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Digital multimedia broadcasting receiver channel decoder

A technology for multimedia broadcasting and decoders, applied in the field of channel decoders, can solve the problems of diffusion (DopplerSpread, etc.) and achieve the effect of improving performance

Inactive Publication Date: 2008-02-13
LG ELECTRONIC (HUIZHOU) CO LTD
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Problems solved by technology

[0008] Moreover, the transmission channel of DMB broadcasting is a wireless mobile receiving channel, not only the amplitude (Amplitude) of the received signal changes (Time-Varying) at any time (Time-Varying), but also, affected by the mobile receiver, the spectrum of the received signal (Spectrum) Doppler spread ( Doppler Spreading) phenomenon

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  • Digital multimedia broadcasting receiver channel decoder

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Embodiment Construction

[0038] Embodiments of the channel decoder of the digital multimedia broadcasting receiver of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Fig. 1 is a block diagram of the internal structure of the channel decoder of the DM receiver of the present invention.

[0040] As shown in Figure 1, the channel decoder of DMB receiver of the present invention is made up of following several parts: the signal that transmits is carried out OFDM wave detection, the signal of input frequency deinterleaving, it is separated into FIC (Fast Information Channel: high-speed information channel ) and MSC (Main Service Channel: Main Service Channel) data, and output block aggregator 101; input the above-mentioned separated MSC data, and perform time deinterleaving device 102 for time deinterleaving; in order to perform time deinterleaving, temporarily store data SRAM (static memory) 104; Input above-mentioned FIC and MSC, carry out mul...

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Abstract

A channel decoder of digital multimedia broadcast receiver consists of block collector for separating transmitted signal to be FIC data and MIC data, time deinterlacer for carrying out time inverse interlacing, rotary decoder for revising arbitrary error, FIC decoder for decoding FIC secondary channel information, DMB selector for selecting data passing through multimedia coding from MSC data, DMB-TS synchronous unit for coordinating synchronization, rotary deinteralcer for rearranging data being interlaced by TS, RS decoding unit for restoring data being RS-coded and data forming unit for carrying out conversion .

Description

(1) Technical field [0001] The present invention relates to the technology of the digital multimedia broadcasting (DMB) receiver, especially about improving the mobile receiving performance of the digital multimedia broadcasting (DMB) receiver, and a channel decoder of a digital multimedia broadcasting (DMB) receiver which efficiently uses channels . (2) Background technology [0002] The digitization of broadcasting has brought influence to the existing analog radio broadcasting, and brought the era of digital radio broadcasting ahead of schedule. [0003] Moreover, not only existing voice radio services can be provided, but also digital multimedia broadcasting (DMB) including data transmission and multimedia services is possible. [0004] The above-mentioned digital multimedia broadcasting has the advantages of effectively preventing noise and distortion on the transmission channel, high transmission efficiency, and being able to provide various multimedia services. [0...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/00H04N5/44H04N7/52
Inventor 辛钟雄黄龙硕
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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