公开(公告)号：US06621778B1

公开(公告)日：2003-09-16

申请号：US09721797

申请日：2000-11-24

申请人： Shu-Tai Lu ,  Kuang-Yang Chuang ,  Jyh-Shong Ju ,  Feng-Hsiang Lo ,  Kuo-Ding Shin ,  Yong-Long Lee ,  Ching-Ping Kuei

发明人： Shu-Tai Lu ,  Kuang-Yang Chuang ,  Jyh-Shong Ju ,  Feng-Hsiang Lo ,  Kuo-Ding Shin ,  Yong-Long Lee ,  Ching-Ping Kuei

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。

公开(公告)号：US06556526B1

公开(公告)日：2003-04-29

申请号：US09583997

申请日：2000-05-30

申请人： Shuh-Tai Lu ,  King Yin Wang ,  Kuang-Yang Chuang ,  Ching-Ping Kuei

发明人： Shuh-Tai Lu ,  King Yin Wang ,  Kuang-Yang Chuang ,  Ching-Ping Kuei

IPC分类号： G11B7005

CPC分类号： G11B7/005 ,  G11B7/00375 ,  G11B20/10009 ,  G11B2020/1461

摘要： The present invention relates to an apparatus and method for analyzing the read-out signal of an optical storage media and is especially suitable for the HF signal read from the digital video disk (DVD), wherein the HF signal comprises many different signals whose periods are integer times of the system period. The present apparatus can be used to record the maximum or minimum values of specific period of signals for further statistical analyses. Furthermore, the AC and DC components of the HF signal can be processed independently and the results will be combined together for further processes. Therefore, it only takes moderate memory capacity and acquisition time to obtain accurate maximum or minimum values of the specific period of signals.

摘要翻译： 本发明涉及一种用于分析光存储介质的读出信号的装置和方法，并且特别适用于从数字视频盘（DVD）读取的HF信号，其中HF信号包括许多不同的信号，其周期是 系统周期的整数倍。 本装置可用于记录特定信号周期的最大或最小值用于进一步的统计分析。 此外，可以独立地处理HF信号的AC和DC分量，并将结果组合在一起用于进一步的处理。 因此，只需要适度的存储容量和采集时间才能获得特定信号周期的精确最大值或最小值。