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A dvb-t2+s2 television signal processing method and system

A DVB-T2, TV signal processing technology, applied in the direction of image communication, electrical components, selective content distribution, etc., can solve the problems of large compression ratio, difficulty, change and reduction of DVB-T and DVB-S data storage space, etc.

Active Publication Date: 2021-01-29
GUANGZHOU CHANGJIA ELECTRONICS
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AI Technical Summary

Problems solved by technology

DVB-T and DVB-S themselves adopt MPEG transport stream format, the compression ratio is large, it is difficult to reduce the storage space of DVB-T and DVB-S data by changing the compression format
With the explosive growth of the number of TV programs, it is difficult for existing storage devices to fully store DVB signals

Method used

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  • A dvb-t2+s2 television signal processing method and system
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  • A dvb-t2+s2 television signal processing method and system

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Embodiment Construction

[0044] 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.

[0045] The compression method of MPEG-2 is very mature, and it is difficult to improve it in compression technology at present, so that the data space occupation is reduced while maintaining good versatility. Therefore, the embodiment of the present invention provides a DVB-T2+S2 The TV signal processing method and system perform lossy compression on the video signal content of the TV signal, reduce the storage space occupied by the TV signal, and improve the utiliz...

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Abstract

The invention provides a DVB-T2+S2 television signal processing method and system, the system includes an audio buffer: used for buffering the digital audio data; a video buffer: used for buffering the digital video data; a high-speed flash memory: used to store all pixel data of all frames of a GOP; a video output module used for playing the processed video data; a permanent storage: used to store processed DVB-T2+S2 TV signals. The invention provides a DVB-T2+S2 television signal processing method and a system thereof. Under the condition that the picture quality is kept as much as possible,the video signal content of the television signal is subjected to lossy compression, the television signal storage occupying space is reduced, the memory utilization ratio is improved, and the methodhas good practicability.

Description

technical field [0001] The invention relates to the field of television broadcasting, in particular to a DVB-T2+S2 television signal processing method and system. Background technique [0002] DVB (Digital Video Broadcasting, Digital Video Broadcasting) is a series of internationally recognized digital television open standards maintained by the DVB project. [0003] DVB system transmission methods are as follows: satellite (DVB-S and DVB-S2), cable (DVB-C), terrestrial wireless (DVB-T), handheld terrestrial wireless (DVB-H). The main difference between these transmission methods is the modulation method used, because different modulation methods require different frequency bandwidths for their applications. DVB-S using high-frequency carrier uses QPSK modulation, DVB-C using low-frequency carrier uses QAM-64 modulation, and DVB-T using VHF and UHF carrier uses COFDM modulation. [0004] Now many set-top boxes on the market are integrated with DVB-T and DVB-S decoding modu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2383H04N21/438H04N21/434H04N21/61H04N21/426H04N21/433
CPCH04N21/2383H04N21/426H04N21/433H04N21/434H04N21/4382H04N21/6112H04N21/6143
Inventor 庄宏东聂云辉张锐焜饶浩中蒋海刚彭昌敬陆伟勇田富春关欢欢李祖峰吴海伦
Owner GUANGZHOU CHANGJIA ELECTRONICS
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