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Embedded type based code stream analysis system

A code stream analysis, embedded technology, applied in selective content distribution, TV, electrical components, etc., can solve problems such as high price

Inactive Publication Date: 2012-04-18
GUANGZHOU ZHONGDA TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, relevant foreign units and research departments have developed corresponding equipment, but foreign digital TV code stream analysis systems and equipment are difficult to meet my country's national conditions, and the price is expensive, so the development and research of code stream analysis systems and equipment is a must. an important and urgent matter

Method used

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  • Embedded type based code stream analysis system
  • Embedded type based code stream analysis system
  • Embedded type based code stream analysis system

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] The embodiment of the present invention provides an embedded code stream analysis system, which can provide a reliable basis for the measurement and detection of digital TV transmission signals, and will be described in detail below.

[0026] like figure 1 Shown is the overall structure diagram of the system of the present invention, the system uses FPGA+ARM as the hardware platform, and uses Linux as the operating system. The input code stream is analyzed ...

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Abstract

The invention discloses an embedded type based code stream analysis system, comprising a hardware part and a software part. The hardware part is mainly composed of a FPGA (Field Programmable Gate Array) and an ARM (Advanced Risc Machine) and is further provided with peripheral chips, such as an ASI (Asynchronous Serial Interface) chip, an Ethernet interface chip, an SDRAM (Synchronous Dynamic random access memory), FLASH and the like, to constitute a complete embedded system. The software part comprises four modules, namely, an FPGA interface module, a TS (Transport Stream) code stream analysis module, a network server module and a web server module. According to the invention, TS code stream data can be subjected to synchronous byte extraction and packet sequence error check, a data stream can be monitored in real time, and error time and error conditions can be recorded in time.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to an embedded code stream analysis system. Background technique [0002] With the maturation of digital TV technology, the digitization of TV network in our country is also going on intensely. The cable digital TV system forms a complex TS code stream transmission system from the front-end signal reception, encoding, multiplexing, modulation to the set-top box at the user end, and the key data fields in the transmission code stream must be accurately transmitted at the receiving end. be received, otherwise it will directly affect the transmission quality of the cable digital TV system. At present, in the cable digital TV system, a code stream analyzer is used to test the transmission code stream, and use it to detect whether the transmission code stream conforms to the MPEG-2 / DVB standard, whether there is an error in the transmission code stream, what is the error, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N21/24
Inventor 罗笑南孟思明谭南张伟忠李俊曲新春
Owner GUANGZHOU ZHONGDA TELECOMM TECH
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