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1. 发明授权

US06871411B1 Automatic calibration method for use in electronic compass 失效
标题翻译：自动校准方法用于电子罗盘
公开(公告)号：US06871411B1
公开(公告)日：2005-03-29
申请号：US10757497
申请日：2004-01-15
申请人： Jin Yong Kang , Won Tae Choi , Chang Hyun Kim , Ha Woong Jeong , Han Chul Jo , Oh Jo Kwon
发明人： Jin Yong Kang , Won Tae Choi , Chang Hyun Kim , Ha Woong Jeong , Han Chul Jo , Oh Jo Kwon
IPC分类号： G01C17/32 , G01C17/38
CPC分类号： G01C17/38
摘要： An automatic calibration method for use in an electronic compass. Using the automatic calibration method, the electronic compass automatically calculates and corrects offset and scale values of a geomagnetic signal by detecting one rotation of a geomagnetic axis during a predetermined period of time. The electronic compass calculates an azimuth angle upon receiving geomagnetic data from the geomagnetic sensor, and finds maximum and minimum values of sensor signals of individual axes of the geomagnetic sensor using the received geomagnetic data such that it can correct or calibrate deviation of the azimuth angle. When a time consumed for calibration is the same or shorter than a maximum calibration effective time, the electronic compass determines whether a current state of the detected entry signal indicates a predetermined steady-state flow. If the current state indicates the steady-state flow, at the same time a signal indicative of one rotation of the geomagnetic sensor is received, and the time consumed for calibration is longer than a predetermined minimum calibration effective time, the electronic compass calculates offset and scale values using the maximum and minimum values and stores the calculated offset and scale values.
摘要翻译：一种用于电子罗盘的自动校准方法。使用自动校准方法，电子罗盘通过在预定时间段内检测地磁轴的一次旋转，自动计算和校正地磁信号的偏移和比例值。电子罗盘在从地磁传感器接收地磁数据时计算方位角，并使用接收到的地磁数据找出地磁传感器各个轴的传感器信号的最大值和最小值，使其可以校正或校准方位角的偏差。当校准消耗的时间与最大校准有效时间相同或更短时，电子罗盘确定检测到的进入信号的当前状态是否表示预定的稳态流。如果当前状态指示稳态流，则同时接收到表示地磁传感器一次旋转的信号，并且校准消耗的时间长于预定的最小校准有效时间，电子罗盘计算偏移和使用最大值和最小值进行比例值，并存储计算的偏移量和比例值。

2. 发明授权

US06937954B2 Signal processor for use in electronic compass 失效
标题翻译：信号处理器用于电子罗盘
公开(公告)号：US06937954B2
公开(公告)日：2005-08-30
申请号：US10660608
申请日：2003-09-12
申请人： Ha Woong Jeong , Won Tae Choi , Han Chul Jo , Jin Yong Kang , Chang Hyun Kim , Oh Jo Kwon
发明人： Ha Woong Jeong , Won Tae Choi , Han Chul Jo , Jin Yong Kang , Chang Hyun Kim , Oh Jo Kwon
IPC分类号： G01C17/28 , G01C17/00 , G01C17/32 , G01C17/38 , G01P21/00 , G01R15/00 , G01S17/00 , H03M1/10 , H03M1/12 , G06F19/00
CPC分类号： G01C17/00 , G01C17/38
摘要： In a signal processor for use in an electronic compass for controlling an offset voltage generated in an analog signal process and automatically controlling an amplification gain, an analog signal processor 52 amplifies signals Sx and Sy, and controls an offset voltage and amplitude A generated during an amplification process. An analog/digital (AD) converter 53 converts analog signals Vadcx and Vadcy from the analog signal processor 52 into a digital signal. A digital signal processor 54 measures a maximum value Vadc—max and a minimum value Vadc—min associated with the digital signal from the AD converter 53, and outputs, to the analog signal processor 52, an offset control signal Soc and a gain control signal Sgc based on the maximum value Vadc—max and minimum value Vadc—min. The signal processor can maintain levels of signals, to be inputted into the AD converter, to be within a reference voltage range.
摘要翻译：在用于控制在模拟信号处理中产生的偏移电压并自动控制放大增益的电子罗盘中的信号处理器中，模拟信号处理器52放大信号Sx和Sy，并且控制信号Sx和Sy产生的偏移电压和振幅A 放大过程。模拟/数字（AD）转换器53将模拟信号Vadcx和Vadcy从模拟信号处理器52转换为数字信号。数字信号处理器54测量最大值V SUB和最小值V adc最小值与AD转换器53的数字信号相关联的 - 分钟，并向模拟信号处理器52输出偏移控制信号Soc和增益控制信号Sgc，并且基于最大值V max和/或最小值V 。信号处理器可以将输入到AD转换器的信号电平保持在参考电压范围内。

3. 发明授权

US06957156B2 Method for searching for dip angle using tilt-compensated electronic compass 失效
标题翻译：使用倾斜补偿电子罗盘搜索倾角的方法
公开(公告)号：US06957156B2
公开(公告)日：2005-10-18
申请号：US10770503
申请日：2004-02-04
申请人： Han Chul Jo , Won Tae Choi , Chang Hyun Kim , Jin Yong Kang , Oh Jo Kwon , Ha Woong Jeong
发明人： Han Chul Jo , Won Tae Choi , Chang Hyun Kim , Jin Yong Kang , Oh Jo Kwon , Ha Woong Jeong
IPC分类号： G01C17/32 , G01C17/38 , G01F17/00
CPC分类号： G01C17/38
摘要： A method of finding a dip angle in a tilt-compensated electronic compass includes the steps of a) setting a predetermined azimuth angle indicative of a horizontal status of a geomagnetic sensor to a reference azimuth angle; b) if the compass is slightly tilted, stepwise-increasing a dip angle within a predetermined dip angle search range, and calculating azimuth angles associated with individual dip angles; c) comparing the calculated azimuth angles with the reference azimuth angle, and finding one azimuth angle, which is closest to the reference azimuth angle, among the calculated azimuth angles; and d) setting the dip angle applied to the closest azimuth angle to a specific dip angle associated with a corresponding azimuth angle, such that a more accurate azimuth angle can be detected by the on the basis of the calculated dip angle.
摘要翻译：在倾斜补偿电子罗盘中找到倾角的方法包括以下步骤：a）将指示地磁传感器的水平状态的预定方位角设置为参考方位角; b）如果指南针稍微倾斜，在预定倾角搜索范围内逐步增加倾角，并计算与各个倾角相关的方位角; c）将所计算的方位角与参考方位角进行比较，并找出最接近参考方位角的方位角之间的计算方位角; 以及d）将施加到最接近的方位角的倾角设置为与对应的方位角相关联的特定倾角，使得可以通过基于所计算的倾角来检测更准确的方位角。

4. 发明申请

US20110308159A1 Apparatus for detecting coordinates, and display device, security device, and electronic blackboard including the same 审中-公开
标题翻译：用于检测坐标的装置，显示装置，安全装置和包括其的电子黑板
公开(公告)号：US20110308159A1
公开(公告)日：2011-12-22
申请号：US13067678
申请日：2011-06-20
申请人： Jae Kwang Lee , Victor Yurlov , Won Tae Choi , Hyun Jun Kim , Jin Yong Kang
发明人： Jae Kwang Lee , Victor Yurlov , Won Tae Choi , Hyun Jun Kim , Jin Yong Kang
IPC分类号： E05F15/20 , G06F3/042
CPC分类号： G06F3/0423
摘要： There are provided an apparatus for detecting coordinates, which may detect coordinates corresponding to an event occurring within a region of interest, and a display device, a security device, and an electronic blackboard, each including the same. The apparatus for detecting coordinates, which is provided in at least one side of a touch panel having a preset region of interest being surrounded by a frame having a predetermined length, the apparatus comprising: a light source body providing preset light; a scanner emitting the light provided from the light source body at a preset angle to scan the region of interest, and receiving light reflected by the region of interest; a photo diode receiving reflected light to convert the received reflected light to a voltage value; and a beam splitter transmitting the light provided from the light source body to the scanner via a first path, and transmitting, to the photo diode via a second path, the reflected light received from the scanner.
摘要翻译：提供了一种用于检测坐标的装置，其可以检测对应于感兴趣区域内发生的事件的坐标，以及包括该坐标的显示装置，安全装置和电子黑板。用于检测坐标的装置，其设置在具有预定感兴趣区域的触摸面板的至少一侧，被具有预定长度的框架包围，所述装置包括：提供预设光的光源体; 扫描器，其以预定角度发射从光源主体提供的光，以扫描感兴趣区域，以及接收由感兴趣区域反射的光; 接收反射光的光电二极管将所接收的反射光转换为电压值; 以及分束器，其经由第一路径将从光源主体提供的光发送到扫描仪，并且经由第二路径将从扫描器接收的反射光发送到光电二极管。

5. 发明申请

US20100158094A1 APPARATUS AND METHOD FOR OFDM CHANNEL EQUALIZATION 失效
标题翻译：用于OFDM信道均衡的装置和方法
公开(公告)号：US20100158094A1
公开(公告)日：2010-06-24
申请号：US12492488
申请日：2009-06-26
申请人： Jin Yong Kang , Hyung Jin Choi , Se Bin Im , Kyung Doc Jang
发明人： Jin Yong Kang , Hyung Jin Choi , Se Bin Im , Kyung Doc Jang
IPC分类号： H04B1/10 , H03H7/30
CPC分类号： H04L25/0204 , H04L25/0242 , H04L25/03159 , H04L25/03821 , H04L27/2647 , H04L2025/0342
摘要： An apparatus and method for orthogonal frequency division multiplexing (OFDM) channel equalization are disclosed. The apparatus includes a compensation value setting unit setting a compensation value in the form of a diagonal matrix by use of a diagonal matrix of diagonal elements extracted from a channel matrix of an OFDM receiver, and a preset divergence suppression value, an initial estimation value calculation unit calculating an initial estimate value by use of a fast Fourier transform (FFT)-processed signal of the OFDM receiver and the compensation value, an equalization unit detecting a transmission signal to be processed by use of the compensation value, the channel matrix and the diagonal matrix, and a symbol decision unit determining a symbol for an adjacent signal of a transmission signal, which is to be processed among a plurality of signals output from the equalization unit, and providing the symbol-determined adjacent signal to the equalization unit.
摘要翻译：公开了一种用于正交频分复用（OFDM）信道均衡的装置和方法。该装置包括补偿值设定单元，其通过使用从OFDM接收器的信道矩阵提取的对角元素的对角矩阵和预设发散抑制值，初始估计值计算来设置对角矩阵形式的补偿值单元通过使用OFDM接收机的快速傅立叶变换（FFT）处理信号和补偿值来计算初始估计值，均衡单元，其通过使用补偿值来检测要处理的传输信号，信道矩阵和对角矩阵，以及符号判定单元，确定要从所述均衡单元输出的多个信号中处理的发送信号的相邻信号的符号，并将所述符号确定的相邻信号提供给所述均衡单元。

6. 发明授权

US08184753B2 Apparatus and method for OFDM channel equalization 失效
标题翻译： OFDM信道均衡的装置和方法
公开(公告)号：US08184753B2
公开(公告)日：2012-05-22
申请号：US12492488
申请日：2009-06-26
申请人： Jin Yong Kang , Hyung Jin Choi , Se Bin Im , Kyung Doc Jang
发明人： Jin Yong Kang , Hyung Jin Choi , Se Bin Im , Kyung Doc Jang
IPC分类号： H04B1/10
CPC分类号： H04L25/0204 , H04L25/0242 , H04L25/03159 , H04L25/03821 , H04L27/2647 , H04L2025/0342
摘要： An apparatus and method for orthogonal frequency division multiplexing (OFDM) channel equalization are disclosed. The apparatus includes a compensation value setting unit setting a compensation value in the form of a diagonal matrix by use of a diagonal matrix of diagonal elements extracted from a channel matrix of an OFDM receiver, and a preset divergence suppression value, an initial estimation value calculation unit calculating an initial estimate value by use of a fast Fourier transform (FFT)-processed signal of the OFDM receiver and the compensation value, an equalization unit detecting a transmission signal to be processed by use of the compensation value, the channel matrix and the diagonal matrix, and a symbol decision unit determining a symbol for an adjacent signal of a transmission signal, which is to be processed among a plurality of signals output from the equalization unit, and providing the symbol-determined adjacent signal to the equalization unit.
摘要翻译：公开了一种用于正交频分复用（OFDM）信道均衡的装置和方法。该装置包括补偿值设定单元，其通过使用从OFDM接收器的信道矩阵提取的对角元素的对角矩阵和预设发散抑制值，初始估计值计算来设置对角矩阵形式的补偿值单元通过使用OFDM接收机的快速傅立叶变换（FFT）处理信号和补偿值来计算初始估计值，均衡单元，其通过使用补偿值来检测要处理的传输信号，信道矩阵和对角矩阵，以及符号判定单元，确定要从所述均衡单元输出的多个信号中处理的发送信号的相邻信号的符号，并将所述符号确定的相邻信号提供给所述均衡单元。

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