发明名称 |
Recording method using trial write test pattern |
摘要 |
In a write control method on an optical recording, at least one shift amount selected from the defocus amount of a laser beam on a recording medium, the shift amount of a recording position on a recording track and the shift amount of laser power during recording is controlled such that the selected amount falls within a predetermined range. Subsequently, a trial signal is trially recorded at a plurality of trial zones on the recording medium by using a laser power value as a parameter. The recorded trial signal is read and a difference DELTA V between center levels of a highest density waveform and a lowest density waveform is detected. In connection with each trial zone, the laser power value when a reading trial signal which makes the difference DELTA V minimum is recorded is defined as an optimum recording power value. Regular data is recorded at a predetermined storage area on the recording medium by using an optimum laser power value determined in connection with a trial zone closest to the predetermined storage area.
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申请公布号 |
US5732061(A) |
申请公布日期 |
1998.03.24 |
申请号 |
US19960731243 |
申请日期 |
1996.10.11 |
申请人 |
HITACHI, LTD. |
发明人 |
KIRINO, FUMIYOSHI;MAEDA, TAKESHI;IDE, HIROSHI;KAKU, TOSHIMITSU;MITA, SEIICHI;SHIGEMATSU, KAZUO;TODA, TSUYOSHI |
分类号 |
G11B7/0045;G11B7/013;G11B7/125;G11B11/105;G11B20/10;G11B20/12;G11B20/18;(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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