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1. 发明申请

US20050025018A1 APPARATUS AND METHOD FOR AUTOMATIC POWER CONTROL 审中-公开
标题翻译：用于自动功率控制的装置和方法
公开(公告)号：US20050025018A1
公开(公告)日：2005-02-03
申请号：US10604507
申请日：2003-07-28
申请人： Han-Wen Hsu , Chih-Hsiung Chu , Pao-Ping Ma
发明人： Han-Wen Hsu , Chih-Hsiung Chu , Pao-Ping Ma
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/1263 , G11B7/00456
摘要： An apparatus and method for automatic power control is disclosed. An optical recording apparatus utilizes a low-speed, peak-hold circuit to obtain and output a maximum of a front photodiode output signal during a predetermined window or plurality of windows of a total duration long enough to allow maximum peak-hold signal to stabilize. After stabilization, the maximum peak-hold signal is sampled and held in a sample and hold circuit. A reset then clears the signal and reinitializes the peak-hold circuit. In accordance with the difference between a reference voltageand the held peak-hold signal, a feedback controller unit outputs the required current level into a driving unit for producing desired recording pulses into a laser diode for recording information pits into an optical disc. A calibration gain may be used when, due to insufficient FPD response speed, the held signal is different than the real optical power output.
摘要翻译：公开了一种用于自动功率控制的装置和方法。光学记录装置利用低速峰值保持电路在预定窗口或者在足够长的总持续时间的多个窗口中获得和输出最大的前光电二极管输出信号，以允许最大峰值保持信号稳定。稳定后，最大峰值保持信号采样并保持在采样和保持电路中。复位然后清除信号并重新初始化峰值保持电路。根据参考电压和保持的峰值保持信号之间的差异，反馈控制器单元将所需的电流电平输出到用于将信息凹坑记录到光盘中的用于产生期望的记录脉冲的激光二极管中。由于FPD响应速度不足，保持信号与实际光功率输出不同，可能会使用校准增益。

2. 发明授权

US07313068B2 Apparatus and method for automatic power control 有权
标题翻译：用于自动功率控制的装置和方法
公开(公告)号：US07313068B2
公开(公告)日：2007-12-25
申请号：US11465461
申请日：2006-08-18
申请人： Han-Wen Hsu , Chih-Hsiung Chu , Pao-Ping Ma
发明人： Han-Wen Hsu , Chih-Hsiung Chu , Pao-Ping Ma
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/00456
摘要： An apparatus and method for automatic power control is disclosed. An optical recording apparatus utilizes a low-speed, peak-hold circuit to obtain and output a maximum of a front photodiode output signal during a predetermined window or plurality of windows of a total duration long enough to allow maximum peak-hold signal to stabilize. After stabilization, the maximum peak-hold signal is sampled and held in a sample and hold circuit. A reset then clears the signal and reinitializes the peak-hold circuit. In accordance with the difference between a reference voltage and the held peak-hold signal, a feedback controller unit outputs the required current level into a driving unit for producing desired recording pulses into a laser diode for recording information pits into an optical disc. A calibration gain may be used when, due to insufficient FPD response speed, the held signal is different than the real optical power output.
摘要翻译：公开了一种用于自动功率控制的装置和方法。光学记录装置利用低速峰值保持电路在预定窗口或者在足够长的总持续时间的多个窗口中获得和输出最大的前光电二极管输出信号，以允许最大峰值保持信号稳定。稳定后，最大峰值保持信号采样并保持在采样和保持电路中。复位然后清除信号并重新初始化峰值保持电路。根据参考电压和保持的峰值保持信号之间的差异，反馈控制器单元将所需的电流电平输出到用于将信息凹坑记录到光盘中的用于产生期望的记录脉冲的激光二极管中。由于FPD响应速度不足，保持信号与实际光功率输出不同，可能会使用校准增益。

3. 发明申请

US20060280080A1 APPARATUS AND METHOD FOR AUTOMATIC POWER CONTROL 有权
标题翻译：用于自动功率控制的装置和方法
公开(公告)号：US20060280080A1
公开(公告)日：2006-12-14
申请号：US11465461
申请日：2006-08-18
申请人： Han-Wen Hsu , Chih-Hsiung Chu , Pao-Ping Ma
发明人： Han-Wen Hsu , Chih-Hsiung Chu , Pao-Ping Ma
IPC分类号： G11B7/125 , G11B7/12
CPC分类号： G11B7/1263 , G11B7/00456
摘要： An apparatus and method for automatic power control is disclosed. An optical recording apparatus utilizes a low-speed, peak-hold circuit to obtain and output a maximum of a front photodiode output signal during a predetermined window or plurality of windows of a total duration long enough to allow maximum peak-hold signal to stabilize. After stabilization, the maximum peak-hold signal is sampled and held in a sample and hold circuit. A reset then clears the signal and reinitializes the peak-hold circuit. In accordance with the difference between a reference voltage and the held peak-hold signal, a feedback controller unit outputs the required current level into a driving unit for producing desired recording pulses into a laser diode for recording information pits into an optical disc. A calibration gain may be used when, due to insufficient FPD response speed, the held signal is different than the real optical power output.
摘要翻译：公开了一种用于自动功率控制的装置和方法。光学记录装置利用低速峰值保持电路在预定窗口或者在足够长的总持续时间的多个窗口中获得和输出最大的前光电二极管输出信号，以允许最大峰值保持信号稳定。稳定后，最大峰值保持信号采样并保持在采样和保持电路中。复位然后清除信号并重新初始化峰值保持电路。根据参考电压和保持的峰值保持信号之间的差异，反馈控制器单元将所需的电流电平输出到用于将信息凹坑记录到光盘中的用于产生期望的记录脉冲的激光二极管中。由于FPD响应速度不足，保持信号与实际光功率输出不同，可能会使用校准增益。

4. 发明授权

US07190454B2 Automatic power controller 有权
标题翻译：自动电源控制器
公开(公告)号：US07190454B2
公开(公告)日：2007-03-13
申请号：US10803973
申请日：2004-03-19
申请人： Tse-Hsiang Hsu , Pao-Ping Ma
发明人： Tse-Hsiang Hsu , Pao-Ping Ma
IPC分类号： G01B11/00
CPC分类号： G01J1/46 , G01J1/32
摘要： An automatic power controller includes a photo detector for detecting the output power of the laser light source and generating a detection signal, a comparator for comparing the detection signal with a reference signal and outputting a comparison signal, a signal source for providing the reference signal with different voltages representing different output power levels of the laser light source to be set, and a gain-adjustable amplifier for receiving the comparison signal and generating an output signal. The gain of the gain-adjustable amplifier is adjusted so that the voltage difference between the steady-state voltage of the comparison signal and the voltage of the reference signal is kept substantially unchanged regardless of the output power of the laser light source, the occurrence of charging/discharging the capacitor in the comparator is reduced. Therefore the automatic power controller can rapidly reach its new steady state while changing the laser output power.
摘要翻译：一种自动功率控制器，包括用于检测激光光源的输出功率并产生检测信号的光电检测器，用于将检测信号与参考信号进行比较并输出比较信号的比较器，用于提供参考信号的信号源表示要设置的激光光源的不同输出功率电平的不同电压，以及用于接收比较信号并产生输出信号的增益可调放大器。调整增益可调放大器的增益，使得比较信号的稳态电压与参考信号的电压之间的电压差基本上保持不变，而与激光光源的输出功率无关，比较器中的电容器的充电/放电减少。因此，在改变激光输出功率的同时，自动功率控制器可以迅速达到新的稳定状态。

5. 发明申请

US20060256679A1 LASER POWER CONTROLLING METHOD FOR RECORDING DATA AND RELATED APPARATUS 审中-公开
标题翻译：用于记录数据的激光功率控制方法及相关装置
公开(公告)号：US20060256679A1
公开(公告)日：2006-11-16
申请号：US10908402
申请日：2005-05-10
申请人： Kuang-Jung Chang , Pao-Ping Ma
发明人： Kuang-Jung Chang , Pao-Ping Ma
IPC分类号： G11B7/12
CPC分类号： G11B7/1263
摘要： A laser power controlling method for controlling power outputted from a laser to record data onto an optical disc and a related apparatus are disclosed. The laser power controlling method includes writing data onto the optical disc according to a characteristic of a write power of the laser, halting writing the data at a stopping point, evaluating the data recorded on the optical disc for generating a first evaluating result, adjusting the characteristic of the write power according to the first evaluating result, and utilizing the laser to restart writing data onto the optical disc from a starting point according to an adjusted characteristic of the write power, wherein there is a gap between the starting point and the stopping point.
摘要翻译：公开了一种用于控制从激光器输出的光以将数据记录到光盘上的激光功率控制方法及相关装置。激光功率控制方法包括：根据激光写入功率的特性，停止在停止点写入数据，对光盘上记录的数据进行评估，产生第一评估结果，将数据写入光盘;调整根据第一评估结果的写入功率的特性，并且利用激光器根据写入功率的调整特性从起始点开始将数据写入光盘，其中起始点和停止之间存在间隙点。

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