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

A feature extraction, 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: 2008-07-16
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.

Method used

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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. As shown in FIG. 4 , it is a hardware processing platform of an embodiment of a digital TV code stream signal feature extraction and identification device of 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 str...

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Abstract

The invention provides a method for fetching and identifying the bit rate characteristic of a digital TV signal and a device thereof, which belong to the communication field. The invention provides a device which describes the characteristic parameter of the digital TV bit rate simply and effectively and adopts the characteristic parameter to identify the digital TV bit rate content. The device provided by the invention comprises a sending terminal formed by at least one collecting device and a processor coupled with the collecting device and a receiving terminal formed by at least one collecting device and a control processor coupled with the collecting device. The invention overcomes the limitation that the bit rate contrast method adopted by the digital signal transmission monitoring is dependent on the originally sent signal bit rate. By fetching and identifying the bit rate characteristic of the digital TV, the transmission characteristic parameter of only one low broadband channel is adopted in order to ensure that monitoring points of the digital TV signal are distributed at any places within the range covered by the digital TV broadcast network flexibly, thereby effectively enlarging 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 Applications(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
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