High-density mark position recording on a 90-mm phase-change optical disk

Hiromichi Kobori; Hiroshi Hasegawa; Toshihiro Sugaya; Naomasa Nakamura; Naoki Morishita; Tadashi Kobayashi; Katsumi Suzuki

doi:10.1117/12.218724

8 September 1995 High-density mark position recording on a 90-mm phase-change optical disk

Hiromichi Kobori, Hiroshi Hasegawa, Toshihiro Sugaya, Naomasa Nakamura, Naoki Morishita, Tadashi Kobayashi, Katsumi Suzuki

Author Affiliations +

Proceedings Volume 2514, Optical Data Storage '95; (1995) https://doi.org/10.1117/12.218724
Event: Optical Data Storage '95, 1995, San Diego, CA, United States

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.

Citation Download Citation

Hiromichi Kobori, Hiroshi Hasegawa, Toshihiro Sugaya, Naomasa Nakamura, Naoki Morishita, Tadashi Kobayashi, and Katsumi Suzuki "High-density mark position recording on a 90-mm phase-change optical disk", Proc. SPIE 2514, Optical Data Storage '95, (8 September 1995); https://doi.org/10.1117/12.218724

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