Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study of Front-end System for BD Recorder

BD 기록기를 위한 전단 시스템에 관한 연구

  • Choi, Goang-Seog (School of Information and Communication Engineering, Chosun University)
  • 최광석 (조선대학교 정보통신공학부)
  • Published : 2007.06.25
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Abstract

The front-end system having a capable of 2x reading and writing of BD-R/Ra/ROM is developed. Its readability is improved by adopting 5-tap adaptive partial response maximum likelihood (PRML) with the PR(a,b,c,d,e) type channel. Due to the proposed PRML, less than $2{\times}10^{-4}$ of the bit error rate (BER) is achieved with radial and tangential tilt margin of over${\mp}0.6{\circ}$ on 25GB disc in 2x speed. The method of an optimum Power control (OPC) for stable writing of various BD-R/RE is proposed. The developed chip contains 14-million transistors in a $60mm^2$ dies, and is fabricated in $0.18-{\mu}m$ CMOS technology.

BD-R/RE/ROM을 2배속으로 기록하고 재생할 수 있는 전단 시스템을 개발하였다. 시스템의 재생능력은 PR(a,b,c,d,e)형 5탭 PRML을 채택함으로써 향상되었다. 제안된 PRML덕분에 2배속 25GB 디스크에서 ${\mp}0.6{\circ}$ 이상의 라디알 및 탄젠셜 틸드 마진을 가지고도 $2{\times}10^{-4}$이하의 BER을 얻을 수 있었다. 최적파워레벨이 다른 다양한 BD-R/RE의 안정적인 기록을 위해 OPC 방법에 대해서도 제안하였다. 개발한 시스템은 $0.18-{\mu}m$ CMOS공정으로 $60mm^2$ 면적에 1,400만 트랜지스터를 칩에 집적하였다.

Keywords

References

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