公开(公告)号：US5706263A

公开(公告)日：1998-01-06

申请号：US364984

申请日：1994-12-28

申请人： Chul-woo Lee ,  Kyung-hwa Rim

发明人： Chul-woo Lee ,  Kyung-hwa Rim

IPC分类号： G01M11/00 ,  G06F3/08 ,  G11B7/00 ,  G11B7/005 ,  G11B7/13 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105

CPC分类号： B82Y10/00 ,  G11B7/133 ,  G11B11/10543 ,  G11B7/005

摘要： A method and apparatus for high-density reproduction of information recorded on an optical disk by increasing the optical resolution during reproduction. The apparatus focuses an optical beam reflected from the optical disk using a lens, and receives the focused reflected optical beam using a photodetector having an optical area whose width is smaller than the diameter of an optical spot formed thereon. As a result, jitter caused by interfering light, that is, light reflected from the circumference such as a recording portion adjacent to the optical disk, can be solved. Also, high-density reproduction can be performed by increasing the optical resolution during reproduction. The apparatus can be applied to an optical pickup for high-density recording.

摘要翻译： 一种用于通过增加再现期间的光学分辨率来高精度地再现记录在光盘上的信息的方法和装置。 该装置使用透镜对从光盘反射的光束进行聚焦，并且使用具有宽度小于形成在其上的光点的直径的光学区域的光电检测器来接收聚焦的反射光束。 结果，可以解决由干扰光引起的抖动，即，诸如与光盘相邻的记录部分等圆周反射的光。 此外，可以通过增加再现期间的光学分辨率来执行高密度再现。 该装置可以应用于用于高密度记录的光学拾取器。

公开(公告)号：US5617398A

公开(公告)日：1997-04-01

申请号：US609003

申请日：1996-02-29

申请人： Chul-woo Lee ,  Jong-sam Jeong ,  Eung-ho Kim

发明人： Chul-woo Lee ,  Jong-sam Jeong ,  Eung-ho Kim

IPC分类号： G02B7/18 ,  G02B7/182 ,  G02B27/14 ,  G11B7/12 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105 ,  G11B7/00

CPC分类号： G02B27/108 ,  G02B27/126 ,  G02B27/144 ,  G02B27/16 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1372 ,  G11B7/1395 ,  G11B11/10543

摘要： An optical pickup includes a Wollaston prism for passing incident light generated from a light source and splitting reflected light from an optical disk into two polarized components, and two photodetectors for receiving the split reflected light beams, thereby simplifying and miniaturizing the apparatus.

摘要翻译： 光拾取器包括用于使从光源产生的入射光通过的渥拉斯顿棱镜，并将来自光盘的反射光分成两个偏振分量，以及两个用于接收分离的反射光束的光电检测器，从而简化和小型化设备。

公开(公告)号：US5363353A

公开(公告)日：1994-11-08

申请号：US124762

申请日：1993-09-22

申请人： Young-woong Kim ,  Ick-hyoung Yoo ,  Chul-woo Lee

发明人： Young-woong Kim ,  Ick-hyoung Yoo ,  Chul-woo Lee

IPC分类号： G11B11/10 ,  G11B7/08 ,  G11B11/105 ,  G11B13/04

CPC分类号： G11B11/10552 ,  G11B11/10536

摘要： An magneto-optical disk drive comprises a driving apparatus for rotating a medium, an electromagnet positioned above or below the medium for producing a magnetic field on a recording surface of the medium, and an optical head by which laser light illuminates the recording surface and the laser light reflected from the recording surface is picked up. Here, the electromagnet comprises a plurality of subdivided electromagnet elements, a magnetic field concentrator by combining the electromagnet elements in a magnetic circuit and concentrating magnetic fields produced from the combined electromagnet elements on a portion of the electromagnet, and a center magnetic pole provided in an opposing position with respect to the optical head, to thereby make the magnetic field concentrated by the magnetic field concentrator pass through the recording surface of the medium. Accordingly, the recording time or data on the medium becomes greatly shortened, thereby enabling high speed data recording.

摘要翻译： 磁光盘驱动器包括用于旋转介质的驱动装置，位于介质上方或下方的电磁体，用于在介质的记录表面上产生磁场，以及激光照射记录表面的光学头 拾取从记录表面反射的激光。 这里，电磁体包括多个细分电磁体元件，磁场集中器通过组合磁路中的电磁体元件和从电磁体的一部分上的组合电磁元件产生的集中磁场，以及设置在电磁体中的中心磁极 相对于光头相对的位置，由此使得由磁场聚集器集中的磁场通过介质的记录表面。 因此，介质上的记录时间或数据变得大大缩短，从而能够进行高速数据记录。

公开(公告)号：US5206852A

公开(公告)日：1993-04-27

申请号：US814629

申请日：1991-12-30

申请人： Yeong-woong Kim ,  Ick-hyoung Yoo ,  Chul-woo Lee ,  Byeong-ho Park ,  Chang-geun Kim

发明人： Yeong-woong Kim ,  Ick-hyoung Yoo ,  Chul-woo Lee ,  Byeong-ho Park ,  Chang-geun Kim

IPC分类号： G11B7/135 ,  G11B7/18 ,  G11B11/10 ,  G11B11/105

CPC分类号： G11B7/1381 ,  G11B11/10532

摘要： A high-density recording optical head for increasing recording density in an optical head for recording and reproducing information optically. The disclosed optical head is provided with an iris for transmitting or passing the central portion of the reflected light when the light reflected from a medium is transmitted by an ordinary objective lens. Another iris is also provided for transmitting or reflecting the periphery of the reflected light and, in this case, an improved objective lens structure including two inner and outer elements is provided. Therefore, in the disclosed optical head, only light reflected from the actual recording region is detected as a reproduction signal. According to the disclosed optical head, high-density recording in identical media becomes possible.

摘要翻译： 一种高密度记录光头，用于增加用于光学记录和再现信息的光学头中的记录密度。 所公开的光头具有用于当由普通物镜透射从介质反射的光被透射或通过反射光的中心部分的虹膜。 还设置有用于透射或反射反射光的周边的虹膜，在这种情况下，提供了包括两个内部和外部元件的改进的物镜结构。 因此，在所公开的光头中，只有从实际记录区反射的光才被检测为再现信号。 根据所公开的光头，可以在相同介质中进行高密度记录。

公开(公告)号：US07701657B2

公开(公告)日：2010-04-20

申请号：US11700836

申请日：2007-02-01

申请人： Chul-woo Lee

发明人： Chul-woo Lee

IPC分类号： G11B5/02

CPC分类号： G11B5/012 ,  G11B20/1492 ,  G11B2005/0002 ,  G11B2220/2516

摘要： A magnetic recording method is provided where ternary data is recorded on a magnetic recording medium by forming a first area that corresponds to a first value of the data and in which a first magnetization state is continued at least during the minimum write width. A second area that corresponds to a second value of the data in which a second magnetization state is oppositely magnetized as compared with the first magnetization state is continued at least during the minimum write width. A third area that corresponds to a third value of the data in which the magnetic intensity detected by the read head corresponds to a “0.” Accordingly, the ternary data can be recorded using the characteristic that a signal having a width narrower than the detection width of the read head is not detected by the read head.

摘要翻译： 提供一种磁记录方法，其中通过形成与数据的第一值对应的第一区域，并且至少在最小写入宽度期间第一磁化状态持续至少在磁记录介质上记录三进制数据。 至少在最小写入宽度期间，第二区域对应于与第一磁化状态相比第二磁化状态相反磁化的数据的第二值。 第三区域对应于由读取头检测到的磁强度的数据的第三值对应于“0”。因此，可以使用宽度比检测宽度窄的信号的特性来记录三进制数据 读头的宽度不被读头检测。

公开(公告)号：US07564654B2

公开(公告)日：2009-07-21

申请号：US11483846

申请日：2006-07-11

申请人： Do-wan Kim ,  Chul-woo Lee ,  Ki-tag Jeong

发明人： Do-wan Kim ,  Chul-woo Lee ,  Ki-tag Jeong

IPC分类号： G11B5/54

CPC分类号： G11B5/54

摘要： An actuator latch device for locking an actuator of a hard disk drive, the actuator having a swing arm rotatably installed at a base member, a voice coil motor (VCM) coil provided at one end of the swing arm, and magnets oppositely arranged at the VCM coil. The actuator latch device includes a notch provided at one end of the swing arm; a latch lever, which is rotatably installed at a base member, having at a first end thereof a hook interfering with the notch to restrict one way rotation of the swing arm, and a counterbalance device at a second end thereof; and a stopper provided in the base member to block the counterbalance device to restrict a rotation of the latch lever.

摘要翻译： 一种致动器闩锁装置，用于锁定硬盘驱动器的致动器，致动器具有可旋转地安装在基座构件上的摆臂，设置在摆臂一端的音圈电机（VCM）线圈， VCM线圈。 致动器闩锁装置包括设置在摆臂一端的凹口; 可旋转地安装在基座构件上的闩锁杆，其第一端具有与所述凹口相互干扰的钩，以限制所述摆臂的单向旋转;以及在其第二端处的平衡装置; 以及设置在所述基座构件中以阻止所述平衡装置以限制所述闩锁杆的旋转的止动件。

公开(公告)号：US20080019037A1

公开(公告)日：2008-01-24

申请号：US11782095

申请日：2007-07-24

申请人： Chul-woo Lee

发明人： Chul-woo Lee

IPC分类号： G11B17/08

CPC分类号： G11B17/038

摘要： A disk spacer located on a rotator of a spindle motor to allow an additional disk to be mounted on the spindle motor, the disk spacer including a screw hole formed in a central part of the disk spacer to allow a clamping screw to pass through, a first disk pressing part located in a lower surface of an outer circumference part of the disk spacer to press surroundings of a central hole of a first disk directly mounted on the rotator, and a second disk supporter located on an upper surface of the outer circumference part of the disk spacer to support surroundings of a central hole of a second disk located above the first disk, and a hard disk drive having the disk spacer.

摘要翻译： 位于主轴电动机的旋转器上的盘形间隔件，以允许附加盘安装在主轴电动机上，盘形间隔件包括形成在盘形间隔件的中心部分中的螺纹孔，以允许夹紧螺钉穿过， 第一盘按压部，其位于所述盘形隔片的外周部的下表面的下表面，以按压直接安装在所述旋转体上的第一盘的中心孔的周围;以及第二盘支撑件，位于所述外周部的上表面 以支撑位于第一盘上方的第二盘的中心孔的环境，以及具有盘间隔件的硬盘驱动器。

公开(公告)号：US07289294B2

公开(公告)日：2007-10-30

申请号：US10852205

申请日：2004-05-25

申请人： Chul-woo Lee ,  Ki-tag Jeong ,  Tae-soo Kim

发明人： Chul-woo Lee ,  Ki-tag Jeong ,  Tae-soo Kim

IPC分类号： G11B5/54 ,  G11B33/14

CPC分类号： G11B5/60 ,  G11B5/54

摘要： A particle remover for a data storage device that removes particles attached to a surface of a disk, the particle remover including a fixed portion installed on a base plate of the data storage device; and pressure plates extending from the fixed portion toward the disk and respectively overlapping an upper surface and a lower surface of the disk, and having disk opposing surfaces with shapes that are convex toward the disk to form a space between the disk opposing surfaces and the surface of the disk that becomes narrower and then wider along a rotational direction of the disk.

摘要翻译： 一种用于去除附着在盘表面上的颗粒的数据存储装置的颗粒去除器，所述颗粒去除器包括安装在所述数据存储装置的基板上的固定部分; 以及从固定部朝向盘分别分别与盘的上表面和下表面重叠的压板，并且具有与盘相对的凸形形状的圆盘相对表面，以在盘相对表面和表面之间形成空间 的盘变得更窄，然后沿盘的旋转方向变宽。

公开(公告)号：US07079471B1

公开(公告)日：2006-07-18

申请号：US09442095

申请日：1999-11-17

申请人： Chong-sam Chung ,  Chul-woo Lee ,  In-sik Park

发明人： Chong-sam Chung ,  Chul-woo Lee ,  In-sik Park

IPC分类号： G11B7/135

CPC分类号： G11B7/1376 ,  G11B7/1353 ,  G11B2007/0006

摘要： First and second laser beam sources generate first and second laser beams of different wavelengths, respectively. A first collimating lens diverges the first laser beam at a predetermined angle so as to permit a fracture surface aberration of the first laser beam to fall below a predetermined value when the first laser beam generated from the first laser beam source is collected on the signal layer of the optical disk. A light receiving lens collects the laser beam reflected from the signal layer of the optical disk on a photo diode in the form of an optical spot of a predetermined size. A holographic lens has a pattern by which the first laser beam is converted into parallel rays so that the size of a spot of the first laser beam becomes identical with the size of a spot of the second laser beam as projected on the detecting section. The pattern of the holographic lens has a concentric annular concave-convex portion in which a plurality of annular prominences and depressions are arranged, and the depression and the prominence have a width which is gradually decreased from a center toward a most outer circumference of the concentric annular concave-convex portion. Further, an inner surface of each prominence has a step-like shape formed with at least one step. Preferably, the number of the step ranges from three to five. Accordingly, diameters of the optical spots of the two laser beams of different wavelengths are almost identical when the laser beams are transmitted through the holographic lens so that the optical spots are formed on the photo diode. As a result, with one objective lens and photo diode, information of two types of optical disks for laser beams of different wave lengths can be reproduced.

摘要翻译： 第一和第二激光束源分别产生不同波长的第一和第二激光束。 第一准直透镜将第一激光束以预定角度分开，以便当从第一激光束源产生的第一激光束收集在信号层上时，允许第一激光束的断裂表面像差降至预定值以下 的光盘。 光接收透镜以预定尺寸的光点的形式收集从光盘的信号层反射的光电二极管上的激光束。 全息透​​镜具有将第一激光束转换为平行光线的图案，使得第一激光束的光斑的尺寸与投影在检测部上的第二激光束的光斑尺寸相同。 全息透​​镜的图案具有同心环状的凹凸部，在该同心环状的凹凸部中配置有多个环状突起和凹部，凹部和凸部的宽度从同心的中心向最外周逐渐减小 环形凹凸部。 此外，每个凸起的内表面具有形成有至少一个台阶的台阶状。 优选地，步数为3至5。 因此，当激光束透射通过全息透镜时，两个不同波长的激光束的光点的直径几乎相同，使得光斑形成在光电二极管上。 结果，利用一个物镜和光电二极管，可以再现不同波长的激光束的两种类型的光盘的信息。

公开(公告)号：US07079171B2

公开(公告)日：2006-07-18

申请号：US10423988

申请日：2003-04-28

申请人： Bu-hyun Sung ,  Chul-woo Lee ,  Soon-kyo Hong ,  Young-woo Huh

发明人： Bu-hyun Sung ,  Chul-woo Lee ,  Soon-kyo Hong ,  Young-woo Huh

IPC分类号： B41J2/447 ,  B41J2/455

CPC分类号： H04N1/506 ,  B41J2/473

摘要： A color laser printer producing a color image using a single laser scanning unit includes a lighting unit including first and second laser diodes emitting beams of one polarization, a polarization prism transmitting or reflecting incident beams depending on a direction of polarization, and third and fourth laser diodes disposed in a different direction from the first and second laser diodes with respect to the polarization prism, a rotary polygon mirror that reflects the beam emitted along the same path from the lighting unit, an f-θ lens that focuses the beam reflected by the rotary polygon mirror, first and second polarization beam splitters, each of which transmits or reflects the beam passing through the f-θ lens depending on the direction of the polarization, and first through fourth photoconductive units on which the beams reflected and transmitted through the first and second polarization beam splitters are incident. In the color laser printer, lengths of optical paths between the f-θ lens and each of the first through fourth photoconductive units are equal. The color laser printer is constructed such that a plurality of light sources emitting the beams of one polarization are arranged separately and the beams emitted from the light sources are combined by the polarization prism to enter the f-θ lens, thereby reducing a thickness of the f-θ lens.