发明名称 |
Optical information recording method |
摘要 |
An optical information recording method in which a digital signal subjected to pulse width modulation is overwritten, by using one laser spot, on an optical disk including a first dielectric film, a recording film, a second dielectric film and a reflecting film stacked on a substrate in this order; the recording film having composition defined by a formula GexSbyTez satisfying 45<=z<=55.5, 0.5<=y/(x+y)<=0.72 and x+y+z=100; the recording film having a thickness of 10 to 35 nm; the second dielectric film having a thickness of 5 to 40 nm; the reflecting film having a thickness of 35 nm or more; the optical information recording method comprising the steps of: converting each of a plurality of pulses contained in the digital signal, into a pulse train composed of pulses; and modulating a laser power between an erasing level and a recording level so as to overwrite the digital signal on the optical disk. |
申请公布号 |
US5289453(A) |
申请公布日期 |
1994.02.22 |
申请号 |
US19920937101 |
申请日期 |
1992.08.31 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OHNO, EIJI;NISHIUCHI, KENICHI;YAMADA, NOBORU;AKAHIRA, NOBUO |
分类号 |
G11B7/0045;G11B7/24;G11B7/243;G11B7/258;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/0045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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