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System and method for receiving digital television signals

A technology of digital TV signal and receiving method, which is applied in the directions of image communication, electrical components, selective content distribution, etc., can solve problems such as the main chip does not support, cannot watch digital TV programs, cannot watch digital TV content, etc., and achieves network bandwidth. The effect of less occupation, simple and convenient implementation, and low cost

Active Publication Date: 2014-02-12
SHANDONG TAIXIN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that current computers, mobile phones, tablet computers and other equipment cannot watch digital TV content because their main chips do not support digital TV standards, and the old digital TV chips cannot meet the requirements of new digital TV encryption and decryption technology. In view of problems such as the inability to watch digital TV programs, a digital TV signal receiving system and receiving method is proposed, which enables computers, mobile phones, tablet computers, and TVs using old digital TV chips without modifying the hardware structure. Receive digital TV programs

Method used

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  • System and method for receiving digital television signals
  • System and method for receiving digital television signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Such as Figure 4 Shown, the digital television signal receiving method, its steps are:

[0094] S101: The terminal enters the working state;

[0095] S102: The conditional access front end performs handshake communication with the terminal to confirm the legitimacy of the terminal;

[0096] S103: The terminal receives the authorization management information EMM sent by the conditional reception front end;

[0097] S104: The terminal reads the program list in itself;

[0098] S105: The user selects a program to watch on the terminal;

[0099] S106: The terminal sends a command to lock the selected program to the gateway device;

[0100] S107: The gateway device obtains the SI table and authorization control information ECM related to the selected program from the radio frequency signal of the broadcasting network to the terminal;

[0101] S108: The terminal analyzes the received SI table, authorization control information ECM and authorization management informati...

Embodiment 2

[0108] Such as Figure 5 Shown, the digital television signal receiving method, its steps are:

[0109] S201: The terminal enters the working state;

[0110] S202: The conditional access front end performs handshake communication with the terminal to confirm the legitimacy of the terminal;

[0111] S203: The gateway device obtains the authorization management information EMM from the radio frequency signal of the radio network and sends it to the terminal;

[0112]S204: The terminal reads the program list in itself;

[0113] S205: The user selects a program to watch on the terminal;

[0114] S206: The terminal sends a command to lock the selected program to the gateway device;

[0115] S207: The gateway device obtains the SI table and authorization control information ECM related to the selected program from the radio frequency signal of the broadcasting network to the terminal;

[0116] S208: The terminal analyzes the received SI table, authorization control information ...

Embodiment 3

[0152] Such as Figure 9 Shown, the digital television signal receiving method, its steps are:

[0153] S301: The terminal enters the working state;

[0154] S302: The conditional access front end performs handshake communication with the terminal to confirm the legitimacy of the terminal;

[0155] S303: The gateway device obtains the authorization management information EMM from the radio frequency signal of the radio network and sends it to the terminal;

[0156] S304: The terminal terminal reads the program list in itself;

[0157] S305: The user selects a program to watch on the terminal;

[0158] S306: The terminal analyzes the program selected by the user, and obtains program information including at least a frequency point of the program, program video stream information, and program audio stream information;

[0159] S307: The terminal sends a frequency locking command to the gateway device;

[0160] S308: The gateway device performs a frequency locking operation,...

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Abstract

The invention discloses a system and method for receiving digital television signals. The method for receiving the digital television signals comprises the steps that a terminal enters a working state, authorization management information is received, the terminal reads a self program list, a user selects a program to be watched, the terminal sends a locked and selected program command to gateway equipment, the gateway equipment obtains and sends a table SI and authorization control information related to the selected program from radio-frequency signals of the television network to the terminal, the terminal analyzes the received table SI, the authorization control information and the authorization management information and obtains secrete data related to the descrambling of the selected program, the secrete data related to the descrambling of the selected program are sent to the gateway equipment, the gateway equipment decodes the received secrete data to obtain a secrete key used for descrambling the selected program, a program clear stream is obtained by utilizing the selected program descrambled through the secrete key, the program clear stream is sent to the terminal, and the terminal receives the program clear stream and decodes and plays the program clear stream. The system and method for receiving the digital television signals solve the problem that digital television programs can not be watched through equipment such as a computer, a mobile phone and a tablet computer.

Description

technical field [0001] The invention relates to the field of digital television, in particular to a digital television signal receiving system and a receiving method. Background technique [0002] With the rapid development of network technology and chip technology, TVs, computers, mobile phones, tablet computers and other devices all have network functions, and can decode and play video and audio programs. The primary means of audio programming. Digital TV programs are one of the most popular video and audio content. However, due to the special scrambling system of the digital TV system, only chips that support digital TV standards can descramble and watch digital TV programs. Therefore, only digital TV integrated machines or set-top boxes In order to receive digital TV programs, computer chips, mobile phone chips and tablet computer chips that do not support digital TV standards cannot directly watch digital TV programs. In addition, with the continuous upgrading of digi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/4623H04N21/434H04N21/266
CPCH04N21/472H04N21/4345H04N21/4405H04N21/4623
Inventor 陶圣华
Owner SHANDONG TAIXIN ELECTRONICS CO LTD
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