公开(公告)号：US20050185256A1

公开(公告)日：2005-08-25

申请号：US10888727

申请日：2004-07-09

申请人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： G02B6/42 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094

CPC分类号： H01S3/06795 ,  H01S3/06758 ,  H01S3/094003

摘要： Disclosed is a broadband light source with a direct pumping structure including: a first gain medium for generating an amplified spontaneous emission; and a first pump light source connected in series to the first gain medium, for outputting a first pump light provided in the first gain medium.

摘要翻译： 公开了一种具有直接泵浦结构的宽带光源，包括：用于产生放大的自发发射的第一增益介质; 以及与第一增益介质串联连接的第一泵浦光源，用于输出设置在第一增益介质中的第一泵浦光。

公开(公告)号：US20050105169A1

公开(公告)日：2005-05-19

申请号：US10854347

申请日：2004-05-26

申请人： Seong-Taek Hwang ,  Chang-Sup Shim ,  Yun-Je Oh

发明人： Seong-Taek Hwang ,  Chang-Sup Shim ,  Yun-Je Oh

IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/23 ,  H01S3/00

CPC分类号： H01S3/067

摘要： A wideband light source is disclosed. The wideband light source includes a first optical amplifier for generating and amplifying a C-band spontaneous emission light, a second optical amplifier for generating C-band and L-band spontaneous emission lights which is pumped by the C-band spontaneous emission light to amplify an L-band spontaneous emission light, and a reflector positioned between the first and second optical amplifiers to reflect the C-band spontaneous emission light provided from the first optical amplifier back to the first optical amplifier and the C-band and L-band spontaneous emission lights provided from the second optical amplifier back to the second optical amplifier.

摘要翻译： 公开了一种宽带光源。 宽带光源包括用于产生和放大C波段自发发射光的第一光放大器，用于产生C波段和L波段自发发射光的第二光放大器，其由C波段自发发射光泵浦以放大 L波段自发发射光和位于第一和第二光放大器之间的反射器，以将从第一光放大器提供的C波段自发发射光反射回第一光放大器，C波段和L波段自发 从第二光放大器提供的发射光返回到第二光放大器。

公开(公告)号：US20050069252A1

公开(公告)日：2005-03-31

申请号：US10825813

申请日：2004-04-16

申请人： Seong-Taek Hwang ,  Yun-Je Oh ,  Kwan-Soo Lee

发明人： Seong-Taek Hwang ,  Yun-Je Oh ,  Kwan-Soo Lee

IPC分类号： H01S3/06 ,  G02B6/26 ,  G02B6/42 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H01S5/06

CPC分类号： H01S3/06754 ,  H01S3/0064 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094023 ,  H01S3/1608

摘要： A dual-port broadband light source with independently controllable output powers includes a broadband light source having a first gain medium pumped by an input pump light in order to output a first amplified spontaneous emission through both ends thereof. A second gain medium pumped by another input pump light in order to output a second amplified spontaneous emission through both ends thereof. A reflector disposed between the opposite ends of the first and second gain mediums to reflect the input first and second amplified spontaneous emissions. The first and second amplified spontaneous emissions output from the first and second gain mediums are then output to the outside through first and second output terminals.

摘要翻译： 具有独立可控的输出功率的双端口宽带光源包括具有由输入泵浦光泵浦的第一增益介质的宽带光源，以便通过其两端输出第一放大的自发发射。 第二增益介质由另一输入泵浦泵浦，以便通过其两端输出第二放大的自发发射。 设置在第一和第二增益介质的相对端之间的反射器，以反映输入的第一和第二放大的自发辐射。 从第一和第二增益介质输出的第一和第二放大的自发辐射然后通过第一和第二输出端输出到外部。

公开(公告)号：US20050068209A1

公开(公告)日：2005-03-31

申请号：US10807048

申请日：2004-03-23

申请人： Sung-Kee Kim ,  Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Sung-Kee Kim ,  Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04J3/00 ,  G11B20/10 ,  H03M5/06 ,  H03M13/00 ,  H04B10/00 ,  H04B10/516 ,  H04B10/556 ,  H04B10/61

CPC分类号： H03M5/06 ,  G11B20/10 ,  H03M13/00

摘要： A precoder for an optical duo-binary transmission apparatus disposing the precoder before a time division multiplexer includes a judgment unit for judging whether an odd number or even number of ‘1’s exist in data input signals of N channels inputted at an nth time of channel input. Further included in the precoder is a toggle unit for toggling an output signal of the judgment unit when the judgment is odd, and for determining an output value for one of the channels. The precoder also has an output unit for determining output values of other channels according to a respective data input signal and a predetermined channel from among the N channels.

摘要翻译： 用于在时分多路复用器之前配置预编码器的光二元传输装置的预编码器包括判断单元，用于判断在第n时刻输入的N个信道的数据输入信号中是否存在“1”的奇数或偶数 的通道输入。 进一步包括在预编码器中的是用于当判断为奇数时用于切换判断单元的输出信号并且用于确定一个通道的输出值的切换单元。 预编码器还具有输出单元，用于根据相应的数据输入信号和N个信道中的预定信道来确定其它信道的输出值。

公开(公告)号：US20050046926A1

公开(公告)日：2005-03-03

申请号：US10780217

申请日：2004-02-17

申请人： Seong-Taek Hwang ,  Sang-Ho Kim ,  Chang-Sup Shim ,  Yun-Je Oh

发明人： Seong-Taek Hwang ,  Sang-Ho Kim ,  Chang-Sup Shim ,  Yun-Je Oh

IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/00

CPC分类号： H01S3/06795 ,  H01S3/094003

摘要： A broadband light source with a dual port structure includes a gain medium pumped by inputted pump light for outputting ASE light through both terminals thereof, and a pumping section for pumping the gain medium. The broadband light source outputs ASE light, which is outputted from both terminals of the gain medium, to an exterior through first and second output terminals.

摘要翻译： 具有双端口结构的宽带光源包括通过输入泵浦光泵浦的增益介质，用于通过其两个端子输出ASE光，以及用于泵浦增益介质的泵送部分。 宽带光源通过第一和第二输出端子将从增益介质的两端输出的ASE光输出到外部。

公开(公告)号：US08594424B2

公开(公告)日：2013-11-26

申请号：US12632118

申请日：2009-12-07

申请人： Seong-Taek Hwang ,  Sang-Wook Oh ,  Hyun-Soo Kim ,  Sang-Ho Kim ,  Hee-Min Kwon ,  Yun-Je Oh ,  Byung-Jik Kim

发明人： Seong-Taek Hwang ,  Sang-Wook Oh ,  Hyun-Soo Kim ,  Sang-Ho Kim ,  Hee-Min Kwon ,  Yun-Je Oh ,  Byung-Jik Kim

IPC分类号： G06K9/34 ,  G06K9/00

CPC分类号： H04N5/225 ,  G06K9/228 ,  G06K9/723 ,  G06K2209/01

摘要： An apparatus and method for recognizing characters of an image captured using a camera in a mobile terminal are provided, wherein an image of a signboard is captured, a text area is extracted from the captured image of the signboard, characters are recognized from the extracted text area, similar characters up to a predetermined priority level are generated for each recognized character of the extracted text area, location information of an area within a predetermined range from a current position of a user is acquired, store names are extracted from the location information, text is generated by combining the similar characters according to weights, the text are compared with the extracted store names, and a comparison result is output.

摘要翻译： 提供一种用于识别在移动终端中使用相机拍摄的图像的字符的装置和方法，其中捕获招牌的图像，从所述招牌的所捕获的图像中提取文本区域，从所提取的文本中识别字符 为所提取的文本区域的每个识别字符生成直到预定优先级的类似字符，获取来自用户的当前位置的预定范围内的区域的位置信息，从位置信息中提取存储名称， 通过根据权重组合相似的字符来生成文本，将文本与提取的商店名称进行比较，并输出比较结果。

公开(公告)号：US08116405B2

公开(公告)日：2012-02-14

申请号：US12104662

申请日：2008-04-17

申请人： Jae-Hun Cho ,  Byung-Duck Cho ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Jae-Hun Cho ,  Byung-Duck Cho ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H03K9/00 ,  H04L27/00

CPC分类号： H04J3/0697 ,  G04R20/06 ,  H04J3/0644 ,  H04J3/0664 ,  H04J3/0667

摘要： A method and apparatus for time synchronization (TS) method using GPS information in a communication system synchronizing the time of slave nodes, which do not have a GPS receiver, by using GPS information of a node having a GPS receiver. The method includes the steps of extracting 1PPS, TOD, 1PPS_en, and clocks using GPS signals by a grand master node having a GPS receiver, stabilizing the signals, generating a sync message for TS, and transmitting the sync message to a slave node; receiving the sync message by the slave node and conducting a TS operation using OFCC synchronization technology extracting 1PPS, TOD, and 1PPS_en signals using the modified TOD information by the block and delivering to a stabilization block of the slave node for stabilization; and redelivering to the TS block to update TOD information and generate a sync message for TS of a second slave node.

摘要翻译： 通过使用具有GPS接收机的节点的GPS信息，在通信系统中使用GPS信息来同步没有GPS接收机的从节点的时间的时间同步（TS）方法和方法。 该方法包括以下步骤：通过具有GPS接收机的大主节点提取1PPS，TOD，1PPS_en和使​​用GPS信号的时钟，稳定信号，产生用于TS的同步消息，并将同步消息发送到从节点; 由所述从节点接收同步消息，并且使用OFCC同步技术进行TS操作，所述同步技术使用所述块的修改的TOD信息提取1PPS，TOD和1PPS_en信号，并将其传送到所述从节点的稳定块以进行稳定; 并且重新发送到TS块以更新TOD信息并且生成用于第二从节点的TS的同步消息。

公开(公告)号：US08059963B2

公开(公告)日：2011-11-15

申请号：US12105499

申请日：2008-04-18

申请人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Han-Lim Lee ,  Ki-Uk Song

发明人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Han-Lim Lee ,  Ki-Uk Song

IPC分类号： H04B10/00

CPC分类号： H04B10/25753 ,  H04W4/18 ,  H04W88/04

摘要： A wired relay method for using a remote station and an apparatus thereof for a Radio over Fiber (RoF) wired relay system supporting a Time Division Duplexing (TDD) wireless communication service, which shares an Low-Noise Amplifier (LNA) for both uplink and downlink operations. The remote station includes a block for dividing each of a downlink optical signal carrying service data and an optical signal carrying transmission/reception control information of the RoF wired relay system, which are input from a base station, a gain controller for separating an uplink Radio Frequency (RF) signal input from an antenna or a portion of a downlink RF signal output from a High-Power Amplifier (HPA) and for monitoring the strength of the input and output RF signals in order to control a gain of the LNA. A converter mutually converts an optical signal and an RF signal, an amplifier amplifies the converted RF signal, and an RF signal flow controller automatically controls uplink and downlink transmission paths of the amplified RF signal according to a transmission/reception status of the RoF wired relay system.

摘要翻译： 一种用于使用远程站的有线中继方法及其装置，用于支持时分双工（TDD）无线通信业务的无线电光纤（RoF）有线中继系统，该无线通信业务共享用于上行链路和/或上行链路的低噪声放大器（LNA） 下行操作。 远程站包括：用于分配来自基站输入的携带服务数据的下行链路光信号和携带RoF有线中继系统的发送/接收控制信息的光信号的块，用于分离上行链路无线电的增益控制器 从天线输入的频率（RF）信号或从大功率放大器（HPA）输出的下行链路RF信号的一部分输入，并用于监视输入和输出RF信号的强度，以便控制LNA的增益。 A转换器相互转换光信号和RF信号，放大器放大转换的RF信号，RF信号流控制器根据RoF有线继电器的发送/接收状态自动控制放大的RF信号的上行链路和下行链路传输路径 系统。

公开(公告)号：US08009742B2

公开(公告)日：2011-08-30

申请号：US11900873

申请日：2007-09-12

申请人： Sung-Kee Kim ,  Do-In Choi ,  Yong-Gyoo Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Sung-Kee Kim ,  Do-In Choi ,  Yong-Gyoo Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04N11/02 ,  H04N7/20 ,  H04N7/173 ,  H04N7/16 ,  H04J3/16

CPC分类号： H04L65/607 ,  H04L65/608 ,  H04N21/234318 ,  H04N21/4307 ,  H04N21/64707

摘要： A system and method for retransmitting an Internet protocol packet for terrestrial digital multimedia broadcasting (DMB) service are provided, in which a PES packetizer and an MPEG-2 TS multiplexer are removed; video, audio, and data signals are individually carried by RTP packets; and a receiver extracts object clock reference (OCR) included in a MPEG-4 SL, and synchronizes a system clock and controls buffers by means of the OCR.

摘要翻译： 提供了一种用于重新发送用于地面数字多媒体广播（DMB）业务的因特网协议分组的系统和方法，其中PES分组器和MPEG-2TS多路复用器被去除; 视频，音频和数据信号由RTP包分别承载; 并且接收器提取包含在MPEG-4SL中的对象时钟参考（OCR），并且通过OCR同步系统时钟并控制缓冲器。

公开(公告)号：US07340170B2

公开(公告)日：2008-03-04

申请号：US10939790

申请日：2004-09-13

申请人： Sung-Bum Park ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Sung-Bum Park ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04J14/00 ,  H04B10/08

CPC分类号： H04J14/0226 ,  H04B10/032 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0291 ,  H04J14/0294

摘要： A wavelength-division multiplexed self-healing passive optical network is capable of detecting cut-off and deterioration of feeder fiber and distribution fiber and restoring a network with a star structure. The network includes a central office, a remote node, and a plurality of subscriber units. Working and protection feeder fibers connect the central office to the remote node. A reflection unit at an end of the remote node connects to the central office for reflecting a monitoring optical signal transmitted from the central office. An output monitor stage at an end of the central office connects to the remote node for detecting the reflected monitoring optical signal and generating a control signal based on the presence of abnormality of the working and protection feeder fibers.

摘要翻译： 波分复用自愈无源光网络能够检测馈线光纤和配线光纤的切断和劣化，并恢复具有星型结构的网络。 网络包括中心局，远程节点和多个用户单元。 工作和保护馈线光纤将中心局连接到远程节点。 远程节点末端的反射单元连接到中心局，用于反映从中心局发送的监控光信号。 中心局端部的输出监控级与远程节点相连，用于检测反射的监控光信号，并根据工作和保护馈线光纤的异常情况生成控制信号。