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    • 3. 发明授权
    • Acquisition system for a long record length digital storage oscilloscope
    • 采集系统用于长记录长度数字存储示波器
    • US06807496B2
    • 2004-10-19
    • US10139012
    • 2002-05-02
    • John J. Pickerd
    • John J. Pickerd
    • G01R1302
    • G01R13/345G01R13/28
    • A real time digital storage oscilloscope acquires a long data record in an acquisition memory and processes the data of the long data record to search for predetermined events. Upon detection of such a predetermined event, circuitry generates an event detect signal, and data comprising an acquisition frame surrounding the event is applied to a waveform processing and display system. The long data record can be replayed in order to perform additional searches throughout the data record using different search criteria, thereby permitting multiple waveforms to be displayed simultaneously, each being captured as a result of a different user-defined event. A screen display may be programmed to display a different kind of event such as Runt signal, Overshoot, or Pulsewidth Violation in each waveform, or to display multiple occurrences of the same kind of event such as Runt signal in each waveform.
    • 实时数字存储示波器在采集存储器中获取长数据记录,并处理长数据记录的数据以搜索预定事件。 在检测到这样的预定事件时,电路产生事件检测信号,并且将包括事件的采集帧的数据应用于波形处理和显示系统。 可以重播长数据记录,以便使用不同的搜索条件在整个数据记录中执行附加搜索,从而允许同时显示多个波形,每个波形作为不同的用户定义事件的结果被捕获。 屏幕显示可以被编程以在每个波形中显示不同类型的事件,例如Runt信号,过冲或脉冲宽度违例,或者显示出每个波形中相同类型事件(例如Runt信号)的多次出现。
    • 5. 发明申请
    • Displaying a number of measurement curves
    • 显示多个测量曲线
    • US20040034500A1
    • 2004-02-19
    • US10458966
    • 2003-06-11
    • Michael Goericke
    • G06F015/00
    • G01R13/28G01R19/2516
    • A method of displaying a number of measurement curves is described. The measurement curves are displayed in at least two windows. Each one of the windows comprises two axes. One or more measurement curves are displayed in each one of the windows. The method comprises the steps of changing the scale of one of the curves in the direction of at least one of the two axes by a user and synchronizing at least one of the other curves of one or more other windows with respect to one of the two axes depending on said change carried out by the user.
    • 描述显示多个测量曲线的方法。 测量曲线显示在至少两个窗口中。 每个窗口包括两个轴。 每个窗口中都会显示一个或多个测量曲线。 该方法包括以下步骤:由用户改变两个轴中的至少一个方向上的曲线中的一个曲线的比例,并且使两个轴中的一个之一上的一个或多个其他窗口的至少一个其它曲线同步 轴取决于用户执行的所述更改。
    • 6. 发明申请
    • Acquisition system for a long record length digital storage oscilloscope
    • 采集系统用于长记录长度数字存储示波器
    • US20030208330A1
    • 2003-11-06
    • US10139012
    • 2002-05-02
    • John J. Pickerd
    • G06F019/00
    • G01R13/345G01R13/28
    • A real time digital storage oscilloscope acquires a long data record in an acquisition memory and processes the data of the long data record to search for predetermined events. Upon detection of such a predetermined event, circuitry generates an event detect signal, and data comprising an acquisition frame surrounding the event is applied to a waveform processing and display system. The long data record can be replayed in order to perform additional searches throughout the data record using different search criteria, thereby permitting multiple waveforms to be displayed simultaneously, each being captured as a result of a different user-defined event. A screen display may be programmed to display a different kind of event such as Runt signal, Overshoot, or Pulsewidth Violation in each waveform, or to display multiple occurrences of the same kind of event such as Runt signal in each waveform.
    • 实时数字存储示波器在采集存储器中获取长数据记录,并处理长数据记录的数据以搜索预定事件。 在检测到这样的预定事件时,电路产生事件检测信号,并且将包括事件的采集帧的数据应用于波形处理和显示系统。 可以重播长数据记录,以便使用不同的搜索条件在整个数据记录中执行附加搜索,从而允许同时显示多个波形,每个波形作为不同的用户定义事件的结果被捕获。 屏幕显示可以被编程以在每个波形中显示不同类型的事件,例如Runt信号,过冲或脉冲宽度违例,或者显示出每个波形中相同类型事件(例如Runt信号)的多次出现。
    • 7. 发明授权
    • Method and apparatus for obtaining voltage-isolated measurement channels
with an isolation transformer and multiplier
    • 用隔离变压器和乘法器获得电压隔离测量通道的方法和装置
    • US5594329A
    • 1997-01-14
    • US526650
    • 1995-09-11
    • Rudolf G. van EttingerMartinus P. Eikendal
    • Rudolf G. van EttingerMartinus P. Eikendal
    • G01R1/30G01R13/28G01R19/00
    • G01R1/30G01R13/28H04L7/0008
    • A method and apparatus for obtaining a voltage-isolated measurement channel in a measurement instrument is provided. An input signal is multiplied with a clock signal to obtain a modulated input signal that is coupled to an input winding of a balanced transformer. The modulated input signal is electromagnetically coupled from the input winding to an output winding. At the same time, the input winding and the output winding are voltage-isolated, meaning that the portion of the measurement channel coupled to the input winding is "floated" with the input signal whereas the remaining portion of the measurement channel is referenced to instrument ground. A sampling circuit coupled to the output winding samples the modulated input signal in the manner of a synchronous detector to extract the original input signal voltage which is provided to an analog to digital converter which generates the digital measurement values. Each measurement channel is voltage-isolated from the instrument and from all other measurement channels in the instrument.
    • 提供了一种用于在测量仪器中获得电压隔离测量通道的方法和装置。 输入信号与时钟信号相乘以获得耦合到平衡变压器的输入绕组的调制输入信号。 调制输入信号从输入绕组电磁耦合到输出绕组。 同时,输入绕组和输出绕组是电压隔离的,这意味着耦合到输入绕组的测量通道的部分与输入信号“浮动”,而测量通道的剩余部分参考仪器 地面。 耦合到输出绕组的采样电路以同步检测器的方式采样调制的输入信号,以提取提供给产生数字测量值的模数转换器的原始输入信号电压。 每个测量通道与仪器和仪器中所有其他测量通道电压隔离。
    • 8. 发明授权
    • Video synthesizer
    • 视频合成器
    • US4574278A
    • 1986-03-04
    • US496192
    • 1983-05-19
    • Steven P. Apelman
    • Steven P. Apelman
    • G01R13/28G01R13/34G09G1/00
    • G01R13/28G01R13/34
    • A video synthesizer is adapted for connection to the input circuitry of an oscilloscope, and includes sampling and multiplexing circuitry for presentation of a multiplicity of input signals to a single channel of the oscilloscope. The signals are sampled sequentially, and the samples of respective ones of the signals are multiplexed with corresponding reference voltage levels of a voltage divider so as to vertically displace the signals on the face of the oscilloscope. For periodic input signals, the sequential sampling is repeated at a rate which is not harmonically related to the periodicity of the input signals to fully regenerate the signal waveforms on the oscilloscope. A memory is provided for storing intervals of the input signals in the case of nonperiodic signals, the stored signals then being outputted to the sampling and multiplexing circuitry. By presetting an address counter of the memory, and by selecting a data sampling rate of the memory, the displayed waveforms can be displaced along the x axis of the oscilloscope and expanded to facilitate visual inspection. To provide a maximum rate of sampling, the multiplexing is accomplished with an interlacing of the reference voltages to minimize voltage jumps and reduce the bandwidth of the sample sequence.
    • 视频合成器适于连接到示波器的输入电路,并且包括用于将多个输入信号呈现给示波器的单个通道的采样和复用电路。 信号被顺序采样,并且各个信号的样本与分压器的相应参考电压电平多路复用,以垂直位移示波器表面上的信号。 对于周期性输入信号,以与输入信号的周期性不相关的速率重复顺序采样,以完全再生示波器上的信号波形。 提供存储器用于在非周期性信号的情况下存储输入信号的间隔,然后存储的信号被输出到采样和复用电路。 通过预置存储器的地址计数器,并通过选择存储器的数据采样率,显示的波形可以沿着示波器的x轴移位,并扩展以便于目视检查。 为了提供最大采样率,通过对参考电压进行隔行扫描来实现多路复用,以使电压跳变最小化并降低采样序列的带宽。