公开(公告)号：US20060218569A1

公开(公告)日：2006-09-28

申请号：US11385739

申请日：2006-03-22

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

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

IPC: G11B7/00

CPC classification number: G11B7/0933 ,  G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

Abstract: 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.

Abstract translation: 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：US07072114B2

公开(公告)日：2006-07-04

申请号：US11259262

申请日：2005-10-27

Applicant: Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

Inventor： Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

IPC: G02B5/18

CPC classification number: G11B7/1374 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/0944 ,  G11B7/127 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an objective lens having a focal length of an information recording surface in the DVD, an optical path control unit controls the light beams so that the light beam emitted from one of the laser light sources is directed to the objective lens and the light output from the objective lens is directed to the optical detection unit, and a phase shift unit between the optical path control unit and the objective lens and which shifts a phase of the second light to reduce the size of a beam spot which is formed the information recording surface in the CD-R.

公开(公告)号：US20050018560A1

公开(公告)日：2005-01-27

申请号：US10897015

申请日：2004-07-23

Applicant: Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

Inventor： Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

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

CPC classification number: G11B7/1353 ,  G11B7/1275 ,  G11B7/1374 ,  G11B2007/0006

Abstract: A compatible optical pickup including an optical unit and a focusing unit. The optical unit emits a short wavelength light for high-density recording media and a long wavelength light for low-density recording media, directs the short and long wavelength light to a recording medium, receives lights reflected by the recording medium, and detects an information reproduction signal and/or an error signal from the received lights. The focusing unit focuses light received from the optical unit to form a light spot on a recording surface of the recording medium, diffracts the short wavelength light into a zero order light and the long wavelength light into a second order light to be used as effective light for recording and/or reproduction. Thus, a high-density recording medium and a low-density recording medium having different thicknesses can be compatibly used.

Abstract translation: 一种兼容的光学拾取器，包括光学单元和聚焦单元。 光学单元发射用于高密度记录介质的短波长光和用于低密度记录介质的长波长光，将短波长和长波长光引导到记录介质，接收由记录介质反射的光，并检测信息 再现信号和/或来自接收到的光的误差信号。 聚焦单元将从光学单元接收的光聚焦在记录介质的记录表面上形成光点，将短波长的光衍射成零级光，将长波长的光衍射成二阶光，作为有效光 用于记录和/或再现。 因此，可以兼容使用具有不同厚度的高密度记录介质和低密度记录介质。

公开(公告)号：US06400658B1

公开(公告)日：2002-06-04

申请号：US09275814

申请日：1999-03-25

Applicant: Chang-Jin Yang ,  Pyong-Yong Seong ,  Seong-Sin Joo ,  Soo-Yul Jung ,  Jung-Eon Seo ,  Yong-Jae Lee ,  Jang-Hoon Yoo ,  Tae-Kyung Kim

Inventor： Chang-Jin Yang ,  Pyong-Yong Seong ,  Seong-Sin Joo ,  Soo-Yul Jung ,  Jung-Eon Seo ,  Yong-Jae Lee ,  Jang-Hoon Yoo ,  Tae-Kyung Kim

IPC: G11B17221

CPC classification number: G11B27/24 ,  G11B7/005 ,  G11B7/00718 ,  G11B7/00745 ,  G11B19/04 ,  G11B20/18 ,  G11B27/3027 ,  G11B2220/216 ,  G11B2220/2575

Abstract: A DVD-RAM disk reproduction apparatus for reducing an error during detection of ID data, which includes a first operational amplifier for obtaining a sum signal resulting from the addition of four picked-up signals picked up by divided-by-four photodiodes from a DVD-RAM disk having a header region and a recording region, second and third operational amplifiers for respectively obtaining two sum signals corresponding to the upper and lower regions of the header region resulting from the addition of the first and second picked-up signals and the third and fourth picked-up signals, respectively, a fourth operational amplifier for obtaining a difference signal between the two sum signals, a header region detector for detecting upper and lower header region signals corresponding to the upper header region and the lower header region based on the difference signal, and detecting a header region signal corresponding to a header region by logically summing the two detected signals, a first multiplexer for selecting one of the two sum signals obtained by the second and third operational amplifiers according to the upper header region signal, and a second multiplexer for selecting the sum signal selected by the first operational amplifier and the sum signal selected by the first multiplexer according to the header region signal, to thereby output the selected result to an equalizer. Thus, during detection of ID data in a header region, a difference signal between the picked-up four signals is not used, but a signal resulting from the addition of two signals among the picked-up signals according to the corresponding upper and lower regions of the header region is selectively used. Accordingly, ID data can be detected from a signal without deterioration, to thereby reduce an error and thus improve a detection margin.

Abstract translation: 一种用于在ID数据检测期间减少误差的DVD-RAM盘再现装置，其包括第一运算放大器，用于获得由DVD的四分之一光电二极管拾取的四个拾取信号的相加而得到的和信号 -RAM盘，具有标题区域和记录区域，第二和第三运算放大器，用于分别获得对应于由所述第一和第二拾取信号的相加产生的标题区域的上部和下部区域的两个和信号，以及第三个 和第四拾取信号，分别用于获得两个和信号之间的差分信号的第四运算放大器，用于检测对应于上标题区域和下标题区域的上标题区域信号和下标头区域信号的标题区域检测器， 差分信号，并且通过对两个检测到的信号进行逻辑求和来检测与标题区域相对应的标题区域信号，第一个mul 层叠器，用于根据上标头区域信号选择由第二和第三运算放大器获得的两个和信号之一;以及第二多路复用器，用于选择由第一运算放大器选择的和信号和由第一多路复用器选择的和信号， 到标题区域信号，从而将所选择的结果输出到均衡器。 因此，在标题区域中的ID数据的检测期间，不使用拾取的四个信号之间的差分信号，而是根据相应的上部和下部区域在拾取信号之间添加两个信号而产生的信号 选择使用标题区域。 因此，可以从信号中检测ID数据而不劣化，从而减少误差，从而提高检测余量。

公开(公告)号：US06337841B1

公开(公告)日：2002-01-08

申请号：US09425887

申请日：1999-10-25

Applicant: Kun-Soo Kim ,  Jong-Ryull Kim ,  Myoung-Soo Choi ,  Hyung-Taek Oh ,  Jong-Hwa Yu ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong ,  Jang-Hoon Yoo

Inventor： Kun-Soo Kim ,  Jong-Ryull Kim ,  Myoung-Soo Choi ,  Hyung-Taek Oh ,  Jong-Hwa Yu ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong ,  Jang-Hoon Yoo

IPC: G11B700

CPC classification number: G02B5/1876 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: A compatible optical pickup capable of recording or reproducing information on or from compact disc (CD) family media such as CD rewritable (CD-RW) and digital versatile disc (DVD) by adopting a stepped planar lens having a plurality of gratings. The compatible optical pickup includes a first optical source for emitting a first light beam having a predetermined wavelength; a second optical source for emitting a second light beam having a long wavelength relative to the first light beam; an optical path changing element for changing the traveling path of an incident light beam; an objective lens for condensing the first and second light beams onto optical discs having different thicknesses, respectively; an optical diffraction element having a first region which directly transmits the first and second light beams incident thereto, and a second region bounding the first region, which directly transmits the incident first light beam and diffractingly transmits the second light beam toward an optical axis; and a photodetector for detecting an information signal and an error signal from the first and second light beam which have been reflected by the optical discs and passed through the optical path changing element. Also, the optical diffraction element is a stepped planar lens in which one or more stepped pattern periods each having a plurality of annular gratings are arranged in the second region, wherein the depths of the gratings become smaller moving away from the optical axis, and the maximum depth thereof is a predetermined value.

Abstract translation: 一种兼容的光学拾取器，其能够通过采用具有多个光栅的阶梯式平面透镜来记录或再现诸如CD可重写（CD-RW）和数字通用光盘（DVD）的光盘（CD）族介质上的信息。 兼容光学拾取器包括用于发射具有预定波长的第一光束的第一光源; 用于发射相对于第一光束具有长波长的第二光束的第二光源; 用于改变入射光束的行进路径的光路改变元件; 用于将第一和第二光束分别聚光到具有不同厚度的光盘上的物镜; 光学衍射元件，其具有直接透射入射到其上的第一和第二光束的第一区域和限定第一区域的第二区域，该第二区域直接透射入射的第一光束并将第二光束衍射地朝向光轴传播; 以及光检测器，用于检测已被光盘反射并通过光路改变元件的来自第一和第二光束的信息信号和误差信号。 此外，光学衍射元件是阶梯式平面透镜，其中在第二区域中布置有具有多个环形光栅的一个或多个阶梯图案周期，其中光栅的深度变得较小，远离光轴移动，并且 其最大深度是预定值。

公开(公告)号：US06285646B1

公开(公告)日：2001-09-04

申请号：US09198451

申请日：1998-11-24

Applicant: Jang-Hoon Yoo ,  Yong-Jae Lee ,  Pyong-Yong Seong ,  Chul-Woo Lee

Inventor： Jang-Hoon Yoo ,  Yong-Jae Lee ,  Pyong-Yong Seong ,  Chul-Woo Lee

IPC: G11B700

CPC classification number: G11B7/1374 ,  G11B2007/0006

Abstract: An optical pickup device including an objective lens which is compatible with a plurality of optical disks of respectively different specifications, such as a digital versatile disk (DVD), a compact disk-recordable (CD-R) medium, a compact disk (CD) and a laser disk (LD). The optical pickup device includes a laser source to emit light, an objective lens to focus the light emitted from the laser source on respective information recording surfaces of a plurality of optical recording media as an optimal optical spot, and an optical detector to detect light reflected from the information recording surface of the optical recording medium on which the optical spot has been focused and transmitted through the objective lens. The objective lens includes a first lens area, a second lens area, and a third lens area to focus the light emitted from the laser source. The first lens area has an aspherical surface corresponding to a first optical recording medium and a second optical recording medium, the second lens area has an aspherical surface corresponding to the second optical recording medium, and the third lens area has an aspherical surface corresponding to the first optical recording medium. As a result, the optical pickup can be compatible with a plurality of the optical disks of a respectively different specification irrespective of the thickness of the disk.

Abstract translation: 一种光学拾取装置，包括与分别不同规格的多个光盘兼容的物镜，诸如数字通用盘（DVD），可压缩盘可记录（CD-R）介质，光盘（CD） 和激光盘（LD）。 光拾取装置包括用于发光的激光源，将从激光源发射的光聚焦到作为最佳光点的多个光记录介质的各个信息记录表面上的物镜，以及检测反射光的光检测器 从其上已经聚焦并透过物镜的光记录介质的信息记录表面。 物镜包括第一透镜区域，第二透镜区域和用于聚焦从激光源发射的光的第三透镜区域。 第一透镜区域具有对应于第一光学记录介质和第二光学记录介质的非球面，第二透镜区域具有对应于第二光学记录介质的非球面，并且第三透镜区域具有对应于第二光学记录介质的非球面 第一光记录介质。 结果，光拾取器可以与分别不同规格的多个光盘兼容，而与盘的厚度无关。

公开(公告)号：US5822135A

公开(公告)日：1998-10-13

申请号：US640474

申请日：1996-05-01

Applicant: Chul-woo Lee ,  Dong-ho Shin ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Kun-ho Cho ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Yong-hoon Lee

Inventor： Chul-woo Lee ,  Dong-ho Shin ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Kun-ho Cho ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Yong-hoon Lee

IPC: B29D11/00 ,  G02B3/10 ,  G02B27/58 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G02B9/00

CPC classification number: G11B7/1353 ,  B29D11/00009 ,  G02B27/58 ,  G02B3/10 ,  G11B7/0909 ,  G11B7/133 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1381 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727 ,  G11B7/0045 ,  G11B7/005 ,  Y10S425/808

Abstract: A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for controlling the light in an intermediate region between near and far axes of an incident light beam, thus providing a simplified and inexpensive device for using discs of differing thickness in a single disc drive, by reducing the spherical aberration effect.

公开(公告)号：US08416672B2

公开(公告)日：2013-04-09

申请号：US12963785

申请日：2010-12-09

Applicant: Ui-yol Kim ,  Yong-jae Lee ,  Pyong-yong Seong ,  Hong-kuk Kim

Inventor： Ui-yol Kim ,  Yong-jae Lee ,  Pyong-yong Seong ,  Hong-kuk Kim

IPC: G11B7/13

CPC classification number: G11B7/131 ,  G11B2007/0006

Abstract: An optical pickup, photodetector, and optical drive adopting the optical pickup are provided. The optical pickup may include a light emitting system having a plurality of light sources corresponding to a plurality of mediums a light receiving system including a photodetector for converting light reflected from a medium into an electrical signal. The photodetector may include first and second light receiving sensors corresponding to the plurality of mediums, each of the first and second light receiving sensors comprising a plurality of regions, each region comprising a plurality of sectors. The plurality of regions of the first and second light receiving sensors may include shared sectors that are shared by the first and second light receiving sensors and exclusive sectors that are exclusively used in the first light receiving sensor or the second light receiving sensor.

Abstract translation: 提供采用光学拾取器的光学拾取器，光电检测器和光学驱动器。 光拾取器可以包括具有对应于多个介质的多个光源的发光系统，光接收系统包括用于将从介质反射的光转换成电信号的光电检测器。 光电检测器可以包括对应于多个介质的第一和第二光接收传感器，第一和第二光接收传感器中的每一个包括多个区域，每个区域包括多个扇区。 第一和第二光接收传感器的多个区域可以包括由第一和第二光接收传感器共享的共享扇区和专门用于第一光接收传感器或第二光接收传感器的专用扇区。

公开(公告)号：US07343103B2

公开(公告)日：2008-03-11

申请号：US11413093

申请日：2006-04-28

Applicant: Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

Inventor： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC: H04B10/08 ,  H04B10/06

CPC classification number: G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

Abstract: An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

Abstract translation: 一种用于使用单个装置来检测由多个光源产生的光束功率的装置和方法。 该装置包括接收由多个光源中的一个产生的光束功率的光接收单元和选择增益的放大单元，根据所选择的增益放大由光接收单元接收的光束功率，以及 输出放大的光束功率作为检测到的光束功率。 根据该装置和方法，通过根据各个光源的特性确定的增益来放大接收光束功率（或放大增益）。 因此，考虑到每个光源的足够的动态范围，可以提供检测到的光束功率，从而实现有效的APC。

公开(公告)号：US07230905B2

公开(公告)日：2007-06-12

申请号：US10455363

申请日：2003-06-06

Applicant: Kun-soo Kim ,  Ju-hyung Lee ,  Pyong-yong Seong ,  Sun-mook Park

Inventor： Kun-soo Kim ,  Ju-hyung Lee ,  Pyong-yong Seong ,  Sun-mook Park

IPC: G11B7/135

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B7/1378 ,  G11B2007/0006

Abstract: An optical pickup includes a light source module in which first and second light sources that emit first and second light beams of different wavelengths are integrated into a single package, an objective lens that focuses the first and second light beams to form a light spot on a recording surface of a recording medium, a light path changer that changes a path along which the first and second light beams propagate, a photodetector that receives the first and second light beams entered via the objective lens and the light path changer and detects an information signal and/or error signal, and an optical element disposed on a path along which the first and second light beams propagate to act as a lens with respect to only one of the first and second light beams so as to correct a position difference along a light propagation direction between the first and second light sources. Accordingly, it possible to correct a position difference along a light propagation axis between the two light sources in the light source module. Obtaining the same light propagation axis is made possible by using the optical element to make the two light propagation axes coincidental or by using a separate optical element to perform this function. This allows the optical pickup to be used for recording as well as for reproducing.

Abstract translation: 光拾取器包括：光源模块，其中发射不同波长的第一和第二光束的第一和第二光源被集成到单个封装中;物镜，其聚焦第一和第二光束以在 记录介质的记录表面，改变第一和第二光束传播的路径的光路改变器，接收经由物镜进入的第一和第二光束的光电检测器和光路改变器，并检测信息信号 和/或误差信号，以及光学元件，其设置在第一和第二光束沿着该路径传播以用作相对于第一和第二光束中的一个的透镜，以便校正沿着光的位置差 第一和第二光源之间的传播方向。 因此，可以校正光源模块中的两个光源之间沿着光传播轴的位置差。 通过使用光学元件使两个光传播轴一致或通过使用单独的光学元件来执行该功能，可以获得相同的光传播轴。 这允许光学拾取器用于记录以及再现。