Viterbi decoding apparatus and method applicable to digital multimedia broadcast receiver

A multimedia broadcasting and Viterbi decoding technology, applied in the field of digital multimedia broadcasting receivers, can solve problems such as low signal strength, achieve efficient use, reduce pulse frequency, and reduce driving power

Inactive Publication Date: 2009-06-03
LG ELECTRONIC (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, if a mobile tool such as a car wants to receive a signal in a serious interference (fading) channel environment such as the city center, the actual received signal strength is very small

Method used

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  • Viterbi decoding apparatus and method applicable to digital multimedia broadcast receiver
  • Viterbi decoding apparatus and method applicable to digital multimedia broadcast receiver
  • Viterbi decoding apparatus and method applicable to digital multimedia broadcast receiver

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Embodiment Construction

[0038] The embodiments of the Viterbi decoding device and method 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 overall structure of a DMB signal receiving system provided with a Viterbi decoder in the present invention.

[0040] As shown in Figure 1, the DMB receiver in the present invention will receive the transmitted broadcast signal through the antenna 1, and the received broadcast signal will be converted into a pass-band (Pass-band) of intermediate frequency (Intermediate Frequency) by the tuner 2 Signal.

[0041] The signal tuned by the above-mentioned tuner 2, in order to maintain a certain size, the gain value calculated according to the size of the reference signal will be multiplied in the AGC (Automatic Gain Control) terminal 3, and the A / D (Analog-Digital Converter ) module 4, the above-mentioned signal of a certain s...

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Abstract

This invention relates to digital multi-media broadcasting viterbi coding device and method, which compensates digital multi-media broadcasting sending error and receives rolled coding data and enters branch by different status at rack to pick out minimum path as existence path to process inverse tracing and coding. The invention viterbi device comprises the following parts: single terminal memory for data reading and writing; controller to trace and read above written data through single terminal on above roller coding process to send data into single terminal memory; multiple buffer to temporarily store.

Description

(1) Technical field [0001] The present invention relates to the technology of a digital multimedia broadcasting (DMB) receiver, in particular to the technology of a Viterbi decoding device and method installed in a digital multimedia broadcasting receiver required for transmission error repair. (2) Background technology [0002] Recently, digitization in the broadcasting field has greatly influenced the field of analog radio broadcasting, thereby promoting the early arrival of digital radio broadcasting. [0003] In addition, it facilitates the development of existing voice radio services And digital multimedia broadcasting (Digital Multimedia Broadcasting: hereinafter referred to as DMB) including data transmission and multimedia services. Here, digital multimedia broadcasting can effectively solve the phenomenon of noise and miscommunication in transmission channels, improve data transmission efficiency, and provide various multimedia services. [0004] Digital Multimed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/64H04N5/44H04N19/89
Inventor 吴洙焕一秀曺一秀
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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