发明名称 |
Method of recording information on optical recording medium, and information recording and reproducing apparatus |
摘要 |
<p>An information recording method enables the precise formation of a recording mark on a recording layer having a high light transmittance such as an L1 layer of a double-layered optical recording medium. The information recording method uses the following recording strategy. A laser beam is pulse-modulated so as to create a pulse series including a write pulse of a recording power and a cooling pulse of a base power. Data to be recorded is modulated to have a length of a recording mark along a track of the recording layer. At the same time, the length of the recording mark is made to correspond to an integral multiple nT of T where T is one clock cycle. An nT recording mark corresponding to nT is recorded by using the same number of write pulses and cooling pulses when n is 4 or larger. Moreover, an average width AveTc for a single cooling pulse width Tc is set to satisfy: 1.0 < AveTc/T < 1.6 and a total pulse width SumTc of the used cooling pulses is set to satisfy: 0.5 ≤ SumTc/nT ≤ 0.8.
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申请公布号 |
EP1638092(A3) |
申请公布日期 |
2007.01.24 |
申请号 |
EP20050020491 |
申请日期 |
2005.09.20 |
申请人 |
TDK CORPORATION |
发明人 |
MIZUSHIMA, TETSURO;MIURA, HIDEAKI;KATO, TATSUYA;KAKIUCHI, HIRONORI;SHINGAI, HIROSHI;YOSHINARI, JIRO |
分类号 |
G11B7/006 |
主分类号 |
G11B7/006 |
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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