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Digital television signal code stream characteristic extraction and recognition method and equipment thereof

A feature extraction and digital signal technology, applied in the field of communication, can solve the problem of waste of channel resources, and achieve the effect of simple and reliable method, fast processing speed, and saving channel resources

Inactive Publication Date: 2009-12-09
COMMUNICATION UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also brings a problem. To compare two code streams at the monitoring point, it is necessary to transmit one reference code stream to the monitoring point with the same bandwidth channel, which will cause a great waste of channel resources.

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  • Digital television signal code stream characteristic extraction and recognition method and equipment thereof
  • Digital television signal code stream characteristic extraction and recognition method and equipment thereof
  • Digital television signal code stream characteristic extraction and recognition method and equipment thereof

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Embodiment Construction

[0048] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings. Such as Figure 4 Shown is a hardware processing platform of an embodiment of a device for extracting and identifying digital TV code stream signal features in the present invention. The hardware processing platform adopts the method of computer + PCI stream acquisition card, and the PCI stream acquisition card adopts Blue Topology MPEG2 transport stream data acquisition card BSRC-11. The computer model is: Intel(R) Pentium(R) 4, CPU 2.93GHz , 1GB memory. The functions of the sending end and the receiving end are realized on the said hardware platform. The realization of specific functions is completed by computer software programming. The hardware processing platform is not limited to computer, but can adopt industrial computer, embedded system, DSP digital signal processing platform or special digital signal processing system. The code ...

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Abstract

A digital TV signal stream feature extraction and identification method and its equipment belong to the communication field. The invention proposes a simple and effective characteristic parameter describing the digital TV code stream, and uses the characteristic parameter to identify the content of the digital TV code stream. The device provided by the present invention includes: the sending end includes at least one collection device and a processor coupled thereto; the receiving end includes at least one collection device and a control processor coupled thereto. The invention overcomes the limitation that the code stream comparison method adopted in the current digital signal transmission monitoring depends on the code stream of the original sent signal. By extracting and identifying the characteristics of the digital TV code stream, it is only necessary to use a low-bandwidth channel to transmit characteristic parameters, so that the digital TV signal monitoring points can be flexibly distributed to any place within the coverage of the digital TV broadcasting network, effectively expanding the monitoring range .

Description

technical field [0001] The invention belongs to the technical field of communication, mainly relates to the monitoring and identification of interference signals in the digital television signal transmission process, and is a code stream content identification method based on the code stream characteristics of the digital TV signal. Background technique [0002] In the digital radio and television system, in order to ensure safe broadcasting and improve broadcasting quality, it is necessary to establish a safe broadcasting monitoring and control system. Television programs cover the whole country through satellite, cable and terrestrial digital television broadcasting, and a monitoring network system for satellite, cable and terrestrial digital television broadcasting needs to be established accordingly. [0003] The radio and television monitoring system mainly uses the channel transmission bit error rate as the monitoring parameter and judgment basis based on the nature of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/24H04N5/00H04L29/06
Inventor 章文辉姜秀华杜百川杨盈昀常伟周艳蕾
Owner COMMUNICATION UNIVERSITY OF CHINA