subject: Current Situation Of Mobile Tv [print this page] 3G era, people generally believe, images, video and audio, etc. Multimedia Service Will be the future network of leading business Mobile TV One major concern is one of the applications. It is estimated that by 2010 the world will have more than 100 million mobile TV users, the number of users in China will be tens of millions. While this figure may be overly optimistic, but mobile TV technology and business prospects are very broad indeed, and now it is only just beginning. Here only in respect of several mobile TV to discuss issues of concern, as is the new mobile TV technology and business for more accurate positioning, in order to facilitate its future development.
The emergence of mobile TV has aroused the concern of businesses and users, as a new media, because of its special nature of the terminal, in addition to ordinary mobile phone functions can be done, but also in real time or non real-time audio and video playback, can display text messages, has some storage, if the channel allows, to achieve the two-way interaction information is Communicate Network and Broadcasting Network to a specific integration Ages. As the mobile TV terminals can be compact Mobile It can be about anywhere with us, users can easily access services.
Nevertheless, many problems exist, making the development of mobile TV is not as smooth as one might think. For example, the mobile phone screen is small, high fees, lack collapse program, Power supply Support time is short. Some of these problems is to wait for technology development and has been gradually eased, such as power supply problems; there are some mobile TV services will expand with the gradually improving, such as program source of the problem. However, the progress of mobile TV services, whether the media's audience, or operator must have an idea of updating the problem, namely, the mobile TV technology, functionality and positioning the business can not expect it to take too many tasks and can not be expected it from the very beginning, the development of unity and perfection.
Mobile TV "is not" TV
Mobile TV now not be accepted by many people mainly because it is far smaller than TV picture quality and features. Therefore, to make mobile TV widely recognized gradually, you do not, it is not possible to Mobile TV and human consciousness in the traditional "Big TV" comparison, which is the cell phone, watching TV is that it's an additional feature, nothing more. Mobile TV has actually not in the traditional sense of the "TV", but a convenient way of information received, it and the general television is different, the concept can not be used to request ordinary TV mobile TV. It is often in conditions you do not watch regular television, as in the car, on the road, using mobile phones to watch, play video and audio programs. From the program's point of view, mobile TV Broadcast system More suitable for broadcast short news, timely reality TV skits, fun games, movie clips, small Advertisement And other programs; mobile TV in addition to watching TV programs, also suitable for storing programs for later broadcast receiver. Mobile television has replaced these general advantages of television can not be sufficient to guarantee its future media and entertainment markets, the existence and development.
Mobile TV screen, "not small"
About mobile TV, since people tend to brows Zou Though you whispered: palm-size screen, to see what tricks? The small screen on the mobile TV not agree. In fact, small-screen mobile TV is not a little obstacle. We know that the eyes see the object of definition is mainly determined by the size of the angle. As such, mobile TV screen is not small. Of course here is not to say the absolute screen mobile TV Foot Inch, but that said, when watching mobile TV and watch the human eye View Big screen TV is almost the same. Watching TV, the general viewing distance should be maintained properly, in accordance with the relevant national standards, the best television viewing should be the diagonal distance of 4 to 5 times, if a station 29 inches TV , Its diagonal is 74 cm, the best viewing distance of 3 meters, the viewing angle is 300:74 4:1. Mobile TV's 3-inch LCD screen, the diagonal is 7.6 cm, when the viewing distance of 30 cm, its angle ratio of 30:7.6 4:1, and the perspective of the big-screen TV than are comparable, If people are not conscious of the absolute size of the ratio of 29:3 such a big gap. So close and watch video images on the small screen, the effect is acceptable.
Mobile TV standard allows "different"
Currently, mobile TV implementations (or mobile TV standard) more, but mainly in the following three ways: one is based on the mobile communication network of the way through the public mobile network, using mobile streaming media the realization of mobile television transmission, which are essentially within the scope of mobile data communications. The advantage is that users do not increase the cost of mobile terminals; on carriers, mobile networks can use two-way communication function, convenient for the business user authentication, management, accounting and control, convenient for the user to provide personalized services, such as on-demand, interactive, location, etc.. But the biggest problem in this way is limited network bandwidth and the volatility (and even 3G networks are not able to fully guarantee the user's bandwidth), at the same time support a limited number of users, and so charge higher fees.
Second is based on the ground Digital Broadcasting Network implementation. This approach is essentially a kind of ground Digital TV Broadcast frequencies used for broadcast TV band generally. To meet the mobile terminal to receive the characteristics of the existing terrestrial digital broadcast television technology made many improvements, a mobile digital video broadcasting technology. Thus, there is no way that digital broadcasting bandwidth limitations and restrictions the number of users, image quality. However, due to digital broadcast television networks are often not the uplink, it is difficult to achieve on the user's personalized service, difficult to provide user identification, control, interaction, billing and location services. Another issue to consider is that in this way, the user mobile terminal to add a digital TV receiver unit, an increase of mobile phone costs.
Third is the implementation of satellite-based methods, this approach is essentially provided via satellite downlink transmission mode for broadcast mobile TV services. Satellite mobile TV system specific Package Including terrestrial broadcast center, communications satellites, receiving terminal, or repeater
