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1. 发明授权

US06556967B1 Voice activity detector 有权
标题翻译：语音活动检测器
公开(公告)号：US06556967B1
公开(公告)日：2003-04-29
申请号：US09266811
申请日：1999-03-12
申请人： Douglas J. Nelson , David C. Smith , Jeffrey L. Townsend
发明人： Douglas J. Nelson , David C. Smith , Jeffrey L. Townsend
IPC分类号： G10L1520
CPC分类号： G10L25/78
摘要： 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.
摘要翻译：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。

2. 发明授权

US07755536B1 Method of signal processing for determining range and velocity of an object 有权
标题翻译：用于确定物体的范围和速度的信号处理方法
公开(公告)号：US07755536B1
公开(公告)日：2010-07-13
申请号：US11703042
申请日：2007-02-06
申请人： Douglas J. Nelson , David C. Smith
发明人： Douglas J. Nelson , David C. Smith
IPC分类号： G01S13/42
CPC分类号： G01S13/582
摘要： 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.
摘要翻译：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。

3. 发明授权

US07545325B1 Method of signal processing 有权
标题翻译：信号处理方法
公开(公告)号：US07545325B1
公开(公告)日：2009-06-09
申请号：US11703040
申请日：2007-02-06
申请人： Douglas J. Nelson , David C. Smith
发明人： Douglas J. Nelson , David C. Smith
IPC分类号： G01S1/24
CPC分类号： G01S5/12
摘要： The present invention is a method of finding propagation time and velocity of a transmitter. Specifically, receiving a signal at two or more receivers and using the scalar time relationship to determine propagation time and velocity of the transmitter for the purpose of location of the transmitter. This method is useful for both narrowband and broadband applications with increased accuracy over previous methods.
摘要翻译：本发明是一种寻找发射机的传播时间和速度的方法。具体地，在两个或多个接收机处接收信号并使用标量时间关系来确定发射机的传播时间和速度，以便发射机的位置。对于窄带和宽带应用，这种方法对于以前的方法具有更高的准确性是有用的。

4. 发明授权

US07676046B1 Method of removing noise and interference from signal 有权
标题翻译：从信号中消除噪声和干扰的方法
公开(公告)号：US07676046B1
公开(公告)日：2010-03-09
申请号：US11149004
申请日：2005-06-09
申请人： Douglas J. Nelson , David C. Smith
发明人： Douglas J. Nelson , David C. Smith
IPC分类号： H04B17/00
CPC分类号： H04B1/1027
摘要： 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.
摘要翻译：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。

5. 发明授权

US10344916B2 Magnetic mount 有权
公开(公告)号：US10344916B2
公开(公告)日：2019-07-09
申请号：US15914390
申请日：2018-03-07
申请人： David C. Smith
发明人： David C. Smith
IPC分类号： F16M13/00 , F16M13/02 , A47G29/10 , B25H3/00 , F16B1/00
摘要： A device for holding objects such as key rings, security cameras, and the like to the corner of a pair of walls. The device is a mount having a pair of bodies each having magnets and attachment features. The device also includes connectors which can be used to connect mounts together and object supports which can be attached in multiple ways.

6. 发明申请

US20180195666A1 Magnetic Mount 审中-公开
公开(公告)号：US20180195666A1
公开(公告)日：2018-07-12
申请号：US15914390
申请日：2018-03-07
申请人： David C. Smith
发明人： David C. Smith
IPC分类号： F16M13/02 , A47G29/10 , B25H3/00 , F16B1/00
CPC分类号： F16M13/022 , A47G29/10 , B25H3/00 , F16B2001/0035 , F16M13/025
摘要： A device for holding objects such as key rings, security cameras, and the like to the corner of a pair of walls. The device is a mount having a pair of bodies each having magnets and attachment features. The device also includes connectors which can be used to connect mounts together and object supports which can be attached in multiple ways.

7. 发明申请

US20120064210A1 Enhanced Preservation of Processed Food 有权
标题翻译：加强食品保鲜
公开(公告)号：US20120064210A1
公开(公告)日：2012-03-15
申请号：US12282431
申请日：2007-03-23
申请人： Michael E. Stiles , Denise Carlson , David C. Smith , Lynn McMullen
发明人： Michael E. Stiles , Denise Carlson , David C. Smith , Lynn McMullen
IPC分类号： A23L3/3571 , A01N63/02 , A01P1/00 , A01N63/00
CPC分类号： A01N63/00 , A01N63/02 , A23B4/20 , A23B4/22 , A23L3/3463 , A23L3/34635 , A23L3/3508 , A23L3/3571 , C12N1/20 , C12R1/01 , A01N37/36 , A01N37/42 , A01N2300/00
摘要： The present invention included compositions and methods for treating Listeria in foods. The compositions and methods include at least one first preservative, and a second preservative selected from the group consisting of a Carnobacterium species, Carnobacterium maltaromaticum, a fermentate, containing at least one bacteriocin, and combinations thereof.
摘要翻译：本发明包括用于在食物中处理利斯特氏菌的组合物和方法。所述组合物和方法包括至少一种第一防腐剂和选自下列物质的第二防腐剂：卡那杆菌属物种，麦芽麦芽窄杆菌，含有至少一种细菌素的发酵物及其组合。

8. 发明申请

US20090057650A1 Nanoscale wires and related devices 审中-公开
标题翻译：纳米线及相关设备
公开(公告)号：US20090057650A1
公开(公告)日：2009-03-05
申请号：US12072844
申请日：2008-02-27
申请人： Charles M. Lieber , Xiangfeng Duan , Yi Cui , Yu Huang , Mark Gudiksen , Lincoln J. Lauhon , Jianfang Wang , Hongkun Park , Qingqiao Wei , Wenjie Liang , David C. Smith , Deli Wang , Zhaohui Zhong
发明人： Charles M. Lieber , Xiangfeng Duan , Yi Cui , Yu Huang , Mark Gudiksen , Lincoln J. Lauhon , Jianfang Wang , Hongkun Park , Qingqiao Wei , Wenjie Liang , David C. Smith , Deli Wang , Zhaohui Zhong
IPC分类号： H01L29/66
CPC分类号： C30B29/60 , B82Y10/00 , B82Y15/00 , B82Y30/00 , G01N27/4146 , H01L29/0665 , H01L29/0673 , H01L29/068 , H01L29/1606 , H01L29/2003 , H01L29/267 , H01L29/73 , H01L31/0352 , H01L31/08 , H01L33/18 , H01L33/20 , H01L51/0048
摘要： The present invention relates generally to sub-microelectronic circuitry, and more particularly to nanometer-scale articles, including nanoscale wires which can be selectively doped at various locations and at various levels. In some cases, the articles may be single crystals. The nanoscale wires can be doped, for example, differentially along their length, or radially, and either in terms of identity of dopant, concentration of dopant, or both. This may be used to provide both n-type and p-type conductivity in a single item, or in different items in close proximity to each other, such as in a crossbar array. The fabrication and growth of such articles is described, and the arrangement of such articles to fabricate electronic, optoelectronic, or spintronic devices and components. For example, semiconductor materials can be doped to form n-type and p-type semiconductor regions for making a variety of devices such as field effect transistors, bipolar transistors, complementary inverters, tunnel diodes, light emitting diodes, sensors, and the like.
摘要翻译：本发明一般涉及亚微电子电路，更具体地涉及纳米尺度制品，包括可以在各种位置和各种级别选择性地掺杂的纳米线。在一些情况下，制品可以是单晶。纳米尺寸线可以例如沿其长度或径向掺杂，或者根据掺杂剂的掺杂剂浓度，掺杂剂的浓度或两者掺杂。这可以用于在单个项目中提供n型和p型导电性，或者在彼此非常接近的不同项目中提供，例如在横杆阵列中。描述了这种制品的制造和生长，以及这些制品的布置以制造电子，光电子或自旋电子器件和部件。例如，可以掺杂半导体材料以形成n型和p型半导体区域，用于制造诸如场效应晶体管，双极晶体管，互补反相器，隧道二极管，发光二极管，传感器等的各种器件。

9. 发明授权

US07264226B2 Remotely-adjustable support apparatus and methods 失效
标题翻译：远程可调支持装置和方法
公开(公告)号：US07264226B2
公开(公告)日：2007-09-04
申请号：US10750407
申请日：2003-12-30
申请人： David C. Smith , Ronald D. Curl
发明人： David C. Smith , Ronald D. Curl
IPC分类号： A62B3/00
CPC分类号： F16M11/42 , F16M11/046 , F16M11/18
摘要： Remotely-adjustable support apparatus and methods are disclosed. In one embodiment, an apparatus includes a primary support and a secondary support moveably coupled to the primary support. The secondary support includes a cradle member adapted to engage the workpiece. The apparatus further includes a drive assembly operatively coupled to the secondary support and adapted to move the secondary support relative to the primary support. A control device is remotely positionable with respect to the drive assembly and operatively coupled to the drive assembly. The control device is adapted to transmit at least one control signal to the drive assembly to move the secondary support relative to the primary support.
摘要翻译：公开了可远程调节的支撑装置和方法。在一个实施例中，装置包括主支撑件和可移动地联接到主支撑件的辅助支撑件。辅助支撑件包括适于接合工件的托架构件。该装置还包括可操作地联接到次级支撑件并且适于相对于主支撑件移动辅助支撑件的驱动组件。控制装置相对于驱动组件可远程定位并且可操作地联接到驱动组件。控制装置适于将至少一个控制信号发送到驱动组件以相对于主支撑件移动辅助支撑件。

10. 发明授权

US06591614B2 Kinetic cooling and heating 失效
公开(公告)号：US06591614B2
公开(公告)日：2003-07-15
申请号：US09847489
申请日：2001-05-02
申请人： David C. Smith , Melvin P. Williams
发明人： David C. Smith , Melvin P. Williams
IPC分类号： F25B2100
CPC分类号： F02C1/105 , F25B23/00
摘要： In heating and cooling apparatus, molecules of working gas are excited by light irradiation and thereby cooled as the gas flows through a mirrored cooling cell. In a closed loop embodiment, the gas then flows by means of a fan or compressor to a first heat exchanger where heat from the matter being cooled is transferred to the gas; and, then to a second heat exchanger where heat is transferred from the gas to a heat sink. The apparatus may be used either like a heat pump or air conditioner. In an open-end cooling apparatus embodiment, the gas flows from the cooling cell, through the first heat exchanger, and to atmosphere. The light source may be a 10.6 micron laser; or a 9-11 micron electric arc, a hot filament or the Sun. Working gases comprise N2 and C02; exhaust gases of engines or fuel cells; and gases which comprise different molecular composition gases or different isotopic species of the same molecular composition gas.

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