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    Beam steering devices including stacked liquid crystal polarization gratings and related methods of operation
    1.
    发明授权
    Beam steering devices including stacked liquid crystal polarization gratings and related methods of operation 有权
    光束转向装置包括堆叠液晶偏振光栅及相关操作方法

    公开(公告)号：US08982313B2

    公开(公告)日：2015-03-17

    申请号：US13387942

    申请日：2010-07-30

    申请人： Michael J. Escuti ,  Jihwan Kim ,  Chulwoo Oh ,  Steven Serati

    发明人： Michael J. Escuti ,  Jihwan Kim ,  Chulwoo Oh ,  Steven Serati

    IPC分类号： G02F1/13 ,  G02B27/28 ,  G02F1/1347 ,  G02F1/29

    CPC分类号： G02B27/286 ,  G02F1/1347 ,  G02F1/13476 ,  G02F1/292 ,  G02F2001/291 ,  G02F2201/16

    摘要： A beam steering apparatus includes a first beam steering stage and at least a second beam steering stage arranged in-line with the first beam steering stage. The first beam steering stage includes a first polarization grating comprising a uniaxial birefringent material having a first periodic director pattern, and the second beam steering stage includes a second polarization grating comprising a uniaxial birefringent material having a second periodic director pattern. In nonmechanical embodiments, a polarization selector may be arranged to provide a circularly polarized input beam incident on the first polarization grating. In mechanical embodiments, at least one of the first polarization grating and the second polarization grating may be operable to be independently rotated about an azimuth thereof. Related methods of operation are also discussed.

    摘要翻译： 光束转向装置包括第一光束转向平台和与第一光束转向平台成一直线排列的至少第二光束转向台。 第一光束转向平台包括第一偏振光栅，其包括具有第一周期性导向图图案的单轴双折射材料，第二光束转向平台包括具有第二周期性导向图形的单轴双折射材料的第二偏振光栅。 在非机械实施例中，偏振选择器可以被布置成提供入射在第一偏振光栅上的圆偏振输入光束。 在机械实施例中，第一偏振光栅和第二偏振光栅中的至少一个可以可操作地围绕其方位独立旋转。 还讨论了相关的操作方法。

    BEAM STEERING DEVICES INCLUDING STACKED LIQUID CRYSTAL POLARIZATION GRATINGS AND RELATED METHODS OF OPERATION
    2.
    发明申请
    BEAM STEERING DEVICES INCLUDING STACKED LIQUID CRYSTAL POLARIZATION GRATINGS AND RELATED METHODS OF OPERATION 有权
    束流转向装置，包括层压液晶极化光栅及其相关操作方法

    公开(公告)号：US20120188467A1

    公开(公告)日：2012-07-26

    申请号：US13387942

    申请日：2010-07-30

    申请人： Michael J. Escuti ,  Jihwan Kim ,  Chulwoo Oh ,  Steven Serati

    发明人： Michael J. Escuti ,  Jihwan Kim ,  Chulwoo Oh ,  Steven Serati

    IPC分类号： G02F1/1335 ,  G02B27/28

    CPC分类号： G02B27/286 ,  G02F1/1347 ,  G02F1/13476 ,  G02F1/292 ,  G02F2001/291 ,  G02F2201/16

    摘要： A beam steering apparatus includes a first beam steering stage and at least a second beam steering stage arranged in-line with the first beam steering stage. The first beam steering stage includes a first polarization grating comprising a uniaxial birefringent material having a first periodic director pattern, and the second beam steering stage includes a second polarization grating comprising a uniaxial birefringent material having a second periodic director pattern. In nonmechanical embodiments, a polarization selector may be arranged to provide a circularly polarized input beam incident on the first polarization grating. In mechanical embodiments, at least one of the first polarization grating and the second polarization grating may be operable to be independently rotated about an azimuth thereof. Related methods of operation are also discussed.

    摘要翻译： 光束转向装置包括第一光束转向平台和与第一光束转向平台成一直线排列的至少第二光束转向台。 第一光束转向平台包括第一偏振光栅，其包括具有第一周期性导向图图案的单轴双折射材料，第二光束转向平台包括具有第二周期性导向图形的单轴双折射材料的第二偏振光栅。 在非机械实施例中，偏振选择器可以被布置成提供入射在第一偏振光栅上的圆偏振输入光束。 在机械实施例中，第一偏振光栅和第二偏振光栅中的至少一个可以可操作地围绕其方位独立旋转。 还讨论了相关的操作方法。

    Polarization-Independent Liquid Crystal Display Devices Including Multiple Polarization Grating Arrangements and Related Devices
    3.
    发明申请
    Polarization-Independent Liquid Crystal Display Devices Including Multiple Polarization Grating Arrangements and Related Devices 有权
    包括多极化光栅布置和相关器件的极化独立液晶显示器件

    公开(公告)号：US20110242461A1

    公开(公告)日：2011-10-06

    申请号：US13122244

    申请日：2008-10-09

    申请人： Michael James Escuti ,  Chulwoo Oh ,  Ravi Komanduri ,  Brandon L. Conover ,  Jihwan Kim

    发明人： Michael James Escuti ,  Chulwoo Oh ,  Ravi Komanduri ,  Brandon L. Conover ,  Jihwan Kim

    IPC分类号： G02F1/1335

    CPC分类号： G02F1/133504 ,  G02F1/133524 ,  G02F1/133526 ,  G02F1/1393 ,  G02F2001/133543 ,  G02F2001/133742 ,  G02F2201/305 ,  G02F2203/06 ,  G03B21/006 ,  H04N9/3167

    摘要： A liquid crystal device includes a first polarization grating (101), a second polarization grating (102), and a liquid crystal layer (103). The first polarization grating (101) is configured to polarize and diffract incident light (190) into first and second beams (195,196) having different polarizations and different directions of propagation relative to that of the incident light (190). The liquid crystal layer (103) is configured to receive the first and second beams (195,196) from the first polarization grating (101). The liquid crystal layer (103) is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams (195,196) traveling therethrough, and a second state that alters the respective polarizations of the first and second beams (195,196) traveling therethrough. The second polarization grating (102) is configured to analyze and diffract the first and second beams (195,196) from the liquid crystal layer (103) to alter the different directions of propagation thereof in response to the state of the liquid crystal layer (103). Related devices are also discussed.

    摘要翻译： 液晶装置包括第一偏振光栅（101），第二偏振光栅（102）和液晶层（103）。 第一偏振光栅（101）被配置为将入射光（190）偏振并衍射成具有不同偏振和不同传播方向的第一和第二光束（195,196）相对于入射光（190）的偏振方向。 液晶层（103）被配置为从第一偏振光栅（101）接收第一和第二光束（195,196）。 液晶层（103）被配置为在基本上不影响穿过其中的第一和第二光束（195,196）的相应极化的第一状态之间切换，并且改变第一和第二光束的各自偏振的第二状态 （195,196）。 第二偏振光栅（102）被配置为响应于液晶层（103）的状态来分析和衍射来自液晶层（103）的第一和第二光束（195,196），以改变其不同的传播方向， 。 还讨论了相关设备。

    Polarization-independent liquid crystal display devices including multiple polarization grating arrangements and related devices
    4.
    发明授权
    Polarization-independent liquid crystal display devices including multiple polarization grating arrangements and related devices 有权
    包括多极化光栅布置和相关器件的极化独立液晶显示器件

    公开(公告)号：US08537310B2

    公开(公告)日：2013-09-17

    申请号：US13122244

    申请日：2008-10-09

    申请人： Michael James Escuti ,  Chulwoo Oh ,  Ravi Komanduri ,  Brandon L. Conover ,  Jihwan Kim

    发明人： Michael James Escuti ,  Chulwoo Oh ,  Ravi Komanduri ,  Brandon L. Conover ,  Jihwan Kim

    IPC分类号： G02F1/1335 ,  G02F1/13

    CPC分类号： G02F1/133504 ,  G02F1/133524 ,  G02F1/133526 ,  G02F1/1393 ,  G02F2001/133543 ,  G02F2001/133742 ,  G02F2201/305 ,  G02F2203/06 ,  G03B21/006 ,  H04N9/3167

    摘要： A liquid crystal device includes a first polarization grating (101), a second polarization grating (102), and a liquid crystal layer (103). The first polarization grating (101) is configured to polarize and diffract incident light (190) into first and second beams (195,196) having different polarizations and different directions of propagation relative to that of the incident light (190). The liquid crystal layer (103) is configured to receive the first and second beams (195,196) from the first polarization grating (101). The liquid crystal layer (103) is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams (195,196) traveling therethrough, and a second state that alters the respective polarizations of the first and second beams (195,196) traveling therethrough. The second polarization grating (102) is configured to analyze and diffract the first and second beams (195,196) from the liquid crystal layer (103) to alter the different directions of propagation thereof in response to the state of the liquid crystal layer (103). Related devices are also discussed.

    摘要翻译： 液晶装置包括第一偏振光栅（101），第二偏振光栅（102）和液晶层（103）。 第一偏振光栅（101）被配置为将入射光（190）偏振并衍射成具有不同偏振和不同传播方向的第一和第二光束（195,196）相对于入射光（190）的偏振方向。 液晶层（103）被配置为从第一偏振光栅（101）接收第一和第二光束（195,196）。 液晶层（103）被配置为在基本上不影响穿过其中的第一和第二光束（195,196）的相应极化的第一状态之间切换，并且改变第一和第二光束的各自偏振的第二状态 （195,196）。 第二偏振光栅（102）被配置为响应于液晶层（103）的状态来分析和衍射来自液晶层（103）的第一和第二光束（195,196），以改变其不同的传播方向， 。 还讨论了相关设备。

    Charge pumping apparatus using optimum power point tracking and method thereof
    5.
    发明授权
    Charge pumping apparatus using optimum power point tracking and method thereof 有权
    使用最佳功率点跟踪的电荷泵送装置及其方法

    公开(公告)号：US08854118B2

    公开(公告)日：2014-10-07

    申请号：US13593638

    申请日：2012-08-24

    申请人： Chul-Woo Kim ,  Jungmoon Kim ,  Jihwan Kim

    发明人： Chul-Woo Kim ,  Jungmoon Kim ,  Jihwan Kim

    IPC分类号： G05F1/10 ,  H02M3/07

    CPC分类号： H02M3/073 ,  H02J3/385 ,  H02M3/07 ,  H02M2001/0012 ,  Y02E10/58

    摘要： A charge pumping apparatus includes a voltage pumping unit for pumping an input voltage, a voltage pumping control unit for controlling the voltage pumping unit according to a comparison result between the input voltage and an input criterion voltage and a comparison result between an output voltage output from the voltage pumping unit and an output criterion voltage, and an optimum power point tracking unit for tracking an optimum power point in the case of detecting that the output voltage decreases lower than the output criterion voltage, and adjusting an input impedance to change the input criterion voltage to a voltage corresponding to the optimum power point, wherein the optimum power point is a power point where an input power according to the input voltage becomes a maximum. Since the optimum power point is tracked by measuring only a voltage without a current sensor, a power loss is small.

    摘要翻译： 电荷泵送装置包括用于泵浦输入电压的电压泵送单元，用于根据输入电压和输入基准电压之间的比较结果控制电压抽运单元的电压抽运控制单元，以及从 电压抽运单元和输出标准电压，以及用于在检测到输出电压降低到低于输出标准电压的情况下跟踪最佳功率点的最佳功率点跟踪单元，以及调整输入阻抗以改变输入标准 电压达到对应于最佳功率点的电压，其中最佳功率点是其中根据输入电压的输入功率变为最大值的功率点。 由于通过仅测量没有电流传感器的电压来跟踪最佳功率点，所以功率损耗小。

    CHARGE PUMPING APPARATUS USING OPTIMUM POWER POINT TRACKING AND METHOD THEREOF
    6.
    发明申请
    CHARGE PUMPING APPARATUS USING OPTIMUM POWER POINT TRACKING AND METHOD THEREOF 有权
    充电抽吸装置使用最佳功率点追踪及其方法

    公开(公告)号：US20130162335A1

    公开(公告)日：2013-06-27

    申请号：US13593638

    申请日：2012-08-24

    申请人： Chul-Woo Kim ,  Jungmoon Kim ,  Jihwan Kim

    发明人： Chul-Woo Kim ,  Jungmoon Kim ,  Jihwan Kim

    IPC分类号： G05F1/10

    CPC分类号： H02M3/073 ,  H02J3/385 ,  H02M3/07 ,  H02M2001/0012 ,  Y02E10/58

    摘要： A charge pumping apparatus includes a voltage pumping unit for pumping an input voltage, a voltage pumping control unit for controlling the voltage pumping unit according to a comparison result between the input voltage and an input criterion voltage and a comparison result between an output voltage output from the voltage pumping unit and an output criterion voltage, and an optimum power point tracking unit for tracking an optimum power point in the case of detecting that the output voltage decreases lower than the output criterion voltage, and adjusting an input impedance to change the input criterion voltage to a voltage corresponding to the optimum power point, wherein the optimum power point is a power point where an input power according to the input voltage becomes a maximum. Since the optimum power point is tracked by measuring only a voltage without a current sensor, a power loss is small.

    摘要翻译： 电荷泵送装置包括用于泵浦输入电压的电压泵送单元，用于根据输入电压和输入基准电压之间的比较结果控制电压抽运单元的电压抽运控制单元，以及从 电压抽运单元和输出标准电压，以及用于在检测到输出电压降低到低于输出标准电压的情况下跟踪最佳功率点的最佳功率点跟踪单元，以及调整输入阻抗以改变输入标准 电压达到对应于最佳功率点的电压，其中最佳功率点是其中根据输入电压的输入功率变为最大值的功率点。 由于通过仅测量没有电流传感器的电压来跟踪最佳功率点，所以功率损耗小。

    Scheduling in consideration of terminal groups in a mobile communication system
    8.
    发明授权
    Scheduling in consideration of terminal groups in a mobile communication system 有权
    考虑移动通信系统中的终端组进行调度

    公开(公告)号：US09253781B2

    公开(公告)日：2016-02-02

    申请号：US13820610

    申请日：2011-03-11

    申请人： Jihwan Kim ,  Byounghoon Kim ,  Song Chong ,  Jeonghoon Mo ,  Jaewon Lim ,  Jeongho Kwak

    发明人： Jihwan Kim ,  Byounghoon Kim ,  Song Chong ,  Jeonghoon Mo ,  Jaewon Lim ,  Jeongho Kwak

    IPC分类号： H04W72/00 ,  H04W72/04 ,  H04W72/12

    CPC分类号： H04W72/048 ,  H04W72/121

    摘要： Specifically, according to one embodiment of the present invention, a method for operating a base station that assigns frequency resources to terminals in a wireless communication system is provided. The method comprises the steps of calculating a first metric using information relating to the transmission rate of each terminal; calculating a second metric using information relating to a proportion of a group to which each of the terminals belongs; determining a terminal to which a frequency resource is assigned on the basis of the calculated first and second metrics; assigning the resource to the determined terminal; and updating the information relating to the transmission rate for each terminal and the information relating to proportion of a group.

    摘要翻译： 具体地，根据本发明的一个实施例，提供了一种用于操作向无线通信系统中的终端分配频率资源的基站的方法。 该方法包括以下步骤：使用与每个终端的传输速率有关的信息来计算第一度量; 使用与每个终端所属的组的比例相关的信息来计算第二度量; 基于计算出的第一和第二度量确定分配频率资源的终端; 将资源分配给所确定的终端; 并且更新与每个终端的传输速率有关的信息以及与组的比例有关的信息。

    METHOD AND DEVICE FOR REMOVING INTER-CELL INTERFERENCE OF AN ACCESS POINT IN A WIRELESS ACCESS SYSTEM
    10.
    发明申请
    METHOD AND DEVICE FOR REMOVING INTER-CELL INTERFERENCE OF AN ACCESS POINT IN A WIRELESS ACCESS SYSTEM 有权
    用于在无线接入系统中去除接入点的小区间干扰的方法和设备

    公开(公告)号：US20130315091A1

    公开(公告)日：2013-11-28

    申请号：US13982086

    申请日：2011-12-14

    申请人： Jaewon Lim ,  Jeonghoon Mo ,  Jihwan Kim ,  Jeongho Kwak ,  Byounghoon Kim ,  Song Chong

    发明人： Jaewon Lim ,  Jeonghoon Mo ,  Jihwan Kim ,  Jeongho Kwak ,  Byounghoon Kim ,  Song Chong

    IPC分类号： H04W72/08

    CPC分类号： H04W72/082 ,  H04W16/10 ,  H04W24/10 ,  H04W28/04 ,  H04W88/08 ,  H04W92/20

    摘要： The present application relates to a method for central node (CN) to remove inter-cell interference of an access point (AP) in a wireless access system according to the present invention, including: receiving feedback information at each time slot from a plurality of APs, the feedback information including channel measurement information between terminals in each AP and the coverage of each AP, or position information of each AP; obtaining a preference for each pattern, the pattern representing an ON or OFF operation of each AP at each time slot; determining a target time rate of each pattern on the basis of the obtained preference for each pattern; receiving an instantaneous transfer rate of terminals in the coverage of each AP for each pattern from the plurality of APs; and determining a pattern in order to minimize reference between each AP according to the received instantaneous transfer rate.

    摘要翻译： 本申请涉及一种中央节点（CN）在根据本发明的无线接入系统中去除接入点（AP）的小区间干扰的方法，包括：从多个 AP，反馈信息包括每个AP中的终端之间的信道测量信息和每个AP的覆盖范围，或每个AP的位置信息; 获得每个图案的偏好，所述图案表示每个时隙处的每个AP的ON或OFF操作; 基于获得的每个模式的偏好来确定每个模式的目标时间速率; 从所述多个AP接收针对每个模式的每个AP的覆盖范围内的终端的瞬时传送速率; 以及确定模式以便根据所接收的瞬时传送速率来最小化每个AP之间的参考。