Method for researching digital television program

Abstract

The invention relates to a digital television technology and provides a dynamic digital TV program retrieval method. The technical proposal is that the digital TV program retrieval method includes the following steps: a. dividing the TV program corresponding to digital TV channels into at least two types and establishing key words; b. formulating a BAT chart according to program type; c. matching the key words, and adding a corresponding type to the channel with a successful matching; d. packing the finished BAT chart into a TS stream to be send; e. judging the ending time of all the successfully matched programs, reporting the time nearest to the current time, and removing all the channel service_ id in all program type business groups in the BAT chart; then, returning to the step c. The dynamic digital TV program retrieval method is suitable for digital TV program retrieval system and has the advantages that the efficiency of program searching is improved significantly, which offers convenience for the user.

Description

technical field [0001] The invention relates to digital television technology, in particular to a method for searching digital television programs. Background technique [0002] With the development of digital TV, more and more TV channels can be watched, and the number of comprehensive and professional channels can reach hundreds or hundreds. It is difficult for users to watch the content they want to watch quickly and conveniently. At present, in order to facilitate users to retrieve various programs, an EPG (Electronic Program Guide) system is integrated in the digital TV set-top box, but EPG is usually based on the program in a single channel, and the structure level is only two levels. Users must first determine the channel before searching Programs cannot be retrieved according to the type of programs they need. For example, when they want to watch TV dramas, users can only browse whether there are TV dramas in the program navigation of each channel one by one, and the...

AI Technical Summary

Problems solved by technology

[0002] With the development of digital TV, more and more TV channels can be watched, and the number of comprehensive and professional channels can reach hundreds or hundreds. It is difficult for users to watch the content they want to watch quickly and conveniently.

At present, in order to facilitate users to retrieve various programs, an EPG (Electronic Program Guide) system is integrated in the digital TV set-top box, but EPG is usually based on the program in a single channel, and the structure level is only two levels. Users must first determine the channel before searching Programs, it is impossible to search for programs according to the type of programs they need. For example, when they want to watch TV dramas, users can only browse whether there are TV dramas in the program navigation of each channel one by one, and the retrieval efficiency is very low.

Some set-top boxes use BAT (Bouquet Association Table) or SDT (Service Description Table) table to divide each channel into categories such as "news, sports, TV series, finance and economics", and provide a three-level structure of "channel category-channel-program" Although the hierarchical program retrieval system solves the above-mentioned problems of the existing EPG to a certain extent, because the channel category is usually divided by the operator according to the main program category of the channel, there is sometimes inconsistency between the channel category and the program. For example, the CCTV economic channel of finance and economics will broadcast TV dramas every afternoon, which will lead to wrong program retrieval. In addition, some comprehensive channels cannot judge the channel category, which narrows the scope of retrieval.

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