利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

79 条记录 (耗时 0.075 秒)

    System and method for calculating real-time voltage stability risk index in power system using time series data
    1.
    发明申请
    System and method for calculating real-time voltage stability risk index in power system using time series data 有权
    使用时间序列数据计算电力系统实时电压稳定性风险指数的系统和方法

    公开(公告)号：US20050256922A1

    公开(公告)日：2005-11-17

    申请号：US11113048

    申请日：2005-04-25

    申请人： Dong Kim ,  Young Moon ,  Ho Kim ,  Jae Yoon

    发明人： Dong Kim ,  Young Moon ,  Ho Kim ,  Jae Yoon

    IPC分类号： G06F19/00 ,  G06G7/00 ,  H02J3/00

    CPC分类号： H02J3/00 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S40/22

    摘要： A system and method for calculating a real time voltage stability risk index in a power system are disclosed. The disclosed system comprises a real time phasor measurement device for calculating a voltage stability risk index using RMS voltage and an upper voltage stability monitoring system for collecting and sequencing the voltage stability risk index transferred from the real time phasor measurement device. The disclosed method comprises calculating RMS voltage by using bus voltage measured; calculating an N moving average voltage for the RMS voltages; calculating a % diversity between the bus voltage measured and the N moving average voltage; calculating a voltage stability risk index by dividing the area constructed by the % diversity by the number of sections; transferring the voltage stability risk index from a real time phasor measurement device to an upper voltage stability monitoring system; acquiring and sequencing the voltage stability risk indexes transferred.

    摘要翻译： 公开了一种用于计算电力系统中的实时电压稳定性风险指数的系统和方法。 所公开的系统包括用于使用RMS电压计算电压稳定性风险指数的实时相量测量装置和用于收集和排序从实时相量测量装置传送的电压稳定性风险指数的上电压稳定性监测系统。 所公开的方法包括通过使用测量的母线电压来计算RMS电压; 计算RMS电压的N移动平均电压; 计算总线电压和N移动平均电压之间的百分比; 通过将由％多样性构成的面积除以截面数来计算电压稳定性风险指数; 将电压稳定性风险指数从实时相量测量装置转移到上电压稳定监测系统; 获取和排序转移的电压稳定性风险指数。

    Hetero junction bipolar transistor and method of manufacturing the same
    2.
    发明申请
    Hetero junction bipolar transistor and method of manufacturing the same 失效
    异质结双极晶体管及其制造方法

    公开(公告)号：US20070131971A1

    公开(公告)日：2007-06-14

    申请号：US11634614

    申请日：2006-12-06

    申请人： Yong Kim ,  Eun Nam ,  Ho Kim ,  Sang Lee ,  Dong Jun ,  Hong Lee ,  Seon Hong ,  Dong Kim ,  Jong Lim ,  Myoung Oh

    发明人： Yong Kim ,  Eun Nam ,  Ho Kim ,  Sang Lee ,  Dong Jun ,  Hong Lee ,  Seon Hong ,  Dong Kim ,  Jong Lim ,  Myoung Oh

    IPC分类号： H01L31/00

    CPC分类号： H01L29/7371 ,  H01L29/0817 ,  H01L29/41708 ,  H01L29/66318

    摘要： Provided are a hetero-junction bipolar transistor (HBT) that can increase data processing speed and a method of manufacturing the hetero-junction bipolar transistor. The HBT includes a semi-insulating compound substrate, a sub-collector layer formed on the semi-insulating compound substrate, a pair of collector electrodes disposed at a predetermined distance apart from each other on a predetermined portion of the sub-collector layer, a collector layer and a base layer disposed between the collector electrodes, a pair of base electrodes disposed at a predetermined distance apart from each other on a predetermined portion of the base layer, an emitter layer stack disposed between the base electrodes, and an emitter electrode that is formed on the emitter layer stack, and includes a portion having a line width wider than the line width of the emitter layer stack, wherein both sidewalls of the emitter electrode are respectively aligned with inner walls of the pair of base electrodes, and sidewalls of the collector layer and the base layer are located between outer sidewalls of the pair of base electrodes of the pair of base electrodes.

    摘要翻译： 提供了可以提高数据处理速度的异质结双极晶体管（HBT）和制造异质结双极晶体管的方法。 HBT包括半绝缘复合基板，形成在半绝缘复合基板上的副集电极层，在副集电极层的预定部分上彼此隔开预定距离设置的一对集电极， 集电极层和设置在集电极之间的基极层，在基极层的预定部分上彼此隔开预定距离设置的一对基底电极，设置在基极之间的发射极层叠层和发射极电极， 形成在发射极层堆叠上，并且包括具有比发射极层堆叠的线宽宽的线宽的部分，其中发射极电极的两个侧壁分别与一对基底电极的内壁对齐，并且侧壁 集电极层和基极层位于该对基极的一对基极的外侧壁之间。

    Preamble design for frequency offset estimation and channel equalization in burst OFDM transmission system
    3.
    发明授权
    Preamble design for frequency offset estimation and channel equalization in burst OFDM transmission system 有权
    用于突发OFDM传输系统中的频偏估计和信道均衡的前导码设计

    公开(公告)号：US07554902B2

    公开(公告)日：2009-06-30

    申请号：US10420693

    申请日：2003-04-23

    申请人： Ki-yun Kim ,  Ho Kim ,  Hyung-jin Choi

    发明人： Ki-yun Kim ,  Ho Kim ,  Hyung-jin Choi

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2607 ,  H04L27/2657 ,  H04L27/2675

    摘要： Provided is a transmission data frame in an orthogonal frequency division multiplexing (OFDM) burst mode transmission, and more particularly, a frequency offset estimating method and a channel equalizing method using a transmission data frame. In the transmission data frame used in the orthogonal frequency division multiplexing burst mode transmission, a length of a guard interval in a preamble area for frequency offset estimation and channel estimation varies depending on a channel environment not being limited in consideration of a size of a data symbol, and only data of ending part of the guard interval in the preamble is used to estimate frequency offset in consideration of intersymbol interference. In the frequency offset estimating method, desired frequency estimation efficiency can be satisfied with the small number of samples. Also, when channel equalization is performed, two symbols are averaged in a time area to reduce the accuracy of channel estimation due to Gaussian random noise. In a frequency area, by referring to weight placed on an adjacent subcarrier, a channel equalization coefficient is obtained to efficiently reduce Gaussian random noise.

    摘要翻译： 提供了正交频分复用（OFDM）突发模式传输中的发送数据帧，更具体地，使用使用发送数据帧的频率偏移估计方法和信道均衡方法。 在正交频分复用突发模式传输中使用的发送数据帧中，用于频偏估计和信道估计的前同步码区域中的保护间隔的长度根据不受数据大小限制的信道环境而变化 符号，并且仅使用前导码中的保护间隔的结束部分的数据来估计考虑码间干扰的频率偏移。 在频率偏移估计方法中，可以利用少量样本来满足期望的频率估计效率。 此外，当执行信道均衡时，在时间区域中平均两个符号以降低由于高斯随机噪声导致的信道估计的准确度。 在频率区域中，通过参考相邻子载波上的权重，获得信道均衡系数以有效地降低高斯随机噪声。

    Method and system for selecting a visited network to be used by a user equipment in a wireless communication system
    8.
    发明申请
    Method and system for selecting a visited network to be used by a user equipment in a wireless communication system 审中-公开
    用于选择由无线通信系统中的用户设备使用的被访问网络的方法和系统

    公开(公告)号：US20070184825A1

    公开(公告)日：2007-08-09

    申请号：US11651104

    申请日：2007-01-09

    申请人： Han-Na Lim ,  Chen-Ho Chin ,  Ho Kim ,  Sung-Ho Choi ,  O-Sok Song

    发明人： Han-Na Lim ,  Chen-Ho Chin ,  Ho Kim ,  Sung-Ho Choi ,  O-Sok Song

    IPC分类号： H04Q7/20

    CPC分类号： H04W8/06

    摘要： Preference of a home public land mobile network (HPLMN) is applied when a roaming user equipment (UE) selects a visited public land mobile network (VPLMN). The roaming UE sends an available VPLMN list to the HPLMN. A control message of a non-access stratum (NAS) or an application can be used to receive a preferred VPLMN list from the HPLMN or to send the preferred VPLMN list after the HPLMN requests that the UE should send the available VPLMN list or without a request. The HPLMN manages a VPLMN to be used by the roaming UE and enables a user to receive a better service.

    摘要翻译： 当漫游用户设备（UE）选择访问的公共陆地移动网络（VPLMN）时，应用家庭公共陆地移动网络（HPLMN）的优先权。 漫游UE向HPLMN发送可用的VPLMN列表。 可以使用非接入层（NAS）或应用的控制消息来从HPLMN接收优选的VPLMN列表，或者在HPLMN请求UE应该发送可用的VPLMN列表之后发送优选的VPLMN列表，或者不使用 请求。 HPLMN管理由漫游UE使用的VPLMN，并使用户能够接收更好的服务。

    Surface discharge type air cleaning device
    10.
    发明申请
    Surface discharge type air cleaning device 审中-公开
    表面排气式空气净化装置

    公开(公告)号：US20060056130A1

    公开(公告)日：2006-03-16

    申请号：US11224223

    申请日：2005-09-13

    申请人： Ho Kim ,  In Choi ,  Kwan Yum ,  Ho Choi

    发明人： Ho Kim ,  In Choi ,  Kwan Yum ,  Ho Choi

    IPC分类号： H01T23/00

    CPC分类号： F24F3/166 ,  A61L9/015 ,  A61L9/22 ,  B03C3/38 ,  B03C3/60 ,  B03C3/86 ,  F24F2003/1635 ,  F24F2003/1682 ,  Y02A50/21

    摘要： A surface discharge type air cleaning device comprises an insulating dielectric body formed in the shape of a sheet, and a discharge electrode and a ground electrode formed at one surface of the insulating dielectric body, the discharge electrode and the ground electrode being disposed in parallel with each other while the discharge electrode and the ground electrode are spaced a predetermined distance from each other. The discharge electrode has a plurality of pointed ends protruding toward the ground electrode. Consequently, electrical charge accumulation is prevented and continuous discharge is possible, even when a DC power source is used. In addition, entirely uniform and stable discharge at the surface of the dielectric body is accomplished, and therefore, the generated number of hydroxyl radicals and negative ions is increased while the generated amount of ozone is decreased. Also, discharge safety is increased, and therefore, air cleaning efficiency is improved.

    摘要翻译： 表面排出型空气净化装置包括形成为片状的绝缘电介质体，以及形成在绝缘电介质体的一个表面的放电电极和接地电极，放电电极和接地电极与 而放电电极和接地电极彼此隔开预定的距离。 放电电极具有向接地电极突出的多个尖端。 因此，即使在使用直流电源的情况下，也能够防止电荷蓄积，能够进行连续的放电。 此外，实现了在电介质体的表面完全均匀稳定的放电，因此，产生的羟基自由基和负离子的数量增加，同时臭氧的产生量减少。 此外，排放安全性增加，因此，空气净化效率提高。