Digital television channel searching method and channel searching system

Abstract

The invention provides a digital television channel searching method and a channel searching system. The method includes the steps that a digital television acquires an identity (ID) of an operator who provides signals for the digital television; a channel list request which is matched with the operator ID is generated, and the channel list request is sent to a server; and the server sends a corresponding channel table to the digital television according to the channel list request of the operator ID. The digital television sends the operator ID to the server and requests for acquiring for the channel table, the server sends the corresponding channel table to the digital television according to the operator ID sent by the digital television to achieve channel searching, and the capacity of the channel table is small and is only dozens of bits so that time required by the server for sending the channel table to the digital television is short, and namely, time for searching channels is short. Compared with technical schemes of multiple frequency channel searching and fast channel searching, the channel searching method is capable of greatly increasing channel researching speeds and improving user experience optimization.

Description

technical field [0001] The invention relates to the technical field of television, in particular to a digital television channel search method and a channel search system. Background technique [0002] At present, there are two main ways of automatic channel search for digital TV, which are full-frequency channel search and fast channel search. Among them, the full-frequency station search generally searches from low-frequency to high-frequency sequentially. This method of searching for stations generally takes about 20 minutes, which has the disadvantage that it takes a long time to search for stations. Quick channel search first needs to lock the frequency point, then obtain the program association table through intermediate frequency amplification, filtering and other processing methods, and obtain the required program mapping table and identification code transmission package according to the program association table, and finally perform non-volatile random Access the ...

AI Technical Summary

Problems solved by technology

Among them, full-frequency station search generally searches from low frequency to high frequency sequentially. This search method generally takes about 20 minutes, and there is a disadvantage that it takes a long time to search for stations.

Quick channel search first needs to lock the frequency point, then obtain the program association table through intermediate frequency amplification, filtering and other processing methods, and obtain the required program mapping table and identification code transmission package according to the program association table, and finally perform non-volatile random Access the memory to perform initialization to complete the channel search operation. This channel search method takes about 10 minutes, and there is also the disadvantage of long time required for channel search.

[0003] At the same time, the above two search methods 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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