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FUNDAMENTAL RESEARCH ON MULTI-LEVELIZATION OF MAGNETO-OPTICAL RECORDING

Research Project

Project/Area Number 06650419
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 情報通信工学
Research InstitutionEHIME UNIVERSITY

Principal Investigator

TAZAKI Saburo  EHIME UNIVERSITY,FACULTY OF ENGINEERING,PROFESSOR, 工学部, 教授 (00036394)

Co-Investigator(Kenkyū-buntansha) TSUZUKI Shinji  EHIME UNIVERSITY,FACULTY OF ENGINEERING,ASSISTANT, 工学部, 助手 (60236924)
YAMADA Yoshio  EHIME UNIVERSITY,FACULTY OF ENGINEERING,ASSOCIATE PROFESSOR, 工学部, 助教授 (00110833)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1995: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsMAGNETO-OPTICAL RECORDING / MULTI-LEVEL CODE / dk CONSTRAINT CODE / LIGHT MODULATION / MAGNETIC FIELD MODUATION / PRML / TRELLIS CODE / TWO-DIMENSIONAL CODE / 多値記録符号 / PRML方式 / κ制約符号 / C制約符号
Research Abstract

This research project has investigated the effectiveness of multi-levelization of magneto-optical recording for higher density storage.
The subject of the investigation is limited to both "light modulation" and "magnetic field modulation" methods.In order to avoid any additional introduction of higher costs, our project has fundamentally been based on a restriction that the multi-level recording system is to be realized by applying the conventional head and media for the binary recording systems. We could overcome this problem through the selection of writepulse widths in proportion to the code symbols 0,1 or 2.
Next, the required CN ratios at the read back points used to attain a bit error rate (BER) of 10^<-4> have been computer-simulated at transmission bit rates ranging from 12Mbps to 24Mbps, the former rate being the upper limit one for the present state.
The results showed that, for the
(1)light modulation method : edge recording achieved by the use of a (1,7) code+PR (1,2,1) ML is the best combination at bit rates ranging from 12 to 20 Mbps. At 24Mbps, the 3B2T code+PR(1,2,1) ML combination is the most effective.
(2)magnetic field modulation method : the 3B2T code+PR (1,1) ML (or PR (1,2,1) ML) is the best combination at bit rate ranges 12 - 20 Mbps while the 2B1Q code+ PR(1,2,1) ML one is the best at 24 Mbps.
Additionally, we also investigated the effectiveness with trellis codes and two-dimension codes for next generation codes.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] 田崎三郎: "二次元符号の特徴と具体例" 電子情報通信学会技術報告. MR95-5. 31-37 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "Advanced Technology on Digital Recording & Transmission Code" The First Joint kenya-Japan Conference. 1. 1-11 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "FM Family Code" 1995 IEEE Global Telecommunication Conference. 1394-1401 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 田崎三郎: "FM ファミリー符号をベースとしたTCPRとPRMLの特性比較" 電子情報通信学会技術報告. MR95-71. 23-30 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 田崎三郎: "13B9T符号の光磁気記録における有効性について" 電子情報通信学会技術報告. MR95-72. 31-38 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Yoshino: "Performance Comparison of Multi-level Codes for High Density MO Recording" 1996 IEEE International Conference on Communication. To be appeared (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 田崎三郎,西沢台次監修: "先端技術の手ほどきシリーズ デジタル放送" (株)オーム社(未定), (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "Properties of Two-dimensional Codes and an Example Code" Technical Report of IEICE. MR95-5. 31-37 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "Advanced Technology on Digital Recording and Transmission Code" The First Joint Kenya-Japan Conferece. 1. 1-11 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "FM Family Code" IEEE Global Telecommunication Conference. 1394-1401 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "A Comparison on the Performance of TCPR and PRML based on FM Family codes" Technical Report of IEICE. MR95-71. 23-30 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Tazaki: "Effectiveness of 13B9T Code for MO Recording System" Technical Report of IEICE. MR95-72. 31-38 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Yoshino: "Performance Comparisons of Multi-level Codes for High Density MO Recording" IEEE International Conference on Communication. (To be appeared). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 田崎三郎: "二次元符号の特徴と具体例" 電子情報通信学会技術報告. MR95-5. 31-37 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Tazaki: "Advanced Technology on Digital Recordingd Transmission Code" The First Joint Kenya-Japan Conference. 1. 1-11 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Tazaki: "FM Family Code" 1995 IEEE Global Telecommunication Conference. 1394-1401 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 田崎三郎: "FMファミリー符号をベースとしたTCPRとPRMLの特性比較" 電子情報通信学会技術報告. MR95-71. 23-30 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 田崎三郎: "13B9T符号の光磁気記録における有効性について" 電子情報通信学会技術報告. MR95-72. 31-38 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Yoshino: "Performance Comparison of Multi-level Codes for High Density MO Recording" 1996 IEEE International Conference on Communications. (To be appeared). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 田崎三郎,西沢台次 監修: "先端技術の手ほどきシリーズ ディジタル放送" (株)オーム社(未定), (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Tzaki: "Performance Comparisons of Recording Codes based on Sampled Servo Format" 1994 IEEE International Conference on Communications. 1809-1813 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Tzaki: "A Reliable Signal Detection Method for the Combination of PRML Method and Ternary Recording Cade" 1994 International Symposium on Information Theory. 214- (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Tzaki: "Recording Code and Signal Processing for Optical Storage" 光メモリシンポジウム. 105-106 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Tzaki: "Optimization of Dataword Assingnment on 3B-2T Recording Code" Proc.of the First Magneto-Electronics Int.Symposium. 301-303 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 田崎三郎: "波形伝送技術" テレビジョン学会誌. 48. 683-690 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 芳野重俊: "3B2T及び4B3T符号の光磁気記録への適用" 第17回情報理論とその応用シンポジウム. 771-774 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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