发明名称 |
Optical disc-shaped recording medium recording device and method for setting illumination power thereof |
摘要 |
A driving device and a calibration method for an ablation write-once type optical disc in which the recording light volume can be calibrated accurately without using an over-power for positively recording data on the ablation write-once type optical disc. A playback output by an optical head 3 for recording/reproducing data by scanning an ablation write-once type optical disc 1 with a laser light beam is supplied to an optimum recording light volume decision unit 4. A light recording data controller 6 controls a laser driving controller 5 for controlling the laser light volume of an optical head 3 for recording two different recording patterns with different repetition periods with various recording light volumes. The optimum recording light volume decision unit 4 detects the asymmetry amount from the playback outputs of the two different recording patterns and determines an optimum recording light volume of the ablation write-once type optical disc 1 based on the asymmetry amounts at the various recording light volumes.
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申请公布号 |
US5898656(A) |
申请公布日期 |
1999.04.27 |
申请号 |
US19970918989 |
申请日期 |
1997.08.27 |
申请人 |
SONY CORPORATION |
发明人 |
TAKIGUCHI, TAIZO |
分类号 |
G11B7/0045;G11B7/125;(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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地址 |
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