公开(公告)号：US07042827B2

公开(公告)日：2006-05-09

申请号：US10175151

申请日：2002-06-20

申请人： Seong-il Cho ,  Joong-eon Seo ,  Soo-yul Jung

发明人： Seong-il Cho ,  Joong-eon Seo ,  Soo-yul Jung

IPC分类号： G11B7/00

CPC分类号： G11B7/0953 ,  G11B7/08541 ,  G11B7/0945

摘要： A disk drive servo system for eccentricity compensation and a method thereof includes an error detector detecting a position error between an actual position and a predetermined nominal reference position of a turntable actuator, a feedback unit generating and outputting a first control value to compensate for the position error received from the error detector, a learning controller calculating, storing, and outputting a second control value to compensate for eccentricity at one or more predetermined speeds of the disk drive, and a gain/phase adjustor providing gain and phase compensation information corresponding to the second control value of the learning controller according to frequency response characteristics of the turntable actuator at the one or more predetermined speeds. Accordingly, the eccentricity of the turntable actuator can be effectively compensated, thereby improving a lead-in performance, a tracking performance, and a high-speed seeking performance of the disk drive servo system with respect to the disk eccentricity.

公开(公告)号：US06813227B2

公开(公告)日：2004-11-02

申请号：US09938304

申请日：2001-08-24

申请人： Seong-il Cho ,  Joong-eon Seo ,  Jin-hoon Jeon ,  Soo-yul Jung

发明人： Seong-il Cho ,  Joong-eon Seo ,  Jin-hoon Jeon ,  Soo-yul Jung

IPC分类号： G11B700

CPC分类号： G11B7/0953

摘要： A disturbance compensation module using learning control generates a control input to compensate for track position errors due to a periodic disturbance occurring in an optical recording medium in an optical recording medium drive servo system of an optical recording/reproducing apparatus. The module includes a first filter to filter the track position errors and a memory to store control inputs to compensate for a track control cycle in a corresponding address. A second filter filters the control inputs stored in the memory. An adder adds the filtered track position errors from the first filter to the filtered control inputs from the second filter and outputs a result to the memory, updating the control inputs to compensate for the track position errors.

摘要翻译： 使用学习控制的扰动补偿模块生成控制输入，以补偿光记录/再现装置的光记录介质驱动伺服系统中的光记录介质中发生的周期性干扰的轨道位置误差。 该模块包括用于滤波轨道位置误差的第一滤波器和用于存储控制输入以补偿相应地址中的轨道控制周期的存储器。 第二个滤波器过滤存储在存储器中的控制输入。 加法器将来自第一滤波器的经滤波的轨道位置误差与来自第二滤波器的经滤波的控制输入相加，并将结果输出到存储器，更新控制输入以补偿轨道位置误差。

公开(公告)号：US07079461B2

公开(公告)日：2006-07-18

申请号：US10028979

申请日：2001-12-28

申请人： Seong-il Cho ,  Joong-eon Seo ,  Soo-yul Jung

发明人： Seong-il Cho ,  Joong-eon Seo ,  Soo-yul Jung

IPC分类号： G11B7/095

CPC分类号： G11B21/106 ,  G11B5/59627 ,  G11B7/0941 ,  G11B7/0953

摘要： An eccentricity compensating apparatus of a disk drive servo system using frequency response characteristics of an actuator actuating a head to a position on a disk to read data on or reproduce data from the disk. The apparatus includes an error detector that detects a position error between a reference head position and an actual position of the head on the disk and a first compensation controller that receives the position error from the error detector and changes the actual position of the head to compensate for the position error. The apparatus also includes a second compensation controller that generates and outputs a control value to compensate for eccentricity which varies depending on a phase of a spindle that rotates the disk, and a gain/phase adjuster that adjusts gain and phase of the control value output from the second compensation controller according to a disk reproduction speed, wherein a drive signal of the actuator is obtained by summing together signals output from the first compensation controller and the gain/phase adjuster. Thus, the eccentricity compensation apparatus compensates for eccentricity at varying reproduction speeds by adjusting control data estimated for eccentricity compensation at specific reproduction speed based on frequency response characteristics of an actuator.

公开(公告)号：US20080260367A1

公开(公告)日：2008-10-23

申请号：US11941287

申请日：2007-11-16

申请人： Dong-hae YEOM ,  Joong-eon SEO ,  Soo-yul Jung ,  Nam-joon Park

发明人： Dong-hae YEOM ,  Joong-eon SEO ,  Soo-yul Jung ,  Nam-joon Park

IPC分类号： G03B17/00

CPC分类号： G03B5/00 ,  G03B2205/0007 ,  G03B2205/0069 ,  G03B2217/005 ,  H04N5/23248 ,  H04N5/23258

摘要： An auto stabilization method and a photographing apparatus using the same are provided. The photographing apparatus having the auto stabilization function includes a voice coil motor actuator (VCMA) to move a photographing element. In the generation of hand tremor, the photographing apparatus controls compensating of the hand tremor. Because one or more dynamic characteristics according to a structure of the VCMA is considered, saturation or delay of displacement of the VCMA is avoided, and a clearer image is provided.

摘要翻译： 提供一种自动稳定方法和使用其的摄影装置。 具有自动稳定功能的拍摄装置包括用于移动拍摄元件的音圈电动机致动器（VCMA）。 在手震的产生中，拍摄装置控制手震的补偿。 由于考虑到根据VCMA的结构的一个或多个动态特性，所以避免了VCMA的饱和或位移延迟，并且提供了更清晰的图像。

公开(公告)号：US07369474B2

公开(公告)日：2008-05-06

申请号：US10727980

申请日：2003-12-05

申请人： Byoung-ho Choi ,  Yong-seock Yoon ,  Dong-jin Lee ,  Soo-yul Jung ,  Joong-eon Seo

发明人： Byoung-ho Choi ,  Yong-seock Yoon ,  Dong-jin Lee ,  Soo-yul Jung ,  Joong-eon Seo

IPC分类号： G11B7/00

CPC分类号： G11B19/125

摘要： A plurality of types of writable discs on which wobbles having a predetermined frequency containing absolute addresses and/or various pieces of information on the writable discs can be discriminated by controlling only focusing and using an amplitude of a wobble signal or a wobble PLL lock signal that has passed through a phase locked loop. Accordingly, a discrimination time can be reduced and a disc in an unrecorded state can also be discriminated.

摘要翻译： 可以通过仅控制聚焦和使用摆动信号或摆动PLL锁定信号的振幅来鉴别其上具有包含绝对地址和/或可写盘上的各种信息的预定频率的摆动的多种类型的可写盘， 已经通过了锁相环。 因此，可以降低识别时间，并且还可以区分未记录状态的盘。

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：US07385895B2

公开(公告)日：2008-06-10

申请号：US10859471

申请日：2004-06-03

申请人： Yong-seock Yoon ,  Byoung-ho Choi ,  Soo-yul Jung ,  Joong-Eon Seo ,  Dong-jin Lee

发明人： Yong-seock Yoon ,  Byoung-ho Choi ,  Soo-yul Jung ,  Joong-Eon Seo ,  Dong-jin Lee

IPC分类号： G11B27/36 ,  G11B7/00

CPC分类号： G11B19/12

摘要： A method of discriminating an optical disc type and an apparatus thereof. The method for an optical disc system of recording and/or reproducing an optical disc that includes an optical pickup having a laser diode, an object lens, and a light receiving device, checks a track error signal while moving the object lens to upward/downward, and discriminates an optical disc type by using the magnitude of the checked track error signal. The method and apparatus discriminate the disc type in the initial stage of focusing where the object lens moves to upward/downward.

摘要翻译： 鉴别光盘类型的方法及其装置。 用于记录和/或再现光盘的光盘系统的方法包括具有激光二极管，物镜和光接收装置的光学拾取器，在将物镜向上/向下移动的同时检查轨道误差信号 并且通过使用所检查的轨道误差信号的幅度来鉴别光盘类型。 该方法和装置在物镜向上/向下移动的聚焦的初始阶段中区分光盘类型。

公开(公告)号：US08368765B2

公开(公告)日：2013-02-05

申请号：US11941287

申请日：2007-11-16

申请人： Dong-hae Yeom ,  Joong-eon Seo ,  Soo-yul Jung ,  Nam-joon Park

发明人： Dong-hae Yeom ,  Joong-eon Seo ,  Soo-yul Jung ,  Nam-joon Park

IPC分类号： H04N5/228

CPC分类号： G03B5/00 ,  G03B2205/0007 ,  G03B2205/0069 ,  G03B2217/005 ,  H04N5/23248 ,  H04N5/23258

摘要： An auto stabilization method and a photographing apparatus using the same are provided. The photographing apparatus having the auto stabilization function includes a voice coil motor actuator (VCMA) to move a photographing element. In the generation of hand tremor, the photographing apparatus controls compensating of the hand tremor. Because one or more dynamic characteristics according to a structure of the VCMA is considered, saturation or delay of displacement of the VCMA is avoided, and a clearer image is provided.

摘要翻译： 提供一种自动稳定方法和使用其的摄影装置。 具有自动稳定功能的拍摄装置包括用于移动拍摄元件的音圈电动机致动器（VCMA）。 在手震的产生中，拍摄装置控制手震的补偿。 由于考虑到根据VCMA的结构的一个或多个动态特性，所以避免了VCMA的饱和或位移延迟，并且提供了更清晰的图像。

公开(公告)号：US07324418B2

公开(公告)日：2008-01-29

申请号：US10885896

申请日：2004-07-08

申请人： Byoung-ho Choi ,  Yong-seock Yoon ,  Soo-yul Jung ,  Joong-Eon Seo

发明人： Byoung-ho Choi ,  Yong-seock Yoon ,  Soo-yul Jung ,  Joong-Eon Seo

IPC分类号： G11B7/00

CPC分类号： G11B19/128

摘要： A method of determining a type of a disc for a disc system to record/reproduce a plurality of recordable discs having different track pitches, including detecting a plurality of signals for determination while moving an objective lens up or down and simultaneously making the objective lens vibrate in a radial direction of the disc, and determining the types of the discs having different track pitches by using the detected signals for determination.

摘要翻译： 一种确定用于盘系统的盘的类型的方法，用于记录/再现具有不同轨道间距的多个可记录盘，包括在向上或向下移动物镜时检测多个用于确定的信号，同时使物镜振动 在盘的径向方向上，并且通过使用检测到的信号来确定具有不同轨道间距的盘的类型。

公开(公告)号：US20050052978A1

公开(公告)日：2005-03-10

申请号：US10859471

申请日：2004-06-03

申请人： Yong-seock Yoon ,  Byoung-ho Choi ,  Soo-yul Jung ,  Joong-Eon Seo ,  Dong-Jin Lee

发明人： Yong-seock Yoon ,  Byoung-ho Choi ,  Soo-yul Jung ,  Joong-Eon Seo ,  Dong-Jin Lee

IPC分类号： G11B7/004 ,  G11B7/085 ,  G11B19/12 ,  G11B7/00 ,  G11B5/58

CPC分类号： G11B19/12

摘要： A method of discriminating an optical disc type and an apparatus thereof. The method for an optical disc system of recording and/or reproducing an optical disc that includes an optical pickup having a laser diode, an object lens, and a light receiving device, checks a track error signal while moving the object lens to upward/downward, and discriminates an optical disc type by using the magnitude of the checked track error signal. The method and apparatus discriminate the disc type in the initial stage of focusing where the object lens moves to upward/downward.

摘要翻译： 鉴别光盘类型的方法及其装置。 用于记录和/或再现光盘的光盘系统的方法包括具有激光二极管，物镜和光接收装置的光学拾取器，在将物镜向上/向下移动的同时检查轨道误差信号 并且通过使用所检查的轨道误差信号的幅度来鉴别光盘类型。 该方法和装置在物镜向上/向下移动的聚焦的初始阶段中区分光盘类型。