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Method for automatically updating network transmission parameter in digital television

A network parameter, digital TV technology, applied in color TV parts, TV system parts, TV and other directions, can solve problems such as inconvenience in use, difficult for ordinary users to accept, and untimely update.

Inactive Publication Date: 2005-01-26
LG ELECTRONICS (CHINA) R&D CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method is to input the user through the remote control button through the interactive interface. This method is inconvenient to use, and the update is not timely
[0006] The main problem of the prior art is that it can only be input after the user gets the change message of the channel, and it cannot be updated in time, and because of the cumbersomeness of the professional data (5-6 digits), it is still difficult for ordinary users to accept

Method used

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  • Method for automatically updating network transmission parameter in digital television
  • Method for automatically updating network transmission parameter in digital television
  • Method for automatically updating network transmission parameter in digital television

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0031] The present invention proposes a method for realizing automatic updating of network transmission parameters by utilizing the service information of digital television, that is, Figure 4 In the dotted line part, the parameter information of other channels in the network is extracted from the standard service information, and stored in the memory after verification.

[0032] figure 1 It includes the information packet NIT related to the network status in the DVB service information (SI) and the descriptor that specifically describes the transmission parameters. Among them, table_id 101 indicates whether the network status is the current network or other networks. Transport_Stream_id 103 and original_network_id 104 can uniquely identify one physical channel under the network. Descriptor 102 includes the transmission parameter descriptor cable_de...

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Abstract

The invention relates to a method to automatically updating network transmission parameter in digital television. It includes the following steps: first, choosing a video signal with network information form plural TV signal; second, checking the variety of parameter in network information and stored in digital television; finally, using new parameter to demodulate the programs, if demodulating successfully, updating the network parameter. The invention reads the network transmission parameter in different physical frequency ranges by analyzing the network transmission parameter of digital TV signal. When the parameter varies, it would automatically update. Thus, the invention can effectively assist manual input of user.

Description

technical field [0001] The invention is applicable to the digital television of DVB standard (approximate or equivalent to DVB standard), and relates to a method for automatically storing and updating network transmission parameters. Background technique [0002] ATSC (Advanced Television Systems Committee, American Advanced Television Business Advisory Committee) and DVB (Digital Television Broadcasting) are the two main standards for digital television at present, and the latter has received a lot of praise for its flexibility. But on the other hand, its flexibility also causes certain problems. For example, there are uncertainties in the network transmission parameters (symbol rate, modulation mode, etc.), which cause the parameters of the user's receiver to also need to be adjusted, otherwise the program cannot be received normally. [0003] If the TV receiver is in a complex network condition, the transmission parameters of each network may not be exactly the same. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/43
Inventor 桂伟力
Owner LG ELECTRONICS (CHINA) R&D CENT CO LTD
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