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Proceedings Paper

High-density mark position recording on a 90-mm phase-change optical disk
Author(s): Hiromichi Kobori; Hiroshi Hasegawa; Toshihiro Sugaya; Naomasa Nakamura; Naoki Morishita; Tadashi Kobayashi; Katsumi Suzuki
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Paper Abstract

The attainable recording density of a thermally balanced phase-change optical disk with the mark position recording method have been studied, focusing on the viewpoint of designing an optical disk memory system. A new recording method with constant duration of the read power level after every write-pulse, called the off-pulse, was applied. A wide overwrite power margin from -20% to +10% was obtained for a bit length of 0.63 micrometers and a track pitch of 0.9 micrometers . These results mean that it is possible to attain 1.3 GByte capacity in a 90 mm double-sided disk with the zoned constant angular velocity format.

Paper Details

Date Published: 8 September 1995
PDF: 7 pages
Proc. SPIE 2514, Optical Data Storage '95, (8 September 1995); doi: 10.1117/12.218724
Show Author Affiliations
Hiromichi Kobori, Toshiba Corp. (Japan)
Hiroshi Hasegawa, Toshiba Corp. (Japan)
Toshihiro Sugaya, Toshiba Corp. (Japan)
Naomasa Nakamura, Toshiba Corp. (Japan)
Naoki Morishita, Toshiba Corp. (Japan)
Tadashi Kobayashi, Toshiba Corp. (Japan)
Katsumi Suzuki, Toshiba Corp. (Japan)

Published in SPIE Proceedings Vol. 2514:
Optical Data Storage '95
Gordon R. Knight; Hiroshi Ooki; Yuan-Sheng Tyan, Editor(s)

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