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    • 4. 发明申请
    • WAVELENGTH TUNABLE OPTICAL INTERLEAVER
    • 波长可调光学交互器
    • US20100142889A1
    • 2010-06-10
    • US12544196
    • 2009-08-19
    • Oh-Kee KWONYongsoon BAEKChul-Wook LEEDong-Hun LEEJong-Hoi KIMEundeok SIM
    • Oh-Kee KWONYongsoon BAEKChul-Wook LEEDong-Hun LEEJong-Hoi KIMEundeok SIM
    • G02B6/28G02B6/26G02B6/42
    • G02B6/12007G02B6/12004G02B6/29394G02B2006/12147G02B2006/12159
    • 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.
    • 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。
    • 8. 发明申请
    • SYSTEM AND METHOD FOR MANAGING RESOURCE IN COMMUNICATION SYSTEM
    • 用于管理通信系统资源的系统和方法
    • US20120201208A1
    • 2012-08-09
    • US13339697
    • 2011-12-29
    • Hyunduk KANGDong-Hun LEE
    • Hyunduk KANGDong-Hun LEE
    • H04W72/04
    • H04W16/14H04W72/0453
    • A system for managing resources in a communication system including a plurality of systems, which do not have a permission for a first frequency band, includes a plurality of coexistence managers configured to, when a frequency band available for the plurality of systems is searched from the first frequency band, manage the plurality of systems for coexistence and frequency sharing of the plurality of systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the plurality of systems and information of the coexistence manager; and a coexistence discovery and information server configured to support control of the coexistence manager over the plurality of systems, wherein predetermined messages are transmitted and received among the coexistence discovery and information server, the plurality of coexistence managers and the coexistence enabler to discover neighbor systems among the plurality of systems.
    • 一种用于管理包括不具有第一频带许可的多个系统的通信系统中的资源的系统,包括多个共存管理器,其被配置为当从所述多个系统中搜索可用于所述多个系统的频带时 第一频带,管理用于可用频带中的多个系统的共存和频率共享的多个系统; 配置为发送和接收所述多个系统的信息和共存管理器的信息的共存使能器; 以及共存发现和信息服务器,其被配置为支持对所述多个系统的所述共存管理器的控制,其中在所述共存发现和信息服务器之间发送和接收预定消息,所述多个共存管理器和所述共存使能器在以下之间发现相邻系统 多个系统。
    • 9. 发明申请
    • LED LIGHT EMITTING DEVICE AND METHOD OF DRIVING THE SAME
    • LED发光装置及其驱动方法
    • US20110001433A1
    • 2011-01-06
    • US12825635
    • 2010-06-29
    • Dong-Hun LEEKyung-Goo LeeHong-Gyu HanJung-Won KimDong-Hee Kim
    • Dong-Hun LEEKyung-Goo LeeHong-Gyu HanJung-Won KimDong-Hee Kim
    • H05B37/02
    • H05B33/0815H05B33/0827Y02B20/347
    • 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.
    • 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。