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Signal receiving test system based on digital television terrestrial broadcasting (DTTB)

A digital TV terrestrial and signal receiving technology, applied in the direction of digital video signal modification, TV, electrical components, etc., can solve the problems of multiple and bulky test equipment, reduce signal transmission power, reduce interference, flexible frequency planning and coverage area Effect

Inactive Publication Date: 2012-06-27
江西省南城县网信电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many and cumbersome test equipment, which needs power support, and the test results need to be recorded manually, and finally the test results in different places need to be manually counted

Method used

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  • Signal receiving test system based on digital television terrestrial broadcasting (DTTB)
  • Signal receiving test system based on digital television terrestrial broadcasting (DTTB)
  • Signal receiving test system based on digital television terrestrial broadcasting (DTTB)

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Embodiment Construction

[0033] 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.

[0034] figure 2 The test system shown is a test of the overall performance of the entire transmission system under actual terrestrial broadcast transmission conditions, mainly testing the actual reception of the entire transmission system in the case of an open circuit.

[0035] The embodiment of the present invention provides a signal receiving test system based on digital TV terrestrial broadcasting, so image 3 As shown, the signal receiving test system includ...

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PUM

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Abstract

An embodiment of the invention discloses a signal receiving test system based on digital television terrestrial broadcasting (DTTB). The signal receiving test system comprises: a signal demodulation module, a transmission mode, a signal analysis processing module and a control module, wherein the signal demodulation module is used to carry out analog / digital conversion to an analog signal received by a receiving antenna and acquire a digital data; the transmission mode is used to transmit the digital signal acquired by the signal demodulation module; the signal analysis processing module is used to analyze and process the digital signal transmitted by the transmission mode, acquire analyzed and processed data and generate a control signal; the control module is used to receive the control signal generated by the signal analysis processing module and sends the control signal to the signal demodulation module so that the signal demodulation module carries out corresponding operation processing according to the control signal. According to the embodiment of the invention, a system C / N threshold and signal emission power can be reduced; current interferences to a television program can be reduced; various kinds of interferences / distortions can be resisted. The system can support fixed, portable, walking, hand-held or mobile receptions.

Description

technical field [0001] The invention relates to the technical field of digital TV terrestrial broadcasting, in particular to a signal receiving test system based on digital TV terrestrial broadcasting. Background technique [0002] Since the 1990s, the rapid development of technologies such as large-scale integrated circuits, computers, digital signal processing, image compression, and network transmission has promoted the rapid development of radio and television technology and services. Broadcasting and TV are developing towards digitalization from program editing, production, storage, transmission and reception. The high program quality and high spectrum utilization rate of digital broadcasting TV, the development of new generation high-definition TV, digital audio broadcasting and mobile multimedia broadcasting, And multimedia interactive data broadcasting business will become the development trend of radio and television. There are three main types of radio and televis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N7/64H04N19/89
Inventor 罗晴明罗春耕
Owner 江西省南城县网信电子有限公司
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