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1. 发明授权

US5118194A Optical inspection of lacquer and carbon deposits 失效
标题翻译：漆和碳沉积物的光学检查
公开(公告)号：US5118194A
公开(公告)日：1992-06-02
申请号：US700346
申请日：1991-05-07
申请人： Bruce C. Mather , David S. McFalls, II , Douglas L. Michalsky
发明人： Bruce C. Mather , David S. McFalls, II , Douglas L. Michalsky
IPC分类号： G01B11/30 , G01N21/84
CPC分类号： G01N21/952 , G01B11/303 , G01N21/94
摘要： An improved method and apparatus for classifying and quantifying lacquer and carbon deposits on internal combustion engine pistons. In the preferred embodiment of the invention, a piston is mounted on a rotating means and is rotated to expose the entire surface of the piston to a video imaging system. The piston is illuminated with indirect lighting in order to minimize reflections and to enhance the contrast of the video image. The video imaging system is comprised of a video camera which employs a charged coupled device (CCD) sensor and data storage for storing digital video produced by the camera. A microprocessor is operable to control operation of the camera and to process the stored data according to an algorithm to classify the video image into one of six categories.
摘要翻译：一种用于对内燃机活塞上的漆和碳沉积进行分类和定量的改进方法和装置。在本发明的优选实施例中，活塞安装在旋转装置上并被旋转以将活塞的整个表面暴露于视频成像系统。活塞被间接照明照亮，以最小化反射并增强视频图像的对比度。视频成像系统由使用电荷耦合器件（CCD）传感器的摄像机和用于存储由相机产生的数字视频的数据存储器组成。微处理器可操作以控制相机的操作并且根据用于将视频图像分类为六个类别之一的算法来处理所存储的数据。

2. 发明授权

US4790326A Method and apparatus for determining pulse rate 失效
标题翻译：用于确定脉率的方法和装置
公开(公告)号：US4790326A
公开(公告)日：1988-12-13
申请号：US33407
申请日：1987-04-01
申请人： Bruce C. Mather , William C. Fox , Harry H. Peel , Dennis J. Wenzel
发明人： Bruce C. Mather , William C. Fox , Harry H. Peel , Dennis J. Wenzel
IPC分类号： A61B5/0245 , A61B5/024 , A61B5/02
CPC分类号： A61B5/6831 , A61B5/024 , A61B5/02438
摘要： A method for determining the pulse rate of a person. The method of the present invention is implemented in two phases. The first phase involes the determination of pulse intervals and the second phase provides an indication of the pulse rate based on the data produced during the first phase. The first phase is implemented by an algorithm which produces a pulse distribution profile from an array of pulses obtained from an appropriate transducer. In the second phase of the measurement, the distribution is searched to locate the region of maximum density. The pulse rate within the maximally dense region are then averaged to determine pulse rate. The pulse rate detection method of the present invention eliminates a significant number of erroneous pulse signals before calculation of pulse rate, thus providing a more accurate indication of the true pulse rate. The processing algorithm used in the preferred embodiment is based on an integer distribution the measurement can be obtained with a minimum amount of system memory and processor time.
摘要翻译：一种用于确定人的脉率的方法。本发明的方法分两个阶段实现。第一阶段涉及脉冲间隔的确定，并且第二阶段基于在第一阶段期间产生的数据提供脉率的指示。第一阶段通过一种从适当的换能器获得的脉冲阵列产生脉冲分布分布的算法实现。在测量的第二阶段，搜索分布以定位最大密度的区域。然后将最大致密区域内的脉率平均以确定脉搏率。本发明的脉搏检测方法在脉搏率计算之前消除了大量的错误脉冲信号，从而提供了真实脉搏率的更准确的指示。在优选实施例中使用的处理算法基于整数分布，可以以最小量的系统存储器和处理器时间来获得测量。

3. 发明授权

US5143078A Respiration rate monitor 失效
标题翻译：呼吸频率监测
公开(公告)号：US5143078A
公开(公告)日：1992-09-01
申请号：US414658
申请日：1989-09-29
申请人： Bruce C. Mather , Dean C. Winter
发明人： Bruce C. Mather , Dean C. Winter
IPC分类号： A61B5/08 , A61B7/00
CPC分类号： A61B5/0816 , A61B7/003
摘要： A monitoring system for providing an accurate indication of a patient's respiration rate. The system is effective in eliminating or significantly reducing the effects of heart sounds and ambient noise. The system comprises means for obtaining a first signal waveform containing components corresponding to the patient's breath sounds, as well as components corresponding to heart sounds and ambient noise. The signal is passed through a digital bandpass filter having a passband selected to remove heart sounds and ambient noise to produce a second waveform. From the second waveform the total energy is computed of a portion of the signal within a moving window of predetermined length. The resulting energy envelope signal is smoothed and then high-pass filtered by removing the average DC value of the signal over a predetermined preceding time interval. Respiration is detected by identifying significant, positive-going zero crossings of the resulting signal through a band about zero. The zero-band threshold used to obtain this waveform can be controlled by the operator or pre-set for a particular sensitivity.
摘要翻译：用于提供患者呼吸速率的准确指示的监测系统。该系统有效消除或显着降低心脏声音和环境噪声的影响。该系统包括用于获得包含对应于患者呼吸音的成分的第一信号波形以及对应于心脏声音和环境噪声的组件的装置。信号通过具有选择的通带的数字带通滤波器，以去除心脏声音和环境噪声以产生第二波形。根据第二波形，计算出在预定长度的移动窗口内的信号的一部分的总能量。所得到的能量包络信号被平滑化，然后通过在预定的先前时间间隔上去除信号的平均DC值来进行高通滤波。通过将结果信号通过一个带大约零的重要的正向过零点来检测呼吸。用于获得该波形的零带阈值可以由操作者控制或者为特定灵敏度预设。

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