公开(公告)号：US07266055B2

公开(公告)日：2007-09-04

申请号：US10849190

申请日：2004-05-20

申请人： Won-ik Cho ,  Byung-ryul Ryoo ,  Young-pil Park ,  No-cheol Park

发明人： Won-ik Cho ,  Byung-ryul Ryoo ,  Young-pil Park ,  No-cheol Park

IPC分类号： G11B7/00

CPC分类号： G11B7/0933 ,  G11B7/0932 ,  G11B7/0935

摘要： An optical pickup actuator and optical disc drive using the same. The optical pickup actuator includes a blade holding an objective lens and supported on a base by a plurality of suspension wires so that it is elastically movable, a magnetic element positioned on the base, and a coil positioned horizontally on the blade to generate electromagnetic force in a focusing direction and/or a tilting direction through interaction with the magnetic element. The coil is divided into a plurality of subcoils separated vertically from one another.

摘要翻译： 光拾取器致动器和使用其的光盘驱动器。 光学拾取器致动器包括：保持物镜的刀片，并且通过多个悬挂线支撑在基座上，使得其可弹性移动;定位在基座上的磁性元件;以及水平地定位在刀片上的线圈，以产生电磁力 通过与磁性元件相互作用的聚焦方向和/或倾斜方向。 线圈被分成彼此垂直分离的多个子线圈。

公开(公告)号：US20070201323A1

公开(公告)日：2007-08-30

申请号：US11657656

申请日：2007-01-25

申请人： Sang-yol Yoon ,  Dae-jong Jang ,  Young-bin Lee ,  Yong-jae Lee ,  Byung-ryul Ryoo ,  Young-won Lee

发明人： Sang-yol Yoon ,  Dae-jong Jang ,  Young-bin Lee ,  Yong-jae Lee ,  Byung-ryul Ryoo ,  Young-won Lee

IPC分类号： G11B7/00

CPC分类号： G11B7/0935 ,  G11B7/0933 ,  G11B7/0956

摘要： An optical pickup actuator which includes a base, a blade having an objective lens mounted thereon, a plurality of suspensions supporting the blade to be movable with respect to the base and forming an electroconductive path, and a magnetic circuit driving the blade according to a driving signal applied through the respective suspensions. The magnetic circuit includes a magnet fixed to the base, and a fine pattern coil installed on the blade at a position facing the magnet and having a track pattern coil, a focus pattern coil, and a tilt pattern coil independently driven by current applied through the suspensions and providing driving forces in a track direction, a focus direction, and a tilt direction of the blade.

摘要翻译： 一种光学拾取器致动器，包括基座，具有安装在其上的物镜的刀片，支撑刀片以相对于基座可移动并形成导电路径的多个悬架以及根据驾驶驱动刀片的磁路 信号通过相应的悬架施加。 磁路包括固定在基座上的磁体和安装在刀片上的面对磁体的位置的精细图案线圈，并且具有轨道图案线圈，聚焦图案线圈和倾斜图案线圈，独立地由通过 悬架并在叶片的轨道方向，聚焦方向和倾斜方向上提供驱动力。

公开(公告)号：US20060218569A1

公开(公告)日：2006-09-28

申请号：US11385739

申请日：2006-03-22

申请人： Dae-jong Jang ,  Byung-youn Song ,  Young-bin Lee ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Young-won Lee

发明人： Dae-jong Jang ,  Byung-youn Song ,  Young-bin Lee ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Young-won Lee

IPC分类号： G11B7/00

CPC分类号： G11B7/0933 ,  G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

摘要： An optical recording and/or reproducing apparatus with an optical pickup actuator having high thrust. The optical pickup actuator may include a lens holder which holds an objective lens and is movably supported by a supporting unit, and a magnetic driving unit which drives the lens holder in a focusing direction, a tracking direction, and/or a tilting direction. The magnetic driving unit includes a surface-triple pole magnet portion and a coil portion. The surface-triple pole magnet portion has a plurality of polarized, i.e., differently magnetized, areas formed by facing sides of two magnets among three magnets. The coil portion includes tracking coils and tilt coils disposed to interact with the polarized areas of the surface-triple pole magnet portion and a focusing coil disposed to interact with a non-polarized area of the surface-triple pole magnet portion.

摘要翻译： 具有高推力的光学拾音器致动器的光学记录和/或再现装置。 光拾取器致动器可以包括保持物镜并由支撑单元可移动地支撑的透镜保持器，以及在聚焦方向，跟踪方向和/或倾斜方向上驱动透镜保持器的磁性驱动单元。 磁驱动单元包括表面三极磁体部分和线圈部分。 表面三极磁体部分具有由三个磁体中的两个磁体的相对侧面形成的多个极化的，即不同的磁化区域。 线圈部分包括跟踪线圈和设置成与表面三极磁体部分的偏振区域相互作用的倾斜线圈和设置成与表面三极磁铁部分的非偏振区域相互作用的聚焦线圈。

公开(公告)号：US06345031B1

公开(公告)日：2002-02-05

申请号：US08661733

申请日：1996-06-11

申请人： Byung-ryul Ryoo ,  Dae-hwan Kim

发明人： Byung-ryul Ryoo ,  Dae-hwan Kim

IPC分类号： G11B709

CPC分类号： G11B7/0933 ,  G11B7/093 ,  G11B7/0932

摘要： An object-lens driving device for an optical pickup and which employs such a fine pattern coil as is used in a compact disk player or a laser disk player. The object-lens driving device for an optical pickup eliminates the rolling phenomenon caused when a wire having a circular cross-section is used as a supporting member. Focusing and tracking are controlled more stably, since a plurality of plate springs is used for elastically biasing the horizontal or vertical movement of a driving portion body.

摘要翻译： 一种用于光学拾取器的物镜驱动装置，其采用如在光盘播放器或激光盘播放器中使用的精细图案线圈。 用于光学拾取器的物镜驱动装置消除了当使用具有圆形横截面的线作为支撑构件时引起的滚动现象。 由于多个板簧用于弹性偏置驱动部分主体的水平或垂直运动，因此更稳定地控制聚焦和跟踪。

公开(公告)号：US06686697B2

公开(公告)日：2004-02-03

申请号：US10281233

申请日：2002-10-28

申请人： Myoung-cheol Cho ,  Byung-ryul Ryoo ,  Kyung-ui Park ,  Ui-yol Kim ,  Pyong yong Seong

发明人： Myoung-cheol Cho ,  Byung-ryul Ryoo ,  Kyung-ui Park ,  Ui-yol Kim ,  Pyong yong Seong

IPC分类号： H05B4136

CPC分类号： H05B33/089 ,  Y02B20/341

摘要： A circuit protects a light element and prevents a breakdown of a laser diode (LD) when electric static discharge (ESD) occurs. The circuit protects the light element in a drive to control an operation of the light element, which radiates light onto a disc. Here, the drive includes a switch between an active node of the light element and a predetermined potential so that the switch is short-circuited in a normal state, but is open when the drive operates. The light element is protected from static electricity or a surge voltage in a manufacturing process thereof or under a user environment. As a result, the probability that the light element is broken down is remarkably reduced.

摘要翻译： 电路保护光元件并防止当发生静电放电（ESD）时激光二极管（LD）的击穿。 电路保护驱动器中的光元件以控制将光照射到盘上的光元件的操作。 这里，驱动器包括在光元件的主动节点和预定电位之间的开关，使得开关在正常状态下短路，但是当驱动器工作时打开。 光元件在其制造过程中或在用户环境下被保护免受静电或浪涌电压的影响。 结果，光元件分解的概率显着降低。

公开(公告)号：US06584047B1

公开(公告)日：2003-06-24

申请号：US09442460

申请日：1999-11-18

申请人： Seok-jung Kim ,  Byung-ryul Ryoo ,  Yong-ki Son ,  Yong-hoon Lee

发明人： Seok-jung Kim ,  Byung-ryul Ryoo ,  Yong-ki Son ,  Yong-hoon Lee

IPC分类号： G11B700

CPC分类号： G11B7/0935 ,  G11B7/093 ,  G11B7/0933

摘要： A pickup actuator capable of significantly reducing rolling of the area, including: a pickup base, a lens holder having an objective lens mounted thereon, and lens holder driving means for driving the lens holder in directions for focusing and tracking on the pickup base. The lens holder driving means includes at least one magnet, a yoke for concentrating the magnetic flux of the magnet in the direction of the magnetic flux, and a driving coil having a focusing coil and a pair of tracking coils positioned between the magnet and the yoke. The respective widths of the magnet and the yoke are set at a rate of 1:0.8-1.2. Accordingly, the uniform magnetic flux area of the magnetic flux can be widely distributed in the width's direction of the yoke. Further, the magnet is attached to one side of one yoke while being slightly lowered thereon, so that the center of the magnetic flux of the magnet is downwardly moved from its initial position to a distance corresponding to 4-12% of the height of the magnet, and the center line of the magnetic flux of the magnet and the center line of the focusing coil are aligned with each other, exactly. Further, the width of the magnet and the gap between the pair of tracking coils are set at a rate of 1:0.6-0.9. Accordingly, the portions of the pair of tracking coils intersecting the effective magnetic flux area are positioned in the area where the density of the magnetic flux is low, so that the force in the focusing direction by the tracking coils can be reduced.

摘要翻译： 一种能够显着地减少该区域的滚动的拾取致动器，包括：拾取器基座，其上安装有物镜的透镜保持器和用于在拾取器基座上朝向聚焦和跟踪的方向驱动透镜保持器的透镜保持器驱动装置。 透镜保持器驱动装置包括至少一个磁体，用于在磁通方向上集中磁体的磁通的磁轭，以及具有聚焦线圈和位于磁体和磁轭之间的一对跟踪线圈的驱动线圈 。 磁体和磁轭的相应宽度设定为1：0.8-1.2的速率。 因此，磁通的均匀磁通面积可以宽度分布在磁轭的宽度方向上。 此外，磁体被附着在一个磁轭的一侧同时稍微降低，使得磁体的磁通量的中心从其初始位置向下移动到对应于高度的4-12％的距离 磁体，磁铁的磁通量和聚焦线圈的中心线的中心线彼此对准。 此外，磁体的宽度和一对跟踪线圈之间的间隙设定为1:0.6-0.9的比率。 因此，与有效磁通区域相交的一对跟踪线圈的部分位于磁通密度较低的区域，从而可以减小由跟踪线圈聚焦的力。

公开(公告)号：US6167004A

公开(公告)日：2000-12-26

申请号：US433296

申请日：1999-11-03

申请人： Yong-jae Lee ,  Tae-Kyung Kim ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Byung-ryul Ryoo ,  Yong-ki Son ,  Seok-jung Kim

发明人： Yong-jae Lee ,  Tae-Kyung Kim ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Byung-ryul Ryoo ,  Yong-ki Son ,  Seok-jung Kim

IPC分类号： G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G11B7/00

CPC分类号： G11B7/131 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1353

摘要： An error signal detecting apparatus for an optical pickup employing a hologram grating, including a sensing lens for focusing light reflected from a recording medium, a hologram grating having first through fourth pattern regions arranged clockwise in a 2.times.2 matrix arrangement, for diffracting light incident from the sensing lens in different directions, wherein the first through fourth pattern regions a, b, c and d are formed such that a first focus of the +1st-order diffracted beams diffracted by the first and third pattern regions is relatively farther from the sensing lens than a second focus of the +1st-order diffracted beams diffracted by the second and fourth pattern regions, a photodetector disposed between the first and second focuses and having first through fourth light receiving units, for receiving the beams diffracted by the first through fourth pattern regions and independently photoelectrically converting the same, and a signal operation unit for detecting a focus error signal and/or a track error signal from detection signals of the light receiving parts. The error signal detecting apparatus can suppress generation of an offset of a focus error signal due to a change in the wavelength of a light source and an offsets of the focus error signal and track offset signal due to deviations of the photodetector.

摘要翻译： 一种用于采用全息光栅的光学拾取器的误差信号检测装置，包括用于聚焦从记录介质反射的光的感测透镜，具有以2x2矩阵排列顺时针排列的第一至第四图案区域的全息图光栅，用于衍射从 感光透镜，其中第一至第四图案区域a，b，c和d被形成为使得由第一和第三图案区域衍射的+ 1级衍射光束的第一焦点相对较远离感测透镜 比由第二和第四图案区域衍射的+ 1级衍射光束的第二焦点，设置在第一和第二焦点之间并具有第一至第四光接收单元的光电检测器，用于接收由第一至第四图案衍射的光束 区域并独立地对其进行光电转换;以及信号操作单元，用于检测聚焦误差 信号和/或来自光接收部分的检测信号的轨道误差信号。 误差信号检测装置可以抑制由于光源的波长的变化引起的聚焦误差信号的偏移的产生以及由于光电检测器的偏差引起的聚焦误差信号和光道偏移信号的偏移。

公开(公告)号：US07663984B2

公开(公告)日：2010-02-16

申请号：US11657656

申请日：2007-01-25

申请人： Sang-yol Yoon ,  Dae-jong Jang ,  Young-bin Lee ,  Yong-jae Lee ,  Byung-ryul Ryoo ,  Young-won Lee

发明人： Sang-yol Yoon ,  Dae-jong Jang ,  Young-bin Lee ,  Yong-jae Lee ,  Byung-ryul Ryoo ,  Young-won Lee

IPC分类号： G11B7/00

CPC分类号： G11B7/0935 ,  G11B7/0933 ,  G11B7/0956

摘要： An optical pickup actuator which includes a base, a blade having an objective lens mounted thereon, a plurality of suspensions supporting the blade to be movable with respect to the base and forming an electroconductive path, and a magnetic circuit driving the blade according to a driving signal applied through the respective suspensions. The magnetic circuit includes a magnet fixed to the base, and a fine pattern coil installed on the blade at a position facing the magnet and having a track pattern coil, a focus pattern coil, and a tilt pattern coil independently driven by current applied through the suspensions and providing driving forces in a track direction, a focus direction, and a tilt direction of the blade.

摘要翻译： 一种光学拾取器致动器，包括基座，具有安装在其上的物镜的刀片，支撑刀片以相对于基座可移动并形成导电路径的多个悬架以及根据驾驶驱动刀片的磁路 信号通过相应的悬架施加。 磁路包括固定在基座上的磁体和安装在刀片上的面对磁体的位置的精细图案线圈，并且具有轨道图案线圈，聚焦图案线圈和倾斜图案线圈，独立地由通过 悬架并在叶片的轨道方向，聚焦方向和倾斜方向上提供驱动力。

公开(公告)号：US06381207B1

公开(公告)日：2002-04-30

申请号：US09410627

申请日：1999-10-01

申请人： Byung-ryul Ryoo ,  Pyong-yong Seong ,  Seok-jung Kim ,  Yong-ki Son ,  Tae-kyung Kim ,  Yong-jae Lee ,  Jang-hoon Yoo

发明人： Byung-ryul Ryoo ,  Pyong-yong Seong ,  Seok-jung Kim ,  Yong-ki Son ,  Tae-kyung Kim ,  Yong-jae Lee ,  Jang-hoon Yoo

IPC分类号： G11B3302

CPC分类号： G11B7/22

摘要： An optical pickup of an optical disk drive. The optical pickup includes a laser beam source for generating a laser beam; a pickup base having an objective lens for projecting the laser beam generated from the laser beam source to an information recording surface of an optical disk; a variation adjusting plate which is movably disposed on the pickup base to be moved in vertical and lateral directions, and has a rotational hole formed at a central portion thereof; and a rotation adjusting plate including a rotational section having a predetermined curvature which is inserted into the rotational hole of the variation adjusting plate, and with a laser beam source fixed therein, the rotation adjusting plate being rotated with respect to the variation adjusting plate. An optical system including a collimating lens and a reflective mirror is fixed to the pickup base. Since the light path with respect to the field angle and the beam shift is adjusted by moving and/or rotating the light emitting point of the laser beam source with respect to the light axis of the collimating lens, the size of the optical pickup becomes smaller. Further, since the collimating lens and the light source are fixed to the respective structures, the light path is controlled regardless of the focal distance of the collimating lens. Accordingly, if the focal distance of the collimating lens has to be lengthened, the beam shift and the field angle can be precisely adjusted without enlarging the optical pickup.

摘要翻译： 光盘驱动器的光学拾取器。 光学拾取器包括用于产生激光束的激光束源; 具有用于将从激光束源产生的激光束投射到光盘的信息记录表面的物镜的拾取器基座; 可移动地设置在拾取器基座上以在垂直和横向方向上移动的变化调节板，并且具有形成在其中心部分的旋转孔; 以及旋转调节板，其包括插入到变化调节板的旋转孔中的具有预定曲率的旋转部分和固定在其中的激光束源，旋转调节板相对于变化调节板旋转。 包括准直透镜和反射镜的光学系统固定在拾取器基座上。 由于通过相对于准直透镜的光轴移动和/或旋转激光束源的发光点来调节相对于场角和光束偏移的光路，所以光拾取器的尺寸变小 。 此外，由于准直透镜和光源被固定到各个结构，所以不管准直透镜的焦距如何，都可以控制光路。 因此，如果准直透镜的焦距必须延长，则可以在不放大光学拾取器的情况下精确地调整光束偏移和场角。

公开(公告)号：US06282161B1

公开(公告)日：2001-08-28

申请号：US09369127

申请日：1999-08-05

申请人： Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

发明人： Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

IPC分类号： G11B390

CPC分类号： G11B7/0956

摘要： An optical recording and reproducing apparatus for adjusting a tilt of an optical pickup in accordance with an amount of jitter of a reproduction signal, a tilt adjusting method therefor, and a recording control method. The optical recording and reproducing apparatus includes an optical pickup having an object lens, a tilt adjusting unit for adjusting a tilt angle of the object lens, a jitter detecting unit for detecting an amount of jitter of a reproducing signal generated by the optical pickup from a disk, and a tilt controlling unit for minimizing the amount of jitter by feeding the amount of jitter detected by the jitter detecting unit back to the tilt adjusting unit. According to the optical recording and reproducing apparatus, there is no need for a space in which a displacement sensor detecting the tilt angle of the optical pickup faces the disk.

摘要翻译： 一种用于根据再现信号的抖动量，其倾斜调整方法和记录控制方法来调整光学拾取器的倾斜的光学记录和再现装置。 光学记录和再现装置包括具有物镜的光学拾取器，用于调节物镜的倾斜角度的倾斜调节单元，用于检测由光学拾取器产生的再现信号的抖动量的抖动检测单元， 盘和倾斜控制单元，用于通过将由抖动检测单元检测到的抖动量馈送回倾斜调节单元来最小化抖动量。 根据光学记录和再现装置，不需要用于检测光学拾取器的倾斜角度的位移传感器面对盘的空间。