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    • 31. 发明申请
    • GPS receiver and method for detecting a jammer signal using fast fourier transform
    • GPS接收机和使用快速傅里叶变换检测干扰信号的方法
    • US20050285781A1
    • 2005-12-29
    • US11110803
    • 2005-04-21
    • Chan-Woo ParkSun Choi
    • Chan-Woo ParkSun Choi
    • G01S1/00G01S19/11G01S19/21G01S19/25G01S19/29G01S19/37G01S5/14
    • H04K3/22G01S19/21G01S19/254G01S19/29H04K3/90
    • A global positioning system (GPS) receiver and method are provided for detecting a jammer signal using fast Fourier transform (FFT). A correlator correlates GPS signals received from GPS satellites with codes based on a plurality of carrier frequency signals having predetermined frequency offsets therebetween, and computes n correlated samples associated with each of the GPS satellites. A memory stores the n correlated samples associated with each of the GPS satellites and n FFT bins corresponding thereto. A FFT processor transforms the n correlated samples read from the memory using n-point FFT to obtain the n FFT bins, and transfers the n FFT bins to the memory. A peak detector detects largest peaks exceeding a lowered detection threshold from the FFT bins associated with each of the GPS satellites. A jammer detection unit makes a determination as to whether a peak relatively far away from other peaks is present among the largest peaks, and detects a signal of a peak far away from other peaks.
    • 提供了一种全球定位系统(GPS)接收机和方法,用于使用快速傅里叶变换(FFT)来检测干扰信号。 相关器将从GPS卫星接收的GPS信号与其间具有预定频率偏移的多个载波频率信号的码相关联,并且计算与每个GPS卫星相关联的n个相关采样。 存储器存储与每个GPS卫星相关联的n个相关样本和与其相对应的n个FFT仓。 FFT处理器使用n点FFT对从存储器读取的n个相关样本进行变换,以获得n个FFT仓,并将n个FFT仓传送到存储器。 峰值检测器从与每个GPS卫星相关联的FFT仓中检测超过低于检测阈值的最大峰值。 干扰检测单元确定在最大峰值中是否存在与其他峰值相对较远的峰值,并且检测远离其它峰值的峰值的信号。
    • 32. 发明授权
    • Cylindrical secondary battery
    • 圆柱二次电池
    • US09023500B2
    • 2015-05-05
    • US12923564
    • 2010-09-28
    • Jong-Ku KimByung-Lyang LeeJune-Hyoung ParkChan-Woo Park
    • Jong-Ku KimByung-Lyang LeeJune-Hyoung ParkChan-Woo Park
    • H01M4/00H01M2/36H01M2/04H01M2/12H01M10/04
    • H01M2/361H01M2/0413H01M2/12H01M10/0422
    • A cylindrical secondary battery including a battery unit including a wound first electrode plate, separator, and second electrode plate, and first and second electrode tabs respectively protruding from the first and second electrode plates; a can for accommodating the battery unit; a cap assembly for sealing an opening of the can; and a first insulation plate in the can and on an upper portion of the battery unit, the first insulation plate being configured to prevent a short between the first electrode tab and the second electrode plate having different polarities, wherein the first insulation plate includes a linear small aperture through which the first electrode tab extends and a circular small aperture for injection of an electrolyte, and the linear and circular small apertures are disposed in a region equal to or less than 50% of the first insulation plate.
    • 包括电池单元的圆柱形二次电池,包括卷绕的第一电极板,隔板和第二电极板,以及分别从第一和第二电极板突出的第一和第二电极接片; 容纳电池单元的罐; 用于密封罐的开口的盖组件; 以及在所述电池单元的罐体中和所述电池单元的上部的第一绝缘板,所述第一绝缘板被配置为防止所述第一电极接线片和具有不同极性的所述第二电极板之间的短路,其中所述第一绝缘板包括线性 第一电极片延伸穿过的小孔径和用于注入电解质的圆形小孔,并且线性和圆形小孔设置在等于或小于第一绝缘板的50%的区域中。
    • 36. 发明授权
    • High sensitivity GPS receiver and method for compensating for Doppler variation
    • 高灵敏度GPS接收机和补偿多普勒变化的方法
    • US07391366B2
    • 2008-06-24
    • US11138388
    • 2005-05-27
    • Chan-Woo ParkSun Choi
    • Chan-Woo ParkSun Choi
    • G01S5/14H04B7/185
    • G01S19/29G01S19/254G01S19/26
    • A global positioning system (GPS) receiver and method are provided for compensating for Doppler variation to accurately detect GPS signals in an environment in which intensities of the GPS signals received from GPS satellites are very low. A user acceleration measuring unit measures an acceleration vector of the terminal with respect to a center of the Earth. A user Doppler variation rate estimator estimates a user Doppler variation rate of each GPS satellite due to acceleration of the terminal by making use of the measured acceleration vector. A Doppler predictor predicts a Doppler frequency according to the estimated user Doppler variation rate. Code and carrier frequency signal generators compensate codes and carriers of GPS satellites to be correlated with signals received therefrom by making use of the predicted Doppler frequency.
    • 提供了一种全球定位系统(GPS)接收机和方法,用于补偿多普勒变化,以便在从GPS卫星接收的GPS信号的强度非常低的环境中精确检测GPS信号。 用户加速度测量单元测量终端相对于地球中心的加速度矢量。 用户多普勒变化率估计器通过利用所测量的加速度矢量来估计由于终端的加速而导致的每个GPS卫星的用户多普勒变化率。 多普勒预测器根据估计的用户多普勒变化率预测多普勒频率。 代码和载波频率信号发生器通过利用预测的多普勒频率来补偿GPS卫星的代码和载波与要从其接收的信号相关联。
    • 37. 发明授权
    • Buffer capable of controlling slew rate in drive IC
    • 缓冲器能够控制驱动IC中的转换速率
    • US07295054B2
    • 2007-11-13
    • US10990863
    • 2004-11-18
    • Byung-Hoon KimKyoung-Soo KwonChae-Dong GoChan-Woo Park
    • Byung-Hoon KimKyoung-Soo KwonChae-Dong GoChan-Woo Park
    • H03K5/12
    • H03F3/45H03F3/347H03F2203/45248
    • The present invention relates generally to a buffer of a drive Integrated Circuit (IC) and, more particularly, to a buffer of a drive IC for driving a spatial light modulator that can meet a desired dynamic slew rate characteristic by controlling current that affects a slew rate. The buffer capable of controlling the slew rate includes a first amplifier connected to the output terminal of the Digital/Analog (D/A) converter of an IC, and adapted to receive output voltage of the D/A converter and inversely amplify the output voltage, a second amplifier adapted to again inversely amplify output voltage that has been inversely amplified by the first amplifier, a charging means connected to the output and input terminals of the second amplifier, and adapted to be charged with the output voltage of the first amplifier, and a current control unit connected to the output terminal of the first amplifier and the input terminal of the second amplifier, and adapted to control the output voltage of the current control unit.
    • 本发明一般涉及驱动集成电路(IC)的缓冲器,更具体地说,涉及用于驱动空间光调制器的驱动IC的缓冲器,该缓冲器可以通过控制影响转子的电流来满足期望的动态转换速率特性 率。 能够控制转换速率的缓冲器包括连接到IC的数/模(D / A)转换器的输出端的第一放大器,并适于接收D / A转换器的输出电压并反相放大输出电压 ,第二放大器,其适于再次反相放大由第一放大器反相放大的输出电压;充电装置,连接到第二放大器的输出端和输入端,并且适于对第一放大器的输出电压进行充电; 以及电流控制单元,连接到第一放大器的输出端子和第二放大器的输入端子,并且适于控制电流控制单元的输出电压。
    • 39. 发明申请
    • Apparatus and method for maintaining time synchronization in AGPS receiver
    • 在AGPS接收机中保持时间同步的装置和方法
    • US20060170589A1
    • 2006-08-03
    • US11340610
    • 2006-01-27
    • Chan-Woo ParkSun ChoiKi-Hyun Park
    • Chan-Woo ParkSun ChoiKi-Hyun Park
    • G01S5/14
    • G01S19/25
    • An apparatus and method are provided for obtaining a location of a CDMA personal portable terminal according to an AGPS scheme. The method includes receiving a Doppler value of a satellite from an AGPS server, receiving a satellite signal and measuring a Doppler value of the satellite by using the received satellite signal, calculating a code frequency bias ψb by using a difference between the received Doppler value and the measured Doppler value, calculating a code bias φb in consideration of the calculated code frequency bias ψb and a search duration, and calculating a pseudorange of the satellite by compensating for the calculated code bias φb.
    • 提供了一种用于根据AGPS方案获得CDMA个人便携式终端的位置的装置和方法。 该方法包括从AGPS服务器接收卫星的多普勒值,接收卫星信号并通过使用接收到的卫星信号测量卫星的多普勒值,通过使用接收的卫星信号计算码频率偏差psi 考虑到计算出的代码频率偏差psi< b>和搜索持续时间,计算接收到的多普勒值和所测量的多普勒值之间的差值,计算代码偏差phi 通过补偿计算出的代码偏差phi< b>的卫星的伪距。