发明名称 |
APPARATUS AND METHOD OF DETERMINING A POWER PARAMETER FOR WRITING/ERASING INFORMATION ON AN OPTICAL MEDIUM |
摘要 |
The invention relates to an apparatus and method of determining a value of a write/erase power parameter (Ptarget) for writing/erasing information on an optical recording medium by means of a radiation beam. The method is based on the curve-fitting of a function by a set of parameters a-b-c, said function establishing a relation between a product of the power level (P) of the radiation beam with a modulation factor (M) of the recorded signals, and the power level (P). The set of parameters are thus used for solving an equation establishing a relation between a gamma curve and the power level (P), the solution of said equation being considered as the optimum value of the write/erase power parameter (Ptarget). An optimum power level (Popt) can thus be derived from the write/erase power parameter (Ptarget). Use : writing/erasing of an optical recording medium.
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申请公布号 |
KR20050109527(A) |
申请公布日期 |
2005.11.21 |
申请号 |
KR20057016338 |
申请日期 |
2005.09.02 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
VAN DEN HOOGEN ANTONIUS JACOBUS JOSEPHUS;XU CAI GANG |
分类号 |
G11B7/0045;G11B7/0055;G11B7/006;(IPC1-7):G11B7/004;G11B7/005;G11B7/125 |
主分类号 |
G11B7/0045 |
代理机构 |
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主权项 |
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地址 |
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