公开(公告)号：US06906986B2

公开(公告)日：2005-06-14

申请号：US10230373

申请日：2002-08-29

申请人： Moon-noh Lee ,  Won Kim ,  Sung-ro Go ,  Dong-jin Lee ,  Hyun-seok Yang ,  Hong-gul Jun

发明人： Moon-noh Lee ,  Won Kim ,  Sung-ro Go ,  Dong-jin Lee ,  Hyun-seok Yang ,  Hong-gul Jun

IPC分类号： G11B7/09 ,  G01H1/00 ,  G11B7/00 ,  G11B7/095 ,  G11B19/02 ,  G11B20/18

CPC分类号： G11B7/0946 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0948 ,  G11B7/0953

摘要： A vibration quantity measuring apparatus and method, and a loop design method in which a vibration quantity generated in a focus and tracking loop is accurately measured to optimally design a focus and tracking loop of an optical disc drive. The vibration quantity measuring apparatus includes an error gain adjusting unit which adjusts an amplitude of a focus and tracking error which occurs where a disc rotates, so as to maintain the amplitude of the focus and tracking error constant, a loop gain adjusting unit which compares a closed loop phase of a focus and tracking loop and a predetermined reference closed loop phase, and maintains a constant gain of the focus and tracking loop to compensate for a gain difference of an actuator, and a measuring unit which calculates and outputs a vibration quantity using an error adjusted by the error gain adjusting unit and the loop gain adjusting unit, and an output of a controller which controls a focus and tracking of the disc. According to the methods and apparatus, a focus and tracking vibration quantity that occur differently depending on the type of a disc, on which data is recorded on or read from, or depending on a speed factor of a disc drive, can be measured.

摘要翻译： 振动量测量装置和方法以及循环设计方法，其中精确地测量在聚焦和跟踪环路中产生的振动量，以最佳地设计光盘驱动器的聚焦和跟踪环路。 振动量测量装置包括：误差增益调整单元，其调整盘旋转时发生的聚焦和跟踪误差的幅度，以保持聚焦和跟踪误差的幅度恒定;环路增益调整单元， 聚焦跟踪环和预定的参考闭环相位的闭环相位，并且保持焦距和跟踪环路的恒定增益以补偿致动器的增益差;以及测量单元，其计算并输出使用 由误差增益调整单元和环路增益调整单元调整的误差以及控制盘的聚焦和跟踪的控制器的输出。 根据方法和装置，可以测量根据盘的类型而不同地产生的聚焦和跟踪振动量，其中数据被记录在其上或从其读取或取决于盘驱动器的速度因子。

公开(公告)号：US07116607B2

公开(公告)日：2006-10-03

申请号：US10232826

申请日：2002-09-03

申请人： Moon-noh Lee ,  Won Kim ,  Gwang-ho Lee ,  Sung-ro Go ,  Hong-rok Kim ,  Il-hong Suh ,  Wan-kyun Chung ,  Young-jin Choi

发明人： Moon-noh Lee ,  Won Kim ,  Gwang-ho Lee ,  Sung-ro Go ,  Hong-rok Kim ,  Il-hong Suh ,  Wan-kyun Chung ,  Young-jin Choi

IPC分类号： G11B21/08

CPC分类号： G11B7/08505 ,  G11B7/0953

摘要： An apparatus to remove periodic disturbances in a recording medium having large eccentricity and deflection mass includes an actuator to change a position of a pickup in response to a combination of first and second compensation signals, an error detector to detect an error between positions actuator and the recording medium, a first compensator to receive the detected error and to output the first compensation signal that the actuator uses to actuate the pickup along the recording medium in upper and lower directions, and right and left directions; and a second compensator to output the second compensation signal from which the disturbance has been removed, to combine the compensated error and previous first and second compensation signals, and to filter the combined result at a predetermined bandwidth.

摘要翻译： 一种用于去除具有大的偏心和偏转质量的记录介质中的周期性干扰的装置包括响应于第一和第二补偿信号的组合来改变拾取器的位置的致动器，用于检测位置致动器和位置致动器之间的误差的误差检测器 记录介质，第一补偿器，用于接收检测到的误差并输出致动器用于沿上下方向和左右方向沿记录介质致动拾取器的第一补偿信号; 以及第二补偿器，用于输出从其去除了干扰的第二补偿信号，以将补偿的误差与先前的第一和第二补偿信号组合，并且以预定带宽对组合结果进行滤波。

公开(公告)号：US07420906B2

公开(公告)日：2008-09-02

申请号：US10652491

申请日：2003-09-02

申请人： Sung-un Yang ,  Sung-ro Go

发明人： Sung-un Yang ,  Sung-ro Go

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

摘要： An automatic power calibration apparatus for optical recording devices and a method therefore. The power calibration apparatus includes an optical emission unit, an optical emission unit driving unit which outputs a signal for driving the optical emission unit in response to two or more first channel signal values and/or two or more second channel signal values, an optical detection unit which detects two or more first output signal values and two or more second output signal values corresponding respectively to the first and second channel signals, a memory, a central processing unit which receives the first and second output signal values from the optical detection unit; and an automatic power control unit which adjusts the first channel signal value to maintain the first output signal value to be equivalent to a first reference signal, according to the first reference signal, which is a reference signal of the first channel signal input from the central processing unit, and the first output signal input from the optical detection unit, and outputting the adjusted first channel signal value to the optical emission unit driving unit. Use of the power calibration apparatus enables cost reduction, improvement in productivity, and upgrading of recording quality.

摘要翻译： 一种用于光学记录装置的自动功率校准装置及其方法。 功率校准装置包括光发射单元，光发射单元驱动单元，其响应于两个或更多个第一信道信号值和/或两个或更多个第二信道信号值输出用于驱动光发射单元的信号，光学检测 单元，其检测分别对应于第一和第二信道信号的两个或更多个第一输出信号值和两个或更多个第二输出信号值;存储器，中央处理单元，其从光学检测单元接收第一和第二输出信号值; 以及自动功率控制单元，其根据作为从中央输入的第一信道信号的参考信号的第一参考信号调整第一信道信号值以保持第一输出信号值等于第一参考信号 处理单元和从光学检测单元输入的第一输出信号，并将调整的第一通道信号值输出到光发射单元驱动单元。 使用功率校准装置能够降低成本，提高生产率和提高记录质量。

公开(公告)号：US5856960A

公开(公告)日：1999-01-05

申请号：US856816

申请日：1997-05-15

申请人： Min Hwangbo ,  Byeong-ho Park ,  Sung-ro Go

发明人： Min Hwangbo ,  Byeong-ho Park ,  Sung-ro Go

IPC分类号： G11B7/085 ,  G11B7/08 ,  G11B7/09 ,  G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/094 ,  G11B7/0941

摘要： A servo controlling apparatus of an optical disk drive and a control method thereof are provided for achieving precise control by automatically controlling the gain of error signals caused by the difference in the amount of light irradiated during recording and reproducing, and then using the automatically gain-controlled signal. In a first control step, a focus error signal and a tracking error signal generated from a photodetecting portion via an operator are multiplied by a predetermined value in different multipliers, and then each obtained value is divided by an RF sum signal to control the value of error to within a predetermined target value. In a second control step, each multiplied focus error signal and tracking error signal are divided by a DC signal corresponding to the average level of the RF sum signal when the error value reaches the target value.

摘要翻译： 提供了一种光盘驱动器的伺服控制装置及其控制方法，用于通过自动控制在记录和再现期间照射的光量的差引起的误差信号的增益，从而实现精确的控制，然后使用自动增益 - 受控信号。 在第一控制步骤中，通过操作者从光电检测部分产生的聚焦误差信号和跟踪误差信号在不同乘法器中乘以预定值，然后将每个获得的值除以RF和信号，以控制 误差在预定目标值内。 在第二控制步骤中，当误差值达到目标值时，每个相乘的聚焦误差信号和跟踪误差信号被除以对应于RF和信号的平均电平的DC信号。

公开(公告)号：US07110340B2

公开(公告)日：2006-09-19

申请号：US10349187

申请日：2003-01-23

申请人： Jin-gyo Seo ,  Sung-ro Go

发明人： Jin-gyo Seo ,  Sung-ro Go

IPC分类号： G11B7/125

CPC分类号： G11B7/00456 ,  G11B7/0062

摘要： An optical recording apparatus and method thereof form a mark and a space by radiating a laser signal corresponding to a recording pulse having a peak level and a bias level onto an optical recording medium. The optical recording apparatus includes a recording pulse generator to generate the recording pulse by overlapping a fine adjustment pulse with an amplitude less than the peak level and the bias level, and a laser diode to generate the laser signal according to the recording pulse.

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：US20090268570A1

公开(公告)日：2009-10-29

申请号：US12453314

申请日：2009-05-06

申请人： Sung-ro Go ,  Seung-un Yang

发明人： Sung-ro Go ,  Seung-un Yang

IPC分类号： G11B19/00

CPC分类号： G11B7/0045 ,  G11B7/0053 ,  G11B19/04 ,  G11B19/26 ,  G11B20/18

摘要： An apparatus for changing a recording speed of an optical recording medium by analyzing wobble signals in real time during a recording operation, includes a signal process unit which outputs a cyclic redundancy check (CRC) signal that checks for a generation of errors on the optical recording medium from absolute time in pregroove (ATIP) information output from the optical recording medium during the recording operation, and a speed control unit which changes the recording speed during the recording operation according to a comparison of the CRC signal output from the signal process unit with a reference value. In the apparatus, the recording speed is limited or lowered in response to a signal quality of a recording section being less than an acceptable level during the recording operation. Accordingly, buffer under run and defects of read-in start position and seek fail, which are generated during a ZCLV operation, are prevented. In addition, the apparatus detects errors in characteristics of wobble signals from low quality media, and changes the recording speed to improve the recording quality and readability of such discs after the recording operation.

摘要翻译： 一种用于通过在记录操作期间实时分析摆动信号来改变光学记录介质的记录速度的装置，包括输出循环冗余校验（CRC）信号的信号处理单元，该信号处理单元检查光学记录上的错误的产生 在记录操作期间从光记录介质输出的预制槽（ATIP）信息中的绝对时间的介质;以及速度控制单元，其根据从信号处理单元输出的CRC信号的比较改变记录操作期间的记录速度， 参考值。 在该装置中，记录速度在记录操作期间响应于记录部分的信号质量小于可接受的水平而被限制或降低。 因此，防止在ZCLV操作期间产生的运行中的缓冲器和读入开始位置和寻找失败的缺陷。 此外，该装置检测来自低质量介质的摆动信号的特性的错误，并且改变记录速度以提高记录操作之后的这种盘的记录质量和可读性。

公开(公告)号：US06977982B2

公开(公告)日：2005-12-20

申请号：US09986978

申请日：2001-11-13

申请人： Byung-in Ma ,  In-sik Park ,  Joong-eon Seo ,  Sung-ro Go ,  Soo-yul Jung ,  Chang-jin Yang

发明人： Byung-in Ma ,  In-sik Park ,  Joong-eon Seo ,  Sung-ro Go ,  Soo-yul Jung ,  Chang-jin Yang

IPC分类号： G11B7/08 ,  G11B7/09 ,  H04L7/00 ,  G11B7/00

CPC分类号： G11B7/0906 ,  G11B7/094

摘要： A differential phase detection device receives first through fourth detection signals from a photodetector and detects a differential phase signal therefrom, the differential phase detection device includes a slicer slicing and digitizing each of the detection signals with respect to a reference level. A synthesizer synthesizes the digitized detection signals and generates therefrom synthesis signals. A phase difference detector compares phases of the synthesis signals and outputs a first phase difference signal and a second phase difference signal. A matrix circuit processes the first and second phase difference signals to output the differential phase signal.

摘要翻译： 差分相位检测装置从光电检测器接收第一至第四检测信号，并从其检测差分相位信号，差分相位检测装置包括切片器，对每个检测信号相对于基准电平进行数字化。 合成器合成数字化的检测信号并从中产生合成信号。 相位差检测器对合成信号的相位进行比较，并输出第一相位差信号和第二相位差信号。 矩阵电路处理第一和第二相位差信号以输出差分相位信号。

公开(公告)号：US20050041562A1

公开(公告)日：2005-02-24

申请号：US10859290

申请日：2004-06-03

申请人： Sung-un Yang ,  Sung-ro Go

发明人： Sung-un Yang ,  Sung-ro Go

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/125

CPC分类号： G11B7/1263 ,  G11B7/00456

摘要： A method of and an apparatus for controlling a power of a light emitter in an optical disc drive to stabilize a servo control operation by efficiently compensating a slow tail effect occurring in a photodiode monitoring outputs of the light emitter are provided. The method includes: detecting an intensity of a laser signal reflected from a recording medium; normalizing the reference value using the detected value; and adjusting the reference value using the normalization result.

摘要翻译： 提供了一种用于控制光盘驱动器中的光发射器的功率以通过有效地补偿在发光器的光电二极管监控输出中发生的慢尾效应来稳定伺服控制操作的方法和装置。 该方法包括：检测从记录介质反射的激光信号的强度; 使用检测值对参考值进行归一化; 并使用归一化结果调整参考值。

公开(公告)号：US07342861B2

公开(公告)日：2008-03-11

申请号：US11449588

申请日：2006-06-09

申请人： Jin-gyo Seo ,  Sung-ro Go

发明人： Jin-gyo Seo ,  Sung-ro Go

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/0062

摘要： An optical recording apparatus and method thereof form a mark and a space by radiating a laser signal corresponding to a recording pulse having a peak level and a bias level onto an optical recording medium. The optical recording apparatus includes a recording pulse generator to generate the recording pulse by overlapping a fine adjustment pulse with an amplitude less than the peak level and the bias level, and a laser diode to generate the laser signal according to the recording pulse.

摘要翻译： 光记录装置及其方法通过将与具有峰值电平和偏置电平的记录脉冲相对应的激光信号发射到光学记录介质上而形成标记和空间。 光记录装置包括记录脉冲发生器，用于通过以小于峰值电平和偏置电平的振幅重叠微调脉冲来产生记录脉冲，以及激光二极管，以根据记录脉冲产生激光信号。