12 October 1994 High-density recording for greater than 1-GByte capacity using a 90-mm phase-change optical disk
Author Affiliations +
Proceedings Volume 2338, 1994 Topical Meeting on Optical Data Storage; (1994) https://doi.org/10.1117/12.190174
Event: Optical Data Storage '94, 1994, Dana Point, CA, United States
Abstract
The mark edge recording characteristics of a new thermally balanced phase-change optical disk operating at a wavelength of 690 nm have been studied, especially from the viewpoint of designing an optical disk drive. As a recording method, the multi-pulse write compensation method with constant duration of the read power level immediately after every multi-pulse, called the off-pulse, was applied. A high carrier-to-noise ratio (CNR) of 54 dB, a high erasability of 35 dB, and an overwrite power margin from -15% to +5% were obtained for a bit length of 0.5 micrometers and a track pitch of 1.0 micrometers at 14.7 m/s linear velocity. These results mean that it is possible to design an optical disk drive providing a capacity of 1.1 GBytes using a 90 mm double-sided disk. Further, it has been found that the off-pulse plays a very important role in controlling the precision of mark edge recording.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiromichi Kobori, Hiromichi Kobori, Hiroshi Hasegawa, Hiroshi Hasegawa, Toshihiro Sugaya, Toshihiro Sugaya, Naoki Morishita, Naoki Morishita, Naomasa Nakamura, Naomasa Nakamura, Katsumi Suzuki, Katsumi Suzuki, } "High-density recording for greater than 1-GByte capacity using a 90-mm phase-change optical disk", Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); doi: 10.1117/12.190174; https://doi.org/10.1117/12.190174
PROCEEDINGS
5 PAGES


SHARE
Back to Top