公开(公告)号：US07658851B2

公开(公告)日：2010-02-09

申请号：US10977989

申请日：2004-10-29

Applicant: Douglas J. Nelson ,  Robert Rawson

Inventor： Douglas J. Nelson ,  Robert Rawson

IPC: C02F3/00

CPC classification number: C02F3/348 ,  C02F3/34 ,  C12M29/06 ,  C12M33/14

Abstract: A device and method for growing aerobic and facultatively anaerobic bacteria such as Pseudomonas Fluorescens, Bacillus subtilis, Bacillus licheniformis, Starkeya novella and various autotrophic sulfur metabolizing bacteria, along with methods for releasing these bacteria into suspended growth or fixed film wastewater treatment zones such as soil or media, for the purposes of bioremediation and the removal of nitrogen, sulfur, and carbon wastes.

Abstract translation: 用于生长有氧和兼性厌氧细菌如荧光假单胞菌，枯草芽孢杆菌，地衣芽孢杆菌，Starkeya novella和各种自养硫代谢细菌的装置和方法，以及将这些细菌释放到悬浮生长或固定膜废水处理区如土壤中的方法 或介质，用于生物修复和除去氮，硫和碳废物。

公开(公告)号：US07457756B1

公开(公告)日：2008-11-25

申请号：US11149005

申请日：2005-06-09

Applicant: Douglas J. Nelson ,  David Charles Smith

Inventor： Douglas J. Nelson ,  David Charles Smith

IPC: G10L19/02 ,  G10L21/06

CPC classification number: G10L25/48 ,  G10L25/78

Abstract: A method of generating a time-frequency representation of a signal that preserves phase information by receiving the signal, calculating a joint time-frequency domain of the signal, estimating instantaneous frequencies of the joint time-frequency domain, modifying each estimated instantaneous frequency, if necessary, to correspond to a frequency of the joint time-frequency domain to which it most closely compares, redistributing the elements within the joint time-frequency domain according to the estimated instantaneous frequencies as modified, computing a magnitude for each element in the joint time-frequency domain as redistributed, and plotting the results as the time-frequency representation of the signal.

Abstract translation: 一种产生信号的时间频率表示的方法，该信号通过接收信号来保存相位信息，计算信号的联合时频域，估计联合时频域的瞬时频率，修改每个估计的瞬时频率，如果 必须对应于其最接近比较的联合时频域的频率，根据所修改的估计瞬时频率重新分配联合时频域内的元素，计算联合时间中每个元素的幅度 - 重新分配的频域，并将结果绘制为信号的时间 - 频率表示。

公开(公告)号：US07755536B1

公开(公告)日：2010-07-13

申请号：US11703042

申请日：2007-02-06

Applicant: Douglas J. Nelson ,  David C. Smith

Inventor： Douglas J. Nelson ,  David C. Smith

IPC: G01S13/42

CPC classification number: G01S13/582

Abstract: The present invention is a method of finding range and velocity of a target in a radar system using a time scale factor. Specifically, sending at least one signal from at least one transmitter to a target. A return signal is then received from the target at each transmitter and the elapsed time is recorded. The range to the target and velocity of the target are calculated based on a time scale factor of the recorded elapsed times. These values are appropriately output to the user.

Abstract translation: 本发明是使用时间比例因子在雷达系统中求出目标的范围和速度的方法。 具体地，将至少一个信号从至少一个发射机发送到目标。 然后在每个发射机处从目标接收返回信号，并记录经过的时间。 基于记录的经过时间的时间比例因子计算目标的目标和速度的范围。 这些值适当地输出给用户。

公开(公告)号：US07444128B1

公开(公告)日：2008-10-28

申请号：US11340820

申请日：2006-01-19

Applicant: Douglas J. Nelson

Inventor： Douglas J. Nelson

IPC: H04B17/00

CPC classification number: H04L27/0014 ,  H04L2027/0046 ,  H04L2027/0065

Abstract: A method of estimating the carrier frequency of a signal is disclosed. The method comprising the steps of initializing a time average vector to zero, selecting a user-selectable time segment to divide a received signal into. A signal is received, and divided into the user-selectable time segments. A spectral peak vector is calculated by performing a spectral estimation process on the user-selectable time segment divided signal. A first correlation vector is calculated on the spectral peak vector, and a second correlation vector is calculated from the spectral peak vector and the first correlation vector. The time average vector is appended with the result from the second correlation vector, and the process repeats for each time segment the received signal was broken into. The carrier is estimated using the most commonly occurring frequency in the time average vector.

Abstract translation: 公开了估计信号的载波频率的方法。 该方法包括以下步骤：将时间平均向量初始化为零，选择用户可选择的时间段以将接收的信号分成。 接收到一个信号，并分为用户可选择的时间段。 通过对用户可选择的时间段分割信号执行频谱估计处理来计算频谱峰值矢量。 在频谱峰值矢量上计算第一相关矢量，并且从频谱峰值矢量和第一相关矢量计算第二相关矢量。 时间平均向量附加有来自第二相关向量的结果，并且处理针对接收到的信号被分解的每个时间段重复。 使用时间平均向量中最常出现的频率来估计载波。

公开(公告)号：US06577968B2

公开(公告)日：2003-06-10

申请号：US09896161

申请日：2001-06-29

Applicant: Douglas J. Nelson

Inventor： Douglas J. Nelson

IPC: G01R2316

CPC classification number: G01R23/16

Abstract: The present invention is an method of estimating the frequency of a signal by first receiving a signal, forming a row vector, segmenting the row vector; converting the row vector to a first matrix, multiplying the first matrix by a weight, performing a Fourier transform on the result of the last step. These same steps are repeated on a delayed version of the signal. The next steps are calculating a complex conjugate for each result of the last step, forming a cross-spectrum matrix, selecting a magnitude in the cross-spectrum matrix that is above a threshold; and setting an angular frequency of the signal to either the phase of the selected magnitude, the phase of the mean of the complex numbers in the row in which appears the selected magnitude, or the selected magnitude. The frequency of the signal is then set to the estimated angular frequency divided by the product of 2&pgr; and the signal delay period. Additional rows are processed if need be.

公开(公告)号：US06556967B1

公开(公告)日：2003-04-29

申请号：US09266811

申请日：1999-03-12

Applicant: Douglas J. Nelson ,  David C. Smith ,  Jeffrey L. Townsend

Inventor： Douglas J. Nelson ,  David C. Smith ,  Jeffrey L. Townsend

IPC: G10L1520

CPC classification number: G10L25/78

Abstract: The present invention is a device for and method of detecting voice activity by receiving a signal; computing the absolute value of the signal; squaring the absolute value; low pass filtering the squared result; computing the mean of the filtered signal; subtracting the mean from the filtered result; padding the mean subtracted result with zeros to form a value that is a power of two if the result is not already a power of two; computing a DFFT of the power of two result; normalizing the DFFT result of the last step; computing a mean of the normalization; computing a variance of the normalization; computing a power ratio of the normalization; classifying the mean, variance and power ratio as speech or non-speech based on how this feature vector compares to similarly constructed feature vectors of known speech and non-speech. The voice activity detector includes an absolute value squarer; a low pass filter; a mean subtractor; a zero padder; a DFFT; a normalizer; and a classifier.

Abstract translation: 本发明是一种通过接收信号来检测语音活动的装置和方法， 计算信号的绝对值; 平方的绝对值; 低通滤波平方结果; 计算滤波信号的平均值; 从滤波结果中减去均值; 使用零填充平均减去的结果，以形成一个值，如果结果还不是2的幂，则为2的幂; 计算两个结果的幂的DFFT; 归一化最后一步的DFFT结果; 计算正常化的平均值; 计算归一化的方差; 计算正常化的功率比; 基于该特征向量与已知语音和非语音的类似构造的特征向量进行比较，将均值，方差和功率比分类为语音或非语音。 语音活动检测器包括绝对值平方; 低通滤波器; 平均减法器 零pad 一个DFFT; 归一化器 和分类器。

公开(公告)号：US06331249B1

公开(公告)日：2001-12-18

申请号：US09649472

申请日：2000-08-28

Applicant: Douglas J. Nelson ,  James E. Knight ,  Mark C. Noga

Inventor： Douglas J. Nelson ,  James E. Knight ,  Mark C. Noga

IPC: C02F142

CPC classification number: C02F3/306 ,  B01J39/02 ,  C02F1/42 ,  C02F3/302 ,  C02F2305/06 ,  Y10S210/903 ,  Y10S210/906

Abstract: An apparatus for treating a secondary treated wastewater effluent. The apparatus comprises an anoxic first zone for accepting the secondary effluent wherein the first zone includes heterotrophic bacteria, a carbon source, and an outlet structure including a limestone aggregate. The apparatus further comprises a second zone including an entrance structure that is in fluid communication with the outlet structure and an exit structure in fluid communication with the second zone. The exit structure includes a cationic exchange medium wherein the exit structure discharges the effluent to a disposal mechanism such as a subsurface disposal field.

Abstract translation: 一种二次处理废水流出物处理装置。 该装置包括用于接受二次流出物的缺氧第一区，其中第一区包括异养细菌，碳源和包括石灰石聚集体的出口结构。 该装置还包括第二区域，其包括与出口结构流体连通的入口结构和与第二区域流体连通的出口结构。 出口结构包括阳离子交换介质，其中出口结构将流出物排放到处置机构，例如地下处置场。

公开(公告)号：US5937422A

公开(公告)日：1999-08-10

申请号：US834263

申请日：1997-04-15

Applicant: Douglas J. Nelson ,  Patrick John Schone ,  Richard Michael Bates

Inventor： Douglas J. Nelson ,  Patrick John Schone ,  Richard Michael Bates

IPC: G06F17/30

CPC classification number: G06F17/30707 ,  Y10S707/99934

Abstract: A method of automatically generating a topical description of text by receiving the text containing input words; stemming each input word to its root form; assigning a user-definable part-of-speech score to each input word; assigning a language salience score to each input word; assigning an input-word score to each input word; creating a tree structure under each input word, where each tree structure contains the definition of the corresponding input word; assigning a definition-word score to each definition word; collapsing each tree structure to a corresponding tree-word list; assigning a tree-word-list score to each entry in each tree-word list; combining the tree-word lists into a final word list; assigning each word in the final word list a final-word-list score; and choosing the top N scoring words in the final word list as the topic description of the input text. Document searching and sorting may be accomplished by performing the method described above on each document in a database and then comparing the similarity of the resulting topical descriptions.

Abstract translation: 一种通过接收包含输入单词的文本来自动产生文本的主题描述的方法; 将每个输入单词导向其根形式; 将用户可定义的词性分数分配给每个输入单词; 为每个输入字分配语言显着性分数; 将输入字分数分配给每个输入字; 在每个输入字下创建树结构，其中每个树结构包含相应输入字的定义; 为每个定义词分配定义词得分; 将每个树结构折叠到相应的树字列表; 为每个树字列表中的每个条目分配树字列表分数; 将树字列表组合成最终单词列表; 将最终单词列表中的每个单词分配给最终单词列表分数; 并在最终单词列表中选择前N个得分词作为输入文本的主题描述。 可以通过对数据库中的每个文档执行上述方法，然后比较所得到的主题描述的相似性来实现文档搜索和排序。

公开(公告)号：US07676046B1

公开(公告)日：2010-03-09

申请号：US11149004

申请日：2005-06-09

Applicant: Douglas J. Nelson ,  David C. Smith

Inventor： Douglas J. Nelson ,  David C. Smith

IPC: H04B17/00

CPC classification number: H04B1/1027

Abstract: A method of removing noise and interference from a signal by receiving the signal, calculating a joint time-frequency domain of the signal, estimating instantaneous frequencies of the joint time-frequency domain, modifying each estimated instantaneous frequency, if necessary, to correspond to a frequency of the joint time-frequency domain to which it most closely compares, redistributing the elements within the joint time-frequency domain according to the estimated instantaneous frequencies as modified, computing a magnitude for each element in the joint time-frequency domain as redistributed, plotting the results as the time-frequency representation of the signal, identifying in the plot any noise and interference components in the received signal, eliminating from the redistributed joint time-frequency domain elements that correspond to noise and interference, and recovering a signal devoid of noise and interference from the modified redistributed joint time-frequency domain.

Abstract translation: 一种通过接收信号来消除信号的噪声和干扰的方法，计算信号的联合时频域，估计联合时频域的瞬时频率，如有必要，修改每个估计的瞬时频率，以对应于 其最接近比较的联合时频域的频率，根据所修改的估计瞬时频率重新分布联合时频域内的元素，计算重新分配的联合时频域中的每个元素的幅度， 将结果绘制为信号的时间频率表示，在绘图中识别接收到的信号中的任何噪声和干扰分量，消除对应于噪声和干扰的重新分布的联合时频域元素，以及恢复没有 来自改进的再分布联合时频域的噪声和干扰。

公开(公告)号：US20090321350A1

公开(公告)日：2009-12-31

申请号：US10977989

申请日：2004-10-29

Applicant: Douglas J. Nelson ,  Robert Rawson

Inventor： Douglas J. Nelson ,  Robert Rawson

IPC: C02F3/00 ,  C12N1/20 ,  C12N15/87 ,  C12N1/14

CPC classification number: C02F3/348 ,  C02F3/34 ,  C12M29/06 ,  C12M33/14

Abstract: A device and method for growing aerobic and facultatively anaerobic bacteria such as Pseudomonas Fluorescens, Bacillus subtilus, Bacillus lichenoformis, Starkeya novella and various autotrophic sulfur metabolizing bacteria, along with methods for releasing these bacteria into suspended growth or fixed film wastewater treatment zones such as soil or media, for the purposes of bioremediation and the removal of nitrogen, sulfur, and carbon wastes.

Abstract translation: 用于生长有氧和兼性厌氧细菌如荧光假单胞菌，枯草芽孢杆菌，地衣芽孢杆菌，Starkeya novella和各种自养硫代谢细菌的装置和方法，以及将这些细菌释放到悬浮生长或固定膜废水处理区如土壤中的方法 或介质，用于生物修复和除去氮，硫和碳废物。