公开(公告)号：US5655253A

公开(公告)日：1997-08-12

申请号：US645433

申请日：1996-05-13

申请人： Robert L. Nevin ,  Denis M. Sexton

发明人： Robert L. Nevin ,  Denis M. Sexton

IPC分类号： A47L7/00 ,  A61C19/00 ,  B08B15/02 ,  B24B55/06 ,  B28B17/04 ,  A47L5/38

CPC分类号： A47L7/0047 ,  A47L7/00 ,  A47L7/0052 ,  A61C19/007 ,  B08B15/026 ,  B24B55/06 ,  B28B17/04

摘要： A self-contained portable device for collecting dust and other particulate matter or the like. There is a housing with partially open sides sufficiently large to allow the entrance of an operator's hands. A sensor is activated when the operator's hands are placed within the device. The sensor activates the vacuum motor and light source so that the work area is illuminated and particulate matter and dust can be drawn away from the work area. A removable and disposable filter bag collects the dust particles and can be disposed of when full. The operator does not come in contact with any contaminated dust or particulate matter in disposing of the filter bag.

摘要翻译： 用于收集灰尘和其它颗粒物质等的独立便携式装置。 有一个外壳，其部分开放的侧面足够大以允许操作者的手入口。 当操作者的手放置在设备内时，传感器被激活。 传感器激活真空电机和光源，使工作区域照亮，颗粒物和灰尘可以从工作区域拉出。 可移动和一次性过滤袋收集灰尘颗粒，并可在充满时进行处理。 在处理过滤袋时，操作者不会接触任何污染的灰尘或颗粒物。

公开(公告)号：US4228435A

公开(公告)日：1980-10-14

申请号：US5885

申请日：1979-01-23

申请人： Robert L. Nevin

发明人： Robert L. Nevin

IPC分类号： G01S7/34 ,  G01S13/89 ,  G01S13/00

CPC分类号： G01S7/34 ,  G01S13/89

摘要： A sensitivity time control circuit for radar receivers, using range gated feedback where the video signal is sampled and compared to a desired signal at intervals based upon range sweep; as the radar antenna is reversing direction, integrated averages of the video signal are used to update the sensitivity time controlled waveform.

摘要翻译： 雷达接收机的灵敏度时间控制电路，使用范围门控反馈，其中视频信号被采样并且基于范围扫描以间隔与期望的信号进行比较; 随着雷达天线的反转方向，视频信号的综合平均值用于更新灵敏度时间控制波形。

公开(公告)号：US5766017A

公开(公告)日：1998-06-16

申请号：US730128

申请日：1996-10-15

申请人： Robert L. Nevin ,  Denis M. Sexton

发明人： Robert L. Nevin ,  Denis M. Sexton

IPC分类号： G09B23/28 ,  G09B23/30

CPC分类号： G09B23/283

摘要： A dental teaching and practicing simulator comprising a stationery work bench having a work surface and a completely enclosed storage compartment. The storage compartment has a door with locking means thereon to restrict access to the storage compartment. The dental simulation and teaching equipment is mounted on a slide mechanism which can be stored within the compartment and slid out therefrom for utilization. The dental simulation and teaching equipment comprises a mannequin head, a torso, handpieces, and vacuum tools which are normally used in dentistry. The dental simulation and teaching equipment can be stored and locked in the storage compartment such that access thereto is limited. Thus, a safe and secure environment is provided for the equipment until its authorized use.

摘要翻译： 一种牙科教学和练习模拟器，其包括具有工作表面和完全封闭的存储隔间的文具工作台。 储藏室具有门，其上具有锁定装置，以限制对储藏室的通路。 牙科模拟和教学设备安装在滑动机构上，该滑动机构可以存储在隔室内并从中滑出以供使用。 牙科模拟和教学设备包括通常用于牙科的人体模型头，躯干，手机和真空工具。 牙科模拟和教学设备可以存储和锁定在储藏室中，使得对其进行限制。 因此，在其授权使用之前，为设备提供安全和安全的环境。

公开(公告)号：US5572219A

公开(公告)日：1996-11-05

申请号：US499528

申请日：1995-07-07

申请人： Seth D. Silverstein ,  Robert L. Nevin ,  William E. Engeler

发明人： Seth D. Silverstein ,  Robert L. Nevin ,  William E. Engeler

IPC分类号： H01Q3/00 ,  H01Q3/22

CPC分类号： H01Q3/22 ,  H01Q3/005

摘要： A method and apparatus for remotely calibrating a system having a plurality of N elements, such as a phased array system, is provided. The method includes generating coherent signals, such as a calibration signal and a reference signal having a predetermined spectral relationship between one another. The calibration signal which is applied to each respective one of the plurality of N elements can be orthogonally encoded based on the entries of a predetermined invertible encoding matrix, such as a binary Hadamard matrix, to generate first and second sets of orthogonally encoded signals. The first and second sets of orthogonally encoded signals and the reference signal are transmitted to a remote location. The transmitted first and second sets of orthogonally encoded signals are coherently detected at the remote location. The coherently detected first and second sets of orthogonally encoded signals are then decoded using the inverse of the predetermined invertible encoding matrix to generate a set of decoded signals. The set of decoded signals is then processed for generating calibration data for each element of the system.

摘要翻译： 提供了用于远程校准具有多个N个元件（诸如相控阵列系统）的系统的方法和装置。 该方法包括产生相干信号，例如校准信号和具有彼此之间的预定光谱关系的参考信号。 可以基于诸如二进制Hadamard矩阵的预定可逆编码矩阵的条目来对应用于多个N个元素中的每个相应一个元素的校准信号进行正交编码，以生成第一和第二组正交编码信号。 第一组和第二组正交编码信号和参考信号被发送到远程位置。 所发送的第一组和第二组正交编码信号在远程位置被相干地检测。 然后使用预定可逆编码矩阵的倒数对相干检测的第一和第二组正交编码信号进行解码，以生成一组解码信号。 然后对该组解码信号进行处理，以产生系统的每个元件的校准数据。

公开(公告)号：US5357257A

公开(公告)日：1994-10-18

申请号：US43080

申请日：1993-04-05

申请人： Robert L. Nevin

发明人： Robert L. Nevin

IPC分类号： G01S7/40 ,  H04B7/005 ,  H04B7/08

CPC分类号： H04B7/0845 ,  G01S7/4021 ,  H04B7/005

摘要： A multi-channel electronic communication system with equalized channels comprises a reference channel and a plurality of object channels. A white noise excitation signal is injected into each channel. Each of the channels is sampled and, for each channel, the resultant samples are windowed and the windowed samples are Fast Fourier Transformed from the time domain to the frequency domain. Power spectral density estimates are determined for each object channel from the windowed samples in that channel. Cross-spectral density estimates for each object channel with respect to the reference channel are determined from the windowed samples in that object channel and the windowed samples in the reference channel. The power spectral density estimates are divided by the cross-spectral density estimates to derive correlation ratios which are converted back to the time domain to specify a corrective equalization filter weight vector for each object channel. An equalization filter in each object channel is then programmed with a respective filter weight vector specified by the corresponding correlation ratio and an equalization filter in the reference channel is programmed with a unity weight vector to equalize the channels in the system.

摘要翻译： 具有均衡信道的多信道电子通信系统包括参考信道和多个对象信道。 白噪声激励信号被注入每个通道。 每个通道被采样，并且对于每个通道，将所得到的样本加窗，并且窗口样本从时域到频域进行快速傅立叶变换。 从该通道中的窗口样本确定每个物体通道的功率谱密度估计。 相对于参考通道的每个物体通道的交叉谱密度估计是从对象通道中的窗口样本和参考通道中的加窗样本确定的。 功率谱密度估计被交叉谱密度估计除以导出相关比，其被转换回时域以指定每个对象信道的校正均衡滤波器权重向量。 然后每个对象通道中的均衡滤波器用相应的相关比指定的相应的滤波器权重向量编程，并且参考信道中的均衡滤波器用单位权重向量编程以均衡系统中的信道。

公开(公告)号：US5262785A

公开(公告)日：1993-11-16

申请号：US876958

申请日：1992-04-30

申请人： Seth D. Silverstein ,  Robert L. Nevin

发明人： Seth D. Silverstein ,  Robert L. Nevin

IPC分类号： G01S13/522 ,  G01S13/52

CPC分类号： G01S13/522

摘要： A small target phased array Doppler detection system receives signals from remote moving targets and determines Doppler frequency shift and the respective powers of coherent electromagnetic signals for the purpose of detection and identification of relatively small, slow moving targets in the presence of scattering echoes due to clutter. The system employs covariance analysis of the received signals followed by eigenanalysis to produce eigenvectors and eigenvalues. A superresolution algorithm creates dwell manifold vectors which indicate velocities of targets from the eigenvectors. The relative power of radar echoes contribute information relevant to the identification of real moving targets as opposed to false alarms.

摘要翻译： 小目标相控阵多普勒检测系统从远程移动目标接收信号，并确定多普勒频移和相干电磁信号的相应功率，以便在存在由于杂波引起的散射回波的情况下检测和识别相对较小，较慢的移动目标 。 该系统对接收到的信号进行协方差分析，然后进行特征分析以产生特征向量和特征值。 超分辨率算法创建表示来自特征向量的目标速度的驻留歧管向量。 雷达回波的相对功率提供与识别真实移动目标相关的信息，而不是虚假警报。