High-density phase-change optical disc with low-to-high signal direction

被引:0
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作者
Nakamura, Naomasa [1 ]
Morishita, Naoki [1 ]
Suzuki, Katsumi [1 ]
Yusu, Keiichiro [2 ]
Ashida, Sumio [2 ]
Kikitsu, Akira [2 ]
Ichihara, Katsutaro [2 ]
机构
[1] Multimedia Eng. Laboratory, Toshiba Corp., 70, Yanagi-cho, Saiwai-ku, Kawasaki 210-8501, Japan
[2] Research and Development Center, Toshiba Corp., 1, Komukai Toshiba-cho, Saiwai-ku, Kawasaki 210-8582, Japan
关键词
Theoretical; (THR);
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摘要
High-density recording capability has been demonstrated in a modified low-to-high type phase-change disc which consists of multilayered lower dielectric film and an AlN upper protective layer. The thermal simulation shows that the disc is effective for decreasing thermal interference. A carrier to noise ratio (CNR) of more than 52 dB and an overwriting erase ratio of more than 30 dB were obtained at a bit length of 0.28 μm and a track pitch of 0.6 μm on both land and groove at a linear velocity of 8.2 m/s.
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页码:1711 / 1712
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