公开(公告)号：US06944405B2

公开(公告)日：2005-09-13

申请号：US09953637

申请日：2001-09-17

申请人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04Q3/52 ,  H04Q11/00 ,  H04Q11/04 ,  H04B10/08 ,  H04B17/00

CPC分类号： H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0045

摘要： This invention provides an optical transmission with a demultiplexer for demultiplexing an input optical signal into optical signals of different channels and a multiplexer for multiplexing the optical signals outputted from the demultiplexer. The optical cross-connect device includes: N BICDR (Bit Rate Independent Clock and Data Recovery) receivers each for receiving the associated optical signals outputted from the demultiplexer, for converting the associated optical signal into an electrical signal and reproducing clocks and data based on the bit rate of the electrical signal; a switchboard with a cross-connect switch for receiving output signals from the respective N BICDR receiver; N bit rate discriminating units for receiving the output signals from the N BICDR receivers, respectively, thereby outputting bit rate discriminating signals associated with the N BICDR receivers, respectively; a temperature sensing unit for outputting a temperature sensing signal; and, a central processing unit for receiving the bit rate discriminating signals from the N bit rate discriminating unit, along with the temperature sensing signal from the temperature sensing unit, for compensating each of the received bit rate discriminating signals with a temperature-dependent bit rate value read out, based on the temperature sensing signal, from a memory, and for controlling the bit rate of the associated BICDR receiver based on the compensated bit rate.

摘要翻译： 本发明提供了一种具有解复用器的光传输器，用于将输入光信号解复用为不同信道的光信号，以及复用器，用于复用从解复用器输出的光信号。 光交叉设备包括：N个BICDR（比特率独立时钟和数据恢复）接收机，每个接收器用于接收从解复用器输出的相关联的光信号，用于将相关联的光信号转换成电信号，并基于该信号再现时钟和数据 比特率的电信号; 具有交叉连接开关的交换机，用于接收来自相应N BICDR接收机的输出信号; N比特率鉴别单元，用于分别从N个BICDR接收机接收输出信号，从而分别输出与N个BICDR接收机相关联的比特率鉴别信号; 用于输出温度感测信号的温度检测单元; 以及用于从温度感测单元接收来自N比特率鉴别单元的比特率鉴别信号的中央处理单元，用于以温度依赖比特率对每个接收的比特率鉴别信号进行补偿 基于温度感测信号从存储器读出，并且用于基于补偿的比特率来控制相关联的BICDR接收器的比特率。

公开(公告)号：US06937388B2

公开(公告)日：2005-08-30

申请号：US10425698

申请日：2003-04-29

申请人： Kwan-Woong Song ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Kwan-Woong Song ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H01S3/06 ,  G02B6/00 ,  H01S3/067 ,  H01S3/091 ,  H01S3/10 ,  H01S3/00

CPC分类号： H04B10/291

摘要： Disclosed is an L-band optical amplifier for amplifying optical signals with the wavelength band of the L-band. The L-band optical amplifier comprises an optical-amplifying section for emitting spontaneous emission and for amplifying the optical signals by pumping of the spontaneous emission, a mirror for reflecting the optical signals amplified by the optical-amplifying section to re-enter back to the optical-amplifying section, and a feedback loop connected with both terminals of the optical-amplifying section for causing spontaneous emission emitted from the optical-amplifying section to be fed back to the optical-amplifying section.

摘要翻译： 公开了一种用于放大具有L波段的波段的光信号的L波段光放大器。 L波段光放大器包括用于发射自发发射并通过泵浦自发辐射来放大光信号的光放大部分，用于反射由光放大部分放大的光信号的反射镜重新返回到 光放大部分和与光放大部分的两端连接的反馈回路，用于使从光放大部分发出的自发发射反馈到光放大部分。

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：US20050047784A1

公开(公告)日：2005-03-03

申请号：US10780132

申请日：2004-02-17

申请人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04J14/00 ,  H04B10/07 ,  H04B10/27 ,  H04B10/272 ,  H04B10/40 ,  H04B10/50 ,  H04B10/572 ,  H04B10/60 ,  H04J14/02

CPC分类号： H04J14/0282 ,  H04B10/2587 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J2014/0253

摘要： An optical wavelength tracking apparatus and method in a wavelength division multiplexed (WDM) passive optical network (PON) in which a central office (CO) having a multi-frequency light source is connected to a plurality of optical network units (ONUs) having loop-back light sources through a WDM MUX/DEMUX in a remote node (RN). The power levels of downstream and upstream WDM optical signals are measured. The WDM wavelengths of the multi-frequency light source and the WDM MUX/DEMUX are controlled to be nearly identical in order to minimize the difference between the power levels of the downstream and upstream WDM optical signals.

摘要翻译： 一种波分复用（WDM）无源光网络（PON）中的光波长跟踪装置和方法，其中具有多频光源的中心局（CO）连接到具有环路的多个光网络单元（ONU） 通过远程节点（RN）中的WDM MUX / DEMUX来返回光源。 测量下行和上行WDM光信号的功率电平。 控制多频光源和WDM MUX / DEMUX的WDM波长几乎相同，以便最小化下行和上行WDM光信号的功率电平之间的差异。

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：US20050008362A1

公开(公告)日：2005-01-13

申请号：US10721712

申请日：2003-11-25

申请人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04B10/03 ,  H04B10/032 ,  H04B10/27 ,  H04B10/272 ,  H04J3/16 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  G02F1/00

CPC分类号： H04J14/0297 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/029 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0081

摘要： A self-healing WDM (Wavelength Division Multiplexing)—PON (Passive Optical Network) system is disclosed and includes a CO (Central Office), a RN (Remote Node) and a plurality of subscriber units. The system includes a trunk working fiber and a trunk protection fiber for connecting the CO with the RN, a distribution working fiber, and a distribution protection fiber for connecting the RN with the subscriber units. The CO is connected to the trunk working fiber and the trunk protection fiber, and contains an optical switching unit switched when an error or communication failure occurs, an upstream working optical receiver and an upstream protection optical receiver for receiving upstream data, and a downstream working light source and a downstream protection light source for transmitting downstream data. Each subscriber unit is connected to the distribution working fiber and the distribution protection fiber, and contains an optical switching unit switched when an error or communication failure occurs, a downstream working optical receiver and a downstream protection optical receiver for receiving downstream data, and an upstream working light source and an upstream protection light source for transmitting downstream data.

摘要翻译： 公开了一种自愈WDM（波分多路复用）-PON（被动光网络）系统，包括CO（中心局），RN（远端节点）和多个用户单元。 该系统包括中继线工作光纤和中继保护光纤，用于将CO与RN连接，分配工作光纤和用于将RN与用户单元连接的分布保护光纤。 CO连接到主干工作光纤和中继保护光纤，并且在发生错误或通信故障时包含切换的光交换单元，用于接收上游数据的上行工作光接收机和上游保护光接收机，以及下行工作 光源和用于传输下游数据的下游保护光源。 每个用户单元连接到分发工作光纤和分布保护光纤，并且包含当发生错误或通信故障时切换的光交换单元，用于接收下行数据的下行工作光接收机和下游保护光接收机，以及上游 工作光源和上游保护光源，用于传输下游数据。

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。