公开(公告)号：US6167004A

公开(公告)日：2000-12-26

申请号：US433296

申请日：1999-11-03

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

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

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

CPC classification number: G11B7/131 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1353

Abstract: 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.

Abstract translation: 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：US6091691A

公开(公告)日：2000-07-18

申请号：US23046

申请日：1998-02-13

Applicant: Jang-hoon Yoo ,  Chong-sam Chung ,  Chul-woo Lee ,  Kun-ho Cho

Inventor： Jang-hoon Yoo ,  Chong-sam Chung ,  Chul-woo Lee ,  Kun-ho Cho

IPC: G11B7/00 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135

CPC classification number: G11B7/1353 ,  G11B7/126 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens, and a light detector. The objective lens has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium, during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium, during reproduction of the second optical recording medium.

Abstract translation: 一种与多个使用不同波长的光的多个光学记录介质兼容的光学拾取器。 光拾取器包括至少一个光源，具有将从光源发射的光聚焦到多个光学记录介质之一的信息记录表面上的最佳光点中的功能的物镜，以及光检测器 在从形成有光斑的光记录介质的信息记录面反射后，检测透过物镜的光。 物镜具有内部区域，环形透镜区域和外部区域，使得环形透镜区域将内部区域与外部区域分开并且具有以顶点为中心的环形。 内部区域，环形透镜区域和外部区域具有非球面形状，以将透过内部区域和外部区域的光聚焦成单个光点，通过该单个光点可以从相对较薄的第一个信息记录表面读取信息 光学记录介质和透射通过位于内部区域和外部区域之间的环形透镜区域的散射光，使得在再现第一光学记录介质期间不能从第一光学记录介质的信息记录表面读取信息。 内部区域和环形透镜区域将光透射到单个光点中，通过该单个光点可以从相对较厚的第二光学记录介质的信息记录表面读取信息，并散射透过外部透镜区域的光，从而不能从 在第二光学记录介质的再现期间，第二光学记录介质的信息记录表面。

公开(公告)号：US5805556A

公开(公告)日：1998-09-08

申请号：US777130

申请日：1996-12-30

Applicant: Chul-woo Lee ,  Jang-hoon Yoo ,  Yong-hoon Lee ,  Kyung-hwa Rim

Inventor： Chul-woo Lee ,  Jang-hoon Yoo ,  Yong-hoon Lee ,  Kyung-hwa Rim

IPC: G11B7/12 ,  G11B7/135 ,  G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/123

Abstract: An optical pickup apparatus for recording and reproducing information, which is manufactured to be extremely small in a hybrid type. The optical pickup apparatus includes a first holographic optical element as a beam expander for diffracting to enlarge a diverging angle of an incident beam emitted from a light source and a second holographic optical element as an object lens for diffracting the incident beam whose diverging angle is enlarged by the first holographic optical element to focus the incident beam on an optical disk. Here, the first holographic optical element has a function of a beam splitter for diffracting a reflected beam to be separated as well as a function of a beam expander. The optical pickup apparatus is manufactured to be extremely small and ultralight due to its short optical path. Therefore, the optical pickup apparatus is influential on the miniaturization of various optical information processing systems, and contributes to a stable operation and a high speed search due to its excellent optical performance.

Abstract translation: 一种用于记录和再现信息的光学拾取装置，其被制造为非常小的混合型。 光拾取装置包括作为扩束器的第一全息光学元件，用于衍射以扩大从光源发射的入射光束的发散角和第二全息光学元件作为用于衍射发散角度扩大的入射光束的物镜 通过第一全息光学元件将入射光束聚焦在光盘上。 这里，第一全息光学元件具有用于衍射待分离的反射光束的分束器以及光束扩展器的功能。 光学拾取装置由于其光路短而被制造成非常小和超轻。 因此，光学拾取装置对各种光学信息处理系统的小型化有影响，由于其优异的光学性能，有助于稳定的操作和高速搜索。

公开(公告)号：US5802037A

公开(公告)日：1998-09-01

申请号：US708988

申请日：1996-09-06

Applicant: Chul-woo Lee ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Kun-ho Cho ,  Jang-hoon Yoo ,  Soo-yeul Jung

Inventor： Chul-woo Lee ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Kun-ho Cho ,  Jang-hoon Yoo ,  Soo-yeul Jung

IPC: G11B7/08 ,  G11B7/00 ,  G11B7/09 ,  G11B7/13

CPC classification number: G11B7/131 ,  G11B7/0909 ,  G11B7/133 ,  G11B2007/0006

Abstract: An optical pickup device which is capable of reproducing and recording information from/onto at least two kinds of discs having different thicknesses includes a light source, an objective lens provided along the light path from the light source facing the plane of a disc and having a predetermined effective diameter, a beam splitter provided between the objective lens and the light source, and a photodetector for detecting the beam split from the light splitter and reflected from the disc, wherein the photodetector has a first detection region and a second detection region provided in the peripheral portion of the first detection region. The optical pickup device is simplified and the manufacturing cost therefor is low. Also, by reducing the spherical aberration effect for the light, discs having different thicknesses can be used for a single disc drive.

Abstract translation: 能够从具有不同厚度的至少两种光盘再现和记录信息的光学拾取装置包括：光源，沿着从光源面向光盘面的光路设置的物镜，具有 设置在所述物镜和所述光源之间的分束器，以及用于检测从所述分光器分离并从所述光盘反射的光束的光电检测器，其中所述光电检测器具有第一检测区域和设置在所述光源中的第二检测区域 第一检测区域的周边部分。 光拾取装置简化，制造成本低。 此外，通过减小光的球面像差效应，可以将具有不同厚度的盘用于单个盘驱动器。

公开(公告)号：US5793407A

公开(公告)日：1998-08-11

申请号：US507914

申请日：1995-07-27

Applicant: Tae-seok Park ,  Chul-woo Lee ,  Jang-hoon Yoo

Inventor： Tae-seok Park ,  Chul-woo Lee ,  Jang-hoon Yoo

IPC: G11B7/00 ,  G02B27/58 ,  G11B7/0045 ,  G11B7/12 ,  G11B7/125 ,  G11B7/135 ,  B41J2/47

CPC classification number: B82Y10/00 ,  G02B27/58 ,  G11B7/122 ,  G11B7/1367 ,  G11B7/1381 ,  G11B7/1387 ,  G11B2007/13727

Abstract: A high density recording method for performing high density recording by reducing a light spot size in an optical pickup for recording information by scanning an optical disk with the light spot, spatially controlling the phase or the intensity of light being focused within the optical focal length of an objective lens by employing a diffraction optical element so as to form on the optical disk a light spot whose diameter is reduced according to the width of the portion for controlling the phase or intensity of the light. The distribution of the optical intensity is variable depending on the distance between the diffraction optical element and the optical disk, to thereby enable theoretically forming a limitlessly small light spot, and actually, greatly increase the recording capacity. The diffraction optical element can be used as a floating slider in an optical pickup having a swing arm.

Abstract translation: 一种高密度记录方法，用于通过用光斑扫描光盘来减少用于记录信息的光学拾取器中的光点尺寸来进行高密度记录，空间地控制聚焦在光焦度的光焦度内的光的相位或强度 通过采用衍射光学元件在物镜上形成直径根据用于控制光的相位或强度的部分的宽度而减小的光斑的物镜。 光强度的分布根据衍射光学元件和光盘之间的距离而变化，从而能够在理论上形成无限小的光斑，实际上大大提高了记录容量。 衍射光学元件可以用作具有摆臂的光学拾取器中的浮动滑块。

公开(公告)号：US5629514A

公开(公告)日：1997-05-13

申请号：US458165

申请日：1995-06-02

Applicant: Chul-woo Lee ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Kyung-hwa Rim

Inventor： Chul-woo Lee ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Kyung-hwa Rim

IPC: G11B7/09 ,  G11B7/135 ,  G01J1/20 ,  G11B7/00

CPC classification number: G11B7/1356 ,  G11B7/0908 ,  G11B7/0917 ,  G11B7/0943 ,  G11B2007/0919

Abstract: A focus error detector for detecting a signal representing a degree of a focus error of an objective lens with respect to an optical disk in an optical pickup, in order to eliminate errors due to an optical axis shift or tilt of the reflected light reflected from the optical disk, includes a diffraction device for diffracting and splitting the reflected light reflected. The focus error detector a critical angle reflector having critical angle reflecting planes for reflecting the two diffracted light rays at two critical angles, two bi-segmented photo-detectors for receiving the two diffracted light rays reflected from the critical angle reflector, respectively, and detecting signals depending on the received light amount, and a circuit for differentiating and summing each signal of the two bi-segmented photo-detectors so as to offset the light amount difference due to the tilt or shift of the reflected light and outputting a desired signal. Therefore, only an original focus error signal is output, irrespective of an optical shift or tilt of the reflected light, so that malfunction of the optical pickup is prevented and clean recording and reproduction is enabled.

Abstract translation: 一种聚焦误差检测器，用于检测表示物镜相对于光学拾取器中的光盘的聚焦误差的程度的信号，以便消除由于光学偏移反射的反射光的光轴偏移或倾斜引起的误差 光盘包括用于衍射和分裂反射的反射光的衍射装置。 聚焦误差检测器，具有用于以两个临界角度反射两个衍射光线的临界角反射面的临界角反射镜，分别用于接收从临界角反射器反射的两个衍射光线的两个双段光电检测器， 信号，以及用于对两个双分段光电检测器的每个信号进行微分和求和以便偏移由于反射光的倾斜或偏移引起的光量差异并输出所需信号的电路。 因此，不管反射光的光学偏移或倾斜如何，仅输出原始聚焦误差信号，从而防止光学拾取器的故障，并且能够进行清洁的记录和再现。

公开(公告)号：US5587976A

公开(公告)日：1996-12-24

申请号：US555967

申请日：1995-11-13

Applicant: Jang-hoon Yoo ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Chul-woo Lee

Inventor： Jang-hoon Yoo ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Chul-woo Lee

IPC: G11B11/10 ,  G11B5/00 ,  G11B5/012 ,  G11B5/35 ,  G11B5/596 ,  G11B7/12 ,  G11B11/105 ,  G11B7/00

CPC classification number: G11B11/10543 ,  G11B5/00 ,  G11B5/012 ,  G11B5/35 ,  G11B5/596

Abstract: An optical pickup for an optical magnetic disc includes a light source, a grating for diffracting the light into a main light beam and auxiliary light beams, a plurality of magnetic dipole tips arranged above the optical magnetic disc so as to interact with the magnetic signal stored in the optical magnetic disc. Also, a plurality of mirror members each attached to the rear of each magnetic dipole tips are for reflecting the light incident on the mirror member, and a photodetector for detecting track errors and the stored information by receiving the light reflected from the mirror members are provided, thereby detecting the error signal and reproducing information by the interaction with the magnetic dipoles of the disc so that the recording density can be increased without increasing the conventional land and groove areas in the disc.

Abstract translation: 一种用于光磁盘的光拾取器包括光源，用于将光衍射成主光束的光栅和辅助光束，布置在光磁盘上方的多个磁偶极子尖端，以便与存储的磁信号相互作用 在光磁盘中。 此外，各个安装在每个磁偶极头的后面的多个镜构件用于反射入射在镜构件上的光，并且设置用于检测轨道错误的光电检测器和通过接收从镜构件反射的光的存储信息 从而通过与盘的磁偶极子的相互作用来检测误差信号和再现信息，从而可以增加记录密度，而不增加盘中常规的平台和凹槽区域。

公开(公告)号：US08994785B2

公开(公告)日：2015-03-31

申请号：US13350218

申请日：2012-01-13

Applicant: Jung-pa Seo ,  Jang-hoon Yoo ,  Liefeng Zhao

Inventor： Jung-pa Seo ,  Jang-hoon Yoo ,  Liefeng Zhao

IPC: H04N5/262 ,  G06T3/00 ,  H04N5/232

CPC classification number: G06T3/0087 ,  H04N5/23238

Abstract: A method for generating video data and an image photographing device implementing the same are provided. The method includes acquiring annular panoramic video data by performing panoramic video photographing, selecting an extraction area from each frame of the annular panoramic video data, and generating video data by combining the extraction area selected from each frame.

Abstract translation: 提供了一种用于产生视频数据的方法和实现其的图像拍摄装置。 该方法包括通过执行全景视频拍摄获取环形全景视频数据，从环形全景视频数据的每一帧中选择提取区域，以及通过组合从每个帧中选择的提取区域来生成视频数据。

公开(公告)号：US08848502B2

公开(公告)日：2014-09-30

申请号：US10441111

申请日：2003-05-20

Applicant: Chul-woo Lee ,  Jang-hoon Yoo

Inventor： Chul-woo Lee ,  Jang-hoon Yoo

IPC: G11B7/135 ,  G11B7/1353 ,  G11B7/1392 ,  G11B7/1374 ,  G11B7/1372 ,  G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical pickup having an objective lens, disposed opposite a disk, having a light passing region divided into central, intermediate and periphery regions corresponding to a near axis area, an intermediate axis area and a far axis area of incident light, where the curvature of the central and peripheral regions is optimized for a thin disk and that of the intermediate region is optimized for a thick disk, a light source irradiating light toward a disk through the objective lens; a photo detector for detecting light reflected from the disk, and a beam splitter, disposed between the objective lens and the light source, for transmitting light from the light source toward the objective lens and for diffracting light reflected from the disks toward the photo detector; and a processing unit to process an information signal to control the incident light generated by the light source, and to process the detected light from the photodetector. Therefore, the optical pickup device can be used for both compact disks (CDs) that are thick using light beam passing the near and intermediate regions of said objective lens, and digital video disks (DVDs) that are thin using light beam passing the near and far axis regions of said objective lens, and detect signals without picking up noise regardless of the thickness of the disk.

Abstract translation: 一种具有光学拾取装置的记录/再现装置，其具有很少的球面像差的光利用效率。 记录和/或再现装置包括具有与光盘相对设置的物镜的光学拾取器，具有被分成对应于近轴区域的中心，中间和周边区域的光通过区域，中间轴区域和远轴区域 入射光的中心区域和外围区域的曲率优化为薄盘，中间区域的曲率针对厚盘优化，光源通过物镜向盘照射光; 用于检测从光盘反射的光的光检测器和设置在物镜和光源之间的光束分离器，用于将光从光源向物镜透射，并将从光盘反射的光衍射到光检测器; 以及处理单元，处理信息信号以控制由光源产生的入射光，并处理来自光电检测器的检测光。 因此，光拾取装置可以用于使用通过所述物镜的近中和中间区域的光束而使用厚度的光盘（CD），以及使用经过近距离的光束的薄的数字视盘（DVD） 所述物镜的远轴区域，无论盘的厚度如何，都可以检测信号而不拾取噪声。

公开(公告)号：US08503091B2

公开(公告)日：2013-08-06

申请号：US13046881

申请日：2011-03-14

Applicant: Jung-pa Seo ,  Jang-hoon Yoo

Inventor： Jung-pa Seo ,  Jang-hoon Yoo

IPC: G02B15/02

CPC classification number: G02B15/04 ,  G02B15/173 ,  G02B15/177

Abstract: A lens system and a photographing apparatus including the lens system are provided, the lens system including a first sub lens system that includes a plurality of lens groups, and a second sub lens system that includes a replacement lens group that replaces or is replaced by some of the plurality of lens groups.

Abstract translation: 提供一种透镜系统和包括该透镜系统的拍摄设备，所述透镜系统包括包括多个透镜组的第一子透镜系统和包括替换或替换为一些的替换透镜组的第二子透镜系统 的多个透镜组。