System, device and method for broadcasting service data

Abstract

The invention provides broadcast system and the broadcast devices and methods for a business data, use the business data broadcast devices in the system, generate business data flow and data call flow, deploy the business data call flow at all the frequency points through multiplexing unit, deploy the business data flow at specific frequency point, the receiver unit, incorporate with in data flow with notice of business information location message and time migration after receive data call flow, can automatically switch frequency point to receive data when business data is arriving, then return the current frequency point to continue current operations. On account of the call data size is smaller than that of business data, the total occupied bandwidth will double reduced, as the call data flow is deployed at all the frequency point, therefore do not need to wait when receive, we can see that use the invention can save bandwidth resources and save the time to receive business data at the same time for users.

Description

technical field [0001] The invention relates to the field of digital television broadcasting, in particular to a service data playing system, playing device and method. Background technique [0002] Digital TV broadcasting is a research and application hotspot in the field of broadcasting technology at present, and many countries have launched their own digital TV broadcasting systems one after another. In the digital TV one-way broadcasting network, MMS and other services need to send a large amount of business data to the designated receiving unit through broadcasting. Since the sending unit does not know whether the receiving unit has received the information, it needs to send it within a period of time. The business data of one or more units are combined into a code stream for repeated playback, that is, carousel. Programs and data are simultaneously transmitted at multiple frequency points in the radio and television network. For cost considerations, the receiving unit...

AI Technical Summary

Problems solved by technology

[0004] see figure 2 As shown, the service data is divided into multiple identical code streams by the code stream allocation unit, and then multiplexed by the multiplexing unit, so that the service data is included in all TS streams, and the receiving unit can find that there is a service when it is at any frequency point The data arrives and is received, which solves the problem of long waiting time for users at the receiving end. However, in this solution, the bandwidth occupation is the product of the service data bandwidth and the number of TS streams. When the amount of service data is large, it will Occupies a very considerable amount of total bandwidth resources

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