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公开(公告)号：KR100973013B1
公开(公告)日：2010-07-30
申请号：KR1020080130900
申请日：2008-12-22
Applicant: 삼성전기주식회사 , 성균관대학교산학협력단
CPC classification number: H04L27/2657 , H04L5/0007 , H04L5/0048 , H04L25/0232 , H04L27/261 , H04L27/2675
Abstract: 본 발명은 OFDM 시스템의 샘플링 주파수 옵셋 추정 장치에 관한 것으로, OFDM 수신기의 FFT 처리된 복소 심볼들 각각의 분산 파일럿을 해당 분산 파일럿의 공액 복소수와 곱하는 제1 미분 연산부(100); 상기 제1 미분 연산부(100)로부터 제1 위상차 정보를 갖는 복소 심볼중 연속되는 두 복소 심볼간의 절대치 크기의 중간값에 해당되는 중간값 복소 심볼을 구하는 과정을 기설정 반복회수 만큼 반복하는 보간부(200); 상기 보간부(200)로부터의 중간값 복소 심볼중 연속하는 두 중간값 복소 심볼을 공액 복소곱 연산하는 제2 미분 연산부(300); 및 상기 제2 미분 연산부(300)로부터 제2 위상차 정보를 갖는 복소 심볼을 이용하여 샘플링 주파수 옵셋을 추정하는 샘플링 주파수 옵셋 추정부를 포함한다.
또한, OFDM 시스템의 샘플링 주파수 옵셋 추정 방법을 제안한다.
샘플링 주파수, 주파수 옵셋, OFDM, 보간, 추정-
公开(公告)号：KR1020100072480A
公开(公告)日：2010-07-01
申请号：KR1020080130900
申请日：2008-12-22
Applicant: 삼성전기주식회사 , 성균관대학교산학협력단
CPC classification number: H04L27/2657 , H04L5/0007 , H04L5/0048 , H04L25/0232 , H04L27/261 , H04L27/2675 , H04L27/265 , H04L27/2695
Abstract: PURPOSE: A sampling frequency offset estimation device of an OFDM system and a method thereof are provided to reduce the noise power by adding the interpolative calculation between a first complex conjugate multiplication calculation and a second complex conjugate multiplication calculation about the signal processed the FFT. CONSTITUTION: A first differential calculation unit(100) calculates a complex symbol each scattered pilot processed FFT of an OFDM receiver the complex conjugate multiplication. An interpolator unit(200) repeats a process of obtaining the median complex symbol between continuing two complex symbols among the first phase difference information of the first differential calculation unit as preset repeating time. A second differential calculation unit(300) calculates continuing two median complex symbols among the median complex symbol of the interpolator unit as the complex conjugate multiplication. A sampling frequency offset estimation unit(400) estimates the sampling frequency offset by using the complex symbol for comprising the second phase difference information of the second differential calculation unit.
Abstract translation: 目的：提供OFDM系统的采样频率偏移估计装置及其方法，以通过在第一复共轭乘法运算和对处理FFT的信号的第二复共轭乘法运算之间加上内插计算来降低噪声功率。 构成：第一差分计算单元（100）计算OFDM接收机的每个分散导频处理的FFT的复数符号复共轭乘法。 内插器单元（200）重复将第一差分计算单元的第一相位差信息中的连续两个复数符号之间的中间复数符号作为预设重复时间的处理。 第二差分计算单元（300）计算内插器单元的中间复数符号中的连续两个中值复数符号作为复共轭乘法。 采样频率偏移估计单元（400）通过使用用于包括第二差分计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。
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公开(公告)号：KR100849811B1
公开(公告)日：2008-07-31
申请号：KR1020070098253
申请日：2007-09-28
Applicant: 삼성전기주식회사
CPC classification number: H04L27/2647 , H04L5/0048 , H04L27/2613 , H04L27/2662
Abstract: A method and an apparatus for detecting a spectrum inversion are provided to easily determine whether a spectrum is inverted by using only two successive symbols from FFT signals. A spectrum inversion of an FFT(Fast Fourier Transform) signal, which includes two successive symbols in an OFDM(Orthogonal Frequency Division Multiplexing) scheme, is detected. A pilot table(211) stores patterns of inversion and non-inversion pilots for a symbol signal. A correlator(212) calculates a non-inverted correlation value and an inverted correlation value. The non-inverted correlation value is obtained by correlating one of the successive symbols with a non-inverted pilot in the pilot table. The inverted correlation value is obtained by correlating the other of the successive symbols with the inverted pilot in the pilot table. A determining unit(213) compares the non-inverted and inverted correlation values with each other, and determines whether the spectrum is inverted.
Abstract translation: 提供了用于检测频谱反演的方法和装置，以便通过仅使用来自FFT信号的两个连续符号来容易地确定频谱是否被反转。 检测在OFDM（正交频分复用）方案中包括两个连续符号的FFT（快速傅里叶变换）信号的频谱反转。 导频表（211）存储用于符号信号的反相和非反相导频的模式。 相关器（212）计算非反相关值和反相关值。 通过将连续符号中的一个与导频表中的非反相导频相关来获得非反相关值。 通过将连续符号中的另一个与导频表中的反向导频相关来获得反相关值。 确定单元（213）将非反相和反相相关值彼此进行比较，并且确定频谱是否被反转。
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公开(公告)号：KR100900640B1
公开(公告)日：2009-06-02
申请号：KR1020070139457
申请日：2007-12-27
Applicant: 삼성전기주식회사
CPC classification number: H04L27/2657 , H04L27/2662
Abstract: An OFDM receiver of digital broadcasting receiving system is provided to improve the estimated performance of the frequency offset and to reduce the performance time. The OFDM(Orthogonal Frequency Division Multiplexing) receiver comprises a frequency offset correction(130), a FFT part(140), and channel equalization part(150) and a frequency offset/pilot location estimating part(200). The frequency offset correction amends the frequency offset by using an estimation value. The FFT part performs the fast Fourier transform on the signal received from the frequency offset correction. The channel equalization part compensates for the channel distortion of the received signal by using the scattered pilot positioning estimation value. The frequency offset/pilot location estimating part estimates the frequency offset and scattered pilot location. The estimating unit provides the frequency offset estimation value to the frequency offset correction. The estimating unit provides the pilot positioning estimation value to the channel equalization part.
Abstract translation: 提供了一种数字广播接收系统的OFDM接收机，以提高估计频率偏移的性能并降低演奏时间。 OFDM（正交频分复用）接收机包括频偏校正（130），FFT部分（140）和信道均衡部分（150）和频偏/导频位置估计部分（200）。 频率偏移校正通过使用估计值来修正频率偏移。 FFT部分对从频偏校正接收到的信号执行快速傅里叶变换。 信道均衡部分通过使用分散导频定位估计值来补偿接收信号的信道失真。 频率偏移/导频位置估计部分估计频率偏移和分散导频位置。 估计单元将频率偏移估计值提供给频偏校正。 估计单元向信道均衡部分提供导频定位估计值。
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公开(公告)号：KR1020140085098A
公开(公告)日：2014-07-07
申请号：KR1020120155295
申请日：2012-12-27
Applicant: 삼성전기주식회사
IPC: H02P6/18
Abstract: The present invention relates to a controlling method of a BLDC motor drive device which comprises the steps of aligning a rotor of the motor; storing aligning information of the rotor; determining whether the rotor is aligned or not; and aligning the rotor of the motor again based on the aligning information.
Abstract translation: 本发明涉及一种BLDC电动机驱动装置的控制方法，包括以下步骤：使电动机的转子对准; 存储转子的对准信息; 确定转子是否对准; 并且基于对准信息再次对准电动机的转子。
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Patent Agency Ranking
公开(公告)号：KR101388730B1
公开(公告)日：2014-04-25
申请号：KR1020120122297
申请日：2012-10-31
Applicant: 삼성전기주식회사
Abstract: The present invention relates to a circuit and a method for detecting duty ratio of a pulse width modulation (PWM) signal. The circuit for detecting duty ratio of a PWM signal of the present invention includes: a counting unit for counting PWM signals; a detection instruction determining unit for determining the input of a detection instruction signal which instructs a detection start regarding a duty ratio of the PWM signal; an edge detecting unit for detecting a PWM edge which is set in advance from the PWM signal; and a duty calculating unit for calculating the duty ratio of the PWM signal by using a count value of the counting unit regarding a section from a k^th time point (T(k), k is a natural number which is equal to or more than 1) at which the PWM edge is detected after determining the input of the detection instruction signal to a (k+1)^th time point (T(k+1)) at which the PWM edge is detected after determining the next input of the detection instruction signal. [Reference numerals] (100) Counting unit; (200) Detection instruction determining unit; (300) Edge detecting unit; (400) Duty calculating unit
Abstract translation: 本发明涉及一种用于检测脉冲宽度调制（PWM）信号的占空比的电路和方法。 用于检测本发明的PWM信号占空比的电路包括：用于对PWM信号进行计数的计数单元; 检测指令确定单元，用于确定指示关于PWM信号的占空比的检测开始的检测指令信号的输入; 边缘检测单元，用于检测从PWM信号预先设置的PWM边沿; 以及占空比计算单元，用于通过使用与第kk个时间点（T（k））相关的计数单元的计数值来计算PWM信号的占空比，k是等于或大于 1）在确定了检测指令信号的输入到确定了下一个输入的第（k + 1）^个时间点（T（k + 1））之后，检测到PWM沿被检测到 检测指令信号。 （附图标记）（100）计数单元; （200）检测指令确定单元; （300）边缘检测单元; （400）占空计算单元
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公开(公告)号：KR1020160118049A
公开(公告)日：2016-10-11
申请号：KR1020150046308
申请日：2015-04-01
Applicant: 삼성전기주식회사
Inventor： 염정은
IPC: H04L7/00
CPC classification number: H04N5/23248 , G06F17/30489
Abstract: 본발명은비동기식으로데이터가송수신되어도데이터의중복전송이방지될수 있는전자장치, 이의비동기방식데이터전송방법및 광학이미지안정화모듈에관한것으로, 데이터전송요청이입력된클럭에플래그(flag)를설정하여해당클럭에데이터중복요청을체크하고, 데이터중복요청이발생한경우일를알려데이터중복전송에의해발생하는데이터분석또는제어의오류를방지할수 있다.
Abstract translation: 提供了即使异步发送和接收数据也能防止重复数据传输的电子装置，异步发送数据的方法和光学图像稳定模块。 一种电子设备，包括：控制单元，被配置为根据主时钟信号请求数据传输;以及第一电路单元，被配置为根据第一时钟信号向控制单元发送与数据发送请求对应的数据，其中第一 时钟信号与主时钟信号异步，并且第一电路单元还被配置为在其中输入数据传输请求的第一时钟信号的周期期间设置标志以检查重复的数据请求。
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公开(公告)号：KR1020140049726A
公开(公告)日：2014-04-28
申请号：KR1020120115884
申请日：2012-10-18
Applicant: 삼성전기주식회사
Inventor： 염정은
IPC: H02P21/14
CPC classification number: G05B13/044 , H02P23/0027 , H02P23/20
Abstract: The present invention relates to an apparatus and a method for controlling a motor. The apparatus for controlling the motor of the present invention includes: a comparing unit for comparing a target value and an output value and calculating error values therefrom; and a controlling unit for controlling the motor by selecting one of a proportional control and a proportional integral control according to an average error value calculated by averaging the error values for each section having a predetermined interval, and adjusting a gain value of the selected control. [Reference numerals] (210) Calculation unit; (220) Control selection unit; (230) Gain control unit; (241) Proportional controller; (242) Proportional integral controller; (AA) Error value; (BB) Average error value
Abstract translation: 本发明涉及一种用于控制电动机的装置和方法。 用于控制本发明的电动机的装置包括：比较单元，用于比较目标值和输出值，并从其计算误差值; 以及控制单元，用于通过根据通过对具有预定间隔的每个区间的误差值进行平均而计算出的平均误差值来选择比例控制和比例积分控制中的一个，并且调整所选择的控制的增益值来控制电动机。 （附图标记）（210）计算单元; （220）控制选择单元; （230）增益控制单元; （241）比例控制器; （242）比例积分控制器; （AA）错误值; （BB）平均误差值
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公开(公告)号：KR101038852B1
公开(公告)日：2011-06-03
申请号：KR1020090121835
申请日：2009-12-09
Applicant: 삼성전기주식회사
IPC: H05B37/03
CPC classification number: H05B33/0821 , G09G3/3426 , G09G2310/024 , G09G2320/064 , G09G2330/08 , G09G2330/12
Abstract: PURPOSE: A light emitting diode driving circuit is provided to prevent the malfunction of a driving integrated circuit by detecting the generation of errors due to noises including electrostatic discharge or surge. CONSTITUTION: A shift register(200) outputs dimming data and control data by a pre-set data unit. A scan register(300) generates scan data according to the control data from the shift register. A first error detecting part(500) detects the error of the dimming data from the shift register. A second error detecting part detects the error of the scan data from the scan register. A logical operator generates a reset signal based on the logical sum operation of the output signals of the first error detecting part and the second error detecting part.
Abstract translation: 目的：提供一种发光二极管驱动电路，通过检测由于静电放电或浪涌等噪声引起的误差的产生，来防止驱动集成电路的故障。 构成：移位寄存器（200）通过预置数据单元输出调光数据和控制数据。 扫描寄存器（300）根据来自移位寄存器的控制数据产生扫描数据。 第一错误检测部分（500）检测来自移位寄存器的调光数据的误差。 第二个错误检测部分检测来自扫描寄存器的扫描数据的错误。 逻辑运算器基于第一错误检测部分和第二错误检测部分的输出信号的逻辑和操作产生复位信号。
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