Digital annunciate and IPTV
Current IPTV, more tries to begin angle of business of network news video to understand from broadband operation business, less refer IPTV regards configuration of a kind of technology as the application in other industry. About the evaluation of IPTV alternant sex, also be from do relative angle to set out with digital TV, what count word TV network relatively is two-way transform come true hard in home and of character. However, IPTV serves as a new technology, two-way character is only among them one of, it still has characteristic of a lot of other, among them the most important facet, also be the real value of IPTV, can construct namely the TV system platform with low cost and agile height. As a result of low cost, just can appear so called " private TV station " , and so called " sow a guest " and even " inspect a settle or live in a strange place " . In addition, the flexibility of IPTV is apparent the TV station of excel tradition, augment and it is very easy to add channel, the system can accuse with far Cheng Qun, and easily implementation graph article and multimedia direct seeding, share Internet resource to wait. In the industry beyond wide report, network, so compose of a lot of need establishs the goal that closed-circuit television ability achieves, use IPTV technology to be able to come true completely now. In these circumstances, the applied target of IPTV dimensions is different, different, the technology asks to have respective characteristic, and the cost advantage of IPTV becomes common characteristic.
The industry application of IPTV is put in a huge market. The bank can build internal IPTV system, use at conduct propaganda, employee to groom; The school can build campus IPTV to use a system, provide education and conference relay, recreation, advertisement; Supermarket and sell the IPTV of field to be able to use sales promotion, guide buy; And cadre of rural Party member grooms remotely the system can use IPTV technology; The long-range education of rural teenage children also can use IPTV platform to wait a moment. An outstanding example is, as a result of the influence of 911 incident, american ceaseless him aggrandizement prevent fear a system, a of IPTV alleged killer applies, use a network to broadcast a technology namely, build a whole society Lou Yu, outdoor is spread all over inside limits platform of large network TV, use at urgent prevent those who fear information to release.
The digital notification system of current main trend uses the technical framework that is based on IPTV entirely. Made full use of the indication technology that cost reduces ceaselessly and easily compose is built and the IPTV technology with low cost. Graph the 1 digital notification system that is a model, have as similar as IPTV media to collect, weave, distribute, broadcast wait for typical link.
Structural frame of digital notification system
Digital annunciate and mobile TV
The floor space TV that developing at present, appeared to have two kinds of representative cases on technical configuration. One kind is to use adopt Internet pilot system (giving simple form quite is to use DVD machine to broadcast, not couplet net) , additionally one kind is the system that platform of network of TV of shift of have the aid of builds.