公开(公告)号：US06509559B1

公开(公告)日：2003-01-21

申请号：US09598069

申请日：2000-06-20

申请人： Franz W. Ulrich ,  John Ma ,  Darcy J. Hart

发明人： Franz W. Ulrich ,  John Ma ,  Darcy J. Hart

IPC分类号： H01J516

CPC分类号： G01B11/25

摘要： In the context of a machine-vision system for inspecting a part, a method and apparatus to provide high-speed high accuracy 3D (three-dimensional) inspection of manufactured parts by reducing vibration. The invention provides a method, a grating, and a 3D imaging system using a binary grating in the projection system to generate patterned light. The grating includes a binary grating having a cycle pattern, wherein each cycle includes a first substantially clear stripe of a first width and a first substantially opaque stripe of substantially the same first width, and between the first substantially clear stripe and the first substantially opaque stripe are a second substantially opaque stripe of a second width narrower than the first width, and a second substantially clear stripe of substantially the second width. In some embodiments, a plurality of alternating relatively narrow clear and opaque stripes are positioned between the relatively wider first substantially clear stripe and first substantially opaque stripe, in order that the optics of the projection optical system and the relative motion between the projection light pattern and the imaging time (trapezoidal integration) smooth the resulting pattern to provide a linear sine-wave-like pattern of projection light.

摘要翻译： 在用于检查零件的机器视觉系统的背景下，通过减少振动来提供制造零件的高速高精度3D（三维）检查的方法和装置。 本发明提供一种在投影系统中使用二进制光栅以产生图案光的方法，光栅和3D成像系统。 光栅包括具有循环图案的二​​进制光栅，其中每个周期包括具有基本上相同的第一宽度的第一宽度的第一基本上清晰的条纹和基本相同的第一宽度的第一基本上不透明的条纹，以及在第一基本上清晰的条纹和第一基本上不透明条纹之间 是比第一宽度窄的第二宽度的第二基本上不透明的条纹，以及基本上第二宽度的第二基本上清晰的条纹。 在一些实施例中，多个交替的相对较窄的透明和不透明条纹位于相对较宽的第一基本上清晰的条纹和第一基本上不透明的条纹之间，以便投影光学系统的光学器件与投影光图案之间的相对运动 成像时间（梯形积分）平滑所得到的图案，以提供投影光的线性正弦波状图案。

公开(公告)号：US4684858A

公开(公告)日：1987-08-04

申请号：US771667

申请日：1985-09-03

申请人： John Ma ,  Steven Weiss

发明人： John Ma ,  Steven Weiss

IPC分类号： G05D3/10 ,  H02P5/06

CPC分类号： G05D3/10 ,  G05B2219/37171 ,  Y10S388/903 ,  Y10S388/912

摘要： An improved system is provided for accurately referencing the revolving motion of electric motors used as positioning devices, and is particularly applicable to the automatic positioning and repositioning of ground station antennas in the reception of satellite TV signals.The system utilizes the action of the positioning motor itself as a reference and involves the extraction and counting of variations in the form of pulses produced in the current within the motor as a result of pulses generated, during motor operation, by the commutation process. A low impedance source senses the motor current pulses and feeds them to an active lowpass filter which suppresses any high frequency noise produced during motor commutation. Peak following circuitry, including separate positive and negative peak detectors, detects and follows the positive and negative peaks of the motor current pulses and produces a pulsating output waveform which is proportional to the number of motor current pulses detected by the peak detectors. The output pulses can be counted to provide an accurate referencing of the motor revolving motion with improved resolution and reduced susceptibility to measurement errors.

摘要翻译： 提供了一种改进的系统，用于精确地参考用作定位装置的电动机的旋转运动，并且特别适用于在接收卫星电视信号时地面站天线的自动定位和重新定位。 该系统利用定位电动机本身的作用作为参考，并且涉及通过换向过程在电动机运行期间产生的脉冲的结果，提取和计数在电动机内的电流中产生的脉冲形式的变化。 低阻抗源感测电动机电流脉冲，并将其馈送到有源低通滤波器，其抑制在电动机换向期间产生的任何高频噪声。 峰值跟随电路，包括单独的正和负峰值检测器，检测并跟随电动机电流脉冲的正和负峰值，并产生脉冲输出波形，该波形与峰值检测器检测到的电机电流脉冲数成比例。 可以对输出脉冲进行计数，以提高电机旋转运动的精确参考，改善分辨率，降低对测量误差的敏感性。

公开(公告)号：US3946319A

公开(公告)日：1976-03-23

申请号：US466579

申请日：1974-05-03

申请人： John Ma ,  Akio Tanaka

发明人： John Ma ,  Akio Tanaka

IPC分类号： H03J5/02 ,  H03J7/28 ,  H04B1/16

CPC分类号： H03J7/28 ,  H03J5/0245

摘要： An all-electronic television tuning system has a sequentially accessible multi-position two digit memory coupled to a viewer controlled channel number selection means for providing storage and recall of selected two digit channel numbers in a sequence established by loading selected channel numbers into fifteen of sixteen serial memory locations. The system has program and operate modes, corresponding respectively to storage and recall of channel number information, and the memory has a sixteenth, particular location accessible only in the operate mode for providing immediate all channel tuning control for the viewer irrespective of the pre-programmed channel number sequence.

摘要翻译： 全电子电视调谐系统具有顺序可访问的多位置两位数存储器，其耦合到观看者控制的频道号选择装置，用于按照通过将所选频道号加载到十六进制十六进制而建立的序列中提供所选择的两位数字频道号的存储和调用 串行存储器位置。 系统具有分别对应于信道号信息的存储和调用的程序和操作模式，并且存储器具有第十六个特定位置，仅在操作模式下可访问，以便为观看者提供立即的所有通道调谐控制，而不管预编程 频道序号。

公开(公告)号：US4619000A

公开(公告)日：1986-10-21

申请号：US654201

申请日：1984-09-24

申请人： John Ma

发明人： John Ma

IPC分类号： H03D7/16 ,  H03J3/00 ,  H04B1/18 ,  H03J1/16

CPC分类号： H03D7/161 ,  H03J3/00

摘要： The disclosure describes an improved CATV converter that incorporates an intermediate frequency filter and amplifier unit that includes first and second tunable circuits. Each tunable circuit has a fixed capactive element and a variable inductance means for tuning the tunable circuit. The first and second tuned circuit are transmissively coupled to one another through a slit in a shield which otherwise shields one tunable circuit from another. The intermediate frequency filter and amplifier unit also includes an FET for amplifying a narrow band intermediate frequency signal and a third tunable circuit comprising the output capacitance of the FET and a variable inductance means for tuning the third tunable circuit.

摘要翻译： 本公开描述了一种改进的CATV转换器，其包括中频滤波器和放大器单元，其包括第一和第二可调谐电路。 每个可调谐电路具有固定的有源元件和用于调谐可调谐电路的可变电感装置。 第一和第二调谐电路通过屏蔽中的狭缝彼此透射耦合，否则屏蔽另一个可调谐电路。 中频滤波器和放大器单元还包括用于放大窄带中频信号的FET和包括FET的输出电容的第三可调电路和用于调谐第三可调电路的可变电感装置。

公开(公告)号：US3931579A

公开(公告)日：1976-01-06

申请号：US457010

申请日：1974-04-01

申请人： John Ma ,  Akio Tanaka

发明人： John Ma ,  Akio Tanaka

IPC分类号： H03J5/02 ,  H03J7/08 ,  H03J7/28 ,  H04B1/34

CPC分类号： H03J7/08 ,  H03J5/0245 ,  H03J7/28

摘要： A signal recognizing television tuning system employing a varactor tuner and a channel number computer for supplying derived channel numbers and intrachannel fractions, based upon the local oscillator frequency, to a comparator which controls a ramp voltage source for the varactor tuner. A digital counter supplies a selected channel number to the comparator and the ramp voltage is changed until (1) equality exists between both derived and selected channel numbers and (2) the intrachannel fraction is within predetermined limits such that the system is tuned to receive only signals falling within a restricted frequency range. If no signal is recognized, the counter supplies a next adjacent channel number to the comparator. Signal recognition means stop further operation of the counter upon recognition of a signal within the restricted frequency range.

摘要翻译： 使用变容二极管调谐器的信号识别电视调谐系统和用于根据本地振荡器频率将导出的频道号和通道内分数提供给控制变容二极管调谐器的斜坡电压源的比较器的信道编号计算机。 数字计数器将所选通道号提供给比较器，并且斜坡电压改变，直到（1）在导出和选择的通道号之间存在相等性，（2）通道内分数在预定限度内，使得系统被调谐为仅接收 信号落在受限频率范围内。 如果没有识别到​​信号，则计数器向比较器提供下一个相邻的通道号。 信号识别意味着在识别受限频率范围内的信号时停止计数器的进一步操作。

公开(公告)号：US07845949B2

公开(公告)日：2010-12-07

申请号：US11884118

申请日：2006-01-13

申请人： Jason D. Wilkins ,  O. John Ma

发明人： Jason D. Wilkins ,  O. John Ma

IPC分类号： G09B23/28

CPC分类号： G09B23/286

摘要： The ultrasound training mannequin (100) is a device that provides a realistic medical training device for use by medical personnel, especially those in the field of emergency medicine, to gain experience in applying and analyzing the results of common ultrasound examinations. The mannequin (100) comprises a life-size model of the male torso. The mannequin (100) has a simulated human skin (20) and tissue structure (22) made of a silicone. Internal organs, such as the lungs, heart, liver, kidneys, gall bladder, urinary bladder, and spleen are placed inside the model in their normal occurring relative positions. Heavier organs are modeled with a variable density silicone material to simulate the actual sonic density of these organs. The lungs are modeled with a variable density foam material to simulate the sonic density of actual lungs. The mannequin (100) also includes artificial venous and arterial channels emanating from and terminating at the heart.

摘要翻译： 超声波训练人体模型（100）是一种为医疗人员，特别是急救医学领域的医疗人员提供实用的医疗训练装置，以获得应用和分析常见超声检查结果的经验。 人体模型（100）包括男性躯干的真人大小模型。 人体模型（100）具有模拟的人体皮肤（20）和由硅树脂制成的组织结构（22）。 诸如肺，心脏，肝脏，肾脏，胆囊，膀胱和脾脏的内部器官以其正常发生的相对位置放置在模型内。 重型器官用可变密度硅胶材料建模，以模拟这些器官的实际声音密度。 肺用可变密度泡沫材料建模，以模拟实际肺的声音密度。 人体模型（100）还包括从心脏发出并终止于心脏的人造静脉和动脉通道。

公开(公告)号：US06793233B2

公开(公告)日：2004-09-21

申请号：US09881427

申请日：2001-06-14

申请人： James Eckelberry ,  John Ma ,  Frank A. Maly, Jr. ,  Joe Melekian ,  Steven R. Miller ,  Nancy L. Saxon ,  Rajesh J. Somnay

发明人： James Eckelberry ,  John Ma ,  Frank A. Maly, Jr. ,  Joe Melekian ,  Steven R. Miller ,  Nancy L. Saxon ,  Rajesh J. Somnay

IPC分类号： B62D5300

CPC分类号： B62D53/068 ,  B60P1/00

摘要： A trailer slider pin control system is provided including a vehicle body and a rail supported along the body. The rails are moveable between a plurality of positions defined by a plurality of holes in the rail. A pin assembly is supported on the vehicle body and includes a pin moveable between unlocked and locked positions. The pin is disposed in the hole locking the rail to the vehicle body in the locked position. Conversely, the rail is free to move along the vehicle body in the unlock position. A sensor senses a location of a portion of the pin assembly, which corresponds to the unlock position. A vehicle speed control device, such as an engine, transmission, or braking system, is actuatable to limit the speed of the vehicle. A controller is connected to the sensor and the vehicle speed control device to actuate the vehicle speed control device to limit the speed of the vehicle in response to the sensors sensing the unlocked position. The controller may actuate an alarm to alert the vehicle operator that the pins are unlocked.

摘要翻译： 提供一种拖车滑块销控制系统，包括车体和沿主体支撑的轨道。 导轨可以在由轨道中的多个孔限定的多个位置之间移动。 销组件支撑在车身上并且包括可在解锁位置和锁定位置之间移动的销。 销钉设置在锁定位置的锁定轨道上的车身上。 相反，轨道可以在解锁位置沿着车体自由移动。 传感器感测针组件的对应于解锁位置的部分的位置。 诸如发动机，变速器或制动系统的车辆速度控制装置可以致动以限制车辆的速度。 控制器连接到传感器和车速控制装置，以响应于感测到解锁位置的传感器来致动车辆速度控制装置来限制车辆的速度。 控制器可以致动警报以警告车辆操作者销钉被解锁。

公开(公告)号：US4625183A

公开(公告)日：1986-11-25

申请号：US747657

申请日：1985-06-21

申请人： John Ma

发明人： John Ma

IPC分类号： H03B1/00 ,  H03B1/04 ,  H03B5/12 ,  H05K1/02 ,  H03B5/20

CPC分类号： H05K1/0243 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2201/0208 ,  H03B2202/042 ,  H05K1/0233 ,  H05K2201/0715 ,  H05K2201/086 ,  H05K2201/1003 ,  H05K2201/10166 ,  H05K2201/10265 ,  H05K2201/1053

摘要： A voltage controlled oscillator (VCO) for a television tuner for tuning a large number of television channels, including signals in the microwave frequency range, the VCO comprising a printed circuit (PC) board having a dielectric substrate, a patterned metal layer on one side of the substrate, and a substantially continuous metal layer forming a ground plane on the other side of the substrate, a transistor mounted on the ground plane side of the PC board, and having emitter, base and collector leads projecting laterally from the transistor, the base of the transistor being connected to the ground plane, a d-c supply circuit connected to the transistor, a tuned circuit connected across the collector and emitter of the transistor, the tuned circuit including at least one ground connection to the ground plane of the PC board, the d-c supply circuit, the tuned circuit, and the transistor having values which produce an oscillating output at a frequency of at least one GHz, and the ground connections being interconnected by a continuous wide area of the ground plane to provide a short-distance, low-loss path for ground currents at the operating frequency of the VCO.

摘要翻译： 一种用于电视调谐器的压控振荡器（VCO），用于调谐包括微波频率范围内的信号的大量电视频道，该VCO包括具有电介质基板的印刷电路板（PC）板，一侧上的图案化金属层 以及在基板的另一侧形成接地面的大致连续的金属层，安装在PC基板的接地面侧的晶体管，具有从晶体管侧向突出的发射极，基极和集电极引线， 晶体管的基极连接到接地平面，连接到晶体管的直流电源电路，连接在晶体管的集电极和发射极两端的调谐电路，该调谐电路包括至PC板的接地平面的至少一个接地连接 ，直流电源电路，调谐电路和晶体管具有以至少1GHz的频率产生振荡输出的值，并且地面c 连接通过接地平面的连续宽区域互连，以在VCO的工作频率处提供用于接地电流的短距离低损耗路径。

公开(公告)号：US4352209A

公开(公告)日：1982-09-28

申请号：US242908

申请日：1981-03-23

申请人： John Ma

发明人： John Ma

IPC分类号： H03B5/12 ,  H03D7/12 ,  H03D7/14 ,  H03D7/16 ,  H04B1/26

CPC分类号： H03D7/161 ,  H03B5/1203 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/1243 ,  H03D7/125 ,  H03D7/1408

摘要： A cable television up-down tuner includes a first frequency up conversion stage in which a first local oscillator, tunable over a wide frequency range, is coupled to a ring diode mixer having individual biasing networks in series with each diode. A combination high pass and low pass filter provides a bandwidth coupling of input signals to the mixer. An intermediate frequency amplifier couples the up converted signal to a second mixer. A fixed tuned second local oscillator down converts the intermediate frequency signal to a selected television channel frequency. The first local oscillator includes a printed circuit board transmission line resonator which is tuned by a varactor diode. The two local oscillators are positioned adjacent the corners of a quadrilateral housing and are isolated from each other by three wall-type shields.

摘要翻译： 有线电视上下调谐器包括第一升频转换级，其中在宽频率范围内可调谐的第一本地振荡器耦合到具有与每个二极管串联的各个偏置网络的环形二极管混频器。 组合的高通和低通滤波器提供输入信号到混频器的带宽耦合。 中频放大器将上变频信号耦合到第二混频器。 固定调谐的第二本地振荡器将中频信号转换为选定的电视频道频率。 第一本地振荡器包括由变容二极管调谐的印刷电路板传输线谐振器。 两个本地振荡器定位在四边形壳体的角落附近，并通过三个壁式屏蔽彼此隔离。

公开(公告)号：US06501554B1

公开(公告)日：2002-12-31

申请号：US09597865

申请日：2000-06-20

申请人： Joshua J. Hackney ,  John Ma ,  Arye Malek ,  Matthew M. McPherson ,  Xin Shi

发明人： Joshua J. Hackney ,  John Ma ,  Arye Malek ,  Matthew M. McPherson ,  Xin Shi

IPC分类号： G01B1124

CPC分类号： G01B11/00

摘要： In the context of a machine-vision system for inspecting a part, a method and apparatus to provide high-speed 3D (three-dimensional) inspection of manufactured parts. Parts are inspected to obtain dimensional and geometric information regarding such characteristics as sag or bow of subportions of the item, the angle of pitch, yaw, and or roll of one portion relative to another, heights of various formations on the part. In some embodiments, an array of height pixels is calculated, and regions of interest (ROIs) are located within the array, and the ROIs are used to determine characteristic geometries of the parts being measured. One measurement system includes a light source, an imager, and a computer. Light source provides projected patterned light on the object useful to obtain 3D geometric information about the object. The imager has a reception optical axis that intersects the object when the machine-vision system is in operation. In some embodiments, imager includes at least three rows of imaging pixels positioned to receive light shone onto the object by the light source. The computer system calculates three-dimensional object-geometry data of the object using signals from the imager, and computes at least a first characteristic plane and a second characteristic plane of the object from the calculated object-geometry data. The method provides a process for obtaining and manipulating image data (e.g., make calculations on ROI data within one or more arrays of height pixels) to determine characteristics of the parts.

摘要翻译： 在用于检查零件的机器视觉系统的上下文中，提供对制造零件的高速3D（三维）检查的方法和装置。 检查部件以获得关于物品的下垂或弓部分，俯仰角，偏转角和/或相对于另一部分的滚动的特征的尺寸和几何信息，部件上各种形式的高度。 在一些实施例中，计算高度像素的阵列，并且感兴趣区域（ROI）位于阵列内，并且使用ROI来确定被测量的部件的特征几何形状。 一个测量系统包括光源，成像器和计算机。 光源在物体上提供投影图案光，有助于获得关于物体的3D几何信息。 当机器视觉系统运行时，成像器具有与物体相交的接收光轴。 在一些实施例中，成像器包括至少三行成像像素，其被定位成通过光源将光照射到物体上。 计算机系统使用来自成像器的信号来计算物体的三维物体几何数据，并根据计算出的物体几何数据计算物体的至少第一特征平面和第二特征平面。 该方法提供用于获得和操纵图像数据的过程（例如，对一个或多个高度像素阵列内的ROI数据进行计算）以确定部件的特性。