Network system and method for ground digital multimedia broadcasting by using satellite data path

A technology of multimedia broadcasting and network system, applied in the field of terrestrial DMB network, can solve the problem of installation antenna limitation and so on
CN1909411AInactive Publication Date: 2007-02-07STIT TECH CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STIT TECH CORP
Publication Date
2007-02-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is a network system for ground digital multimedia broadcasting (DMB). The DMB system includes a ground path and a satellite link path. The ground path includes a base station, modulating the first type signals received from the broadcasting center into the second type signals for ground DMVB, to transmit them to the receiver in the reception area. The satellite link path includes a satellite earth station, modulating the first type signals received into the third type signals with the bandwidth larger than that of the second type signals and transmitting them to the satellite; and a gap stuffer, receiving the third type signals to process the fourth type signals through executing the signals including the coding and crossed signals and converting the fourth type signals to the second type signals to transmit them to the receiver in the non-reception area. The third type signals include the fiducial time information and the gap stuffer uses the fiducial time information to transmit the second type signals with the base station simultaneously.
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Description

technical field

[0001] The present invention relates to digital multimedia broadcasting (DMB) networks, and more particularly, to terrestrial DMB networks. Background technique

[0002] Digital Multimedia Broadcasting (DMB) is a broadcast service that can provide high-quality music, pictures, and communications in both mobile and non-mobile service areas. According to the transmission method and service frequency bandwidth, DMB can be divided into ground DMB and satellite DMB. Satellite DMB utilizes ultra-high frequency (UHF) of 1400-2700MHz through satellites, while ground DMB does not utilize satellites and uses very high frequency (VHF) of 200MHz.

[0003] After going through the trial broadcasting stage, test broadcasting stage, and main broadcasting stage, a broadcasting center (eg, Korean Broadcasting System: KBS) relays terrestrial DMB signals using a dedicated frequency bandwidth. In order to relay DMB signals, a minimum bandwidth of 2MHz should be guaranteed. For...

Claims

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