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Method for adjusting packet identifier in transmission flow

A technology of packet identifiers and transport streams, applied in the field of communications, can solve the problems of illegal use and inability to receive legal programs, and achieve the effects of low cost, easy effective management and control, and convenient operation and implementation.

Inactive Publication Date: 2008-02-13
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the user installs a satellite TV receiver without a secure receiving chip, he can still receive illegal programs, which may be used by criminals
Therefore, in order to eliminate this hidden danger, it is necessary to control the satellite TV broadcasting system so that the satellite TV receiver without a safe receiving chip cannot receive legal programs.

Method used

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  • Method for adjusting packet identifier in transmission flow
  • Method for adjusting packet identifier in transmission flow

Examples

Experimental program
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Embodiment Construction

[0022] With reference to Fig. 1 to Fig. 4, the inventive method comprises steps:

[0023] ① The front-end control system converts the adjustment value used to adjust the package identifier into a feature code.

[0024] ② The front-end control system packs the converted feature codes and control commands into a transport stream format conforming to the MPEG-2 standard. Its control command is the adjustment mode of adding the adjustment value with the original package identifier, or subtracting the adjustment value with the original package identifier.

[0025] ③The front-end control system packs the transmission stream into TCP / IP format and transmits it to the multiplexer through Ethernet.

[0026] ④The multiplexer extracts the information in the transmission stream, adjusts the packet identifier according to the adjustment value and control command, and multiplexes the packet identifier adjustment value and control command that need to be transmitted to the secure receiving ...

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PUM

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Abstract

The invention discloses a method used to adjust a packet identifier in transport stream and relates to a digital information processing technology about management and control on satellite digital TV broadcasting in communication field. According to the existing related standard and technology of the satellite digital TV, the invention controls a multiplexer with a front-end control system to adjust the packet identifier in transport stream, sends corresponding order to a safety receiving chip and controls the safety receiving chip to adjust the packet identifier to original value. With the method, the invention has the advantages that the invention can adjust the packet identifier of transport stream uniformly in upflow system, thus resulting in that the equipment without satellite TV safety receiving chip cannot receive legitimate program, which is not only with convenient management but also with higher reliability and security. Therefore, the invention can realize effective management and control on satellite digital TV broadcasting.

Description

technical field [0001] The invention relates to a method for adjusting the packet identifier in the transmission stream in the communication field, which is especially suitable for uniformly adjusting the packet identifier in the transmission stream in the uplink system, so that the satellite TV security receiving chip is not installed The equipment cannot receive legal programs, so as to realize the effective management and control of satellite TV broadcasting. Background technique [0002] The invention of the secure receiving chip makes the management and control of satellite TV broadcasting a reality. It compares the received program identification (station name) with the legal station name stored in the chip, and allows the transmission stream of the program that is allowed to be received to pass through, filtering out unreasonable programs. The received programs are allowed to transmit streams to achieve the purpose of controlling satellite TV program signals. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/16H04N7/24H04L12/56H04L47/20
Inventor 李胜利田素雷
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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