Digital mobile multimedia case study

Summary: Mobile TV multimedia as a new media, has a wide coverage, reflecting the rapid, mobile and strong features, in addition to traditional media campaigns and appreciation of function, but also has the function of city emergency information dissemination. For mobile TV, the "forced ratings" is its greatest feature, dissemination conducive to expansion of the mandatory content of "boring economy" profit margins, the mobile TV audience is caught in the car, waiting for such a short space boredom Mandatory dissemination, consumers had no choice when it is captured by this good for some default content (such as advertising), the spread better.

Keywords: coding; multiplexing; DAB-T; Transport Stream

Yellow TV and digital broadcast television equipment, Liaoning Group Co., Ltd. launched a test platform for mobile multimedia digital solid state transmitter part of the cooperation, overall planning for the province to carry out mobile TV projects, from front-end mobile broadcast TV to provide a unified program source, the province around the city-car mobile TV and large screen LED terminal project as a whole unified operation, both can use the mobile digital TV characteristics of multi-channel broadcast different programs were given to different terminal, the terminal can also be different in the same broadcast advertising, according to the different needs of a flexible combination of a good reduction in our investment while improving our projects yield better service for the people of the province, creating more social value and economic benefits.

2007 TV stations in Shanxi Yellow River in China and other places do Jinzhong multimedia broadcast television business, primarily for multimedia digital television transmission systems have a realistic experience, the Yellow River in Liaoning TV and digital radio and television equipment group companies in Jinzhong TV Tully office established by DS-38 launches Channel 1 kW power to build and opened a DMB-T experimental platform, based on the experiment to determine the terrestrial mobile TV broadcast in Shanxi technology model: Digital high-power single point of launch, a one-time coverage Jinzhong. Completed programs broadcast by the multiplexing encoding the province and 6 sets of 6 sets of television broadcast transmit mode to achieve the original analog transmission equipment to digital transformation, and further expand the coverage of the provincial radio and television, but also for the future development of our Digital Television Multimedia Broadcast and accumulated experience.

Project objectives are: use of an analog frequency 8M, staging areas to achieve the above mobile TV single frequency network coverage; broadcast control center established at the provincial level, using H.264 encoding, the use of the transmission link Shanxi Mobile , room, tower and other facilities, allowing users to enjoy mobile TV to bring a new experience.

1 mobile digital TV system
mobile digital TV system consists of digital TV front-end, transmission, receiving three parts. Platform architecture are:
1.1
digital TV front-end front-end including program source production, broadcast systems, program coding system, program launch systems, network management systems, operations support systems.

(1) program source production system. Programs for the needs of users, the program included the adoption of the highlight of your system to the local, for local non-linear editing, to adapt to the user of the wonderful program. And edit the two included in the current program. The program is currently the main source of the Yellow River station run by two non-real-time broadcast programs.

(2) broadcast system. Broadcast system using the hard disk after the broadcast editing, program source with AV output.

(3) program code \ multiplexing system. For higher quality and efficient use of bandwidth to transfer programs, we use the H.264 encoding. Hard broadcast system broadcast two programs through the formation of H.264 encoder encoding the TS stream, and then through the multiplexer multiplexing and PSI / SI handling two programs form a TS stream, then into the program launch systems.

(4) program delivery systems.

(5) network management system. Network management system including: network management middleware, network management equipment systems, BSS systems such as a complete network management, mobile digital TV system in Shanxi operators to provide good support and protection.

1.2
transfer to provincial centers around the city from the transmission program transmitted by optical transmission.