公开(公告)号：US20110001433A1

公开(公告)日：2011-01-06

申请号：US12825635

申请日：2010-06-29

Applicant: Dong-Hun LEE ,  Kyung-Goo Lee ,  Hong-Gyu Han ,  Jung-Won Kim ,  Dong-Hee Kim

Inventor： Dong-Hun LEE ,  Kyung-Goo Lee ,  Hong-Gyu Han ,  Jung-Won Kim ,  Dong-Hee Kim

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/0827 ,  Y02B20/347

Abstract: An LED light emitting device and a method of driving the same are provided, and technology that can uniformly sustain the magnitude of a channel current flowing to a plurality of LED channels is disclosed. The LED light emitting device includes: a plurality of LED channels that are formed with a plurality of LED elements that are continuously connected in series; and a constant current source that controls each channel current flowing to the plurality of LED channels according to a predetermined channel reference current to be a predetermined setting channel current, wherein the constant current source includes a plurality of operating amplifiers that control the magnitude of each of the channel currents, and a feedback voltage generating according to a predetermined offset reference current is input to a second input terminal of an operating amplifier for an offset setting period that sets an offset voltage of the plurality of operating amplifiers, a reference voltage generating according to a channel reference current is input to a first input terminal of the operating amplifier, and an offset voltage of each of the plurality of operating amplifiers is set so that an actual channel current may be identical to a predetermined setting channel current.

Abstract translation: 提供了一种LED发光器件及其驱动方法，并且公开了能够均匀地维持流向多个LED通道的沟道电流的大小的技术。 LED发光装置包括：多个LED通道，其形成有连续串联连接的多个LED元件; 以及恒定电流源，其根据预定的通道参考电流来控制流向所述多个LED通道的每个通道电流为预定设定通道电流，其中所述恒流源包括多个运算放大器，所述多个运算放大器控制每个 根据预定的偏移参考电流产生的通道电流和反馈电压被输入到运算放大器的第二输入端，用于设置多个运算放大器的偏移电压的偏移设置周期，根据 通道参考电流被输入到运算放大器的第一输入端，并且设置多个运算放大器中的每一个的偏移电压，使得实际的通道电流可以与预定的设定通道电流相同。

公开(公告)号：US20130266263A1

公开(公告)日：2013-10-10

申请号：US13618353

申请日：2012-09-14

Applicant: Oh Kee KWON ,  Chul-Wook LEE ,  Dong-Hun LEE ,  Young Ahn LEEM ,  Young-Tak HAN ,  Yongsoon BAEK ,  Yun C. CHUNG

Inventor： Oh Kee KWON ,  Chul-Wook LEE ,  Dong-Hun LEE ,  Young Ahn LEEM ,  Young-Tak HAN ,  Yongsoon BAEK ,  Yun C. CHUNG

IPC: G02B6/26 ,  H01P11/00

CPC classification number: G02B6/1228 ,  G02B6/305

Abstract: Provided are a spot size converter and a method of manufacturing the spot size converter. The method includes stacking a lower clad layer, a core layer, and a first upper clad layer on a substrate, tapering the first upper clad layer and the core layer in a first direction on a side of the substrate, forming a waveguide layer on the first upper clad layer and the lower clad layer, and etching the waveguide layer, the first upper clad layer, the core layer, and the lower clad layer such that the waveguide layer is wider than a tapered portion of the core layer on the side of the substrate and has the same width as that of the core layer on another side of the substrate.

Abstract translation: 提供了点尺寸转换器和制造光斑尺寸转换器的方法。 该方法包括在基板上层叠下包层，芯层和第一上包覆层，使第一上包覆层和芯层在衬底侧沿第一方向逐渐变细，在衬底的一侧上形成波导层 第一上包覆层和下包层，并且蚀刻波导层，第一上包层，芯层和下包层，使得波导层比芯层的锥形部分宽 并且具有与基板的另一侧上的芯层的宽度相同的宽度。

公开(公告)号：US20120288434A1

公开(公告)日：2012-11-15

申请号：US13461241

申请日：2012-05-01

Applicant: Kap-Seung YANG ,  Sung-Ho LEE ,  Hyang-Hoon CHAE ,  Dong-Hun LEE

Inventor： Kap-Seung YANG ,  Sung-Ho LEE ,  Hyang-Hoon CHAE ,  Dong-Hun LEE

IPC: C01B31/02 ,  C08L33/20

CPC classification number: D01F9/225 ,  C08L33/18 ,  C08L2203/12

Abstract: Disclosed therein is a method for preparing a polyacrylonitrile-based polymer for preparation of carbon fiber having a melting point controlled by selecting an optimal energy of microwave, and a method for preparing a carbon fiber through melt spinning using the preparation method for polyacrylonitrile-based polymer. The present invention uses microwave to control the properties of the polyacrylonitrile-based polymer in a simplified way and prepare the polymer optimized for preparation of carbon fiber precursor through melt spinning for a short polymerization time, and provides a means for mass production of the polyacrylonitrile-based polymer being suitable for melt spinning at a temperature lower than the stabilization temperature and acquiring properties adequate to preparation of carbon fiber through stabilization. Hence, the present invention is expected to contribute to mass production of high-performance carbon fibers at reduced cost.

Abstract translation: 其中公开了一种制备通过选择微波最佳能量来控制熔点的碳纤维的聚丙烯腈系聚合物的制造方法以及使用聚丙烯腈类聚合物的制备方法通过熔融纺丝制备碳纤维的方法 。 本发明使用微波以简单的方式控制聚丙烯腈类聚合物的性能，并通过熔融纺丝制备优化用于制备碳纤维前体的聚合物，聚合时间短，并提供了用于大量生产聚丙烯腈 - 基于聚合物适合于在低于稳定温度的温度下熔融纺丝，并通过稳定性获得足以制备碳纤维的性能。 因此，本发明预期有助于以低成本大量生产高性能碳纤维。

公开(公告)号：US20120124228A1

公开(公告)日：2012-05-17

申请号：US13293614

申请日：2011-11-10

Applicant: Cho-Rong YU ,  Hwa-Shin MOON ,  Dong-Hun LEE ,  Jae-Chan SHIM ,  Hwa-Suk KIM ,  Sang-Kwon KIM ,  Kang-Suk HUH ,  Kee-Seong CHO

Inventor： Cho-Rong YU ,  Hwa-Shin MOON ,  Dong-Hun LEE ,  Jae-Chan SHIM ,  Hwa-Suk KIM ,  Sang-Kwon KIM ,  Kang-Suk HUH ,  Kee-Seong CHO

IPC: G06F15/16

CPC classification number: H04L65/1016 ,  H04L65/1006 ,  H04L65/1069 ,  H04L65/1093

Abstract: A multimedia session transfer control system and method are provided. The multimedia session transfer control system includes a service transfer control server configured to issue a session transfer message including information on transfer of a session when the session between a receiving terminal and a transmitting terminal is transferred; and a service providing server configured to receive the session transfer message, identify a multimedia service corresponding to the session transfer, change an execution rule for the multimedia service, and provide the multimedia service whose execution rule has been changed from the transmitting terminal to the receiving terminal.

Abstract translation: 提供了多媒体会话传送控制系统和方法。 多媒体会话传送控制系统包括：服务传输控制服务器，被配置为当传送接收终端和发送终端之间的会话时，发出包括关于会话传送的信息的会话传送消息; 以及服务提供服务器，被配置为接收所述会话传送消息，识别与所述会话传送相对应的多媒体服务，改变所述多媒体服务的执行规则，并且将执行规则已经从所述发送终端改变为接收的多媒体服务 终奌站。

公开(公告)号：US20100142889A1

公开(公告)日：2010-06-10

申请号：US12544196

申请日：2009-08-19

Applicant: Oh-Kee KWON ,  Yongsoon BAEK ,  Chul-Wook LEE ,  Dong-Hun LEE ,  Jong-Hoi KIM ,  Eundeok SIM

Inventor： Oh-Kee KWON ,  Yongsoon BAEK ,  Chul-Wook LEE ,  Dong-Hun LEE ,  Jong-Hoi KIM ,  Eundeok SIM

IPC: G02B6/28 ,  G02B6/26 ,  G02B6/42

CPC classification number: G02B6/12007 ,  G02B6/12004 ,  G02B6/29394 ,  G02B2006/12147 ,  G02B2006/12159

Abstract: An optical interleaver of a wavelength division multiplexing (WDM) system includes an optical coupler, first and second waveguides, a high reflection mirror, and first and second phase shifters. The coupler divides an input optical signal. The first waveguide branches off from the coupler in a first direction. The second waveguide branches off from the coupler in a second direction for providing an optical path different from that provided by the first waveguide. The high reflection mirror is disposed at an end of the first waveguide for reflecting a first optical signal incident onto the first waveguide. The first phase shifter is disposed at an end of the second waveguide for multiple-reflecting a second optical signal incident onto the second waveguide. The second phase shifter is disposed at the first or second waveguide for adjusting an optical path difference between the first and second waveguides by varying its refractive index.

Abstract translation: 波分复用（WDM）系统的光交织器包括光耦合器，第一和第二波导，高反射镜以及第一和第二移相器。 耦合器划分输入光信号。 第一波导在第一方向上从耦合器分支。 第二波导在第二方向上从耦合器分支，以提供与由第一波导提供的光路不同的光路。 高反射镜设置在第一波导的端部，用于反射入射到第一波导上的第一光信号。 第一移相器设置在第二波导的端部，用于多次反射入射到第二波导上的第二光信号。 第二移相器设置在第一或第二波导处，用于通过改变其折射率来调节第一和第二波导之间的光程差。

公开(公告)号：US20150028190A1

公开(公告)日：2015-01-29

申请号：US14335309

申请日：2014-07-18

Applicant: Ji-Hun SHIN ,  Chang-Eun KANG ,  Won-Ho CHOI ,  Dong-Hun LEE

Inventor： Ji-Hun SHIN ,  Chang-Eun KANG ,  Won-Ho CHOI ,  Dong-Hun LEE

IPC: H03M1/00 ,  H04N5/378 ,  H03K3/356 ,  H03K23/00 ,  H03M1/12

CPC classification number: H04N5/378 ,  H03K21/38 ,  H03K23/667 ,  H03M1/123 ,  H03M1/14 ,  H03M1/56 ,  H04N5/3575 ,  H04N5/3696 ,  H04N5/3745 ,  H04N13/243 ,  H04N13/254 ,  H04N13/271 ,  H04N2213/001

Abstract: A counter circuit includes a first counter and a second counter. The first counter is configured to count a first counter clock signal which toggles with a first frequency to generate upper (N−M)-bit signals of N-bit counter output signals, in response to a first counting enable signal based on a first comparison signal during a coarse counting interval. N and M are natural numbers, N is greater than M, and M is greater than or equal to 3. The second counter is configured to count a second counter clock signal which toggles with a second frequency which is higher than the first frequency to generate lower M-bit signals of the N-bit counter output signals, in response to a second counting enable signal based on the first comparison signal and a second comparison signal during a fine counting interval which follows the coarse counting interval.

Abstract translation: 计数器电路包括第一计数器和第二计数器。 第一计数器被配置为响应于基于第一比较的第一计数使能信号来计数与第一频率切换的第一计数器时钟信号，以产生N位计数器输出信号的上（N-M）位信号 信号在粗计数间隔期间。 N和M是自然数，N大于M，M大于或等于3.第二计数器被配置为对第二计数器时钟信号进行计数，第二计数器时钟信号与第二频率相交换，第二频率高于第一频率以产生 响应于基于第一比较信号的第二计数使能信号和在粗计数间隔之后的精细计数间隔期间的第二比较信号，N比特计数器输出信号的较低M比特信号。

公开(公告)号：US20120147907A1

公开(公告)日：2012-06-14

申请号：US13225609

申请日：2011-09-06

Applicant: Namje KIM ,  Kyung Hyun PARK ,  Young Ahn LEEM ,  Hyunsung KO ,  Sang-Pil HAN ,  Chul-Wook LEE ,  Dong-Hun LEE

Inventor： Namje KIM ,  Kyung Hyun PARK ,  Young Ahn LEEM ,  Hyunsung KO ,  Sang-Pil HAN ,  Chul-Wook LEE ,  Dong-Hun LEE

IPC: H01S3/30

CPC classification number: H01S5/06258 ,  G02F1/3534 ,  G02F2/002 ,  G02F2203/13 ,  H01S5/026 ,  H01S5/1092 ,  H01S5/1215 ,  H01S5/1237 ,  H01S5/4087

Abstract: Disclosed is a terahertz wave generator which includes a dual mode semiconductor laser device configured to generate at least two laser lights having different wavelengths and to beat the generated laser lights; and a photo mixer formed on the same chip as the dual mode semiconductor laser device and to generate a continuous terahertz wave when excited by the beat laser light.

Abstract translation: 公开了一种太赫兹波发生器，其包括双模式半导体激光器装置，其被配置为产生具有不同波长的至少两个激光并且击发所产生的激光; 以及形成在与双模半导体激光器件相同的芯片上的光混合器，并且当由拍子激光激发时产生连续的太赫兹波。