公开(公告)号：US07149176B2

公开(公告)日：2006-12-12

申请号：US10268076

申请日：2002-10-10

Applicant: Yong-hoon Lee ,  Han-kook Choi ,  Seok-jung Kim ,  In-sik Park ,  Chong-sam Chung

Inventor： Yong-hoon Lee ,  Han-kook Choi ,  Seok-jung Kim ,  In-sik Park ,  Chong-sam Chung

IPC: G11B7/24

CPC classification number: G11B7/24 ,  G11B7/007

Abstract: A compact high-density optical disc capable of securing recording/reproducing characteristics and high-density recording capacity. The high-density optical disc has a whole diameter of 80 mm or less to 28 mm, a whole thickness in a range of 0.3–0.7 mm, and a position where data starts being recorded in a range of 27–45 mm of the diameter. Thus, an existing disc drive can be used, the size of the high-density optical disc can be reduced, and high-density recording capacity can be secured.

公开(公告)号：US07085212B2

公开(公告)日：2006-08-01

申请号：US09794389

申请日：2001-02-28

Applicant: Han-kook Choi ,  Yong-hoon Lee ,  Seok-jung Kim

Inventor： Han-kook Choi ,  Yong-hoon Lee ,  Seok-jung Kim

IPC: G11B7/00 ,  G11B23/03

CPC classification number: G11B17/043 ,  G11B17/047 ,  G11B23/0302

Abstract: A disk cartridge and a disk drive apparatus. The disk cartridge has a reflector to identify the type of disk, and the disk drive apparatus has an optical emitter/detector to irradiate light on the reflector and detect light reflected from the reflector to identify the type of disk. A large number of identification marks can be provided by changing the angle of reflection and the amount of light reflected from the reflector. Accordingly, disks of various capacities, products and formats can be individually identified.

公开(公告)号：US20060104254A1

公开(公告)日：2006-05-18

申请号：US11274577

申请日：2005-11-15

Applicant: Won-Yong Shin ,  Young-Ho Jung ,  Chan-Soo Hwang ,  Yong-Hoon Lee ,  Jin-Gon Joung

Inventor： Won-Yong Shin ,  Young-Ho Jung ,  Chan-Soo Hwang ,  Yong-Hoon Lee ,  Jin-Gon Joung

IPC: H04J1/00

CPC classification number: H04L27/2657 ,  H04L27/2662 ,  H04L27/2676

Abstract: Disclosed is a method for acquiring synchronization in a mobile communication system using an Orthogonal Frequency Division Multiplexing (OFDM) scheme. The method includes modeling a power delay profile in time-varying frequency selective fading channel conditions by a specific function; detecting a log probability distribution function of a timing offset and a frequency offset in consideration of a correlation between a received signal and the received multi-path signal in the time-varying frequency selective fading channel conditions having the power delay profile modeled as the specific function; and estimating a timing offset and a frequency offset which maximize the log probability distribution function of the timing offset and the frequency offset.

公开(公告)号：US20050169162A1

公开(公告)日：2005-08-04

申请号：US11092761

申请日：2005-03-30

Applicant: Yong-Hoon Lee ,  Chul-Woo Lee ,  Chong-Sam Chung ,  Kun-Ho Cho

Inventor： Yong-Hoon Lee ,  Chul-Woo Lee ,  Chong-Sam Chung ,  Kun-Ho Cho

IPC: G11B7/24 ,  G11B7/007 ,  G11B7/09 ,  G11B7/26 ,  G11B11/105

CPC classification number: B82Y10/00 ,  G11B7/007 ,  G11B7/0938 ,  G11B7/263 ,  G11B11/10584 ,  Y10T428/21

Abstract: An optical disc includes a substrate having micro-embossments, in which flat portions referred to as lands, and track guides, referred to as hills, and which protrude from the surfaces of the flat portions are formed. A reflective layer is formed on the substrate, a dielectric layer is formed on the reflective layer, a recording layer is formed on the dielectric layer, and a protective layer is formed on the recording layer. Thus, the lands and hills on the substrate of the optical disc enable disc fabrication to more easily facilitate manufacturing of the optical disc. Accordingly, tracks of the disc can be narrowed, to thereby enhance a recording density of the optical disc.

Abstract translation: 光盘包括具有微压纹的基板，其中形成有称为凸台的平坦部分，以及被称为凸起部并且从平坦部分的表面突出的导轨。 在基板上形成反射层，在反射层上形成电介质层，在电介质层上形成记录层，在记录层上形成保护层。 因此，光盘的基板上的平台和丘丘能够使盘制造更容易地制造光盘。 因此，可以缩小盘的轨迹，从而提高光盘的记录密度。

公开(公告)号：US06788645B2

公开(公告)日：2004-09-07

申请号：US10077959

申请日：2002-02-20

Applicant: Han-kook Choi ,  Yong-hoon Lee ,  Chong-sam Chung ,  Heui-jong Kang

Inventor： Han-kook Choi ,  Yong-hoon Lee ,  Chong-sam Chung ,  Heui-jong Kang

IPC: G11B2303

CPC classification number: G11B23/0308

Abstract: A disk cartridge includes a case which contains a disk, and a shutter which opens/closes at least one opening formed in the case. The shutter is configured to be foldable around upper and lower surfaces of the case, and slides on the upper and lower surfaces of the case to open/close the opening. Since the shutter opens/closes the opening while being folded around the upper and lower surfaces of the case, a movable distance of the shutter for opening/closing the opening can be fully accommodated even though the size of the disk cartridge is reduced. In addition, applying the configuration of the shutter to a double-sided disk cartridge prevents an inflow of dust from entering into the double-sided disk cartridge since the shutter closes an opening, which is not in use, during a recording/reproducing operation.

Abstract translation: 磁盘盒包括一个包含一个磁盘的壳体和一个打开/关闭形成在壳体中的至少一个开口的挡板。 挡板被构造成围绕壳体的上表面和下表面可折叠，并且在壳体的上表面和下表面上滑动以打开/关闭开口。 由于快门在围绕壳体的上表面和下表面折叠的同时打开/关闭开口，所以即使减小了盘盒的尺寸，也可以完全容纳用于打开/关闭开口的快门的可移动距离。 此外，将快门的配置应用于双面盘盒防止灰尘进入双面盘盒，因为在记录/再现操作期间快门关闭不使用的开口。

公开(公告)号：US06724709B2

公开(公告)日：2004-04-20

申请号：US09987888

申请日：2001-11-16

Applicant: Han-kook Choi ,  Yong-hoon Lee

Inventor： Han-kook Choi ,  Yong-hoon Lee

IPC: G11B3302

CPC classification number: G11B23/0308 ,  G11B23/0317

Abstract: A disc cartridge including a case to form a space in which a disc is received, and a shutter to selectively open and shut an aperture formed on the case, wherein the aperture is formed only one side of the case. The size of the aperture of the disc cartridge can be reduced by half while the shutter is open, which will remarkably reduce pollution of the disc by foreign substances such as dust.

Abstract translation: 一种盘盒，其包括用于形成容纳盘的空间的壳体，以及用于选择性地打开和关闭形成在所述壳体上的孔的快门，其中所述孔只形成在所述壳体的一侧。 当快门打开时，盘盒的孔径可以减小一半，这将显着减少异物如灰尘对盘的污染。

公开(公告)号：US06724696B2

公开(公告)日：2004-04-20

申请号：US09938311

申请日：2001-08-24

Applicant: Seok-jung Kim ,  Yong-hoon Lee ,  Tae-yong Doh ,  Sun-mo Kim ,  Han-kook Choi

Inventor： Seok-jung Kim ,  Yong-hoon Lee ,  Tae-yong Doh ,  Sun-mo Kim ,  Han-kook Choi

IPC: G11B700

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

Abstract: A four-axial driving actuator for an optical pickup with improved bobbin dynamic characteristics, in which the winding starting ports for a focus coil, tracking coil, and tilt coil are separate from one another, and the winding end ports thereof are combined as a common ground. The four-axial driving actuator includes: a base; a holder fixed on the base; a bobbin to which an objective lens is fixed; spring wires connected between the bobbin and the holder; and a magnetic driving unit driving the bobbin in the focus, track, or tilt direction with a focus coil, a tracking coil, and a tilt coil, wherein the magnetic driving unit comprises a circuit unit including winding starting ports for the focus coil, tracking coil, and tilt coil, and a common ground port at which winding end ports for the focus coil, tracking coil, and tilt coil are grounded, and the circuit unit applies a voltage to the tracking coil, tracking coil, and tilt coil. In the four-axial driving actuator for an optical pickup, the bobbin and the holder are connected with only four wires serving as electric wires, so that moving characteristics of the bobbin are improved and the assembly time is reduced.

Abstract translation: 一种用于具有改进的筒管动态特性的光学拾取器的四轴驱动致动器，其中用于聚焦线圈，跟踪线圈和倾斜线圈的绕组起始端口彼此分离，并且其绕组端口被组合为公共 地面。 四轴驱动致动器包括：基座; 固定在基座上的支架; 固定有物镜的筒管; 连接在线轴和支架之间的弹簧线; 以及磁性驱动单元，其利用聚焦线圈，跟踪线圈和倾斜线圈以焦点，轨道或倾斜方向驱动线轴，其中所述磁性驱动单元包括电路单元，所述电路单元包括用于所述聚焦线圈的绕组起始端口，跟踪 线圈和倾斜线圈以及用于聚焦线圈，跟踪线圈和倾斜线圈的绕组端口接地的公共接地端口，并且电路单元向跟踪线圈，跟踪线圈和倾斜线圈施加电压。 在用于光学拾取器的四轴驱动致动器中，线轴和保持器仅用作电线的四根线连接，从而提高了线轴的移动特性，并减少了组装时间。

公开(公告)号：US06442124B1

公开(公告)日：2002-08-27

申请号：US09219342

申请日：1998-12-23

Applicant: Chong-sam Chung ,  Yong-hoon Lee ,  In-shik Park

Inventor： Chong-sam Chung ,  Yong-hoon Lee ,  In-shik Park

IPC: G11B7135

CPC classification number: G11B7/1374 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1381 ,  G11B2007/0006

Abstract: An optical pick-up apparatus for recording and reproducing information from recording media using a first, second, and third light source to emit light beams having various wavelengths corresponding to a first, second and third recording media, respectively. A dichroic beam splitter has a first, second, and third input surface for receiving the light beams emitted from the first, second and third light sources, respectively, and an output surface through which the light beams received through the input surfaces is transmitted toward the first, second, and third recording media. A converging device converges the light beams transmitted through the output surface of the dichroic beam splitter toward the first, second, and third recording media, and a photodetector receives light beams reflected from the first, second, and third recording media that has been transmitted through the dichroic beam splitter.

Abstract translation: 一种光拾取装置，用于使用第一，第二和第三光源从记录介质记录和再现信息，以分别发射具有对应于第一，第二和第三记录介质的各种波长的光束。 二向色光束分离器具有第一，第二和第三输入表面，用于分别接收从第一，第二和第三光源发射的光束，以及输出表面，通过输入表面接收的光束被朝向 第一，第二和第三记录媒体。 会聚装置将透射通过二向色分束器的输出表面的光束朝向第一，第二和第三记录介质收敛，并且光电检测器接收从第一，第二和第三记录介质反射的光束，其已被透射 二向色分束器。

公开(公告)号：US6114689A

公开(公告)日：2000-09-05

申请号：US299664

申请日：1999-04-27

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

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

IPC: G02B3/08 ,  G02B5/18 ,  G02B13/00 ,  G11B7/1374 ,  G02B3/00 ,  G11B7/12

CPC classification number: G11B7/1353 ,  G02B3/08 ,  G02B5/1876 ,  G11B7/122 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1384 ,  G11B7/1387

Abstract: An optical pickup device includes a light module, emitting light and receiving light reflected from a recording medium, and a solid immersion lens (SIL) member disposed in an optical path between the light module and the recording medium. The SIL has a planar surface facing the recording medium and a plurality of elliptically curved surfaces opposite the recording medium. The elliptically curved surfaces have different radii of curvature arranged symmetrical with respect to a central axis for focusing the incident light to form a tight beam spot on a recording plane of the recording medium.

Abstract translation: 一种光学拾取装置，包括发光和接收从记录介质反射的光的光模块和设置在光模块和记录介质之间的光路中的固体浸没透镜（SIL）部件。 SIL具有面向记录介质的平面和与记录介质相对的多个椭圆曲面。 椭圆曲面具有相对于中心轴对称布置的不同的曲率半径，用于聚焦入射光以在记录介质的记录平面上形成紧束光斑。

公开(公告)号：US5867088A

公开(公告)日：1999-02-02

申请号：US883170

申请日：1997-06-26

Applicant: Yong-Hoon Lee ,  Dong-Jin Shin

Inventor： Yong-Hoon Lee ,  Dong-Jin Shin

IPC: G01D1/12 ,  G06F1/06 ,  G06F7/02 ,  G06F17/16

CPC classification number: G06F9/30021 ,  G06F7/026

Abstract: A minimum value/maximum value extractor and method including: a multiplexer for outputting data and inverted data receiving from data lines depending on a maximum/minimum value selecting signal; a plurality of maximum value extracting parts for receiving the output of the multiplexer, a clock signal and a reset signal, the extracting parts outputting a first output which becomes the same signal state as that of the initially input data bits and maintains "0" regardless of subsequent data bits value once the input data bit becomes "0" until the reset signal is applied, and a second output which follows the first output value by delayed by two clock cycles; a maximum value/minimum value signal generator for outputting a value which is a NORed value of all inputs from the extracting parts as a minimum value or a value which is an inverted value of the NORed value of all inputs from the extracting parts as a maximum value; and a plurality of reset signal generators for generating the reset signal for resetting the first output of the extracting parts as an initial value if the two input signals are at the same state,wherein a data string in which the second output of each maximum value extracting part is "1" is the data string having the maximum/minimum values among a plurality of data bit strings and a value output through the maximum/minimum value signal generator becomes the maximum/minimum value.

Abstract translation: 一种最小值/最大值提取器和方法，包括：多路复用器，用于根据最大/最小值选择信号从数据线输出数据和反相数据; 多个最大值提取部分，用于接收多路复用器的输出，时钟信号和复位信号，提取部分输出与初始输入数据位相同的信号状态的第一输出，并保持“0”不变 一旦输入数据位变为“0”，直到复位信号被施加，并且第二个输出跟随第一个输出值延迟两个时钟周期; 最大值/最小值信号发生器，用于将来自提取部分的所有输入的NOR值作为最小值或作为所有输入的NOR值的反相值的值作为最大值输出 值; 以及多个复位信号发生器，用于在两个输入信号处于相同状态时产生用于将提取部分的第一输出复位为初始值的复位信号，其中，每个最大值提取的第二输出的数据串 部分是“1”是具有多个数据位串中的最大/最小值的数据串，并且通过最大/最小值信号发生器输出的值变为最大/最小值。