Automatic calibration of the output power of a pickup head for an optical information recording apparatus
    1.
    发明授权
    Automatic calibration of the output power of a pickup head for an optical information recording apparatus 失效
    自动校准光信息记录装置的拾取头的输出功率

    公开(公告)号:US06621778B1

    公开(公告)日:2003-09-16

    申请号:US09721797

    申请日:2000-11-24

    IPC分类号: G11B712

    CPC分类号: G11B7/1263

    摘要: This specification discloses an automatic calibration method for the output power of a pickup head for an optical information recording apparatus, which avoids laser diode thermal effects using duty cycle control and obtains the correct conversion function between the output current of a front monitor diode and the output power of the pickup head by curve fitting. This method only needs to measure one set of front monitor diode output current and output power conversion function of the pickup head. The same conversion function is applicable to all pickup heads of the same type. The optical information recording apparatus automatically detects the corresponding parameter for the pickup head. Each optical information recording apparatus can also automatically detect the specific power control parameters for each set of power control channel to obtain the optimal recording characteristics.

    摘要翻译: 本说明书公开了一种用于光信息记录装置的拾取头的输出功率的自动校准方法,其避免了使用占空比控制的激光二极管热效应,并获得前监视二极管的输出电流与输出之间的正确转换功能 通过曲线拟合获得头部的力量。 该方法只需要测量一组前置监视二极管输出电流和输出电源转换功能的拾音头。 相同的转换功能适用于相同类型的所有拾音头。 光信息记录装置自动检测拾取头的相应参数。 每个光学信息记录装置还可以自动检测每组功率控制信道的特定功率控制参数以获得最佳记录特性。