发明名称 |
METHOD AND DEVICE FOR CONTROLLING LASER POWER OF SEMICONDUCTOR LASER, METHOD AND DEVICE FOR RECORDING/ REGENERATING WITH PHOTOMAGNETIC RECORDING MEDIUM, AND METHOD AND DEVICE FOR RECORDING/REGENERATING WITH OPTICAL RECORDING MEDIUM |
摘要 |
PROBLEM TO BE SOLVED: To provide a driving method for a semiconductor laser in which the power consumption of an output transistor is reduced. SOLUTION: The series circuit of an output transistor Qb and a semiconductor laser SL is applied with a variable power-source voltage Vcc which is controlled so that a difference between the variable power-source voltage Vcc and the peak hold voltage of the operation voltage of the semiconductor laser SL is almost constant. |
申请公布号 |
JP2002158395(A) |
申请公布日期 |
2002.05.31 |
申请号 |
JP20000351407 |
申请日期 |
2000.11.17 |
申请人 |
SONY CORP |
发明人 |
FUJIIE KAZUHIKO;TAKESHITA YASUYUKI |
分类号 |
G11B11/105;G11B7/00;G11B7/0045;G11B7/125;H01S5/042;H01S5/062 |
主分类号 |
G11B11/105 |
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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