公开(公告)号：US20050134398A1

公开(公告)日：2005-06-23

申请号：US10858925

申请日：2004-06-01

申请人： Seung Myong ,  Kwang Kim ,  Jyung Lee ,  Sang Lim

发明人： Seung Myong ,  Kwang Kim ,  Jyung Lee ,  Sang Lim

IPC分类号： H03H9/46 ,  H03H7/12

CPC分类号： H03H7/12

摘要： A tunable high-order Bessel low pass filter which is applied to a multi-rate duobinary generation system of an optical communication system. The tunable Bessel low pass filter comprises a variable inductor circuit including a plurality of variable inductors connected in series between an input signal terminal and an output signal terminal and controlled respectively by corresponding inductance control signals, a variable capacitor circuit including a plurality of variable capacitors connected respectively between corresponding connection nodes of the plurality of variable inductors of the variable inductor circuit and a ground terminal and controlled respectively by corresponding capacitance control signals, and a variable capacitor/inductor controller for outputting the corresponding capacitance control signals to the variable capacitors of the variable capacitor circuit and the corresponding inductance control signals to the variable inductors of the variable inductor circuit on the basis of preset values according to a given data rate, respectively. When the data rate of an application system is changed, the tunable Bessel low pass filter controls its filtering characteristics most appropriately to the changed data rate, so as to extend its application range and enhance performance and efficiency of the application system.

摘要翻译： 一种可调谐的高阶贝塞尔低通滤波器，适用于光通信系统的多速率二进制生成系统。 可调谐贝塞尔低通滤波器包括可变电感器电路，其包括串联连接在输入信号端子和输出信号端子之间的多个可变电感器，分别由相应的电感控制信号控制，可变电容器电路包括多个连接的可变电容器 分别在可变电感器电路的多个可变电感器的相应连接节点和接地端子之间分别由相应的电容控制信号控制;以及可变电容器/电感器控制器，用于将相应的电容控制信号输出到变量的可变电容器 电容器电路和相应的电感控制信号分别根据给定的数据速率在可变电感器的可变电感器的基础上进行预设值。 当应用系统的数据速率发生变化时，可调式贝塞尔低通滤波器最适合改变数据速率控制其滤波特性，从而扩展其应用范围，提高应用系统的性能和效率。

公开(公告)号：US20050128555A1

公开(公告)日：2005-06-16

申请号：US10863741

申请日：2004-06-07

申请人： Youn Jang ,  Kwang Kim ,  Jyung Lee ,  Seung Myong

发明人： Youn Jang ,  Kwang Kim ,  Jyung Lee ,  Seung Myong

IPC分类号： H04B10/18 ,  G02B26/00 ,  G02F1/00 ,  G02F1/01 ,  H04B10/155

CPC分类号： H04B10/50595 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/50575 ,  H04B10/508 ,  H04B10/5162 ,  H04B10/5165 ,  H04B2210/003

摘要： The present invention relates to an apparatus and method for automatically correcting a bias voltage for a carrier suppressed pulse generating modulator using the phase distribution of the output pulses, which automatically detects an optimal bias voltage for the carrier suppressed pulse generating modulator and stabilizes the bias voltage. In the bias voltage automatic correction method and apparatus of the present invention, an optimal bias voltage for the modulator is set to a bias voltage that is obtained when mean power of an optical signal output from the modulator is highest. The varying direction of the bias voltage is detected on the basis of the phase variations in the output optical signal of the modulator according to the bias voltage variations is detected, and the bias voltage is corrected oppositely to the varying direction of the bias voltage.

摘要翻译： 本发明涉及一种使用输出脉冲的相位分布自动校正载波抑制脉冲发生调制器的偏置电压的装置和方法，其自动检测载波抑制脉冲发生调制器的最佳偏置电压并稳定偏置电压 。 在本发明的偏置电压自动校正方法和装置中，将调制器的最佳偏置电压设置为当从调制器输出的光信号的平均功率最高时获得的偏置电压。 根据检测到的偏置电压变化，基于调制器的输出光信号的相位变化来检测偏置电压的变化方向，并且偏置电压与偏置电压的变化方向相反地校正。

公开(公告)号：US20050135818A1

公开(公告)日：2005-06-23

申请号：US10815064

申请日：2004-03-31

申请人： Jyung Lee ,  Seung Myong ,  Joon Lee ,  Kwang Kim

发明人： Jyung Lee ,  Seung Myong ,  Joon Lee ,  Kwang Kim

IPC分类号： H04B10/06 ,  H04B10/158

CPC分类号： H04B10/695

摘要： Disclosed herein is an apparatus for controlling a decision threshold voltage to an optical receiver, which is capable of automatically controlling the decision threshold voltage to the optical receiver appropriately to signal level decision on the basis of a low-frequency band signal component of an output signal from the optical receiver. The apparatus is adapted to control the level of the decision threshold voltage to the optical receiver, which converts an input optical signal into an electrical signal. To this end, the apparatus comprises a voltage detector for branching off part of the output signal from the optical receiver and detecting a corresponding voltage, a differential comparator for comparing the voltage detected by the voltage detector with a reference voltage inputted thereto and outputting the resulting differential voltage, a low pass filter for filtering the differential voltage from the differential comparator at a predetermined low frequency band and supplying the resulting voltage as the threshold voltage to the optical receiver, and a voltage controller for controlling the reference voltage to the differential comparator on the basis of a differential voltage between the threshold voltage from the low pass filter and a predetermined voltage corresponding to a predetermined minimum bit error rate.

摘要翻译： 本文公开了一种用于控制光接收机的判定阈值电压的装置，其能够基于输出信号的低频带信号分量自动控制对光接收器的判定阈值电压以适当地进行信号电平判定 从光接收机。 该装置适于控制光接收器的判定阈值电平的电平，光接收器将输入光信号转换为电信号。 为此，该装置包括用于将来自光接收器的输出信号的一部分分支并检测相应电压的电压检测器，用于将由电压检测器检测到的电压与输入到其的参考电压进行比较的差分比较器， 差分电压，低通滤波器，用于在预定的低频带对差分比较器的差分电压进行滤波，并将得到的电压作为阈值电压提供给光接收器;以及电压控制器，用于控制差分比较器的参考电压 来自低通滤波器的阈值电压与对应于预定最小误码率的预定电压之间的差分电压的基础。

公开(公告)号：US20060133824A1

公开(公告)日：2006-06-22

申请号：US11264384

申请日：2005-11-02

申请人： Seung Myong ,  Youn Jang ,  Kwang Kim ,  Hyun Lee

发明人： Seung Myong ,  Youn Jang ,  Kwang Kim ,  Hyun Lee

IPC分类号： H04B10/04

CPC分类号： H04B10/572

摘要： Provided is an apparatus for stabilizing a wavelength for optical communications which includes a digital control circuit unit and an analog control circuit unit to stabilize a wavelength that may be shifted at the time of driving an optical source for optical communications. The wavelength can be precisely controlled according to a modulation format using the optical source for optical communications, and thus performance can be stabilized.

摘要翻译： 提供了一种用于稳定光通信的波长的装置，其包括数字控制电路单元和模拟控制电路单元，以稳定在驱动用于光通信的光源时可能偏移的波长。 可以使用光通信用光源根据调制格式精确地控制波长，从而可以稳定性能。

公开(公告)号：US20070134003A1

公开(公告)日：2007-06-14

申请号：US11405765

申请日：2006-04-18

申请人： Jyung Lee ,  Jun Lee ,  Hyun Lee ,  Kwang Kim

发明人： Jyung Lee ,  Jun Lee ,  Hyun Lee ,  Kwang Kim

IPC分类号： H04B10/00

CPC分类号： G02B6/4201 ,  G02B6/4256 ,  G02B6/4266 ,  G02B6/428

摘要： An optical transceiver case is provided. The optical transceiver case has an optical transmission/reception device and a PCB that operates the optical transmission/reception device. The optical transceiver case includes a lower plate and an upper plate. The lower plate supports the optical transmission/reception device and the printed circuit board, and includes handle grooves formed on both external sides of the lower plate to allow the optical transceiver case to be mounted/detached to/from an optical transmission/reception system's board. The upper plate is coupled to the lower plate to mount the optical transmission/reception device and the printed circuit board, and includes a protuberance embossed on an external upper surface of the upper plate in order to discharge heat generated from the optical transmission/reception device and the PCB to the outside. The optical transceiver case is easily mounted detached to/from on optical transmission/reception system's board and maintains a constant internal temperature.

摘要翻译： 提供光收发机外壳。 光收发机壳体具有操作光发送/接收装置的光发送/接收装置和PCB。 光收发机壳体包括下板和上板。 下板支撑光学发送/接收装置和印刷电路板，并且包括形成在下板的两个外侧上的手柄槽，以允许光收发器壳体从光学发送/接收系统板安装/分离 。 上板联接到下板以安装光学传输/接收装置和印刷电路板，并且包括浮雕在上板的外部上表面上的突起，以便排出从光发送/接收装置产生的热量 和PCB到外面。 光收发机外壳很容易安装在光传输/接收系统板上，从而保持恒定的内部温度。

公开(公告)号：US20080040604A1

公开(公告)日：2008-02-14

申请号：US11589031

申请日：2006-10-26

申请人： Kwang Kim ,  Yool Kwon ,  Bong Kim

发明人： Kwang Kim ,  Yool Kwon ,  Bong Kim

IPC分类号： H04L9/00

CPC分类号： H04L63/0428 ,  H04L63/08

摘要： A system and a method for providing a secured transmission through an authenticated encryption for each ONU in downlink transmission of an OLT in GPON are provided. The GPON system includes an OLT for generating a GTC downlink frame by receiving data from an external service provider and ONUs for receiving the GTC downlink frame from the OLT and processing the received GTC downlink frame. The OLT performs the authenticated encryption for the generated GTC downlink frame according to the ONU by including an authentication generator and the ONU determines whether the GTC downlink frame is allowed to be processed or not by checking the authentication of the received GTC downlink frame through an authentication checker.

摘要翻译： 提供了一种用于通过GPON的OLT的下行链路传输中的每个ONU通过认证加密来提供安全传输的系统和方法。 GPON系统包括通过从外部服务提供商接收数据和从OLT接收GTC下行链路帧并处理接收到的GTC下行链路帧来生成GTC下行链路帧的OLT。 OLT通过包括认证发生器对所生成的GTC下行链路帧进行认证加密，并且ONU通过认证检查接收的GTC下行链路帧的认证来确定GTC下行链路帧是否被允许被处理 检查员

公开(公告)号：US20070225908A1

公开(公告)日：2007-09-27

申请号：US11707762

申请日：2007-02-16

申请人： Jong Kim ,  Jin Kim ,  Kwang Kim ,  Hyun Min ,  Sung Yang ,  Suk Jung ,  Hye Yang

发明人： Jong Kim ,  Jin Kim ,  Kwang Kim ,  Hyun Min ,  Sung Yang ,  Suk Jung ,  Hye Yang

IPC分类号： G01C21/30 ,  G01C21/32

CPC分类号： G01C21/3691 ,  G08G1/092 ,  G08G1/096827

摘要： A mobile terminal executes a navigation function by receiving Transport Protocol Experts Group (TPEG) traffic information through a Digital Multimedia Broadcasting (DMB) network. This DMB-based mobile terminal receives and decodes TPEG data at a separate second processor different from a conventional first processor. Further, the DMB-based mobile terminal may execute a calculation of an optimum route at the second processor. The terminal and a related method reduce the processing load of the first processor, which causes a decrease in the response time to a user's navigation request and improves a user's convenience.

摘要翻译： 移动终端通过数字多媒体广播（DMB）网络接收传输协议专家组（TPEG）业务信息来执行导航功能。 该基于DMB的移动终端在与传统的第一处理器不同的单独的第二处理器处接收和解码TPEG数据。 此外，基于DMB的移动终端可以在第二处理器处执行最佳路由的计算。 终端和相关方法减少了第一处理器的处理负担，这导致了对用户导航请求的响应时间的减少，并提高了用户的便利性。

公开(公告)号：US20070186380A1

公开(公告)日：2007-08-16

申请号：US11705780

申请日：2007-02-14

申请人： Yun Kim ,  Kwang Kim ,  Seung Lee ,  Hyun Yang ,  Ji Lee ,  Jeong Lee

发明人： Yun Kim ,  Kwang Kim ,  Seung Lee ,  Hyun Yang ,  Ji Lee ,  Jeong Lee

IPC分类号： E05D7/06

CPC分类号： G06F1/1624 ,  E05D15/582 ,  E05Y2900/606 ,  G06F1/1616 ,  G06F1/1681 ,  G06F1/1683 ,  Y10T16/5323 ,  Y10T16/544 ,  Y10T16/5443 ,  Y10T16/5444 ,  Y10T16/5448 ,  Y10T16/545 ,  Y10T16/5457

摘要： Disclosed are a hinge assembly and a mobile device having the hinge assembly. In the mobile device, a rotation portion 14 slides and rotates on a base portion 10, so as to be inclined to the base portion 10. For this reason, the rotation portion 14 is connected to the base portion by means of the hinge assembly 20 so as to slide and rotate on the base portion 10. The rotation portion 14 slides on the base portion by a predetermined distance, and then rotates to be inclined at a desired angle with respect to the base portion 10. The rotation portion 14 easily rotates with respect to the base portion of the mobile device, so that the status of the mobile device can be easily converted. Further, when the status of the mobile device is converted, the front, rear, left and right of a display screen is not changed. As a result, the mobile device should not have a structure of changing a display direction of the display screen. Further, there is an advantage in that an electric connection between the base portion and the rotation portion by means of a connection link mechanism can be stably achieved.

摘要翻译： 公开了具有铰链组件的铰链组件和移动装置。 在移动装置中，旋转部14在基部10上滑动旋转，从而与基部10倾斜。 为此，旋转部分14通过铰链组件20连接到基部，以便在基部10上滑动和旋转。 旋转部分14在基部上滑动预定距离，然后旋转以相对于基部10倾斜所需的角度。 旋转部分14相对于移动设备的基部容易旋转，从而可以容易地转换移动设备的状态。 此外，当移动设备的状态被转换时，显示屏幕的前，后，左，右不改变。 结果，移动设备不应该具有改变显示屏的显示方向的结构。 另外，通过连接机构，能够稳定地实现基部与旋转部之间的电连接。

公开(公告)号：US20070152761A1

公开(公告)日：2007-07-05

申请号：US11636977

申请日：2006-12-12

申请人： Kwang Kim ,  Chun-Ying Chen ,  Mark Chambers

发明人： Kwang Kim ,  Chun-Ying Chen ,  Mark Chambers

IPC分类号： H03L7/00

CPC分类号： H03L7/0995 ,  H03L7/093 ,  H03L7/18 ,  H03L2207/06

摘要： An embodiment of the invention provides an apparatus and method for varying a voltage controlled oscillator (VCO) sensitivity. A VCO has an oscillator portion coupled to a variable current supply. The variable current supply has one or more enabled variable current cells. The enable variable current cell input provides a control to change the VCO sensitivity. In an example, the oscillator portion has a ring oscillator. In an example, the variable current supply has at least two variable current cells that supply the control current. A binary control signal alters a quantity of variable current cells that supply the control current. Each successive variable current cell has an output current substantially equal to twice that of a prior variable current cell.

摘要翻译： 本发明的实施例提供了一种用于改变压控振荡器（VCO）灵敏度的装置和方法。 VCO具有耦合到可变电流源的振荡器部分。 可变电流源具有一个或多个使能的可变电流单元。 使能可变电流单元输入提供了改变VCO灵敏度的控制。 在一个示例中，振荡器部分具有环形振荡器。 在一个示例中，可变电流源具有提供控制电流的至少两个可变电流单元。 二进制控制信号改变提供控制电流的可变电流单元的数量。 每个连续的可变电流单元具有基本上等于先前可变电流单元的输出电流的两倍的输出电流。

公开(公告)号：US20070133800A1

公开(公告)日：2007-06-14

申请号：US11607371

申请日：2006-12-01

申请人： Kwang Kim ,  Yool Kwon ,  Bong Kim

发明人： Kwang Kim ,  Yool Kwon ,  Bong Kim

IPC分类号： H04K1/00

CPC分类号： H04L63/0428 ,  H04Q11/0067 ,  H04Q2011/0088

摘要： Provided is a method for setting a security channel between an OLT and at least one ONU in an EPON. In detail, a channel is generated by which the OLT makes a reciprocal security capability agreement with the ONU that wants to set a security channel in a discovery interval and then automatically registers the ONU with the security capability agreement. The security channel is set by which the OLT distributes an encryption key for the security with the ONU completed with the security capability agreement. A renewal point of the encryption key is shared by transmitting a message indicative of a time to change the encryption key between the OLT and the ONU both completed with the encryption key distribution.

摘要翻译： 提供一种在EPON中在OLT与至少一个ONU之间设置安全信道的方法。 具体而言，生成通过OLT与想要在发现间隔内设定安全信道的ONU进行互易的安全性能协议，然后自动向ONU注册安全性能协议。 设置安全通道，OLT通过该通道分配与安全能力协议完成的ONU的安全性的加密密钥。 通过发送指示时间的消息来共享加密密钥的更新点，所述消息改变OLT和正在加密密钥分发的ONU之间的加密密钥。