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公开(公告)号：KR1020090087148A
公开(公告)日：2009-08-17
申请号：KR1020080012413
申请日：2008-02-12
Applicant: 전북대학교산학협력단
IPC: H03M13/11
CPC classification number: H03M13/1131 , H03M13/155 , H03M13/6508 , H03M13/6591
Abstract: A row splitting method lowering a code rate while maintaining a block length is provided to lower the code rate by spitting the rows of a main LDPC matrix. A central splitting method splits the 1 remaining in the row to be split and the 1 transferred on the newly generated row around the number of 1s. An alternative splitting method splits the 1 remaining in the row to be split and the 1 transferred on the newly generated row by dividing the position of the 1 into an odd position and an even position. An arbitrary splitting method splits the 1 remaining in the row and the 1 transferred on the newly generated row by selecting half of the number of 1s in the row to be split at random.
Abstract translation: 提供了一种在维持块长度的同时降低码率的行拆分方法，以通过吐出主LDPC矩阵的行来降低码率。 中央分割方法分割待分割的行中剩余的1个，并且新生成的行上传输的1围绕1的数目。 另一种分割方法是将待分割的行中剩下的1个划分出来，将1的位置分割为奇数位置和偶数位置，将新生成的行中的1个分割。 任意分割方法通过选择随机分割行中的1的数量的一半，分割行中剩余的1和新生成的行上传送的1。
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公开(公告)号：KR100989860B1
公开(公告)日：2010-10-29
申请号：KR1020080012413
申请日：2008-02-12
Applicant: 전북대학교산학협력단
IPC: H03M13/11
Abstract: 본 발명은 LDPC 부호에 대하여 블록 길이를 유지하면서 다양한 부호화율을 생성해 낼 수 있는 방법에 관한 것으로서, 본 발명을 이용하면 높은 부화화율을 가지는 부호룰 이용하여 동일한 블록 길이를 가지는 여러 개의 낮은 부호화율의 부호 생성이 가능하다. 근래의 디지털 통신 시스템은 다양한 부호화율을 가진 부호를 필요로 하는 경우가 많다. 패리티 검사 행렬을 이용하여 반복적으로 복호를 수행하는 LDPC 부호의 경우, 부호화율 별로 여러 개의 다른 패리티 검사 행렬을 적용한다면 시스템의 복잡도가 크게 증가할 것이다. 본 발명은 이러한 문제점을 해결하기 위하여 고안된 것으로 기존의 천공(punctruing)이나 shortening을 이용한 부호화율의 조절은 블록길이가 짧아진다는 단점을 가지고 있으므로, 행 분할 기법을 적용하여 블록의 길이를 그대로 유지하면서도 여러 개의 부호화율을 가지는 부호를 생성해 낼 수 있는 방법에 관한 것이다.
행 합산 기법, 행 분할 기법, LDPC 부호, 블록 길이-
公开(公告)号：KR1020080098150A
公开(公告)日：2008-11-07
申请号：KR1020070043466
申请日：2007-05-04
Applicant: 전북대학교산학협력단
CPC classification number: H04B17/336 , H04L1/0016 , H04L27/364
Abstract: A signal to noise ratio estimating system and an estimating method thereof calculate SNR(Signal To Noise Ratio) by using signals corresponding to the level higher than the fixed absolute value for the received signal modulated in a reception end of a digital communications system using a high level modulation system. A look up table generating unit(10) stores an SNR value for a channel state according to the modulation method and generates the look up table. An SNR estimating unit(20) initializes parameters required for the SNR estimation, and determines and records the received signal over the standard value. The SNR estimating unit calculates a look up table address stored in the look up table generating unit, and outputs the SNR value of the corresponding address.
Abstract translation: 一种信噪比估计系统及其估计方法，通过使用对应于高于固定绝对值的电平的信号来计算SNR（信噪比），该接收信号在使用高电平的数字通信系统的接收端调制的接收信号 电平调制系统。 查找表生成单元（10）根据调制方式存储信道状态的SNR值，并生成查询表。 SNR估计单元（20）初始化SNR估计所需的参数，并且确定并记录接收到的信号超过标准值。 SNR估计单元计算存储在查找表生成单元中的查找表地址，并输出相应地址的SNR值。
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Patent Agency Ranking
公开(公告)号：KR101299879B1
公开(公告)日：2013-08-23
申请号：KR1020120072106
申请日：2012-07-03
Applicant: 전북대학교산학협력단 , (주)유엔씨
IPC: A61B5/0404 , A61B5/0432 , H04B7/24
Abstract: PURPOSE: An electrocardiogram measuring device having a memo function and an electrocardiogram measuring method using the same are provided to improve the reliability of an electrocardiogram test by recording or writing a behavioral pattern of a user at a randomly set interval when a medical staff diagnoses an electrocardiogram measuring waveform. CONSTITUTION: An electrocardiogram measuring device includes an electrocardiogram measuring unit (330) measuring an electrocardiogram of a user by using multiple electrocardiogram measuring electrodes (307); an alarm unit (350) generating an alarm signal recognized by a sense organ of the user at a randomly set interval; a record unit (340) recording a behavioral pattern of the user during the time when the alarm signal is generated or any time the user wants; a storage unit (303) storing the measured electrocardiogram of the user and behavioral pattern time information; the electrocardiogram measuring electrode; an alarm output unit (313); a recording button (215); and a control unit (301) controlling an electrocardiogram signal and the recording unit. [Reference numerals] (213) Microphone; (215) Recording button; (301) Control unit; (303) Storage unit; (305) Amplification unit; (309) A/D converter; (311) Internal timer; (313) Alarm output unit; (321) Sound wave amplification unit; (323) Touch panel; (325) Interface
Abstract translation: 目的：提供具有记忆功能的心电图测量装置和使用其的心电图测量方法，以在医务人员诊断心电图时以随机设置的间隔记录或写入用户的行为模式来提高心电图测试的可靠性 测量波形。 构成：心电图测量装置包括通过使用多个心电图测量电极（307）测量使用者的心电图的心电图测量单元（330）。 警报单元（350），以随机设定的间隔生成由用户的感觉器官识别的报警信号; 记录单元（340），其在生成所述报警信号的时间或用户想要的任何时间记录用户的行为模式; 存储单元（303），存储所测量的用户的心电图和行为模式时间信息; 心电图测量电极; 报警输出单元（313）; 记录按钮（215）; 以及控制心电图信号和记录单元的控制单元（301）。 （213）麦克风; （215）录音按钮; （301）控制单元; （303）存储单元; （305）放大单元; （309）A / D转换器; （311）内部定时器; （313）报警输出单元; （321）声波放大单元; （323）触摸屏; （325）接口
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公开(公告)号：KR1020120104824A
公开(公告)日：2012-09-24
申请号：KR1020110022460
申请日：2011-03-14
Applicant: 한국전자통신연구원 , 전북대학교산학협력단
CPC classification number: H04L25/067 , H04L27/0008
Abstract: PURPOSE: A single demodulator for soft-decision bit detection is provided to reduce complexity by calculating a soft decision value of each bit only using one time simple distance calculation of a received symbol and a predetermined hard decision boundary value. CONSTITUTION: A demodulator calculates an I(In phase) channel value corresponding to a horizontal axis value and a Q(Quadrature) channel value corresponding to a vertical axis value in a process of mapping a symbol about a received signal by constellation(300). The demodulator determines the I channel value and the Q channel value as an initial soft-decision bit value for first and second bits(400). The demodulator cyclically calculates the initial soft-decision bit value for third and more bits based on the initial soft-decision bit value for the first and second bits(500). The demodulator multiplies a gain to all initial soft-decision bit values calculated by a detection flow chart(600). [Reference numerals] (300) Calculation of an I(In phase) channel value (Re{s}) and a Q(Quadrature) channel value (Im{s}) for a received signal; (400) Initial soft-decision bit value for first and second bits; b1=Re{S}, b2=Im{s}; (500) Repetitive calculation of the initial soft-decision bit value for a third bit based on the initial soft-decision bit value of the first and second bits; (600) Multiplying all calculated initial soft-decision bit values by a gain; bj=2/σ^2|H|bj,|
Abstract translation: 目的：提供用于软判决比特检测的单个解调器，以通过仅使用接收符号的一次简单距离计算和预定硬判决边界值来计算每个比特的软判决值来降低复杂度。 构成：在通过星座图（300）映射关于接收信号的符号的处理的过程中，解调器计算对应于水平轴值的I（相位）通道值和对应于垂直轴值的Q（正交）通道值。 解调器将I信道值和Q信道值确定为第一和第二比特（400）的初始软判决比特值。 解调器基于第一和第二比特（500）的初始软判决比特值，循环地计算第三和更多比特的初始软判决比特值。 解调器将增益乘以由检测流程图（600）计算的所有初始软判决比特值。 （附图标记）（300）对于接收信号计算I（同相）信道值（Re {s}）和Q（正交）信道值（Im {s}）; （400）第一位和第二位的初始软判决位值; b1 = Re {S}，b2 = Im {s}; （500）基于第一和第二比特的初始软判决比特值重复计算第三比特的初始软判定比特值; （600）将所有计算的初始软判决比特值乘以增益; BJ = 2 /σ^ 2 | H | BJ，| <= j的<= log2M
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6.发明公开오실로메트릭 방법과 케이-음 방법을 동시에 적용하는 무선데이터 전송 자동혈압 측정 장치 및 방법 无效基于OSCILLOMETRIC方法和K-SOUND方法的血液压力值自动测量和无线传输的装置和方法
公开(公告)号：KR1020100094059A
公开(公告)日：2010-08-26
申请号：KR1020090013295
申请日：2009-02-18
Applicant: 전북대학교산학협력단
IPC: A61B5/021 , A61B5/025 , A61B5/0225
Abstract: PURPOSE: An apparatus and a method for wireless data transmitting automatic blood-pressure measurement based on an oscillometric method and a K-sound method are provided to be adopted to a remote diagnosis and a home diagnosis by periodically transmitting blood-pressure values. CONSTITUTION: A pressure sensor(220) detects a pressurized absolute pressure and the oscillation waveform of an artery pulse. A contact microphone(120) including a piezo film is contacted with a position on which the artery pulse is generated, and is located in a cuff. The contact microphone detects a K-sound which is generated in case of the decompression of the cuff.
Abstract translation: 目的：提供一种基于示波法和K-sound方法的无线数据传输自动血压测量的装置和方法，用于通过周期性地传送血压值进行远程诊断和家庭诊断。 构成：压力传感器（220）检测加压绝对压力和动脉脉冲的振荡波形。 包括压电膜的接触式麦克风（120）与产生动脉脉搏的位置接触，并且位于袖带中。 接触式麦克风检测在袖带减压的情况下产生的K声。
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公开(公告)号：KR100867618B1
公开(公告)日：2008-11-10
申请号：KR1020070043466
申请日：2007-05-04
Applicant: 전북대학교산학협력단
Abstract: 본 발명은 신호 대 잡음비(Signal to Noise Ratio, SNR) 추정 방법에 관한 것으로, 더욱 상세하게는 고차원의 변조 방식을 사용하는 디지털 통신 시스템의 수신단에서 변조된 수신 신호에 대해 절대값의 크기가 일정한 레벨 이상에 해당하는 신호들을 이용하여 SNR를 효율적으로 계산할 수 있는 SNR 추정 방법에 관한 것이다.
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公开(公告)号：KR1020100094042A
公开(公告)日：2010-08-26
申请号：KR1020090013272
申请日：2009-02-18
Applicant: 전북대학교산학협력단
IPC: A61B7/04
Abstract: PURPOSE: An electronic stethoscope apparatus for wireless sound-transmission using a separable auscultating unit are provided to obtain quantative information related to heart-sound or lung-sound using a contact type microphone composed of a piezoelectric film. CONSTITUTION: A contact type microphone(110) detects heart-sound and lung-sound. A circuit unit(125) performs an analog and digital process with respect to the detected sound signal. A battery(135) supplies power. A speaker(130) outputs the processed sound signal which is obtained from the circuit unit. A connecting terminal(140) is connected with a main tube.
Abstract translation: 目的：提供一种使用分离式听诊单元进行无线声音传输的电子听诊器装置，以使用由压电薄膜构成的接触型麦克风来获得与心音或肺声相关的量化信息。 构成：接触式麦克风（110）检测心音和肺声。 电路单元（125）相对于检测到的声音信号执行模拟和数字处理。 电池（135）供电。 扬声器（130）输出从电路单元获得的已处理声音信号。 连接端子（140）与主管连接。
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