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Simplified Decoder of the Modulation Code for DVD System  

Kim Hyoung seok (동국대학교 전자공학과 통신 및 정보 저장 연구실)
Lee Joohyun (동국대학교 전자공학과 통신 및 정보 저장 연구실)
Lee Jaejin (동국대학교 전자공학과 통신 및 정보 저장 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.4C, 2005 , pp. 247-252 More about this Journal
Abstract
Currently, the decoder receives a 16 bit channel input and restores an 8 bit data symbol in the DVD system. Such modulation code of DVD is the EFMplus code, and it is composed of a main table and a sub table. For reducing the size of the code table, this paper divided the code table into 3 groups and we implemented the decoder using this new code table. After all, this method enables us to reduce the size of ROM as reducing the total number of code from 1376 to 750.
Keywords
EFMPlus code; DVD; Optical receding system;
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  • Reference
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2 K. A. S. Immink 'EFMPlus : The coding format of the multimedia compact disc', IEEE Trans. Consumer Electronics, vol. 3, pp. 491-497, Aug. 1995
3 P. T. Tran, 'Demodulation of DVD codeword using dependency-Sorted tables for duplicate /dependent and unique /non-dependent mapping', U. S. Patent 6, 195, 778, Feb. 27, 2001