专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明公开

EP0456132A2 System for determining an alternating voltage and/or current 失效
标题翻译： Anordnung zur Feststellung von Wechselstrom und / oder Wechselspannung。
公开(公告)号：EP0456132A2
公开(公告)日：1991-11-13
申请号：EP91107220.5
申请日：1991-05-03
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Morita, Noboru , Kusunoki, Makoto
IPC分类号： G01R19/25 , G01R13/34 , G01R19/00
CPC分类号： G01R19/04
摘要： A system for detecting a voltage and/or current of a single phase and/or polyphase alternating current comprises a sample-hold circuit for detecting and holding instantaneous values of a plurality of sampling points at a fixed time period of the alternating current as sampled values, respectively, a first calculation circuit for calculating the real part and the imaginary part of the Fourier coefficient with respect to a fundamental wave and/or component of positive-phase sequence of the alternating current to be detected from the plurality of sampled values thus held to separate the real and imaginary parts thus calculated to output respective calculated values thereof, and a second calculation circuit for further applying a predetermined calculation to the calculated values of the real and imaginary parts to thereby calculate and output the amplitude of the fundamental wave and/or component of positive-phase sequence of the alternating current.
摘要翻译：用于检测单相和/或多相交流电压和/或电流的系统包括采样保持电路，用于在交流电的固定时间段内检测并保持多个采样点的瞬时值作为采样值第一计算电路，用于根据由此保持的多个采样值计算相对于基波的傅立叶系数的实部和虚部和/或待检测交流电流的正相序列的分量将由此计算的实部和虚部分离以输出其各自的计算值，以及第二计算电路，用于进一步对计算的实部和虚部的值进行预定计算，从而计算并输出基波的振幅和/ 或交流电的正相序列的分量。

62. 发明公开

EP0391577A3 Sampling circuits 失效
标题翻译：采样电路
公开(公告)号：EP0391577A3
公开(公告)日：1991-10-09
申请号：EP90303053.4
申请日：1990-03-21
申请人： THE GENERAL ELECTRIC COMPANY, p.l.c.
发明人： Joyce, Timothy Robert , Lester, Gerry
IPC分类号： H03L7/183 , G01R21/133 , G01R13/34
CPC分类号： G01R13/342 , G01R21/1331 , H03L7/183
摘要： A sampling circuit able to provide slipping samples of a signal at points-on-wave shifted by a desired fraction of a cycle of the sampled signal of frequency F including an arrangement (7, 9) which produces first and second synchronised periodic signals of frequency PF/M and KPFN respectively where K is an integer, P and M are relatively prime plural integers, P is greater than M and 1/N is a desired phase shift between two sets of samples to be produced by the circuit expressed as a fraction of a cycle of a sampled signal. A first sampling circuit (1) utilises the first periodic signal to control sampling of a signal (I) at the frequency of the first periodic signal and a second sampling circuit (3) utilises every KPth cycle of the second periodic signal before or after a sampling effected by the first sampling circuit to control sampling of a signal (V) at the frequency of the first periodic signal at points-on-wave phase shifted with respect to the points-on-wave sampled by the first sampling circuit. The circuit can be used for instance in reactive energy measuring devices.

63. 发明公开

EP0448322A2 Automatic extraction of pulseparametrics from multi-valued functions 失效
标题翻译： Automatische Bestimmung von Impulsparametern von Vielwert-Funktionen。
公开(公告)号：EP0448322A2
公开(公告)日：1991-09-25
申请号：EP91302303.2
申请日：1991-03-18
申请人： TEKTRONIX INC.
发明人： Kucera, Dennis W. , Meyers, Paul S.
IPC分类号： G01R13/34 , G01R19/17 , G01R29/02 , G01R13/20
CPC分类号： G01R13/325
摘要： A digital serial communication signal is characterized by automatic extraction of pulse parametrics. Such characterization includes the sampling of the signal over a plurality of sample periods and obtaining a database corresponding to signal amplitude and time values and total occurrences of such time-amplitude values. The database is held in a two-dimensional array of accumulators, where each accumulator corresponds to a time-amplitude value and holds the total number of occurrences for such time-amplitude value. The signal is then characterized by the total value held in each accumulator cell.
摘要翻译：数字串行通信信号的特征在于自动提取脉冲参数。这种表征包括在多个采样周期中对信号的采样，并且获得对应于信号幅度和时间值的数据库以及这种时间幅度值的总出现次数。数据库被保存在二维的累加器阵列中，其中每个累加器对应于时间幅度值，并且保存这种时间幅度值的总出现次数。然后，信号的特征在于每个累加器单元中保持的总值。

64. 发明公开

EP0444875A2 Method and apparatus for increasing throughput in random repetitive digitizing systems 失效
标题翻译：方法和装置增加随机序列的循环数字化系统的吞吐量。
公开(公告)号：EP0444875A2
公开(公告)日：1991-09-04
申请号：EP91301535.0
申请日：1991-02-26
申请人： Hewlett-Packard Company
发明人： Montijo, B. Allen
IPC分类号： G01R13/34 , G01R13/32
CPC分类号： G01R13/345
摘要： Circuits (260) for increasing throughput in random repetitive signal acquisition systems that use triggers (100). The circuits (260) allow the random repetitive signal acquisition systems to terminate an acquisition only when there is a high probability that usable samples have reached the systems. The circuits comprise logic elements (320) for producing a qualifier signal (350) having at least two input ports (330,340). A first delay element (300) is coupled to a first input (330) of the logic element (320) for introducing a first delay (270) in a sample signal (290), thereby producing a first delayed sample signal for setting the logic element (320) and enabling the qualifier signal (350). A second delay element (310) is coupled to a second input port (340) of the logic element (320) for introducing a second delay (280) in the sample signal (290), thereby producing a second delayed sample signal for resetting the logic element (320) and disabling the qualifier signal (350). The qualifying signal (350) qualifies a trigger signal produced by trigger circuitry (100) in the random repetitive signal acquisition system. The qualifier signal (350) is generally periodic and is particularly useful in qualifying a trigger signal in a digitizing oscilloscope.
摘要翻译：电路（260），用于在随机重复信号采集系统增加了产量确实使用了触发（100）。电路（260）允许所述随机重复信号采集系统，在采集终止只有当有一个很高的概率没有可用的样本已经到达系统。该电路包括用于产生具有至少两个输入端口（330.340）限定符信号（350）的逻辑元件（320）。第一延迟元件（300）联接到用于在采样信号（290）引入第一延迟（270），从而产生第一延迟采样信号用于设置逻辑的逻辑元件（320）的第一输入（330）元件（320）和使能信号限定符（350）。第二延迟元件（310）耦合到用于在采样信号（290）引入第二延迟（280），由此产生一个第二延迟采样信号用于复位逻辑元件（320）的第二输入端口（340）逻辑元件（320）和禁用限定符信号（350）。合格信号（350）由有资格在随机重复信号采集系统的触发电路（100）产生的触发信号。限定符信号（350）是基因反弹周期性的，并且是在数字示波器资格触发信号是特别有用的。

65. 发明公开

EP0349328A3 Self-adjusting oscilloscope 失效
标题翻译：自我调节OSCILLOSCOPE
公开(公告)号：EP0349328A3
公开(公告)日：1991-01-16
申请号：EP89306633.2
申请日：1989-06-29
申请人： TEKTRONIX INC.
发明人： Chao, Peter S. , Tilden, Mark D.
IPC分类号： G01R13/34 , G01R13/22 , G01R13/32 , G01R35/00
CPC分类号： G01R13/345 , G01R13/32 , G01R35/002
摘要： A digital oscilloscope has a vertical amplifier for adjustably offsetting and amplifying an input signal and a digitizer for digitizing the amplifier output signal after it reaches an adjustable trigger level to provide a data sequence controlling a waveform display on a screen. The oscilloscope includes a computer automatically adjusting trigger level, vertical gain, vertical offset, and digitizing frequency to provide a waveform display representing the amplifier output signal. The computer adjusts the trigger level while monitoring digitizer output to measure minimum and maximum peaks of the amplifier output signal and sets the trigger level between the measured peaks. The computer then iteratively adjusts amplifier gain and offset until it determines that a waveform display controlled by the digitizer output would have minimum and maximum peaks vertically separated by a substantial distance on the oscilloscope screen. The computer estimates the period of the input signal from the digitizer output sequence and adjusts digitizing frequency so that the digitizer output sequence represents a few cycles of the amplifier output signal.
摘要翻译：数字示波器具有用于可调整地偏移和放大输入信号的垂直放大器和用于在放大器输出信号达到可调触发电平之后数字化数字化器，以提供控制屏幕上的波形显示的数据序列。示波器包括计算机自动调整触发电平，垂直增益，垂直偏移和数字化频率，以提供表示放大器输出信号的波形显示。计算机调节触发电平，同时监视数字转换器输出，以测量放大器输出信号的最小和最大峰值，并设置测量峰值之间的触发电平。然后，计算机迭代地调整放大器增益和偏移量，直到它确定由数字转换器输出控制的波形显示具有在示波器屏幕上垂直分隔相当距离的最小和最大峰值。计算机估计来自数字转换器输出序列的输入信号的周期并调整数字化频率，使得数字转换器输出序列表示放大器输出信号的几个周期。

66. 发明公开

EP0290276A3 Digital waveforms display 失效
标题翻译：数字波形显示
公开(公告)号：EP0290276A3
公开(公告)日：1990-03-14
申请号：EP88304134.5
申请日：1988-05-06
申请人： Hewlett-Packard Company
发明人： Bush, Kevin M.
IPC分类号： G01R13/34 , G01R31/28 , G09G1/00
CPC分类号： G01R13/345 , G01R13/404 , G01R31/3177 , G06F11/25
摘要： Provided is a an overlaid digital signal waveform display 15A for a logic analyzer 10. The present invention allows the logic analyzer user to overlay, that is superimpose, individual digital waveforms within a function group of waveforms onto each other so that all the waveform transitions within the group appear at one level across the display screen of the logic analyzer. Thus, all waveforms within a functional group, such as all the address line waveforms of an address bus, can be overlaid onto each other. In addition, individual waveforms within the group can be shown isolated from the overlaid group.

67. 发明公开

EP0258956A3 Oscilloscope trace attribute control system 失效
标题翻译： OSCILLOSCOPE TRACE属性控制系统
公开(公告)号：EP0258956A3
公开(公告)日：1989-11-29
申请号：EP87301380.9
申请日：1987-02-18
申请人： TEKTRONIX, INC.
发明人： Rogers, Gregory S. , Bennington-Davis, Timothy E.
IPC分类号： G01R13/28 , G01R13/34
CPC分类号： G01R13/28
摘要： In a multiple trace oscilloscope wherein separate traces displayed on a cathode ray tube screen are updated in succession, a random access memory is addressed by the count output of a programmable counter which increments its count each time the oscilloscope finishes updating one trace prior to updating a next trace. Data stored in the random access memory at the storage location addressed by the count is utilized to control attributes of the next trace to be updated by controlling the switching positions of attribute control switches which select the horizontal, vertical and intensity control signals controlling the appearance of each trace.

68. 发明公开

EP0336470A1 Sampling system, pulse generation circuit and sampling circuit suitable for use in a sampling system, and oscilloscope equipped with a sampling system 失效
标题翻译：扫描脉冲产生电路以及用于在扫描系统和示波器具有扫描系统的使用采样电路。
公开(公告)号：EP0336470A1
公开(公告)日：1989-10-11
申请号：EP89200649.5
申请日：1989-03-15
申请人： FLUKE CORPORATION
发明人： Bilterijst, Jan Alice
IPC分类号： G11C27/02 , G01R13/34
CPC分类号： G01R13/34 , G11C27/024
摘要： A sampling system (1) is proposed which comprises a sampling circuit (2) for supplying a signal to be sampled and a pulse generation circuit (3) for generating two sampling pulses, which are opposite in phase, for the sampling circuit (2), in which system, in order to achieve as good balance as possible and in order to minimize influences due to parasitic effects which affect the balance, charge storage components are formed as the distributed capacitance of a symmetrically coupled microstrip transmission line (ptl1) and triggering and DC biasing of a step recovery diode (D3) in the pulse generation circuit (3) is carried out outside of the characteristic environment of the step recovery diode (D3) at a potential node (e3) of a reflection transmission line (rtl1, rtl2).
摘要翻译：取样系统（1），提出了一种用于向被采样的信号，并产生两个采样脉冲，在相位上相反的脉冲发生电路（3），用于采样电路包括：采样电路（2）（2），引发在该系统中，为了实现尽可能好的平衡越好，以最小化由于其中影响平衡寄生效应的影响，电荷存储组件形成：作为对称耦合微带传输线的（专利文献1）的分布电容和和阶跃恢复二极管（D3）中的脉冲发生电路（3）的DC偏置是在一个反射传输线的电势节点（E3）的阶跃恢复二极管（D3）的特性环境之外开展（RTL1， rtl2）。

69. 发明公开

EP0310249A1 Integrated superconducting sampling oscilloscope 失效
标题翻译： Integriertes supraleitendes Sampling-Oszilloskop。
公开(公告)号：EP0310249A1
公开(公告)日：1989-04-05
申请号：EP88308102.8
申请日：1988-09-01
申请人： HYPRES, INC.
发明人： Whiteley, Stephen R.
IPC分类号： G01R13/34
CPC分类号： G01R13/345
摘要： An Integrated Superconductor Sampling Oscilloscope may include a sampling gate utilizing superconductor devices such as a Josephson junction device as well as external circuitry for producing a visual representation of an input signal responsive to the output of the sampling gate. The oscilloscope may further comprise an attenuator for receiving the input signal, a trigger recognizer comprising superconductor devices which produces a pulse signal when the input signal from the attenuator exceeds a threshold level, a hold-off gate which produces an output signal when the pulse signal from the trigger recognizer is produced concurrently with a gating event, and electrical variable delay which may comprise superconducting devices and produces a delayed pulse signal in response to an output signal by the hold-off gate and a strobe pulse generator which produces a signal to the sampling gate in response to the pulse signal from the electrical variable delay output. The result is an oscilloscope achieving a low jitter trigger from the input signal itself so as to allow viewing of the leading pulse of an input signal.
摘要翻译：集成超导体采样示波器可以包括利用超导体器件（例如约瑟夫逊结器件）的采样门以及响应于采样门的输出产生输入信号的视觉表示的外部电路。示波器还可以包括用于接收输入信号的衰减器，触发识别器，包括当来自衰减器的输入信号超过阈值电平时产生脉冲信号的超导体器件;当脉冲信号产生输出信号时产生输出信号来自触发识别器与门控事件同时产生，以及可能包括超导装置的电可变延迟，并且响应于保持栅极的输出信号产生延迟的脉冲信号，以及选通脉冲发生器，其产生信号到采样门响应于来自电可变延迟输出的脉冲信号。结果是示波器从输入信号本身实现低抖动触发，以便允许观看输入信号的前导脉冲。

70. 发明公开

EP0235912A3 WAVEFORM DIGITIZER WAVEFORM DIGITIZER 失效
标题翻译：波形数字化仪波形数字化仪
公开(公告)号：EP0235912A3
公开(公告)日：1988-10-26
申请号：EP87300623
申请日：1987-01-26
申请人： TEKTRONIX, INC.
发明人： HOLLISTER, ALLEN LEONARD
IPC分类号： G01R13/20 , G01R13/22 , G01R13/34 , H03K5/135 , H03M1/10 , H03M1/12
CPC分类号： G01R13/34 , H03K5/135
摘要： A waveform digitizer includes a sampling bridge for producing a sequence of analog samples of an input waveform, the samples being calibrated by an amplifier having adjustable offset and gain and then converted to digital quantities for storage in an addressable memory. The digitizer also includes memory and time base control circuits permitting real and equivalent time sampling of repetitive waveforms and logic circuits providing hardware averaging of multiple data samples.
摘要翻译：波形数字转换器包括用于产生输入波形的模拟样本序列的采样桥，采样由具有可调偏置和增益的放大器校准，然后转换成数字量存储在可寻址存储器中。数字转换器还包括存储器和时基控制电路，允许对重复波形进行实时和等效时间采样，以及提供多个数据采样的硬件平均的逻辑电路。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式