公开(公告)号：US06785211B2

公开(公告)日：2004-08-31

申请号：US09917267

申请日：2001-07-30

申请人： Jong-hoon Lee ,  Sung-ro Go ,  Kyoung-bok Jin ,  Ki-bong Yun

发明人： Jong-hoon Lee ,  Sung-ro Go ,  Kyoung-bok Jin ,  Ki-bong Yun

IPC分类号： G11B390

CPC分类号： G11B7/126

摘要： An automatic power control (APC) apparatus reducing time necessary for stabilizing an APC circuit at the initial stage of automatic power control of a disc drive is provided. The APC circuit is designed such that a voltage of a predetermined percent of an expected output voltage is previously added to an APC output voltage of the APC circuit of a laser diode, thereby greatly reducing a stabilizing time necessary for stabilizing an APC output voltage at an initial stage in a write or read mode. Therefore, the loss of data in a high speed write or read mode can be reduced. Particularly, the loss of data in a high speed write mode can be greatly reduced.

摘要翻译： 提供了一种自动功率控制（APC）装置，其减少在盘驱动器的自动功率控制的初始阶段稳定APC电路所需的时间。 APC电路被设计成使得预期输出电压的预定百分比的电压预先添加到激光二极管的APC电路的APC输出电压，从而大大减少了稳定APC输出电压所需的稳定时间 在写入或读取模式下的初始阶段。 因此，可以降低高速写入或读取模式下的数据丢失。 特别地，可以大大降低高速写入模式中的数据丢失。

公开(公告)号：US20060181984A1

公开(公告)日：2006-08-17

申请号：US11399645

申请日：2006-04-07

申请人： Jin-gyo Seo ,  Kyoung-bok Jin

发明人： Jin-gyo Seo ,  Kyoung-bok Jin

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： H01S5/06808 ,  G11B7/1263 ,  H01S5/0683

摘要： A pickup of an optical reproducing/recording apparatus having a laser diode generating an optical signal with a current power value, and a laser diode power control device automatically controlling an output of the laser diode. The laser diode power control device has a sampler sampling the current power value of the optical signal from the laser diode, an operation unit outputting a target output value based on a comparison of the sampled current power value and a basic power value depending on a type of medium that is to receive the output of the laser diode, and a controller controlling the output of the laser diode based on the target output value.

公开(公告)号：US07564755B2

公开(公告)日：2009-07-21

申请号：US11399645

申请日：2006-04-07

申请人： Jin-gyo Seo ,  Kyoung-bok Jin

发明人： Jin-gyo Seo ,  Kyoung-bok Jin

IPC分类号： G11B11/00

CPC分类号： H01S5/06808 ,  G11B7/1263 ,  H01S5/0683

摘要： A pickup of an optical reproducing/recording apparatus having a laser diode generating an optical signal with a current power value, and a laser diode power control device automatically controlling an output of the laser diode. The laser diode power control device has a sampler sampling the current power value of the optical signal from the laser diode, an operation unit outputting a target output value based on a comparison of the sampled current power value and a basic power value depending on a type of medium that is to receive the output of the laser diode, and a controller controlling the output of the laser diode based on the target output value.

摘要翻译： 具有产生具有当前功率值的光信号的激光二极管的光学重放/记录装置的拾取器和激光二极管功率控制装置自动控制激光二极管的输出。 激光二极管功率控制装置具有对来自激光二极管的光信号的当前功率值进行采样的采样器，基于采样的当前功率值和取决于类型的基本功率值的比较来输出目标输出值的操作单元 的接收激光二极管的输出的介质，以及控制器，其基于目标输出值控制激光二极管的输出。

公开(公告)号：US07072262B2

公开(公告)日：2006-07-04

申请号：US09991632

申请日：2001-11-26

申请人： Jin-gyo Seo ,  Kyoung-bok Jin

发明人： Jin-gyo Seo ,  Kyoung-bok Jin

IPC分类号： G11B11/03

CPC分类号： H01S5/06808 ,  G11B7/1263 ,  H01S5/0683

摘要： A method and an apparatus that automatically controls the optimum output of a laser diode. The apparatus automatically controls the output of a laser diode based on the results of a comparison between the current power value of an optical signal output from a laser diode and a basic power value. The apparatus includes: a sampler to sample the current power value output from the laser diode; a register unit to store the output of the sampler; a basic register unit to store a basic value; an operation unit to output a target output value applied to the laser diode based on the current power value and the basic power value stored in the register unit and the basic register unit; and a pulse generator to generate a control signal that controls the storing timing of the register unit based on recording data to be recorded by the laser diode. The apparatus can be effectively adapted to an optical recording/regenerating apparatus of high speed and high capacity, and can be attributed to the performance improvement and downsizing of the optical recording/reproducing apparatus.