公开(公告)号：US20120288767A1

公开(公告)日：2012-11-15

申请号：US13445896

申请日：2012-04-12

Applicant: Sung Nim JO ,  Mi Sun Lee ,  Hae In Cho

Inventor： Sung Nim JO ,  Mi Sun Lee ,  Hae In Cho

IPC: H01M4/505

CPC classification number: H01M4/131 ,  C01G45/1242 ,  C01P2002/32 ,  C01P2004/03 ,  C01P2004/61 ,  H01M4/1391 ,  H01M4/505 ,  H01M2004/021 ,  Y10T29/49108

Abstract: A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.

Abstract translation: 一种制备锂离子二次电池用锂锰氧化物正极活性物质的方法，其具有两种以上不同尺寸的球形尖晶石型锂锰氧化物粒子，该方法包括均匀混合具有两种以上不同类型的氧化锰 与含锂化合物的尺寸，并对所得混合物进行热处理以获得锂锰氧化物。

公开(公告)号：US08243430B2

公开(公告)日：2012-08-14

申请号：US12608409

申请日：2009-10-29

Applicant: Sung-Ho Ahn ,  Young-In Cho

Inventor： Sung-Ho Ahn ,  Young-In Cho

IPC: H05K7/16

CPC classification number: H04M1/0237 ,  G06F1/1616 ,  G06F1/1624 ,  G06F1/1681 ,  H04M1/0216

Abstract: A cradling device of a portable electronic apparatus, which includes a first housing, and a second housing which is slid from the first housing and then is cradled with a slant on the first housing. The second housing can rotate relative to the first housing. The cradling device includes a first member provided in the first housing; a slidable second member capable of sliding, which is provided in the second housing and faces the first member; and at least one cradling module provided in the first housing and the first member, which rotates the first member together with the second member on a rotation axis and cradles the second housing after sliding movement of the slidable second member.

Abstract translation: 一种便携式电子设备的摇篮装置，其包括第一壳体和第二壳体，该第二壳体从第一壳体滑动，然后在第一壳体上倾斜。 第二壳体可以相对于第一壳体旋转。 该装载装置包括设置在第一壳体中的第一构件; 能够滑动的可滑动的第二构件，其设置在所述第二壳体中并面向所述第一构件; 以及设置在所述第一壳体和所述第一构件中的至少一个支架模块，所述第一构件使所述第一构件与所述第二构件一起旋转，并且在所述可滑动的第二构件滑动运动之后使所述第二壳体旋转。

公开(公告)号：US20120083693A1

公开(公告)日：2012-04-05

申请号：US13248719

申请日：2011-09-29

Applicant: Sung In CHO

Inventor： Sung In CHO

IPC: A61B8/00

CPC classification number: A61B8/4427 ,  A61B8/46

Abstract: The present disclosure relates to a handheld ultrasonic diagnostic apparatus that includes a height adjustable rack stand. The apparatus includes a portable main body, and a rack stand that supports the main body such that the main body can be held at a preset height. The handheld ultrasonic diagnostic apparatus can be rapidly installed using the rack stand, thereby enabling a user to rapidly address an emergency situation using the apparatus.

Abstract translation: 本公开涉及一种包括高度可调架架的手持式超声波诊断装置。 该装置包括便携式主体和支撑主体的机架，使得主体能够保持在预设高度。 可以使用机架来快速安装手持超声波诊断装置，从而使得用户能够使用该装置快速解决紧急情况。

公开(公告)号：US08000397B2

公开(公告)日：2011-08-16

申请号：US12110708

申请日：2008-04-28

Applicant: Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

Inventor： Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

IPC: H04L27/28

CPC classification number: H04L27/2656 ,  H04B2001/71563 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

Abstract: Provided is a method and apparatus for acquiring OFDM synchronization even when it fails to detect a plurality of symbols at an initial stage. In the method, a frequency is adjusted to a first frequency band and a cross correlation value between a received preamble symbol and a preset preamble symbol is calculated. When the calculated cross correlation value is larger than a predetermined reference value and is first detected, frequency hopping is performed to receive subsequent symbols and cross correlation values to the subsequent symbols are reexamined. When the reexamined cross correlation value larger than the predetermined reference value is detected, timing synchronization, frequency offset estimation, and frame detection are performed.

Abstract translation: 提供了即使在初始阶段不能检测到多个符号的情况下也可以获取OFDM同步的方法和装置。 在该方法中，将频率调整为第一频带，并且计算所接收的前导码符号和预设前置码符号之间的互相关值。 当所计算的互相关值大于预定参考值并且被首先检测时，执行跳频以接收后续符号，并重新检查对后续符号的互相关值。 当检测到重新检查的大于预定参考值的互相关值时，执行定时同步，频率偏移估计和帧检测。

公开(公告)号：US20110151812A1

公开(公告)日：2011-06-23

申请号：US12839733

申请日：2010-07-20

Applicant: Kyu-Min KANG ,  Sang-In Cho ,  Heon-Jin Hong

Inventor： Kyu-Min KANG ,  Sang-In Cho ,  Heon-Jin Hong

IPC: H04B1/18

CPC classification number: H04B1/1027

Abstract: An apparatus for detecting a signal in a common frequency band includes: a signal processor configured to extract a selected band signal from received wireless signals by filtering the received wireless signal based on a frequency selection control signal, convert the extracted signal to a baseband signal, and detect a predetermined signal; a sensing signal determiner configured to determine existence of the signal, output a determination result, and outputs a frequency selection generating signal when the predetermined signal is absent; and a frequency selection controller configured to output the frequency selection control signal by selecting a target band among a plurality of previously decided bands.

Abstract translation: 用于检测公共频带中的信号的装置包括：信号处理器，被配置为基于频率选择控制信号对所接收的无线信号进行滤波，从接收到的无线信号中提取所选频带信号，将提取的信号转换为基带信号， 并检测预定信号; 感测信号确定器，被配置为确定信号的存在，输出确定结果，并且当所述预定信号不存在时，输出频率选择产生信号; 以及频率选择控制器，被配置为通过在多个先前确定的频带中选择目标频带来输出频率选择控制信号。

公开(公告)号：US07729238B2

公开(公告)日：2010-06-01

申请号：US11635272

申请日：2006-12-07

Applicant: Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi ,  Kwang-Roh Park

Inventor： Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi ,  Kwang-Roh Park

IPC: H04J11/00

CPC classification number: H04B1/7183 ,  H04L27/2605 ,  H04L27/265 ,  H04L27/2665

Abstract: Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.

Abstract translation: 提供了一种用于在多频带正交频分复用超宽带（MB-OFDM UWB）系统中调整快速傅里叶变换（FFT）窗口定位的方法。 该方法包括以下步骤：获取初始FFT窗口位置和跳频位置，通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号，将接收的数据信息发送到介质访问控制（ MAC）层，并且在MAC层判断基于帧检查序列（FCS）是否发生分组错误，并且如果没有发生分组错误，则返回到解调步骤，并且 如果发生分组错误，则通过使用MAC-物理层（MAC-PHY）接口中的预定接口线来改变寄存器映射，从而调整FFT窗口位置和跳频位置，然后返回到解调步骤。

公开(公告)号：US20100094920A1

公开(公告)日：2010-04-15

申请号：US12536240

申请日：2009-08-05

Applicant: Sang In Cho ,  Kyu-Min Kang ,  Sangsung Choi

Inventor： Sang In Cho ,  Kyu-Min Kang ,  Sangsung Choi

IPC: G06F17/14

CPC classification number: G06F17/142

Abstract: A Fourier transform device generates a first sequence according to an input sequence based on a stored lookup table, and generates an output sequence by performing a butterfly operation on the first sequence a plurality of times. Therefore, hardware capacity and power consumption of the Fourier transform device can be reduced

Abstract translation: 傅里叶变换装置根据存储的查找表根据输入序列生成第一序列，并且通过多次对第一序列执行蝶形运算来生成输出序列。 因此，可以降低傅里叶变换装置的硬件容量和功耗

公开(公告)号：US20090154529A1

公开(公告)日：2009-06-18

申请号：US12110708

申请日：2008-04-28

Applicant: Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

Inventor： Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi

IPC: H04B1/713

CPC classification number: H04L27/2656 ,  H04B2001/71563 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

Abstract: Provided is a method and apparatus for acquiring OFDM synchronization even when it fails to detect a plurality of symbols at an initial stage. In the method, a frequency is adjusted to a first frequency band and a cross correlation value between a received preamble symbol and a preset preamble symbol is calculated. When the calculated cross correlation value is larger than a predetermined reference value and is first detected, frequency hopping is performed to receive subsequent symbols and cross correlation values to the subsequent symbols are reexamined. When the reexamined cross correlation value larger than the predetermined reference value is detected, timing synchronization, frequency offset estimation, and frame detection are performed.

Abstract translation: 提供了即使在初始阶段不能检测到多个符号的情况下也可以获取OFDM同步的方法和装置。 在该方法中，将频率调整为第一频带，并且计算所接收的前导码符号和预设前置码符号之间的互相关值。 当所计算的互相关值大于预定参考值并且被首先检测时，执行跳频以接收后续符号，并重新检查对后续符号的互相关值。 当检测到重新检查的大于预定参考值的互相关值时，执行定时同步，频率偏移估计和帧检测。

公开(公告)号：US20090147667A1

公开(公告)日：2009-06-11

申请号：US12189931

申请日：2008-08-12

Applicant: Kyu-Min KANG ,  Sang-In Cho ,  Sangsung Choi

Inventor： Kyu-Min KANG ,  Sang-In Cho ,  Sangsung Choi

IPC: H04J11/00

CPC classification number: H04L27/2647

Abstract: Provided is an apparatus and method for detecting a packet of a zero-padded OFDM signal, which are capable of determining if a packet exists in a reception (RX) signal by comparing a cross-correlation value of an OFDM signal delayed by a predetermined sample time, e.g., a zero-padded sample time, with a power value of the RX signal, thereby increasing a packet detection probability and preventing a false alarm. The packet detecting apparatus includes: a cross-correlation calculator for calculating a cross-correlation value of a reception signal received from the outside and delaying the calculated cross-correlation value by a predetermined sample time; a power calculator for calculating a power value of the reception signal; and a packet detector for determining if a packet exists in the reception signal by comparing the delayed cross-correlation value with the calculated power value, and detecting the corresponding packet.

Abstract translation: 提供了一种检测零填充OFDM信号的分组的装置和方法，其能够通过比较延迟了预定样本的OFDM信号的互相关值来确定在接收（RX）信号中是否存在分组 时间，例如零填充采样时间，具有RX信号的功率值，从而增加分组检测概率并防止误报。 分组检测装置包括：互相关计算器，用于计算从外部接收的接收信号的互相关值，并将所计算的互相关值延迟预定采样时间; 功率计算器，用于计算接收信号的功率值; 以及分组检测器，用于通过将延迟的互相关值与所计算的功率值进行比较来确定接收信号中是否存在分组，并检测相应的分组。

公开(公告)号：US07260374B2

公开(公告)日：2007-08-21

申请号：US10841591

申请日：2004-05-06

Applicant: Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

Inventor： Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

IPC: H04B1/06

CPC classification number: H04W52/52 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/502 ,  H03G2201/702 ,  H04B1/71637

Abstract: Disclosed is a method for controlling power level of received signal in an ultra wide band transmission system which uses multi frequency bands, and includes a pre-gain controller (PGC) and a voltage gain amplifier (VGA). The method for controlling a power level of a received signal includes the steps of: a) at the PGCs, detecting which multi frequency band is used in a transmitter of the transmission system; b) at the PGCs, obtaining the voltage gain owing to the discrepancy in the power levels of the received signals; and c) at the PGCs, compensating for the power loss based on the voltage gain.

Abstract translation: 公开了一种在使用多频带的超宽带传输系统中控制接收信号的功率电平的方法，包括预增益控制器（PGC）和电压增益放大器（VGA）。 用于控制接收信号的功率电平的方法包括以下步骤：a）在PGC检测在传输系统的发射机中使用哪个多频带; b）在PGC处，由于接收到的信号的功率电平的差异而获得电压增益; 和c）在PGC处，基于电压增益来补偿功率损耗。