公开(公告)号：US08674627B2

公开(公告)日：2014-03-18

申请号：US13468330

申请日：2012-05-10

申请人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim

发明人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim

IPC分类号： H05B37/02 ,  H02M3/335

CPC分类号： H05B33/0815

摘要： An isolated flyback converter for an LED driver includes a snubber circuit unit connected to the primary side of a transformer; and a snubber voltage detection unit which detects a snubber voltage of the snubber circuit unit and generates a reference voltage proportional to the detected snubber voltage. Further, the isolated flyback converter includes a switching unit with a source terminal and a drain terminal, and may be turned on or off in response to an arbitrary logic signal. Furthermore, the isolated flyback converter includes a control unit which compares a voltage supplied through the switching current sensing resistor with the reference voltage, and supplies a logic signal at relatively high level or relatively low level to the switching unit to control the switching unit such that a secondary-side current of the transformer is maintained relatively constant.

摘要翻译： 用于LED驱动器的隔离反激转换器包括连接到变压器初级侧的缓冲电路单元; 以及缓冲电压检测单元，其检测缓冲电路单元的缓冲电压并产生与检测到的缓冲电压成比例的参考电压。 此外，隔离反激式转换器包括具有源极端子和漏极端子的开关单元，并且可以响应于任意逻辑信号而导通或关断。 此外，隔离反激式转换器包括：控制单元，其将通过开关电流检测电阻器提供的电压与参考电压进行比较，并将相对较高电平或相对低电平的逻辑信号提供给开关单元，以控制开关单元，使得 变压器的次级侧电流保持相对恒定。

公开(公告)号：US09190917B2

公开(公告)日：2015-11-17

申请号：US13472823

申请日：2012-05-16

申请人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim ,  SooHyun Moon ,  JongHa Shin ,  MinHo Jung ,  JunHong Lee

发明人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim ,  SooHyun Moon ,  JongHa Shin ,  MinHo Jung ,  JunHong Lee

IPC分类号： H05B37/02 ,  H02M3/335 ,  H05B33/08 ,  H02M1/42 ,  H02M1/00 ,  H02M1/34

CPC分类号： H02M3/33523 ,  H02M1/4258 ,  H02M2001/0009 ,  H02M2001/348 ,  H05B33/0815 ,  Y02B70/126

摘要： An isolated flyback converter for an LED driver may include: (1) A snubber circuit configured to be connected to the primary side of a transformer. (2) A switching unit configured to have a source terminal and a drain terminal and configured to be turned on or off. (3) A control unit configured to detect a first input signal proportional to a fluctuation in the power supply voltage, detect a second input signal when the switching unit is turned off, generate a signal inversely proportional to the maximum value of the first input signal and multiply the generated signal to the second input signal, and control a peak current of the switching unit to be proportional to the multiplication result of the signal inversely proportional to the maximum value of the first input signal and the second input signal such that a secondary-side current of the transformer is maintained constant.

摘要翻译： 用于LED驱动器的隔离反激式转换器可以包括：（1）缓冲电路，被配置为连接到变压器的初级侧。 （2）一种开关单元，被配置为具有源极端子和漏极端子并且被配置为导通或截止。 （3）一种控制单元，被配置为检测与电源电压的波动成比例的第一输入信号，当切换单元关闭时检测第二输入信号，产生与第一输入信号的最大值成反比的信号 并将所生成的信号与第二输入信号相乘，并且控制开关单元的峰值电流与与第一输入信号和第二输入信号的最大值成反比的信号的相乘结果成比例，使得次级 变压器的旁路电流保持恒定。

公开(公告)号：US20130033197A1

公开(公告)日：2013-02-07

申请号：US13468330

申请日：2012-05-10

申请人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim

发明人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim

IPC分类号： H05B41/282

CPC分类号： H05B33/0815

摘要： An isolated flyback converter for an LED driver includes a snubber circuit unit connected to the primary side of a transformer; and a snubber voltage detection unit which detects a snubber voltage of the snubber circuit unit and generates a reference voltage proportional to the detected snubber voltage. Further, the isolated flyback converter includes a switching unit with a source terminal and a drain terminal, and may be turned on or off in response to an arbitrary logic signal. Furthermore, the isolated flyback converter includes a control unit which compares a voltage supplied through the switching current sensing resistor with the reference voltage, and supplies a logic signal at relatively high level or relatively low level to the switching unit to control the switching unit such that a secondary-side current of the transformer is maintained relatively constant.

摘要翻译： 用于LED驱动器的隔离反激转换器包括连接到变压器初级侧的缓冲电路单元; 以及缓冲电压检测单元，其检测缓冲电路单元的缓冲电压并产生与检测到的缓冲电压成比例的参考电压。 此外，隔离反激式转换器包括具有源极端子和漏极端子的开关单元，并且可以响应于任意逻辑信号而导通或关断。 此外，隔离反激式转换器包括：控制单元，其将通过开关电流检测电阻器提供的电压与参考电压进行比较，并将相对较高电平或相对低电平的逻辑信号提供给开关单元，以控制开关单元，使得 变压器的次级侧电流保持相对恒定。

公开(公告)号：US20130063039A1

公开(公告)日：2013-03-14

申请号：US13472823

申请日：2012-05-16

申请人： Jong Tae HWANG ,  Moonsang Jung ,  Daeho Kim ,  SooHyun Moon ,  JongHa Shin ,  MinHo Jung ,  JunHong Lee

发明人： Jong Tae HWANG ,  Moonsang Jung ,  Daeho Kim ,  SooHyun Moon ,  JongHa Shin ,  MinHo Jung ,  JunHong Lee

IPC分类号： H05B37/02 ,  H02M3/335

CPC分类号： H02M3/33523 ,  H02M1/4258 ,  H02M2001/0009 ,  H02M2001/348 ,  H05B33/0815 ,  Y02B70/126

摘要： An isolated flyback converter for an LED driver may include: (1) A snubber circuit configured to be connected to the primary side of a transformer. (2) A switching unit configured to have a source terminal and a drain terminal and configured to be turned on or off. (3) A control unit configured to detect a first input signal proportional to a fluctuation in the power supply voltage, detect a second input signal when the switching unit is turned off, generate a signal inversely proportional to the maximum value of the first input signal and multiply the generated signal to the second input signal, and control a peak current of the switching unit to be proportional to the multiplication result of the signal inversely proportional to the maximum value of the first input signal and the second input signal such that a secondary-side current of the transformer is maintained constant.

摘要翻译： 用于LED驱动器的隔离反激式转换器可以包括：（1）缓冲电路，被配置为连接到变压器的初级侧。 （2）一种开关单元，被配置为具有源极端子和漏极端子并且被配置为导通或截止。 （3）一种控制单元，被配置为检测与电源电压的波动成比例的第一输入信号，当切换单元关闭时检测第二输入信号，产生与第一输入信号的最大值成反比的信号 并将所生成的信号与第二输入信号相乘，并且控制开关单元的峰值电流与与第一输入信号和第二输入信号的最大值成反比的信号的相乘结果成比例，使得次级 变压器的旁路电流保持恒定。

公开(公告)号：US08660204B2

公开(公告)日：2014-02-25

申请号：US13224639

申请日：2011-09-02

申请人： Chan Bok Jeong ,  Nam II Kim ,  Daeho Kim

发明人： Chan Bok Jeong ,  Nam II Kim ,  Daeho Kim

IPC分类号： H04L27/00

CPC分类号： G06F13/4243

摘要： Provided is a data transmission device and a symbol generation method of the same. A data processing unit of a data transmission device according to an embodiment of the present invention accesses a memory device for reading another data block while symbols for one data block are generated.

摘要翻译： 提供了一种数据发送装置及其符号生成方法。 根据本发明的实施例的数据传输设备的数据处理单元访问用于读取另一数据块的存储器件，同时产生用于一个数据块的符号。

公开(公告)号：US08593980B2

公开(公告)日：2013-11-26

申请号：US12873820

申请日：2010-09-01

申请人： Jung Sook Bae ,  Hyungu Hwang ,  Daeho Kim ,  Yeong Jin Kim

发明人： Jung Sook Bae ,  Hyungu Hwang ,  Daeho Kim ,  Yeong Jin Kim

IPC分类号： H04W4/00

CPC分类号： H04W52/282 ,  H04W52/12 ,  H04W52/146 ,  H04W52/362 ,  H04W52/54

摘要： A feedback generation method for uplink Transmit Power Control (TPC) in a mobile communication system is provided. A feedback generation system for uplink TPC includes an uplink information receiver to receive uplink information from a terminal, to measure a Signal-to-Interference Noise Ratio (SINR) value with respect to the received uplink information, and to measure a movement speed of the terminal, a transmission power adjustment value setting unit to set a transmission power adjustment value based on the movement speed of the terminal; an adjusted SINR calculator to calculate an adjusted SINR value, based on an expected SINR value and the measured SINR value; and a feedback information regenerator to regenerate feedback information based on the transmission power adjustment value and the adjusted SINR value, and to transmit the regenerated feedback information to the terminal.

摘要翻译： 提供了一种用于移动通信系统中的上行链路发射功率控制（TPC）的反馈产生方法。 用于上行链路TPC的反馈生成系统包括：上行链路信息接收器，用于从终端接收上行链路信息，以测量相对于所接收的上行链路信息的信号与干扰噪声比（SINR）值;以及测量所述上行链路信息的移动速度 终端，发送功率调整值设定单元，基于终端的移动速度来设定发送功率调整值; 基于预期的SINR值和所测量的SINR值来调整SINR计算器来计算调整SINR值; 以及反馈信息再生器，用于基于发送功率调整值和调整后的SINR值再生反馈信息，并将再生的反馈信息发送到终端。

公开(公告)号：US08520543B2

公开(公告)日：2013-08-27

申请号：US12969204

申请日：2010-12-15

申请人： Ok-Sun Park ,  Gi Yoon Park ,  Daeho Kim

发明人： Ok-Sun Park ,  Gi Yoon Park ,  Daeho Kim

IPC分类号： H04W72/04 ,  H04W72/12

CPC分类号： H04L1/0026 ,  H04L1/0006 ,  H04L1/0071 ,  H04L1/0073 ,  H04L1/1671

摘要： Provided is a data transmission system for transmitting control information from a terminal to a base station. The terminal may multiplex the control information, and may transmit the multiplexed control information to the base station using a plurality of transmit antennas. The base station may receive the multiplexed control information and combine the control information. The base station may transmit data to the terminal using the control information.

摘要翻译： 提供了一种用于从终端向基站发送控制信息的数据传输系统。 终端可以复用控制信息，并且可以使用多个发射天线将复用的控制信息发送到基站。 基站可以接收复用的控制信息并组合控制信息。 基站可以使用控制信息向终端发送数据。

公开(公告)号：US08862128B2

公开(公告)日：2014-10-14

申请号：US13230946

申请日：2011-09-13

申请人： Hyungu Hwang ,  Daeho Kim

发明人： Hyungu Hwang ,  Daeho Kim

IPC分类号： H04W4/00 ,  H04M3/00 ,  H04W48/16 ,  H04W48/14 ,  H04W8/24

CPC分类号： H04W4/001 ,  H04W4/50 ,  H04W8/245 ,  H04W48/14 ,  H04W48/16

摘要： Provided is a method for efficiently performing a communication operation using supplementary information. A communication method in an integrated terminal which communicates through communication modems corresponding to base stations of various communication systems includes reading a communication network information file which is updated and is included in the integrated terminal and performing the communication operation based on the read communication network information file.

摘要翻译： 提供了一种使用补充信息来有效地执行通信操作的方法。 在通过与各种通信系统的基站对应的通信调制解调器进行通信的集成终端中的通信方法包括读取更新并包含在集成终端中的通信网络信息文件，并且基于所读取的通信网络信息文件执行通信操作 。

公开(公告)号：US08630549B2

公开(公告)日：2014-01-14

申请号：US12574843

申请日：2009-10-07

申请人： Daeho Kim ,  Taegyu Kang ,  Sangkyu Lim ,  Taewan Kim ,  Myungae Chung ,  Sungwon Sohn

发明人： Daeho Kim ,  Taegyu Kang ,  Sangkyu Lim ,  Taewan Kim ,  Myungae Chung ,  Sungwon Sohn

IPC分类号： H04B10/00

CPC分类号： H04B10/116 ,  H04B10/1141

摘要： The visible light communication apparatus includes: a brightness signal generator that calculates a duty cycle of an driving signal corresponding to brightness requirement information and generates clock frequency information on brightness signals based on the calculated duty cycle; a transmission data generator that generates transmission data; an illumination driver that generates and outputs an driving signal in a pulse waveform based on the clock frequency information of the brightness signals and the transmission data and controls a pulse position of a turn on section for each bit unit time in the waveform of the driving signal based on the transmission data; and an illumination that is operated according to the driving signal from the illumination driver.

摘要翻译： 可见光通信装置包括：亮度信号发生器，其计算与亮度要求信息相对应的驱动信号的占空比，并基于所计算的占空比生成关于亮度信号的时钟频率信息; 发送数据生成器，生成发送数据; 照明驱动器，其基于亮度信号和发送数据的时钟频率信息生成并输出脉冲波形中的驱动信号，并且对驱动信号的波形中的每个位单位时间控制转向开度的脉冲位置 基于传输数据; 以及根据来自照明驱动器的驱动信号操作的照明。

公开(公告)号：US08565332B2

公开(公告)日：2013-10-22

申请号：US13017888

申请日：2011-01-31

申请人： Ok-Sun Park ,  Gi Yoon Park ,  Young Jo Ko ,  Daeho Kim

发明人： Ok-Sun Park ,  Gi Yoon Park ,  Young Jo Ko ,  Daeho Kim

IPC分类号： H04B7/02 ,  H04L1/02 ,  H04L7/00 ,  H04L23/00

CPC分类号： H04L25/03343 ,  H04L1/0001 ,  H04L1/20 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/0224

摘要： Provided are a fixed station receiver for a Multi-Input Multi-Output (MIMO) communication system and an uplink adaptation method thereof. In the uplink adaptation method, a sounding reference signal (SRS) is received from a terminal including a plurality of transmission antennas. A complex channel matrix (H) corresponding to a channel response and a noise variance (σ2) corresponding to a noise power is calculated from the sounding reference signal. A signal-to-interference and noise ratio (SINR) on each transmission symbol is calculated with reference to the complex channel matrix (H) and the noise variance (σ2). A pre-coding matrix of the terminal is selected with reference to the signal-to-interference and noise ratio (SINR).

摘要翻译： 提供了一种用于多输入多输出（MIMO）通信系统的固定站接收机及其上行链路适配方法。 在上行链路适配方法中，从包括多个发送天线的终端接收探测参考信号（SRS）。 从探测参考信号计算对应于信道响应的复杂信道矩阵（H）和对应于噪声功率的噪声方差（sigma2）。 参考复信道矩阵（H）和噪声方差（sigma2）计算每个传输符号上的信号与干扰和噪声比（SINR）。 参考信号与干扰和噪声比（SINR）来选择终端的预编码矩阵。