公开(公告)号：US08014360B2

公开(公告)日：2011-09-06

申请号：US11985769

申请日：2007-11-16

Applicant: Yu-Seok Kim ,  In-Soo Hwang ,  Jin-Gon Joung ,  Yong-Hoon Lee ,  Kyung-Min Kim ,  Yong-Up Jang

Inventor： Yu-Seok Kim ,  In-Soo Hwang ,  Jin-Gon Joung ,  Yong-Hoon Lee ,  Kyung-Min Kim ,  Yong-Up Jang

IPC: H04W4/00 ,  H04J3/00 ,  H04B7/212

CPC classification number: H04B7/0452 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0643 ,  H04B7/065

Abstract: An apparatus and method for performing sequential scheduling in a multiple-input, multiple-output (MIMO) system is provided. The method includes the steps of: selecting a user which reports the greatest partial feedback information among a plurality of pieces of partial feedback information of all users in an initialization operation, and requesting channel feedback information to the selected user; and broadcasting the channel feedback information of the selected user to remaining unselected users upon receiving the channel feedback information from the selected user. Accordingly, a maximum capacity can be obtained by using only selective channel feedback information without having to feed back channel state information of all users.

Abstract translation: 提供了一种用于在多输入多输出（MIMO）系统中执行顺序调度的装置和方法。 该方法包括以下步骤：在初始化操作中选择在所有用户的多条部分反馈信息中报告最大部分反馈信息的用户，并向所选择的用户请求信道反馈信息; 以及在从所选择的用户接收到信道反馈信息时，将所选择的用户的频道反馈信息广播到剩余的未选择的用户。 因此，通过仅使用选择性信道反馈信息，而不必反馈所有用户的信道状态信息，可以获得最大容量。

公开(公告)号：US20100135701A1

公开(公告)日：2010-06-03

申请号：US12617281

申请日：2009-11-12

Applicant: Jong Woo LEE ,  Yong Hoon Lee

Inventor： Jong Woo LEE ,  Yong Hoon Lee

IPC: G03G15/08

CPC classification number: G03G15/0812 ,  G03G2221/183

Abstract: A developing unit provided in an image forming apparatus includes a regulating member that improves developer layer regulation performance. The developing unit is configured to feed developer to a photoconductor, on which an electrostatic latent image is formed, to form an image. The regulating member of the developing unit includes a bending portion contacting an outer peripheral surface of a developing device provided in a frame of the developing unit. The width of the regulating member is variable to increase rearward from the bending portion. The regulating member may further include an extension portion extending from the bending portion. Sealing members may be attached to both ends of the frame of the developing unit so as to contact the respective ends of the bending portion.

Abstract translation: 设置在图像形成装置中的显影单元包括改善显影剂层调节性能的调节构件。 显影单元构造成将显影剂供给到其上形成有静电潜像的感光体，以形成图像。 显影单元的调节构件包括与设置在显影单元的框架中的显影装置的外周表面接触的弯曲部分。 调节构件的宽度可以从弯曲部向后方增大。 调节构件还可以包括从弯曲部分延伸的延伸部分。 密封构件可以附接到显影单元的框架的两端，以便与弯曲部分的各个端部接触。

公开(公告)号：US20090016178A1

公开(公告)日：2009-01-15

申请号：US12235832

申请日：2008-09-23

Applicant: Seok-jung Kim ,  Yong-hoon Lee ,  Sun-mo Kim

Inventor： Seok-jung Kim ,  Yong-hoon Lee ,  Sun-mo Kim

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

Abstract: An actuator used with an optical pickup includes: a base on which a holder is fixed; a lens holder in which a plurality of installation holes are formed such that a plurality of objective lenses to record and/or reproduce optical discs having different recording densities are installed at different heights; a support member, which movably supports the lens holder, having one end coupled to the lens holder and the other end coupled to the holder; and a magnetic circuit which drives the lens holder in focusing and tracking directions. The plurality of installation holes include a first installation hole in which a first objective lens for at least one type of low density optical disc is installed, and a second installation hole in which a second objective lens for a higher density optical disc than the low density optical disc is installed. When a working distance of the first objective lens for the low density optical disc installed in the first installation hole is represented as WD1, and a working distance of the second objective lens for the high density optical disc installed in the second installation hole is represented as WD2, the first and second installation holes are provided so that the first and second objective lenses are installed to satisfy the Equation: WD1≧WD2, a separation distance between the optical disc and the second objective lens=WD2+α where, α=|WD1−WD2|×(0.1˜1.0). The second installation hole is located in a more outer circumference of the optical disc than the first installation hole.

Abstract translation: 与光学拾取器一起使用的致动器包括：固定有保持器的基座; 其中形成多个安装孔的透镜保持器，使得用于记录和/或再现具有不同记录密度的光盘的多个物镜安装在不同的高度; 支撑构件，其可移动地支撑透镜保持器，其一端联接到透镜保持器，另一端联接到保持器; 以及在聚焦和跟踪方向上驱动透镜架的磁路。 多个安装孔包括：第一安装孔，其中安装有用于至少一种类型的低密度光盘的第一物镜;以及第二安装孔，其中用于高密度光盘的第二物镜低于低密度 安装光盘。 当安装在第一安装孔中的低密度光盘的第一物镜的工作距离表示为WD1时，将安装在第二安装孔中的高密度光盘的第二物镜的工作距离表示为 WD2，第一和第二安装孔被设置成使得第一和第二物镜被安装以满足等式：<？in-line-formula description =“In-line Formulas”end =“lead”？> WD1> = WD2，<？in-line-formula description =“In-line Formulas”end =“tail”？>光盘与第二物镜之间的间隔距离= WD2 + alpha其中，α= | WD1-WD2 | x （0.1〜1.0）。 第二安装孔位于光盘的比第一安装孔更外侧的圆周上。

公开(公告)号：US07372830B2

公开(公告)日：2008-05-13

申请号：US11130484

申请日：2005-05-17

Applicant: Young-Ho Jung ,  In-Soon Park ,  Seung-Hoon Nam ,  In-Hyoung Kim ,  Yong-Hoon Lee

Inventor： Young-Ho Jung ,  In-Soon Park ,  Seung-Hoon Nam ,  In-Hyoung Kim ,  Yong-Hoon Lee

IPC: H04Q7/00 ,  H04Q7/28 ,  H04Q7/24 ,  H04B7/204 ,  H04B7/208 ,  H04B7/02 ,  H04B7/10 ,  H04M1/00

CPC classification number: H04L1/06 ,  H04L1/0003 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0096

Abstract: A resource allocation method in a multiuser-multiple-input multiple-output/orthogonal frequency division multiple access (MIMO/OFDMA) system. In the multiuser-MIMO/OFDMA system feedback information is received from terminals. A channel gain and a transmission rate for each user are determined using the feedback information. An average channel gain for each user is computed according to the channel gain. The average number of bits for each user is determined according to the average channel gain. The number of subchannels for each user is computed according to the average number of bits for each user. At least one subchannel is allocated to each user according to the number of subchannels for each user. A modulation scheme for each of the at least one subchannel is determined. The resource allocation method adaptively allocates subchannels and bits according to channel environment, thereby considerably improving frequency use efficiency as well as a power gain.

Abstract translation: 一种多用户多输入多输出/正交频分多址（MIMO / OFDMA）系统中的资源分配方法。 在多用户MIMO / OFDMA系统中，从终端接收反馈信息。 使用反馈信息确定每个用户的信道增益和传输速率。 根据通道增益计算每个用户的平均通道增益。 根据平均通道增益确定每个用户的平均位数。 根据每个用户的平均位数来计算每个用户的子信道数量。 根据每个用户的子信道数量，至少一个子信道被分配给每个用户。 确定对于至少一个子信道中的每一个的调制方案。 资源分配方法根据信道环境自适应地分配子信道和比特，从而显着提高频率使用效率以及功率增益。

公开(公告)号：US07089574B2

公开(公告)日：2006-08-08

申请号：US10314416

申请日：2002-12-09

Applicant: Han-kook Choi ,  Yong-hoon Lee ,  Hong-kyun Yim ,  Jae-yong Eum

Inventor： Han-kook Choi ,  Yong-hoon Lee ,  Hong-kyun Yim ,  Jae-yong Eum

IPC: G11B23/02

CPC classification number: G11B23/0317 ,  G11B23/0308

Abstract: A disk cartridge includes a case which receives a disk thereon, a cover which is installed on the case and includes an opening, and a shutter which is movably installed in the case, in a lower direction of the disk, to open and close an aperture formed on the case. The disk cartridge has guide holes formed on the case along a trace of the shutter, and support members formed on the shutter. The support members are guided along the guide holes while having ends thereof interfering with peripherals of the guide holes. Therefore, since the peripherals of the guide holes interfere with the ends of the support members, the shutter is prevented from being deformed even where an external force is applied to the shutter through the aperture, in a closed state of the shutter.

公开(公告)号：US20060140217A1

公开(公告)日：2006-06-29

申请号：US11291066

申请日：2005-11-30

Applicant: Young-Ho Jung ,  Jae-Hak Chung ,  Woo-Seok Nam ,  Jae-Yeun Yun ,  Yong-Hoon Lee

Inventor： Young-Ho Jung ,  Jae-Hak Chung ,  Woo-Seok Nam ,  Jae-Yeun Yun ,  Yong-Hoon Lee

IPC: H04J3/22

CPC classification number: H04L27/2601 ,  H04W16/30 ,  H04W72/00 ,  H04W72/048

Abstract: Disclosed is a method for adaptively allocating frequency resources in a communication system using an orthogonal frequency division multiple access scheme. The method for allocating frequency resources in the communication system that includes a plurality of cells using an identical frequency band includes the steps of dividing a frequency band used in the communication system into sub-frequency bands corresponding to a number of cells, and allocating one of the sub-frequency bands to each of mobile subscriber stations exiting in the cells according to positions of the mobile subscriber stations, thereby increasing the degree of the freedom for frequency resource allocation and minimizing ICI.

Abstract translation: 公开了一种使用正交频分多址方案在通信系统中自适应地分配频率资源的方法。 在包括使用相同频带的多个小区的通信系统中分配频率资源的方法包括以下步骤：将在通信系统中使用的频带划分为与多个小区相对应的子频带，并且分配 根据移动用户站的位置将小区中的每个移动用户台的子频带，从而增加频率资源分配的自由度并使ICI最小化。

公开(公告)号：US07039094B2

公开(公告)日：2006-05-02

申请号：US10025797

申请日：2001-12-26

Applicant: Seong Rag Kim ,  Jinho Choi ,  Young-Ho Jung ,  Seung Chul Hong ,  Yong Hoon Lee

Inventor： Seong Rag Kim ,  Jinho Choi ,  Young-Ho Jung ,  Seung Chul Hong ,  Yong Hoon Lee

IPC: H04B1/69

CPC classification number: H04B1/71055 ,  H04B1/7117 ,  H04B1/712

Abstract: An adaptive RAKE receiving apparatus is constrained with at least one constraint for use in a mobile communication system. The apparatus includes an input signal generator for generating a complex received signal by gathering multi-path components during a corresponding transmitting signature; adaptive filters for filtering the complex received signal based on a tab weight that is adjusted at a predetermined period; channel estimators for estimating a phase component and an amplitude component of a particular user channel by using the filtered signals to generate channel estimating result signals; a signal recovering unit for recovering an original signal, which was transmitted from a particular user, by combining the filtered signals for all multi-path components and the channel estimating result signals; selecting unit for selecting one between a predetermined trained data signal and the recovered signal from the signal recovering unit; a reference signal generator for generating a reference signal by using the selected signal and the channel estimation result signal; an error calculator for comparing the filtered received signal with the reference signal to calculate error between these compared two signals; and a tap coefficient adjuster for adjusting tap coefficients of the adaptive filtering unit based on MMSE (Minimum Mean Square Error) criterion with at least one constraint.

公开(公告)号：US20060056446A1

公开(公告)日：2006-03-16

申请号：US11222746

申请日：2005-09-12

Applicant: Hak-goo Lee ,  Yong-hoon Lee ,  Young-keun Kim ,  Pyung-soo Kim

Inventor： Hak-goo Lee ,  Yong-hoon Lee ,  Young-keun Kim ,  Pyung-soo Kim

IPC: H04J3/22 ,  H04J3/16

CPC classification number: H04L29/12009 ,  H04L29/06 ,  H04L29/12018 ,  H04L29/12839 ,  H04L49/201 ,  H04L49/3009 ,  H04L49/351 ,  H04L61/10 ,  H04L61/6022 ,  H04L69/32

Abstract: Provided is a communication adapter switching method and apparatus in a system having a plurality of communication adapters. The method includes: setting the addresses of the plurality of communication adapters equal to the address of the first of the plurality of communication adapters; setting a packet filtering mode of the communication adapters other than the first communication adapter to a mode in which all packets are accepted; and switching from one of the communication adapters to another when the one communication adapter is disconnected during communication. Accordingly, seamless handoff from the wired LAN to the wireless LAN is possible, since the TCP/IP session is maintained with the same IP address.

Abstract translation: 提供一种具有多个通信适配器的系统中的通信适配器切换方法和装置。 该方法包括：将多个通信适配器的地址设置为等于多个通信适配器中第一个的地址; 将除第一通信适配器之外的通信适配器的分组过滤模式设置为接受所有分组的模式; 并且当在通信期间断开一个通信适配器时，从一个通信适配器切换到另一个通信适配器。 因此，可以从有线LAN到无线LAN的无缝切换，因为TCP / IP会话被维持相同的IP地址。

公开(公告)号：US20060018415A1

公开(公告)日：2006-01-26

申请号：US11181147

申请日：2005-07-14

Applicant: Young-Ho Jung ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Jin-Gon Joung ,  Woo-Seok Nam ,  Woo-Hyuk Chang

Inventor： Young-Ho Jung ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Jin-Gon Joung ,  Woo-Seok Nam ,  Woo-Hyuk Chang

IPC: H04B7/10

CPC classification number: H04B7/0639 ,  H04B7/0417 ,  H04B7/0669 ,  H04B7/0691 ,  H04B7/0697 ,  H04L1/0656 ,  H04L1/0687

Abstract: In a method for feeding back combination information of transmitted signals in a multiple-input multiple-output (MIMO) system using a multiple space-time block coding technique, mean square error values are computed in relation to the combination information pieces of the transmitted signals. An index of a combination having a minimum mean square error value from among the mean square error values is fed back.

公开(公告)号：US20050243939A1

公开(公告)日：2005-11-03

申请号：US11078157

申请日：2005-03-11

Applicant: Young-Ho Jung ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Hong-Sun Park

Inventor： Young-Ho Jung ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Hong-Sun Park

IPC: H04J11/00 ,  H04L27/26 ,  H04K1/10

CPC classification number: H04L5/0048 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232

Abstract: A pilot designing method in an uplink OFDMA system is provided. In the uplink OFDMA system, communications are carried out in a frame divided into time-frequency lattices, and each time-frequency lattice includes a plurality of data symbol periods and a plurality of pilot symbol periods intermittently arranged with respect to the data symbol periods. The frame is divided into a plurality of blocks. The blocks are allocated to the terminals. A predetermined allocated pilot time-frequency lattice is shared between adjacent terminals.

Abstract translation: 提供了一种上行链路OFDMA系统中的导频设计方法。 在上行链路OFDMA系统中，以划分为时频格点的帧进行通信，并且每个时间频率格子包括相对于数据符号周期间歇地布置的多个数据符号周期和多个导频符号周期。 该帧被分成多个块。 这些块分配给终端。 在相邻的终端之间共享预定的分配的导频时间频率点阵。