Two-way information interaction method applied in broadcast TV system

Abstract

The invention relates to a method for interacting information in a bidirectional way in a broadcasting TV system, the data downlink process comprises the following steps: 1) a multicasting channel and a broadcasting channel are respectively defined; 2) an interactive flow process is carried out according to media content to be played; 3) the interactive information is marked according to concrete application and the media content; 4) the interactive information of a broadcasting type and a multicasting type is respectively packed, modulated and sent to a broadcasting transmission network; 5) a terminal system circularly waits for the interactive information in the broadcasting channel or the multicasting channel and demodulates the information from the channel according to different types of the information; then a coordinate position showing that the interactive information is given by a terminal interactive processing module; 6) the interactive information is displayed by an information displaying module in an appointed position. The method for interacting information in the bidirectional way in the broadcasting TV system makes full use of advantages of big downlink bandwidth and wide coverage of the broadcasting network and at the same time combines flexibility of a data network, thus realizing a wide-covering interactive function of personalized information.

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 TV 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, charging f...

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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