A HIGH-DENSITY PHASE-CHANGE OPTICAL DISK SYSTEM POSSESSING READ WRITE COMPATIBILITY WITH 90 MM MAGNETOOPTICAL DISKS

被引：2

作者：

ICHINOSE, M ^{[1
]}

ISHIDA, T ^{[1
]}

TAKAGI, Y ^{[1
]}

ITO, M ^{[1
]}

OHARA, S ^{[1
]}

SATOH, I ^{[1
]}

OKAZAKI, Y ^{[1
]}

IMANAKA, R ^{[1
]}

机构：

[1] MATSUSHITA ELECT IND CO LTD,DIV DISK SYST,KADOMA,OSAKA 571,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷 / 11B期

关键词：

PHASE-CHANGE OPTICAL DISK; OVERWRITE; 90 MM OPTICAL DISK; WRITE COMPATIBILITY; NARROW TRACK; HIGH-DENSITY RECORDING; CROSS-ERASE; AMORPHOUS STATE; CRYSTALLIZING STATE; GROOVE RECORDING; GETESB; PHASE JITTER;

D O I：

10.1143/JJAP.32.5320

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-density recording characteristics of phase-change optical disks were studied using 2-7 pulse-position-modulation (ppm) in-groove recording. Carrier-to-noise-ratio (CNR) was over 50 Db at a mark length of 0.60 mum and the crosstalk at the track pitch of 1.10 mum was less than -30 Db. In addition, a 256 MB 90 mm overwritable PC optical disk system having read/write compatibility with the ISO 128 MB MO disk has been developed based on the acquired results. The drive is based on the 90 mm MO drive at a wavelength of 780 nm and NA of 0.53. The user capacity of 256 MB was achieved using a mark length of 0.63 mum, track pitch of 1.25 mum, 2-7 ppm in-groove recording, and MCAV with 10 zones. The number of sectors per track was varied from 31 to 49.

引用

页码：5320 / 5323

页数：4

共 3 条

[1] OVERWRITE CHARACTERISTICS IN PHASE-CHANGE OPTICAL DISK [J].

ISHIDA, T ;

OHARA, S ;

AKAHIRA, N ;

OHTA, T ;

YOSHIDA, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 :129-133

[2]

OHARA S, 1991, P SOC PHOTO-OPT INS, V1499, P187, DOI 10.1117/12.45923

[3] HIGH-SPEED OVERWRITABLE PHASE-CHANGE OPTICAL DISK MATERIAL [J].

YAMADA, N ;

OHNO, E ;

AKAHIRA, N ;

NISHIUCHI, K ;

NAGATA, K ;

TAKAO, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1987, 26 :61-66

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