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1. 发明授权

US6167004A Error signal detecting apparatus of optical pickup adopting hologram grating 有权
标题翻译：采用全息光栅的光学拾取器的误差信号检测装置
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。

2. 发明授权

US06381207B1 Optical pickup movable to control beam shift and field angle in an optical disk drive 有权
标题翻译：光拾取器可移动以控制光盘驱动器中的光束偏移和场角
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。

3. 发明授权

US06636464B1 Optical pickup device capable of detecting stable error signal 有权
标题翻译：能够检测稳定误差信号的光学拾取装置
公开(公告)号：US06636464B1
公开(公告)日：2003-10-21
申请号：US09588224
申请日：2000-06-06
申请人： Yong-jae Lee , Pyong-yong Seong , Jang-hoon Yoo , Byung-ryul Ryoo , Yong-ki Son
发明人： Yong-jae Lee , Pyong-yong Seong , Jang-hoon Yoo , Byung-ryul Ryoo , Yong-ki Son
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/0901 , G11B7/0912 , G11B7/094 , G11B7/131
摘要： An optical pickup device employing a signal detection unit including a hologram element having a plurality of pattern regions for diffracting and/or focusing light reflected and incident from a recording medium, a photodetector having a plurality of light receiving regions for receiving and photoelectrically converting the light diffracted by the hologram element and a signal operation unit for generating a focus error signal and/or a track error signal from a signal detected from the photodetector. The optical pickup device can implement a stable servo operation even at deviations of the photodetector, a change in the wavelength of light emitted from the light source, and/or shift of focusing means such as an objective lens, and can record and/or reproduce high-density information on/from the recording medium.
摘要翻译：一种采用信号检测单元的光学拾取装置，包括具有多个图案区域的全息元件，用于衍射和/或聚焦从记录介质反射和入射的光;具有多个光接收区域的光电检测器，用于接收和光电转换光由全息元件衍射，以及用于从从光电检测器检测的信号产生聚焦误差信号和/或轨道误差信号的信号操作单元。光拾取装置即使在光电检测器的偏差，光源发射的光的波长变化和/或诸如物镜的聚焦装置的移动中也能够实现稳定的伺服操作，并且可以记录和/或再现来自记录介质的高密度信息。

4. 发明授权

US06587481B1 Light emitting module and compatible optical pickup device adopting the same 有权
标题翻译：采用相同的发光模块和兼容的光学拾取装置
公开(公告)号：US06587481B1
公开(公告)日：2003-07-01
申请号：US09552621
申请日：2000-04-19
申请人： Pyong-yong Seong , Yong-jae Lee , Byung-ryul Ryoo , Yong-ki Son
发明人： Pyong-yong Seong , Yong-jae Lee , Byung-ryul Ryoo , Yong-ki Son
IPC分类号： H01S310
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0909 , G11B7/123 , G11B7/127 , G11B7/131 , G11B7/1356 , G11B7/1362 , G11B7/22 , G11B2007/0006
摘要： A light emitting module packaging two light sources emitting two light beams of different wavelengths, and a compatible optical pickup device adopting the module are provided. The light emitting module includes a base, first and second light sources installed on the base, for emitting laser beams in different wavelength regions, a beam splitter and a monitoring photodetector for monitoring the optical outputs of the first and second light sources by receiving the beams emitted from the first and second light sources and split from the beam splitter in one direction. Also, another light emitting module includes a substrate, first and second light sources installed on the substrate for emitting laser beams of first and second wavelengths from both lateral sides thereof, a reflection member for reflecting the laser beam emitted from one lateral side of each of the first and second light sources to proceed in one direction, and first and second monitoring photodetectors for monitoring optical outputs of the first and second light sources. The compatible optical pickup device includes the light emitting module having the above structure, an objective lens for focusing first and second laser beams on an optical recording medium, an optical path converting device, a grating arranged on an optical path between the light emitting module and the optical path converting device for diffracting and transmitting an incident light, a photodetector.
摘要翻译：本发明提供一种封装发射两个不同波长光束的两个光源的发光模块，以及采用该模块的兼容的光拾取装置。发光模块包括安装在基座上的用于发射不同波长区域的激光束的基座，第一和第二光源，分束器和监视光电检测器，用于通过接收光束来监测第一和第二光源的光输出从第一和第二光源发射并沿一个方向从分束器分离。此外，另一发光模块包括基板，安装在基板上的第一和第二光源，用于从其两个侧面发射第一和第二波长的激光束;反射构件，用于反射从每个的一个侧面发射的激光束第一和第二光源沿一个方向进行，以及第一和第二监视光电检测器，用于监视第一和第二光源的光输出。兼容的光学拾取装置包括具有上述结构的发光模块，用于将第一和第二激光束聚焦在光学记录介质上的物镜，光路转换装置，布置在发光模块与发光模块之间的光路上的光栅用于衍射和透射入射光的光路转换装置，光电检测器。

5. 发明授权

US06282161B1 Optical recording and reproducing apparatus, tilt adjusting method appropriate therefor, and recording control method 有权
标题翻译：光学记录和再现装置，适用于其的倾斜调整方法和记录控制方法
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。

6. 发明授权

US06584047B1 Pickup actuator 失效
标题翻译：拾取执行器
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。

7. 发明授权

US06507554B2 Actuator for optical pick-up and method of rolling driving coil therefor 失效
标题翻译：用于光学拾取的执行器及其驱动线圈的方法
公开(公告)号：US06507554B2
公开(公告)日：2003-01-14
申请号：US09301464
申请日：1999-04-29
申请人： Yong-ki Son , Byung-ryul Ryoo , Yong-hoon Lee , Seok-jung Kim
发明人： Yong-ki Son , Byung-ryul Ryoo , Yong-hoon Lee , Seok-jung Kim
IPC分类号： G11B1700
CPC分类号： G11B21/16 , G11B7/0933 , G11B7/0935 , G11B33/08
摘要： An actuator for an optical pick-up and a method of rolling a driving coil using the same. The actuator for the optical pick-up includes a bobbin for holding an object lens, a suspension for connecting the bobbin to a holder, and a magnetic driver. The magnetic driver includes a pair of permanent magnets respectively positioned near opposite sides of the bobbin, a plurality of tracking coils with pairs of the tracking coils rolled on opposite side surfaces of the bobbin, and a focus coil rolled around the bobbin and the plurality of tracking coils. The plurality of tracking coils and focus coil receive current to move the optical pickup through interaction with the permanent magnets, and a strong force is generated by narrowing a distance between the permanent magnets and the focus coil based upon the focus coil being rolled around the bobbin and the tracking coils. Accordingly, it is possible to improve the sensitivity and to prevent improper tilting of the actuator.
摘要翻译：用于光学拾取器的致动器和使用其的滚动驱动线圈的方法。用于光学拾取器的致动器包括用于保持物镜的线轴，用于将线轴连接到保持器的悬架以及磁性驱动器。磁驱动器包括分别位于线轴相对侧的一对永久磁铁，多个跟踪线圈，其具有在绕线筒的相对侧面上滚动的跟踪线圈对，以及围绕线轴卷绕的聚焦线圈，跟踪线圈。多个跟踪线圈和聚焦线圈接收电流以通过与永磁体的相互作用来移动光学拾取器，并且基于聚焦线圈围绕线轴卷绕而使永磁体和聚焦线圈之间的距离变窄，产生强大的力和跟踪线圈。因此，可以提高灵敏度并防止致动器的不正确倾斜。

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