High-density recording systems using PRML with blue LD

Author

Iwanaga, T. ; Ohkubo, S. ; Nakano, M. ; Kubota, M. ; Honma, H. ; Ide, T. ; Katayama, R.

Author_Institution

Functional Devices Res. Labs., NEC Corp., Kawasaki, Japan

fYear

2002

fDate

2002

Firstpage

57

Lastpage

59

Abstract

In high-density optical disk recording systems using blue laser diodes, a NA 0.85 thin cover layer disk system (I. Ichimura et al., Jpn. J. Appl. Phys., vol. 39, pt. 1, no. 2B, pp. 937-942, 2000) and a 0.6 mm-thick substrate disk system (S. Ohkubo et al., Optical Data Storage 2000, PD5, 2000) have been developed. However, the demand for huge capacity with higher data bit rate recording for HD-video recording, and PC application requests (e.g. no cartridge and easy compatibility with DVD/CD-ROM) have been growing rapidly. In this paper, we describe our newly developed two high-density recording systems, which are System 1 (0.6 mm substrate disk system with NA 0.65 objective lens) and System 2 (0.1 mm cover layer disk system with NA 0.85 objective lens), with advanced PRML technology respectively. Moreover, we examined a fingerprint influence and arranged various advantages and disadvantages over each high-density recording system, and considered future applications.

Keywords

lenses; maximum likelihood detection; optical disc storage; partial response channels; semiconductor lasers; surface contamination; video discs; video recording; 0.1 mm; 0.6 mm; CD-ROM compatibility; DVD compatibility; HD-video recording; PC application; PRML; blue LD; blue laser diodes; fingerprint influence; fingerprint tolerance; high-density optical disk recording systems; objective lens NA; recording capacity; recording data bit rate; substrate disk system; thin cover layer disk system; Bit rate; CD recording; CD-ROMs; DVD; Diode lasers; Disk recording; Fingerprint recognition; Lenses; Memory; Optical recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on

Print_ISBN

0-7803-7379-0

Type

conf

DOI

10.1109/OMODS.2002.1028714

Filename

1028714