Digital television and channel searching method thereof

Abstract

The invention discloses a digital television and a channel searching method thereof. The method comprises the following steps: according to an address of location of the digital television, searching program information corresponding to the address; acquiring a data packet of the program information from a network server, wherein the program information data packet comprises one or more kinds of the following data: a network information table (NIT), a service description table (SDT), an event information table (EIT) and a TOT. By using the digital television and the channel searching method thereof, after the needed address is searched, the data packet of the program information corresponding to the address can be directly acquired from the network server. A frequency point corresponding to the needed address does not need to be searched. Through analyzing the data packet of the program information corresponding to the address acquired by the frequency point, a television program corresponding to the address can be played. Therefore, channel searching time of the digital television can be substantially shortened and a channel searching efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of television, in particular to a digital television and a channel searching method thereof. Background technique [0002] At present, there are mainly two ways to search channels for digital TV: one is full-frequency point search, which generally searches from low frequency to high frequency sequentially. The disadvantage of this search method is that it takes a long time to search channels, which generally takes about 20 minutes. The second is to use the network information table to quickly search for channels. The second method first performs frequency point locking, and then processes such as intermediate frequency amplification and filtering to obtain PAT (Program Association Table, program association table) information, and obtains the required PMT (Program Map Table program mapping table) and PID (Packet IDdentifier, identification code transmission packet) information, and finally perform initializ...

AI Technical Summary

Problems solved by technology

[0003] At the same time, the above two methods of channel search are relatively passive. When the NIT (Network Information Table, Network Information Table) is modified or the frequency point is updated, it cannot be updated in time.

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