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    Systems and methods for switching mode power amplifier control
    72.
    发明授权
    Systems and methods for switching mode power amplifier control 有权
    用于开关模式功率放大器控制的系统和方法

    公开(公告)号：US07768353B2

    公开(公告)日：2010-08-03

    申请号：US12138965

    申请日：2008-06-13

    Applicant: Jaejoon Chang ,  Ki Seok Yang ,  Kyu Hwan An ,  Wangmyong Woo ,  Chang-Ho Lee ,  Younsuk Kim ,  Hyogun Bae ,  Kijoong Kim ,  Shinichi Iizuka

    Inventor： Jaejoon Chang ,  Ki Seok Yang ,  Kyu Hwan An ,  Wangmyong Woo ,  Chang-Ho Lee ,  Younsuk Kim ,  Hyogun Bae ,  Kijoong Kim ,  Shinichi Iizuka

    IPC: H03G3/10

    CPC classification number: H03F1/0272 ,  H03F3/24 ,  H03F2200/408 ,  H03F2200/411 ,  H03F2200/462

    Abstract: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.

    Abstract translation: 本发明的实施例可以提供用于功率放大器输出控制系统的增强系统和方法。 在示例实施例中，可以结合功率放大器控制来提供驱动器放大器控制，以提高发射机系统的功率效率和/或动态范围。 此外，对驱动器放大器的控制可以允许松弛的功率控制斜率，这可以减轻诸如蜂窝发射机系统的发射机系统中的数模转换器（DAC）的负担。 而且，根据本发明的示例性实施例的系统和方法可以提供对诸如温度，电池电源电压和实施IC过程的操作环境变化的较不敏感的解决方案。

    Systems and methods for determining sensing thresholds of a multi-resolution spectrum sensing (MRSS) technique for cognitive radio (CR) systems
    73.
    发明授权
    Systems and methods for determining sensing thresholds of a multi-resolution spectrum sensing (MRSS) technique for cognitive radio (CR) systems 有权
    用于确定用于认知无线电（CR）系统的多分辨率频谱感测（MRSS）技术的感测阈值的系统和方法

    公开(公告)号：US07768252B2

    公开(公告)日：2010-08-03

    申请号：US12034570

    申请日：2008-02-20

    Applicant: Jongmin Park ,  Kyutae Lim ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

    Inventor： Jongmin Park ,  Kyutae Lim ,  Chang-Ho Lee ,  Haksun Kim ,  Joy Laskar

    IPC: G01R23/00

    CPC classification number: H04W8/005 ,  H04W16/14 ,  H04W16/22

    Abstract: Systems and methods may be provided for threshold determinations for spectrum sensing. The systems and methods may include receiving a false alarm rate, where the false alarm rate is associated with false occupancy identifications of a spectrum segment, determining a noise floor as a function of a noise figure and characteristics of a multi-resolution spectrum sensing (MRSS) window, and calculating a sensing threshold based at least in part upon the false alarm rate and the noise floor. The systems and methods may also include determining whether a portion of an RF spectrum is occupied based at least in part on the calculated sensing threshold.

    Abstract translation: 可以提供用于频谱感测的阈值确定的系统和方法。 系统和方法可以包括接收误报率，其中误报率与频谱段的假占用标识相关联，确定作为噪声系数和多分辨率频谱感测特性（MRSS）的函数的本底噪声 ）窗口，并且至少部分地基于所述误报率和所述本底噪声来计算感测阈值。 系统和方法还可以包括至少部分地基于所计算的感测阈值来确定RF频谱的一部分是否被占用。

    Systems, Methods, and Apparatuses for Linear Envelope Elimination and Restoration Transmitters
    76.
    发明申请
    Systems, Methods, and Apparatuses for Linear Envelope Elimination and Restoration Transmitters 有权
    线性包络消除和恢复发射机的系统，方法和装置

    公开(公告)号：US20090174473A1

    公开(公告)日：2009-07-09

    申请号：US12406183

    申请日：2009-03-18

    Applicant: Wangmyong Woo ,  Chang-Ho Lee ,  Jaejoon Chang ,  Haksun Kim

    Inventor： Wangmyong Woo ,  Chang-Ho Lee ,  Jaejoon Chang ,  Haksun Kim

    IPC: H03F3/38

    CPC classification number: H03F3/24 ,  H03C5/00 ,  H03F1/0205 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3282 ,  H03F2200/102 ,  H03F2200/324 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2201/3233 ,  H04L27/361 ,  H04L27/368

    Abstract: Systems, methods, and apparatuses are provided for linear envelope elimination and restoration transmitters that are based on the polar modulation operating in conjunction with the orthogonal recursive predistortion technique. The polar modulation technique enhances the battery life by dynamically adjusting the bias level. Further, the analog orthogonal recursive predistortion efficiently corrects amplitude and phase errors in radio frequency (RF) power amplifiers (PA) and enhances the PA output capability. Additionally, even-order distortion components are used to predistort the input signal in a multiplicative manner so that the effective correction bandwidth is greatly enhanced. Also, the predistortion scheme, which uses instantaneously feed-backed envelope distortion signals, allows for correction of any distortion that may occur within the correction loop bandwidth, including envelope memory effects.

    Abstract translation: 提供了基于与正交递归预失真技术相结合的极坐标调制的线性包络消除和恢复发射机的系统，方法和装置。 极性调制技术通过动态调整偏置电平来提高电池寿命。 此外，模拟正交递归预失真有效地校正射频（RF）功率放大器（PA）中的幅度和相位误差，并增强了PA输出能力。 另外，偶数阶失真分量被用来以乘法方式对输入信号进行预失真，从而大大增强了有效的校正带宽。 此外，使用瞬时反馈包络失真信号的预失真方案允许校正可能发生在校正环路带宽内的任何失真，包括包络记忆效应。

    Heteroaromatic cycle-containing compound, method of preparing the same and organic light emitting device comprising the same
    77.
    发明申请
    Heteroaromatic cycle-containing compound, method of preparing the same and organic light emitting device comprising the same 审中-公开
    含杂芳环的化合物，其制备方法和包含该化合物的有机发光器件

    公开(公告)号：US20090153035A1

    公开(公告)日：2009-06-18

    申请号：US12213097

    申请日：2008-06-13

    Applicant: Jung-Han Shin ,  Seung-Gak Yang ,  Hee-Yeon Kim ,  Chang-Ho Lee ,  Hee-Joo Ko

    Inventor： Jung-Han Shin ,  Seung-Gak Yang ,  Hee-Yeon Kim ,  Chang-Ho Lee ,  Hee-Joo Ko

    IPC: H01J1/63 ,  C07D471/04 ,  C07D487/04

    CPC classification number: H01L51/0054 ,  C07D471/04 ,  C07D487/04 ,  H01L51/0072 ,  H01L51/5048 ,  H01L2251/308

    Abstract: Provided are a heteroaromatic cycle-containing compound used for an organic light emitting diode, represented by Formula 1: wherein X is N or C; Ar1 is a phenyl group, a C6-C20 aryl group, a C7-C20 arylalkyl group, a C7-C20 arylalkoxy group, a C6-C20 arylamino group, a C6-C20 heteroarylamino group, or a C2-C20 hetero ring group; and Ar2, Ar3 and Ar4 are each independently hydrogen, a cyano group, a hydroxyl group, a nitro group, halogen, phenyl, a C1-C20 alkyl group, a C1-C20 alkoxy group, a C6-C20 aryl group, a C7-C20 arylalkyl group, a C2-C20 alkylalkoxy group, a C7-C20 arylalkoxy group, a C6-C20 arylamino group, a C1-C20 alkylamino group, a C6-C20 heteroarylamino group, or a C2-C20 hetero ring group, wherein, when X is N, Ar4 is a lone electron pair, and when X is C, Ar3 and Ar4 are alternatively bound together to form a carbon ring.

    Abstract translation: 提供了用于由式1表示的有机发光二极管的含杂芳基的化合物：其中X是N或C; Ar1是苯基，C6-C20芳基，C7-C20芳烷基，C7-C20芳基烷氧基，C6-C20芳基氨基，C6-C20杂芳基氨基或C2-C20杂环基团; Ar2，Ar3和Ar4各自独立地为氢，氰基，羟基，硝基，卤素，苯基，C1-C20烷基，C1-C20烷氧基，C6-C20芳基，C7 -C 20芳烷基，C 2 -C 20烷基烷氧基，C 7 -C 20芳烷氧基，C 6 -C 20芳基氨基，C 1 -C 20烷基氨基，C 6 -C 20杂芳基氨基或C 2 -C 20杂环基，其中 当X为N时，Ar4为单电子对，当X为C时，Ar 3和Ar 4交替地结合在一起形成碳环。

    Heterocyclic compound and an organic light emitting device comprising the same
    78.
    发明申请
    Heterocyclic compound and an organic light emitting device comprising the same 有权
    杂环化合物和包含它们的有机发光器件

    公开(公告)号：US20090128013A1

    公开(公告)日：2009-05-21

    申请号：US12180015

    申请日：2008-07-25

    Applicant: Seok-Hwan Hwang ,  Young-Kook Kim ,  Yoon-Hyun Kwak ,  Chang-Ho Lee

    Inventor： Seok-Hwan Hwang ,  Young-Kook Kim ,  Yoon-Hyun Kwak ,  Chang-Ho Lee

    IPC: H01L51/52 ,  C07D487/14 ,  C07D401/14

    CPC classification number: H01L51/0072 ,  C07D487/04 ,  H01L51/0081 ,  H01L51/5012

    Abstract: A heterocyclic compound represented by Formula 1 below: X is selected from the group consisting of nitrogen, boron, and phosphorous; and Ar1, Ar2, Ar3 and Ar4 are each independently selected from the group consisting of a C6-C30 substituted or unsubstituted aryl group, a C6-C30 substituted or unsubstituted aryloxy group, a C4-C20 substituted or unsubstituted heterocyclic group, and a C6-C20 fused polycyclic group.The heterocyclic compound can be included in emission layers of top emission and bottom emission organic light emitting devices.

    Abstract translation: 由下式1表示的杂环化合物：X选自氮，硼和磷; Ar 1，Ar 2，Ar 3和Ar 4各自独立地选自C 6 -C 30取代或未取代的芳基，C 6 -C 30取代或未取代的芳氧基，C 4 -C 20取代或未取代的杂环基和C 6 -C 20稠合多环基团。 杂环化合物可以包括在顶部发射和底部发射有机发光器件的发射层中。

    Connector with a lever to couple a cap to a plug
    79.
    发明授权
    Connector with a lever to couple a cap to a plug 有权
    连接器，带有将盖子连接到插头上的杠杆

    公开(公告)号：US07479022B2

    公开(公告)日：2009-01-20

    申请号：US11861579

    申请日：2007-09-26

    Applicant: Chul-Sub Lee ,  Chang-Ho Lee

    Inventor： Chul-Sub Lee ,  Chang-Ho Lee

    IPC: H01R13/62

    CPC classification number: H01R13/62911 ,  H01R13/506 ,  H01R13/62927

    Abstract: A connector includes a cap detachably coupled to a plug in a coupling direction. The cap and the plug being electrically connected to each other. A lever is coupled to the plug. The lever is moveable linearly in a direction the same as the coupling direction. A coupling is actuated by the linear movement of the lever. The coupling draws and compulsorily presses the cap into the plug in the coupling direction to couple the cap and the plug.

    Abstract translation: 连接器包括在联接方向上可拆卸地联接到插头的盖。 盖和插头彼此电连接。 杠杆连接到插头。 杠杆在与联接方向相同的方向上线性移动。 通过杠杆的线性运动来致动联轴器。 联轴器拉动并强制地将盖子按联接方向按压到插头中以联接盖子和插头。

    Wideband I/Q signal generation device
    80.
    发明授权
    Wideband I/Q signal generation device 有权
    宽带I / Q信号发生装置

    公开(公告)号：US07454185B2

    公开(公告)日：2008-11-18

    申请号：US11089219

    申请日：2005-03-24

    Applicant: Yun-Seo Park ,  Sang-Hyun Woo ,  Hwan-Seok Song ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

    Inventor： Yun-Seo Park ,  Sang-Hyun Woo ,  Hwan-Seok Song ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

    IPC: H04B1/10

    CPC classification number: H03D7/165 ,  H03H7/20 ,  H03H7/21 ,  H03H2007/0192

    Abstract: An apparatus for generating an in-phase/quadrature-phase (I/Q) signal in a wireless transceiver is disclosed, including a local oscillator for generating an oscillation signal, and first and second mixers for mixing an oscillation signal with a transmission/reception signal to convert the transmission/reception signal into a baseband or high-frequency signal. The apparatus includes a phase locked circuit for controlling the local oscillator, and a polyphase filter installed between the local oscillator and the mixers, for separating the oscillation signal from the local oscillator into an I signal and a Q signal depending on a control signal from the phase locked circuit, and outputting the separated I and Q signals to the first and second mixers, respectively.

    Abstract translation: 公开了一种用于在无线收发机中产生同相/正交相（I / Q）信号的装置，包括用于产生振荡信号的本地振荡器，以及用于将振荡信号与发送/接收混合的第一和第二混频器 信号将发送/接收信号转换为基带或高频信号。 该装置包括用于控制本地振荡器的锁相电路和安装在本地振荡器和混频器之间的多相滤波器，用于将振荡信号与本地振荡器分离成I信号和Q信号，这取决于来自 并且将分离的I和Q信号分别输出到第一和第二混频器。

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