than traditional movie and TV- - collect, make up, careful, sow, put, not little, as a kind of IPTV, digital annunciate also is same. The difference is primary reason audience will control (perhaps choose) broadcast became by the concentration of the administrator control is broadcasted or the system is broadcasted automatically according to what the program expresses.

Specific and character, digital notification system wait for composition by network of data management center, media, media player, monitor.

Digital notification system is a network system that can run a large number of players. The link that involves as a result of the system is much and complex, impossible that by certain the supplier is finished independently, business of compositive business, development of network provider, software, player produces need system business and monitor produce business to wait to cooperate ability to finish jointly. The project of author introduction is carried out, it is by the author place unit assumes a system compositive business, software development business and player provider 3 parts, through cooperating with network provider, monitor provider, a function came true to compare the digital notification system with comprehensive, complete function on wide area newwork.
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