公开(公告)号：US20110211838A1

公开(公告)日：2011-09-01

申请号：US13042383

申请日：2011-03-07

申请人： Chang Hee LEE ,  Hyun Deok Kim

发明人： Chang Hee LEE ,  Hyun Deok Kim

IPC分类号： H04B10/20

CPC分类号： H04J14/02 ,  H01S5/0608 ,  H01S5/4006 ,  H04B10/502 ,  H04B10/506 ,  H04B10/564

摘要： The present invention discloses a low-cost light source for optical transmission systems and optical networks based on wavelength-division multiplexing (WDM) technology. A light source in accordance with the present invention is implemented by externally injecting a narrow-band incoherent light into a Fabry-Perot laser diode (F-P LD). After injection of narrow-band incoherent light, the output of F-P LD becomes wavelength-selective rather than multi-mode and the output wavelength of F-P LD coincide with the peak wavelength of the injected incoherent light.Multi-channel WDM light sources according to the present invention can be implemented using a single broadband incoherent light source and plurality of F-P LDs. An optical transmission system for upstream signal transmission in an passive optical network using the light source according the present invention is also disclosed.

摘要翻译： 本发明公开了一种基于波分复用（WDM）技术的光传输系统和光网络的低成本光源。 根据本发明的光源通过将窄带非相干光外部注入到法布里 - 珀罗激光二极管（F-P LD）中来实现。 在注入窄带非相干光后，F-P LD的输出变为波长选择性而不是多模，F-P LD的输出波长与注入的非相干光的峰值波长一致。 根据本发明的多通道WDM光源可以使用单个宽带非相干光源和多个F-P LD来实现。 还公开了一种在根据本发明的使用光源的无源光网络中用于上行信号传输的光传输系统。

公开(公告)号：US20110211839A1

公开(公告)日：2011-09-01

申请号：US13042386

申请日：2011-03-07

申请人： Chang Hee LEE ,  Hyun Deok Kim

发明人： Chang Hee LEE ,  Hyun Deok Kim

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H01S5/0608 ,  H01S5/4006 ,  H04B10/502 ,  H04B10/506 ,  H04B10/564

摘要： The present invention discloses a low-cost light source for optical transmission systems and optical networks based on wavelength-division multiplexing (WDM) technology. A light source in accordance with the present invention is implemented by externally injecting a narrow-band incoherent light into a Fabry-Perot laser diode (F-P LD). After injection of narrow-band incoherent light, the output of F-P LD becomes wavelength-selective rather than multi-mode and the output wavelength of F-P LD coincide with the peak wavelength of the injected incoherent light.Multi-channel WDM light sources according to the present invention can be implemented using a single broadband incoherent light source and plurality of F-P LDs. An optical transmission system for upstream signal transmission in an passive optical network using the light source according the present invention is also disclosed.

公开(公告)号：US20090198772A1

公开(公告)日：2009-08-06

申请号：US12363200

申请日：2009-01-30

申请人： Jung Hun KIM ,  Chang Hee LEE ,  Gwan Gyun KANG

发明人： Jung Hun KIM ,  Chang Hee LEE ,  Gwan Gyun KANG

IPC分类号： G06F15/16

CPC分类号： H04L67/1095 ,  H04L67/02

摘要： A data synchronization method for more than three networked devices including at least one client and one server for efficiently synchronizing data among multiple devices supporting a Synchronization Markup Language (SyncML) protocol is provided. The data synchronization method includes determining whether a data item indicated by synchronization information contained in a synchronization request message exists in a change log table of the server, when a server receives the synchronization request message sent by a first client, and updating the change log table by adding the data item indicated by the synchronization information and transmitting a synchronization request message containing a data identifier and the change log of the data item to a second client, if a data item indicated by the synchronization information does not exist, otherwise, ending data synchronization by transmitting a synchronization response message containing status information to the first client.

摘要翻译： 提供了一种用于包括至少一个客户端和一个服务器的三个以上网络设备的数据同步方法，用于在支持同步标记语言（SyncML）协议的多个设备之间有效同步数据。 数据同步方法包括：当服务器接收到由第一客户端发送的同步请求消息并更新更改日志表时，确定包含在同步请求消息中的同步信息指示的数据项是否存在于服务器的变更日志表中 通过添加由同步信息指示的数据项，并且如果不存在由同步信息指示的数据项，则向第二客户端发送包含数据标识符的同步请求消息和数据项的改变日志，否则结束数据 通过向第一客户端发送包含状态信息的同步响应消息来进行同步。

公开(公告)号：US20080163927A1

公开(公告)日：2008-07-10

申请号：US11781011

申请日：2007-07-20

申请人： Byung Hee SOHN ,  Sang Cheol PARK ,  Seok Gwang DOO ,  Ji Young KIM ,  Seung Ook ROH ,  Chang Hee LEE

发明人： Byung Hee SOHN ,  Sang Cheol PARK ,  Seok Gwang DOO ,  Ji Young KIM ,  Seung Ook ROH ,  Chang Hee LEE

IPC分类号： H01L31/04 ,  H01L31/02

CPC分类号： H01L51/4253 ,  B82Y10/00 ,  H01L51/0026 ,  H01L51/0036 ,  H01L51/0037 ,  H01L51/0047 ,  H01L51/424 ,  H01L2251/308 ,  Y02E10/549

摘要： Disclosed herein are a polymer solar cell, comprising a substrate, a first electrode, a hole injection layer, a photoactive layer, and a second electrode, characterized in that an electron-accepting layer is formed between the photoactive layer and the second electrode, and a method of manufacturing the polymer solar cell. The polymer solar cell comprises an electron-accepting layer between the photoactive layer and the second electrode, thereby assuring excellent power conversion efficiency. Furthermore, high power conversion efficiency can also be attained in a low-temperature thermal annealing process.

摘要翻译： 本文公开了一种聚合物太阳能电池，其包括基板，第一电极，空穴注入层，光活性层和第二电极，其特征在于，在所述光敏层和所述第二电极之间形成电子接受层，以及 聚合物太阳能电池的制造方法。 聚合物太阳能电池包括在光敏层和第二电极之间的电子接受层，从而确保优异的电力转换效率。 此外，在低温热退火工艺中也可以实现高功率转换效率。

公开(公告)号：US20110101884A1

公开(公告)日：2011-05-05

申请号：US12838077

申请日：2010-07-16

申请人： Jong Duck KIM ,  Chang Hee LEE

发明人： Jong Duck KIM ,  Chang Hee LEE

IPC分类号： H05B41/36

CPC分类号： H02M3/155 ,  H02M2001/007 ,  H05B33/0815 ,  H05B33/0851

摘要： There is provided a multi-stage power supply. A multi-stage power supply according to an aspect of the invention may include: a voltage converter circuit section including a plurality of first to n-th DC/DC converters connected in series between an input terminal and an output terminal, in order to supply a DC driving voltage to an LED array having a plurality of LEDs therein; a voltage detection section detecting an output voltage from the voltage converter circuit section; and a PWM control section generating a PWM control signal on the basis of a first detection voltage from the voltage detection section, a second detection voltage obtained by detecting current flowing through the LED array, and a third detection voltage obtained by detecting a current waveform flowing through an internal switch of the n-th DC/DC converter, and supplying the PWM control signal to each of the first through n-th DC/DC converters.

摘要翻译： 提供了多级电源。 根据本发明的一个方面的多级电源可以包括：电压转换器电路部分，包括串联连接在输入端子和输出端子之间的多个第一至第n个DC / DC转换器，以便提供 向其中具有多个LED的LED阵列的DC驱动电压; 检测来自所述电压转换电路部的输出电压的电压检测部; 以及PWM控制部，其基于来自电压检测部的第一检测电压生成PWM控制信号，通过检测流过LED阵列的电流而获得的第二检测电压，以及通过检测流过的电流波形而获得的第三检测电压 通过第n个DC / DC转换器的内部开关，并将PWM控制信号提供给第一至第n个DC / DC转换器。