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1. 发明申请

US20100158144A1 SAMPLING FREQUENCY OFFSET ESTIMATION APPARATUS AND METHOD OF OFDM SYSTEM 失效
标题翻译：采样频偏估计装置和OFDM系统的方法
公开(公告)号：US20100158144A1
公开(公告)日：2010-06-24
申请号：US12492282
申请日：2009-06-26
申请人： Jung Eun Youm , Hyung Jin Choi , Jung Soo Han , Kyung Hoon Won , Hyun Suk Lee , Jae Goon Aum
发明人： Jung Eun Youm , Hyung Jin Choi , Jung Soo Han , Kyung Hoon Won , Hyun Suk Lee , Jae Goon Aum
IPC分类号： H04L27/28
CPC分类号： H04L27/2657 , H04L5/0007 , H04L5/0048 , H04L25/0232 , H04L27/261 , H04L27/2675
摘要： A sampling frequency offset estimation apparatus of an orthogonal frequency division multiplexing (OFDM) system according to an aspect of the invention may include: a first differential operation unit performing complex conjugate multiplication of scattered pilots of complex symbols subjected to a fast Fourier transform (FFT) in an OFDM receiver; an interpolation unit repeating an operation of obtaining a median complex symbol between two consecutive symbols among complex symbols having first phase difference information from the first differential operation unit by a predetermined number; a second differential operation unit performing complex conjugate multiplication of two consecutive median complex symbols among median complex symbols from the interpolation unit; and a sampling frequency offset estimation unit estimating sampling frequency offset using complex symbols having second phase difference information from the second differential operation unit.
摘要翻译：根据本发明的一个方面的正交频分复用（OFDM）系统的采样频率偏移估计装置可以包括：执行经受快速傅立叶变换（FFT）的复码元的散射导频的复共轭乘法的第一差分运算单元，在OFDM接收机中; 内插单元，重复将来自所述第一差分运算单元的具有第一相位差信息的复数符号中的两个连续符号之间的中间复合符号的运算预定值; 第二差分运算单元，对来自所述插值单元的中值复符号中的两个连续中值复数符号进行复共轭乘法; 以及采样频率偏移估计单元，使用具有来自所述第二差分运算单元的第二相位差信息的复符号来估计采样频率偏移。

2. 发明授权

US08300717B2 Sampling frequency offset estimation apparatus and method of OFDM system 失效
标题翻译： OFDM系统的采样频偏估计装置及方法
公开(公告)号：US08300717B2
公开(公告)日：2012-10-30
申请号：US12492282
申请日：2009-06-26
申请人： Jung Eun Youm , Hyung Jin Choi , Jung Soo Han , Kyung Hoon Won , Hyun Suk Lee , Jae Goon Aum
发明人： Jung Eun Youm , Hyung Jin Choi , Jung Soo Han , Kyung Hoon Won , Hyun Suk Lee , Jae Goon Aum
IPC分类号： H04K1/10
CPC分类号： H04L27/2657 , H04L5/0007 , H04L5/0048 , H04L25/0232 , H04L27/261 , H04L27/2675
摘要： A sampling frequency offset estimation apparatus of an orthogonal frequency division multiplexing (OFDM) system includes a first differential operation unit performing complex conjugate multiplication of scattered pilots of complex symbols subjected to a fast Fourier transform (FFT) in an OFDM receiver, an interpolation unit repeating an operation of obtaining a median complex symbol between two consecutive symbols among complex symbols having first phase difference information from the first differential operation unit by a predetermined number, a second differential operation unit performing complex conjugate multiplication of two consecutive median complex symbols among median complex symbols from the interpolation unit, and a sampling frequency offset estimation unit estimating sampling frequency offset using complex symbols having second phase difference information from the second differential operation unit.
摘要翻译：正交频分复用（OFDM）系统的采样频率偏移估计装置包括：在OFDM接收机中进行快速傅里叶变换（FFT）的复数符号的散射导频的复共轭乘法的第一差分运算单元，重复在具有来自第一差分运算单元的第一相位差信息的复数符号中获得两个连续符号之间的中间复合符号预定数的操作;第二差分运算单元，执行中间复合符号中的两个连续中值复数符号的复共轭乘法以及采样频率偏移估计单元，使用具有来自第二差分运算单元的第二相位差信息的复数符号来估计采样频率偏移。

3. 发明授权

US08288963B2 LED driving circuit having error detection function 失效
标题翻译： LED驱动电路具有错误检测功能
公开(公告)号：US08288963B2
公开(公告)日：2012-10-16
申请号：US12823604
申请日：2010-06-25
申请人： Je Hyuk Ryu , Jung Eun Youm
发明人： Je Hyuk Ryu , Jung Eun Youm
IPC分类号： H05B37/00
CPC分类号： H05B33/0821 , G09G3/3426 , G09G2310/024 , G09G2320/064 , G09G2330/08 , G09G2330/12
摘要： There is provided an LED driving circuit. An LED driving circuit according to an aspect of the invention may include: a shift register separating dimming data and control data from serial peripheral interface (SPI) data and outputting the dimming data and the control data in predetermine data units; a scan register generating scan data according to the control data from the shift register; a first error detection unit detecting an error in the dimming data from the shift register; a second error detection unit detecting an error in the scan data from the scan register; and a logic operation unit performing an OR operation on an output signal from the first error detection unit and an output signal from the second error detection unit.
摘要翻译：提供了LED驱动电路。根据本发明的一个方面的LED驱动电路可以包括：移位寄存器，用于将调光数据和控制数据与串行外围接口（SPI）数据进行分离，并以预定的数据单位输出调光数据和控制数据; 扫描寄存器根据来自移位寄存器的控制数据产生扫描数据; 第一错误检测单元，检测来自移位寄存器的调光数据中的错误; 第二错误检测单元，检测来自扫描寄存器的扫描数据中的错误; 以及对来自第一错误检测单元的输出信号和来自第二错误检测单元的输出信号执行或运算的逻辑运算单元。

4. 发明申请

US20110133673A1 LED DRIVING CIRCUIT HAVING ERROR DETECTION FUNCTION 失效
标题翻译：具有错误检测功能的LED驱动电路
公开(公告)号：US20110133673A1
公开(公告)日：2011-06-09
申请号：US12823604
申请日：2010-06-25
申请人： Je Hyuk RYU , Jung Eun YOUM
发明人： Je Hyuk RYU , Jung Eun YOUM
IPC分类号： H05B37/02
CPC分类号： H05B33/0821 , G09G3/3426 , G09G2310/024 , G09G2320/064 , G09G2330/08 , G09G2330/12
摘要： There is provided an LED driving circuit. An LED driving circuit according to an aspect of the invention may include: a shift register separating dimming data and control data from serial peripheral interface (SPI) data and outputting the dimming data and the control data in predetermine data units; a scan register generating scan data according to the control data from the shift register; a first error detection unit detecting an error in the dimming data from the shift register; a second error detection unit detecting an error in the scan data from the scan register; and a logic operation unit performing an OR operation on an output signal from the first error detection unit and an output signal from the second error detection unit.
摘要翻译：提供了LED驱动电路。根据本发明的一个方面的LED驱动电路可以包括：移位寄存器，用于将调光数据和控制数据与串行外围接口（SPI）数据进行分离，并以预定的数据单位输出调光数据和控制数据; 扫描寄存器根据来自移位寄存器的控制数据产生扫描数据; 第一错误检测单元，检测来自移位寄存器的调光数据中的错误; 第二错误检测单元，检测来自扫描寄存器的扫描数据中的错误; 以及对来自第一错误检测单元的输出信号和来自第二错误检测单元的输出信号执行或运算的逻辑运算单元。

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