Device and method for detecting transmission error of digital broadcast information flow

A digital broadcasting and error detection technology, which is applied in the direction of error detection/prevention using signal quality detectors, can solve problems such as the reduction of the reliability of measured values, and achieve the effect of accurate detection

Inactive Publication Date: 2007-03-07
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Abstract
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  • Claims
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Problems solved by technology

[0018] However, since this method simply compares the data before and after bit ratio decoding to measure BER, the reliability of the measured value will decrease when a large number of errors occur.

Method used

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  • Device and method for detecting transmission error of digital broadcast information flow
  • Device and method for detecting transmission error of digital broadcast information flow
  • Device and method for detecting transmission error of digital broadcast information flow

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Embodiment Construction

[0030] The structure and function of the present invention will be described in detail below through embodiments with reference to the accompanying drawings.

[0031] FIG. 2 is a diagram of the internal components of a decoder for measuring BER according to the present invention.

[0032] As shown in Figure 2, the BER measurement of the present invention comprises three parts: the one, for measuring the decoder 100 of BER, extract the synchronous byte extracting part 110 of synchronous byte in MPEG-2 transmission stream; The 2nd, store and extract The synchronous storage part 120 of the synchronous byte received; the third is the memory 130 and the exclusive logic 140 for storing irregular signals.

[0033] In the present invention having the above-mentioned constitution, if the operation principle of the decoder 100 for measuring BER is to be understood in detail, it is as follows,

[0034] The sync byte extracting section 110 of the decoder 100 is input to an MPEG-2 transpo...

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Abstract

This invention relates to digital broadcasting information flow error test device, which mainly uses MPEG-2 to send information when there is large volume of error and to accurately test bit error rate. This invention comprises the following three parts: one synchronous bit extraction part to extract digital broadcasting information flow for testing digital flow error; synchronous bit memory part to extract bit; comparing device to store synchronous bit and irregular codes to test error bit.

Description

【Technical field】 [0001] The present invention relates to the invention of digital broadcasting information flow error detection. The present invention mainly relates to a method for accurately measuring bit error rate (hereinafter referred to as BER) when a large number of errors occur in broadcast communication utilizing MPEG-2 transmission information flow. 【Background technique】 [0002] Recently, digital broadcasts using MPEG-2 transport stream technology have spread rapidly. [0003] Generally, the bit error rate is measured at the decoder side in order to check the quality of MPEG-2 transport stream broadcast communication. [0004] A prior art method for measuring BER is illustrated in FIG. 1 . [0005] FIG. 1(a) shows a block diagram of a general error correction encoding device in an encoder applicable to a digital broadcasting transmitter. (b) in FIG. 1 shows a block diagram of a general error correction decoding apparatus in an encoder applied to a digital bro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/20
Inventor 金镇喆
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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