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    • 52. 发明授权
    • Motion estimation apparatus and method for moving picture coding
    • 运动估计装置及运动图像编码方法
    • US08139643B2
    • 2012-03-20
    • US12191733
    • 2008-08-14
    • Jin Ho HanSuk Ho LeeSeong Mo ParkNak Woong Eum
    • Jin Ho HanSuk Ho LeeSeong Mo ParkNak Woong Eum
    • H04B1/66
    • H04N19/523H04N19/43
    • Provided is a motion estimation apparatus for moving picture coding. The apparatus includes a 1-pel buffer for storing 1-pel unit pixels using luminance signals of a reference frame which correspond to macroblocks of a current frame, a 1-pel estimator for calculating 1-pel unit motion vectors and minimum costs in correspondence to the macroblocks of the current frame and the pixels stored in the 1-pel buffer, a ½-pel interpolator for performing ½-pel unit interpolation using the pixels stored in the 1-pel buffer, a ½-pel buffer for storing the ½-pel unit interpolated pixels, a ½-pel estimator for calculating ½-pel unit motion vectors and minimum costs in correspondence to the pixels stored in the ½-pel buffer, the values calculated by the 1-pel estimator, and the macroblocks of the current frame, a ¼-pel interpolator for performing ¼-pel unit interpolation using the pixels stored in the ½-pel and 1-pel buffers, a ¼-pel buffer for storing the ¼-pel unit interpolated pixels, and a ¼-pel estimator for calculating ¼-pel unit motion vectors and minimum costs in correspondence to the pixels stored in the ¼-pel buffer, the values calculated by the ½-pel estimator, and the macroblocks of the current frame.
    • 提供了一种用于运动图像编码的运动估计装置。 该装置包括:1个像素缓冲器,用于使用与当前帧的宏块相对应的参考帧的亮度信号来存储1个像素单位像素; 1像素估计器,用于计算1像素单位运动矢量,并对应于最小成本 当前帧的宏块和存储在1-像素缓冲器中的像素,1/2像素内插器,用于使用存储在1-像素缓冲器中的像素进行1/2像素单位内插;½像素缓冲器,用于存储1/2像素缓冲器, 像素单位内插像素,用于计算1/2像素单位运动矢量的1/2像素估计器和对应于存储在1/2像素缓冲器中的像素的最小成本,由1-像素估计器计算的值和当前的宏块 帧,¼贝尔内插器,用于使用存储在1/2贝尔和1贝尔缓冲器中的像素执行1/4贝尔单位内插,用于存储1/4倍率单位内插像素的1/4贝尔缓冲器,以及1/4贝尔估计器 用于计算¼像素单位运动矢量 对应于存储在1/4贝尔缓冲器中的像素的最小成本,由1/2贝尔估计器计算的值和当前帧的宏块。
    • 59. 发明授权
    • OCQPSK modulator and modulating method using 1-bit input FIR filter
    • OCQPSK调制器和使用1位输入FIR滤波器的调制方法
    • US06819708B1
    • 2004-11-16
    • US09716185
    • 2000-11-17
    • In Gi LimSuk Ho LeeKyung Soo KimHan Jin Cho
    • In Gi LimSuk Ho LeeKyung Soo KimHan Jin Cho
    • H04B169
    • H04L27/2071
    • A modulator for an IMT-2000 synchronous mobile station in a digital telecommunication and modulating method thereof, and more particularly, an OCQPSK modulator using FIR filters, each for performing 1:4 interpolation operations for 4 input data and a modulating method thereof. The orthogonal complex quadrature phase shift keying OCQPSK modulating apparatus uses a 1-bit input FIR filter that includes pseudo noise spreading for bifurcating 1-bit data inputted from input channels and pseudo-spreading the bifurcated 1-bit data, an FIR filter for receiving the 1-bit data and performing a filtering operation for pulse shaping, a gain multiplying block for multiplying filtered data outputted from the FIR filter by a gain for respective channels, and a channel adder block for adding data outputted from the gain multiplying block to output I channel and Q channel signals.
    • 一种用于数字电信中的IMT-2000同步移动台的调制器及其调制方法,更具体地,涉及使用FIR滤波器的OCQPSK调制器,每个用于对4个输入数据进行1:4插值运算及其调制方法。 正交复数正交相移键控OCQPSK调制装置使用包括伪噪声扩展的1比特输入FIR滤波器,用于对从输入通道输入的1比特数据进行分叉,并对分叉的1比特数据进行伪扩展; FIR滤波器,用于接收 1位数据并执行用于脉冲整形的滤波操作,用于将从FIR滤波器输出的滤波数据乘以各通道的增益的增益乘法块和用于将从增益乘法块输出的数据加到输出I的通道加法器块 通道和Q通道信号。