公开(公告)号：US08009533B2

公开(公告)日：2011-08-30

申请号：US11703733

申请日：2007-02-08

申请人： Ji Seon Baek ,  Jin Woo Yu ,  Hyon Sok Kay

发明人： Ji Seon Baek ,  Jin Woo Yu ,  Hyon Sok Kay

IPC分类号： G11B15/52

CPC分类号： G11B7/1267 ,  G11B7/00736

摘要： An optical disc apparatus and a method of performing an optical power study and detecting writing power in the optical disc apparatus. An optical pickup includes a light source to emit a laser beam according to an input optical power signal, an optical power detector to detect optical power of the laser beam using part of the laser beam, and an actuator to drive a lens to form a beam spot. To reduce the time required for the power study, a controller positions the optical pickup in a specific area of a disc and applies a predetermined range of optical power signals to the light source to perform the power study to determine its optical power characteristics using the optical power signal and the detected optical power while maintaining the actuator in a driving state in which writing and reading is possible.

摘要翻译： 一种在光盘装置中执行光功率研究和检测写入功率的光盘装置和方法。 光拾取器包括根据输入光功率信号发射激光束的光源，使用部分激光束检测激光束的光功率的光功率检测器，以及用于驱动透镜以形成光束的致动器 点。 为了减少功率研究所需的时间，控制器将光学拾取器定位在盘的特定区域中，并且向光源施加预定范围的光功率信号以执行功率研究以使用光学器件确定其光功率特性 功率信号和检测到的光功率，同时将致动器保持在可以进行写入和读取的驱动状态。

公开(公告)号：US20070283371A1

公开(公告)日：2007-12-06

申请号：US11703733

申请日：2007-02-08

申请人： Ji Seon Baek ,  Jin Woo Yu ,  Hyon Sok Kay

发明人： Ji Seon Baek ,  Jin Woo Yu ,  Hyon Sok Kay

IPC分类号： G11B7/085

CPC分类号： G11B7/1267 ,  G11B7/00736

摘要： An optical disc apparatus and a method of performing an optical power study and detecting writing power in the optical disc apparatus. An optical pickup includes a light source to emit a laser beam according to an input optical power signal, an optical power detector to detect optical power of the laser beam using part of the laser beam, and an actuator to drive a lens to form a beam spot. To reduce the time required for the power study, a controller positions the optical pickup in a specific area of a disc and applies a predetermined range of optical power signals to the light source to perform the power study to determine its optical power characteristics using the optical power signal and the detected optical power while maintaining the actuator in a driving state in which writing and reading is possible.

摘要翻译： 一种在光盘装置中执行光功率研究和检测写入功率的光盘装置和方法。 光拾取器包括根据输入光功率信号发射激光束的光源，使用部分激光束检测激光束的光功率的光功率检测器，以及用于驱动透镜以形成光束的致动器 点。 为了减少功率研究所需的时间，控制器将光学拾取器定位在盘的特定区域中，并且向光源施加预定范围的光功率信号以执行功率研究以使用光学器件确定其光功率特性 功率信号和检测到的光功率，同时将致动器保持在可以进行写入和读取的驱动状态。

公开(公告)号：US20070263507A1

公开(公告)日：2007-11-15

申请号：US11706954

申请日：2007-02-16

申请人： Ji Seon Baek ,  Otsuka Tatsuhiro ,  Jin Woo Yu ,  Young Jae Park

发明人： Ji Seon Baek ,  Otsuka Tatsuhiro ,  Jin Woo Yu ,  Young Jae Park

IPC分类号： G11B5/00

CPC分类号： G11B7/1267

摘要： An optical disc apparatus and a method of determining an optimal writing power are provided to reduce the time required for Optimum Power Calibration (OPC) and reduce the difference between OPC results. The optical disc apparatus includes a light source which emits a laser beam to write/read data to/from an optical disc; a reader which receives a laser beam reflected from the optical disc and reads data written on the optical disc; and a controller which, to reduce the difference between OPC results, controls the light source to write test data more than once for determining an optimal writing power, controls the reader to read the test data, measures read quality of the test data, and detects an optimal writing power based on the measured read quality.

摘要翻译： 提供了一种确定最佳写入功率的光盘装置和方法，以减少最佳功率校准（OPC）所需的时间并减少OPC结果之间的差异。 光盘装置包括发射激光束以从光盘写入/读取数据的光源; 接收从光盘反射的激光束并读取写在光盘上的数据的读取器; 以及控制器，为了减少OPC结果的差异，控制光源多次写入测试数据以确定最佳写入功率，控制读取器读取测试数据，测量测试数据的读取质量并检测 基于测量的读取质量的最佳写入功率。

公开(公告)号：US07830763B2

公开(公告)日：2010-11-09

申请号：US11362714

申请日：2006-02-28

申请人： Ji Seon Baek ,  Jin Woo Yu ,  Otsuka Tatsuhiro

发明人： Ji Seon Baek ,  Jin Woo Yu ,  Otsuka Tatsuhiro

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00736

摘要： An optical disc apparatus is provided with optimum power control (OPC) to determine an optimum laser power needed for recording data on an optical disc. Such an apparatus comprises a controller to determine optimum writing power in such a way of re-establishing a new test zone when an erasing error is detected on an initially established test zone in order to perform the OPC. When the erasing error is detected on a test zone of an OPC zone, a new test zone is re-established, so that OPC is performed rapidly while reducing an error frequency occurring when optimum writing power is not determined.

摘要翻译： 光盘装置具有最佳功率控制（OPC）以确定在光盘上记录数据所需的最佳激光功率。 这样的装置包括一个控制器，以便在最初建立的测试区域上检测到擦除错误以便执行OPC时，以这种重新建立新的测试区域的方式确定最佳写入功率。 当在OPC区域的测试区域上检测到擦除错误时，将重新建立新的测试区域，以便快速执行OPC，同时减少最佳写入功率未确定时发生的错误频率。

公开(公告)号：US20070195666A1

公开(公告)日：2007-08-23

申请号：US11643996

申请日：2006-12-22

申请人： Jong Jin Ko ,  Ji Seon Baek ,  Jin Woo Yu

发明人： Jong Jin Ko ,  Ji Seon Baek ,  Jin Woo Yu

IPC分类号： G11B19/00

CPC分类号： G11B7/1267

摘要： A method to determine an optimal erase power in an optical disc apparatus detects optimal erase power in an erasing operation before performing an optimum power calibration (OPC) for detecting optimal recording power of an optical disc, and includes: acquiring a power-to-modulation curve, in which applied power is changed to adjust an amount of light which is incident on the optical disc; calculating an amount of change of modulation according to the change of the power in the power-to-modulation curve; and setting the optimal erase power using the calculated change amount of the modulation. Therefore, a part to have the OPC performed is erased by the optimal erase power and then the OPC is performed such that an OPC performance result having a relatively high reliability can be obtained.

摘要翻译： 一种在光盘装置中确定最佳擦除功率的方法在执行用于检测光盘的最佳记录功率的最佳功率校准（OPC）之前，在擦除操作中检测最佳擦除功率，并且包括：获取功率到调制 曲线，其中施加的功率被改变以调节入射在光盘上的光量; 根据功率调制曲线中的功率的变化计算调制变化量; 并使用所计算的调制变化量来设定最佳擦除功率。 因此，通过最佳擦除功率擦除执行OPC的部分，然后执行OPC，从而可以获得具有较高可靠性的OPC性能结果。

公开(公告)号：US20070195679A1

公开(公告)日：2007-08-23

申请号：US11657087

申请日：2007-01-24

申请人： Ji Seon Baek ,  Otsuka Tatsuhiro ,  Kyung Geun Lee

发明人： Ji Seon Baek ,  Otsuka Tatsuhiro ,  Kyung Geun Lee

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  H01S5/0683

摘要： An optical disc apparatus and a method for performing optical power study thereof can prevent errors for a power study result, which may be generated in a condition that the output power of a laser diode (LD) is saturated at a high temperature, in which the power study detects output characteristics of the LD. The optical disc apparatus includes a laser output device which outputs a laser beam in response to a light output control signal, a sensor which detects some of the outputted laser beam to output a signal corresponding to the outputted laser beam, and a controller which applies the light output control signal of a certain range to the laser output device and which calculates characteristics of the laser output power which is outputted from the laser output device in response to the light output control signal, based on the output signals of the sensor, which correspond to the light output control signal, and whether the laser output device is in a saturated state. Therefore, the optical disc apparatus can prevent errors of the result of the power study procedure generated due to power saturation of the LD at a relatively high temperature, and can correctly obtain the result of the power study procedure at a relatively low temperature.

摘要翻译： 用于进行光功率研究的光盘装置和方法可以防止在激光二极管（LD）的输出功率在高温下饱和的条件下产生的功率研究结果的误差，其中 电力研究检测LD的输出特性。 光盘装置包括：响应于光输出控制信号输出激光束的激光输出装置;检测输出的激光束的一部分输出与输出的激光束对应的信号的传感器;以及控制器， 基于传感器的输出信号，对激光输出装置输出一定范围的光输出控制信号，并根据传感器的输出信号计算从激光输出装置输出的激光输出功率的特性 到光输出控制信号，以及激光输出装置是否处于饱和状态。 因此，光盘装置可以防止在相对较高的温度下由于LD的功率饱和而产生的功率研究过程的结果的误差，并且可以在相对较低的温度下正确地获得功率研究程序的结果。

公开(公告)号：US07948847B2

公开(公告)日：2011-05-24

申请号：US12029523

申请日：2008-02-12

申请人： Yamasaki Yukihiro ,  Kagimoto Tomohiro ,  Tasaka Shuichi ,  Ji Seon Baek

发明人： Yamasaki Yukihiro ,  Kagimoto Tomohiro ,  Tasaka Shuichi ,  Ji Seon Baek

IPC分类号： G11B7/00

CPC分类号： G11B7/094 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/0908 ,  G11B7/0945 ,  G11B7/1267

摘要： An apparatus and method to write/reproduce data to/from an optical disc, which are capable of preventing an error from occurring at the time of examination of a writing strategy and searching for an optimum writing condition for a short period of time, by examining the writing strategy after adjusting a focus in a test region, in order to set a writing condition at the time of writing data. The apparatus to write/reproduce data to/from an optical disc includes a matrix jitter measuring unit which measures length errors and jitters of edges of a mark and a space of a written data pattern from an RF signal generated at the time of reproduction of the optical disc; and a CPU which extracts at least one of the RF signal, a jitter and an error rate, controls a focus bias, and performs an optimum power calibration (OPC) for searching for optimum power of laser.

摘要翻译： 一种用于向/从光盘写入/再现数据的装置和方法，其能够防止在写入策略检查时发生错误并且在短时间内搜索最佳写入条件，通过检查 在测试区域中调整焦点后的写入策略，以便在写入数据时设置写入条件。 向/从光盘写入/再现数据的装置包括矩阵抖动测量单元，该矩阵抖动测量单元从再现的时间中产生的RF信号测量标记的边缘的长度误差和抖动以及写入的数据模式的空间 光盘; 并且提取RF信号，抖动和错误率中的至少一个的CPU控制聚焦偏置，并且执行用于搜索激光器的最佳功率的最佳功率校准（OPC）。

公开(公告)号：US20080212425A1

公开(公告)日：2008-09-04

申请号：US12029523

申请日：2008-02-12

申请人： Yamasaki YUKIHIRO ,  Kagimoto Tomohiro ,  Tasaka Shuichi ,  Ji Seon Baek

发明人： Yamasaki YUKIHIRO ,  Kagimoto Tomohiro ,  Tasaka Shuichi ,  Ji Seon Baek

IPC分类号： G11B7/125

CPC分类号： G11B7/094 ,  G11B7/00456 ,  G11B7/0062 ,  G11B7/0908 ,  G11B7/0945 ,  G11B7/1267

摘要： An apparatus and method to write/reproduce data to/from an optical disc, which are capable of preventing an error from occurring at the time of examination of a writing strategy and searching for an optimum writing condition for a short period of time, by examining the writing strategy after adjusting a focus in a test region, in order to set a writing condition at the time of writing data. The apparatus to write/reproduce data to/from an optical disc includes a matrix jitter measuring unit which measures length errors and jitters of edges of a mark and a space of a written data pattern from an RF signal generated at the time of reproduction of the optical disc; and a CPU which extracts at least one of the RF signal, a jitter and an error rate, controls a focus bias, and performs an optimum power calibration (OPC) for searching for optimum power of laser.

摘要翻译： 一种用于向/从光盘写入/再现数据的装置和方法，其能够防止在写入策略检查时发生错误并且在短时间内搜索最佳写入条件，通过检查 在测试区域中调整焦点后的写入策略，以便在写入数据时设置写入条件。 向/从光盘写入/再现数据的装置包括矩阵抖动测量单元，该矩阵抖动测量单元从再现的时间中产生的RF信号测量标记的边缘的长度误差和抖动以及写入的数据模式的空间 光盘; 并且提取RF信号，抖动和错误率中的至少一个的CPU控制聚焦偏置，并且执行用于搜索激光器的最佳功率的最佳功率校准（OPC）。