发明名称 |
Information recording method, information recording medium, and information recording apparatus |
摘要 |
A recording medium in which information is to be recorded is permitted to get into a first state by a first power level of an energy beam and permitted to get into a second state by a second power level higher than the first power level of the energy beam. The information is recorded on the recording medium by moving the energy beam and the recording medium relatively to each other and irradiating the recording medium with the energy beam so that the first and second states are formed with predetermined lengths and at predetermined intervals on the recording medium. Four power levels (first, second, third and fourth power levels) are used as the power level of the energy beam. The information is recorded while the second power level is increased to x times and the first, third and fourth power levels are increased to y times. The information recorded as described above is reproduced, and reproductive jitter is observed. The magnification factors x and y are adjusted so that the value of the reproductive jitter is not larger than a predetermined value.
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申请公布号 |
US6650607(B1) |
申请公布日期 |
2003.11.18 |
申请号 |
US19990415263 |
申请日期 |
1999.10.12 |
申请人 |
HITACHI, LTD. |
发明人 |
KANDO HIDEHIKO;MAEDA TAKESHI;MINEMURA HIROYUKI;TODA TSUYOSHI;MIYAUCHI YASUSHI;MIYAMOTO MITSUHIDE |
分类号 |
G11B7/0045;G11B7/006;G11B7/007;G11B7/125;(IPC1-7):G11B5/76 |
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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