Roaming method of mobile digital TV.
A technology for moving digital and digital TV signals, used in color TV parts, TV system parts, TV and other directions, it can solve the problems of unable to continue playing, unable to lock frequency, etc., to save manual trouble and smooth switching. Effect
Inactive Publication Date: 2008-06-11
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN +1
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Problems solved by technology
[0009] During the rapid development of terrestrial digital TV, local stations have established their own local operations, and the networks and programs they transmit are not the same. This objectively causes the frequency lock and cannot continue to play when the mobile set-top box receives across regions. Case
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[0017] Below in conjunction with embodiment the present invention is further described.
[0018] A roaming method for mobile digital TV, including a digital TV signal transmitting method and a roaming digital set-top box receiving method;
[0019] The digital TV signal transmitting method includes: respectively setting digital TV signal transmitting stations in at least two areas; the digital TV signal transmitting stations in each area uniformly send network information data in their respective digital TV channels;
[0020] The receiving method of the roaming digital set-top box includes: when the signal of the currently broadcast program is interrupted or reaches a certain boundary, the digital set-top box fuzzily inquires map data and network information data according to the current address information and the current transmitting station code information; then, according to The result of data query processing is to search for the signals of the transmitting stations aroun...
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A roaming method for mobile digital television, referring to mobile digital television transmitting and receiving project of roaming digital set-top box (STB), which contains digital television signal transmission method and roaming digital STB receiving method, said digital television signal transmission method containing respectively setting digital television signal transmission station in at least two areas, said digital television signal transmission station uniformly transmitting network information data, said roaming digital STB receiving method containing when signal interrupted or reached a boundary, the STB searching map data an network information table data according to current address information and transmission state coding information, scanning around transmission state signal according to searched result, when receiving signal of around station switching to said station frequency and playing program. Said invention can realize STB automatic and smooth switching network and program crossing area.
Description
technical field [0001] The invention relates to a roaming processing scheme of a mobile digital TV, in particular to a scheme of transmitting a mobile digital TV and receiving a roaming digital set-top box. Background technique [0002] In the era of rapid development of digital TV, terrestrial wireless data transmission has become one of the most important forms of network communication, and it is bound to have great development. The current wireless transmission methods mainly include the Global System for Mobile Phones (GSM) standard, the Code Division Multiple Access Communication System (CDMA) standard, the 802.11g standard (a newest wireless networking standard) and the DMB-T solution. [0003] The purpose of the DMB-T scheme is to provide a digital information transmission method. The core of the system uses mQAM / QPSK Time Domain Synchronous-Orthogonal Frequency Division Multiplexing (TDS-OFDM: Time Domain Synchronous-Orthogonal Frequency Division Multiplexing) modula...
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IPC IPC(8): H04N5/44H04B1/16H04N7/08
Inventor 侯卫兵周凡冯冠平金涛郭文秀
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN