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    • 1. 发明授权
    • Architecture of discrete wavelet transformation
    • 离散小波变换的架构
    • US06424986B1
    • 2002-07-23
    • US09321664
    • 1999-05-28
    • Yongming LiHongyi ChenXiaodong Wu
    • Yongming LiHongyi ChenXiaodong Wu
    • G06F1714
    • G06F17/148
    • A VLSI wavelet transform (WT) architecture suitable for use in a discrete wavelet transform (DWT) or a discrete wavelet packet transform (DWPT). The WT architecture has a multiplier; an accumulator; at least two address generators that has a first address generator and a second address generator; a control unit; a memory of result that stores computation results; and a memory of table, which pre-stores all possible weights, each of which weights is a product of some specified filter coefficients for performing a DWT/DWPT with parameters of decomposition level, length of data segment, and filter length. The first address generator and the control unit receive data input, the control unit exports control signals to multiplier, accumulator, second address generator, and memory of table. The memory of the table also receives outputs from the first address generator and the second address generator to select the desired weights of the filter coefficients, which are sent to the multiplier to obtain a product with the data input. The product is sent to the accumulator to add into a corresponding sum, and the memory of result receives the corresponding sum and an address output of the second address generator to address the received corresponding sum, in which when all of the data input in the DWT/DWPT are completely inputted, each the corresponding sum is an end result of the DWT/DWPT.
    • 适用于离散小波变换(DWT)或离散小波包变换(DWPT)的VLSI小波变换(WT)架构。 WT架构有一个乘数; 蓄能器 至少两个具有第一地址发生器和第二地址发生器的地址发生器; 一个控制单元; 存储计算结果的结果记忆; 和表的存储器,其预存储所有可能的权重,其中每个权重是用于执行具有分解级别的参数,数据段的长度和过滤器长度的DWT / DWPT的一些指定的滤波器系数的乘积。 第一地址发生器和控制单元接收数据输入,控制单元将控制信号输出到乘法器,累加器,第二地址发生器和表的存储器。 表的存储器还接收来自第一地址发生器和第二地址发生器的输出,以选择滤波器系数的期望权重,这些权重被发送到乘法器以获得具有数据输入的乘积。 产品被发送到累加器以加入相应的和,并且结果的存储器接收第二地址发生器的相应的和和地址输出以寻址接收到的对应的和,其中当DWT中输入的所有数据 / DWPT完全输入,每个相应的和是DWT / DWPT的最终结果。
    • 2. 发明授权
    • Method of signal compression
    • 信号压缩方法
    • US6094631A
    • 2000-07-25
    • US112949
    • 1998-07-09
    • Yongming LiXiaodong WuHongyi Chen
    • Yongming LiXiaodong WuHongyi Chen
    • G10L19/02H04N7/26G10L21/04
    • G10L19/0212H04N19/61H04N19/63G10L25/27H04N19/115H04N19/146
    • A method of signal compression. An input signal is divided into a plurality of segments. Each of the segments is decomposed by wavelet packet transform to a plurality of levels, so that each of the segments is in a form of a group of coefficients in each of a plurality of domains corresponding to each of the levels. Each of the domains is divided into a plurality of sub-domains to calculate a degree of characteristic concentration corresponding thereto. One of the domains having a highest degree of characteristic concentration is select to perform bit allocation and quantization, so that the group of coefficients in the selected domain is represented as an information. The information is formatted into a frame for transmission, and then the frame is output.
    • 一种信号压缩方法。 输入信号被分成多个段。 每个段通过小波包变换分解为多个级别,使得每个段在与每个级别对应的多个域中的每一个域中是一组系数的形式。 每个域被分成多个子域以计算与其对应的特征浓度的程度。 选择具有最高特征浓度度的区域之一来执行比特分配和量化,使得所选择的域中的系数组被表示为信息。 将信息格式化为一帧以进行传输,然后输出该帧。
    • 6. 发明申请
    • METHOD AND DEVICE FOR DETECTION OF HEAVY METAL IONS IN WATER
    • 用于检测水中重金属离子的方法和装置
    • US20120184040A1
    • 2012-07-19
    • US13348206
    • 2012-01-11
    • Xiaoke ZhangHisashi KajiuraYongming Li
    • Xiaoke ZhangHisashi KajiuraYongming Li
    • G01N33/20
    • G01N33/1813
    • This disclosure discloses a method and a device for the detection of heavy metal ions in water. The method includes: providing a detection material, wherein the detection material includes a hydrophilic layer which is at least partially covered by a hydrophobic layer formed from a long-chain compound selected from the group consisting of a long-chain thiol, a long-chain fatty acid and combinations thereof, and wherein a detection area is an area covered by the hydrophobic layer, and the detection area has a surface having an initial contact angle with water of more than or equal to about 120°; contacting the detection area with an aqueous solution sample; determining whether the surface of the detection area has a hydrophobicity-hydrophilicity change after contact with the aqueous solution sample; and deciding whether heavy metal ions exist in the aqueous solution sample according to the determination.
    • 本公开公开了一种用于检测水中重金属离子的方法和装置。 该方法包括:提供检测材料,其中所述检测材料包括至少部分被由长链化合物形成的疏水层覆盖的亲水层,所述长链化合物选自长链硫醇,长链 脂肪酸及其组合,并且其中检测区域是由疏水层覆盖的区域,并且检测区域具有与水的初始接触角大于或等于约120°的表面; 使检测区域与水溶液样品接触; 确定检测区域的表面在与水溶液样品接触之后是否具有疏水性 - 亲水性变化; 并根据测定判定水溶液样品中是否存在重金属离子。