Information interaction method for broadcast, television and network

Abstract

The invention relates to a bidirectional information interaction method used in broadcast and television systems. The data downlink process of the method comprises the steps: 1) respectively defining a multicast channel and a broadcast channel; 2) carrying out interaction flow processing according to media contents to be broadcast; 3) marking interaction information according to specific application and the media contents; 4) respectively packing, modulating, and sending the interaction information of the multicast channel and the interaction information of the broadcast channel to a broadcast transmission network; 5) cycling and waiting the interaction information of the broadcast channel or the multicast channel in a terminal system and demodulating the information from the channels according to the different types of information, and then providing the coordinate position, at which the interaction information is showed, via a terminal interaction-flow processing module; 6) displaying the interaction information at specific position via an information display module; In the invention, the advantages of large downlink bandwidth and wide coverage of the broadcast network are fully used. Meanwhile, a function of personalized information interaction with a wide coverage is achieved combining the flexibility of data network.

Description

technical field [0001] The invention relates to the fields of broadcasting and television network systems and cable television network systems, in particular to a two-way information interaction method applied in broadcasting and television systems. Background technique [0002] The traditional radio and television network (broadcast transmission network) system can be divided into two categories: wireless radio and television network system and cable television network system. The geographical range covered by the former depends on the frequency, power, polarization direction of the antenna used by the TV station, the use of omnidirectional or directional antennas, etc., while the latter usually uses backbone optical fibers and access parts within a certain geographical range. Compared with the way of coaxial cable, the geographical range of the former is much larger than that of the latter, but the latter has other advantages, such as better transmission signal quality, ch...

AI Technical Summary

Problems solved by technology

[0005] The information to be transmitted during the playback of the media content is made into a data stream broadcast at a specific time through the subtitle machine, and then the data stream is superimposed with the media content through the modulator, and then sent to the cable TV network through the multiplexer; the terminal passes to the specific time Channel reception is enough. In this case, the terminal does not have the function of two-way interaction

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