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1. 发明授权

US5519820A Waveform display apparatus for easily realizing high-definition waveform observation 失效
标题翻译：波形显示装置，用于轻松实现高清晰度波形观察
公开(公告)号：US5519820A
公开(公告)日：1996-05-21
申请号：US385555
申请日：1995-02-08
申请人： Takehiko Kawauchi , Yoshifumi Imazu , Katsuhiko Kamiyama , Mitsuyoshi Takano , Katsuhisa Iiyoshi , Takahiro Wada , Aiichi Katayama
发明人： Takehiko Kawauchi , Yoshifumi Imazu , Katsuhiko Kamiyama , Mitsuyoshi Takano , Katsuhisa Iiyoshi , Takahiro Wada , Aiichi Katayama
IPC分类号： G01R13/34 , G01R23/16 , G01R23/163 , G01R23/173 , G01R27/32 , G06T3/00
CPC分类号： G01R23/163 , G01R13/345 , G01R23/16 , G01R23/173 , G01R27/32 , Y10S715/97
摘要： A measurement unit U100 measures an input signal to be measured by sweeping frequencies in a measurement range having a predetermined frequency band so as to obtain waveform data to be developed on the frequency axis such as spectrum data in, e.g., a spectrum analyzer. The waveform data obtained by the measurement of the measurement unit U100 is displayed by a display device 500 via a display data processor U20 included in a control unit U200 to be described later to be developed on the frequency axis of the display device, i.e., in correspondence with the measurement frequencies. The control unit U200 includes a measurement controller U30 for controlling the measurement unit U100 so as to display waveform data obtained by enlarging or reducing waveform data, before a measurement frequency condition is changed, at a predetermined magnification to have a predetermined point on the frequency axis as the center on the basis of a change in measurement frequency condition set by a condition setting unit U900, and an enlargement display/stable display processor U40 for controlling the display data processor U20. The enlargement display/stable display processor U40 realizes high-definition waveform observation as the gist of this invention, and substantially has a function of controlling the display device U500 as the control unit U200.
摘要翻译：测量单元U100通过在具有预定频带的测量范围内的频率扫描来测量要测量的输入信号，以获得在频率轴上显影的波形数据，例如频谱分析仪中的频谱数据。通过测量单元U100的测量获得的波形数据由显示装置500经由包括在稍后描述的控制单元U200中的显示数据处理器U20显示在显示装置的频率轴上，即在与测量频率的对应关系。控制单元U200包括用于控制测量单元U100的测量控制器U30，以便以预定的倍率显示在测量频率条件改变之前通过放大或缩小波形数据而获得的波形数据，以在频率轴上具有预定点作为基于由条件设置单元U900设置的测量频率条件的改变的中心，以及用于控制显示数据处理器U20的放大显示/稳定显示处理器U40。放大显示/稳定显示处理器U40实现高清晰度波形观察作为本发明的要点，并且基本上具有控制显示装置U500作为控制单元U200的功能。

2. 发明授权

US5434954A Waveform display apparatus for easily realizing high-definition waveform observation 失效
标题翻译：波形显示装置，用于轻松实现高清晰度波形观察
公开(公告)号：US5434954A
公开(公告)日：1995-07-18
申请号：US776259
申请日：1991-11-27
申请人： Takehiko Kawauchi , Katsuhiko Kamiyama , Katsuhisa Iiyoshi , Aiichi Katayama
发明人： Takehiko Kawauchi , Katsuhiko Kamiyama , Katsuhisa Iiyoshi , Aiichi Katayama
IPC分类号： G01R13/34 , G01R23/16 , G01R23/163 , G01R23/173 , G01R27/32 , G06T3/40
CPC分类号： G01R23/163 , G01R13/345 , G01R23/16 , G01R23/173 , G01R27/32 , Y10S715/97
摘要： A measurement unit U100 measures an input signal to be measured by sweeping frequencies in a measurement range having a predetermined frequency band so as to obtain waveform data to be developed on the frequency axis such as spectrum data in, e.g., a spectrum analyzer. The waveform data obtained by the measurement of the measurement unit U100 is displayed by a display device 500 via a display data processor U20 included in a control unit U200 to be described later to be developed on the frequency axis of the display device, i.e., in correspondence with the measurement frequencies. The control unit U200 includes a measurement controller U30 for controlling the measurement unit U100 so as to display waveform data obtained by enlarging or reducing waveform data, before a measurement frequency condition is changed, at a predetermined magnification to have a predetermined point on the frequency axis as the center on the basis of a change in measurement frequency condition set by a condition setting unit U900, and an enlargement display/stable display processor U40 for controlling the display data processor U20. The enlargement display/stable display processor U40 realizes high-definition waveform observation as the gist of this invention, and substantially has a function of controlling the display device U500 as the control unit U200.
摘要翻译： PCT No.PCT / JP91 / 00425 Sec。 371日期1991年11月27日 102（e）日期1991年11月27日PCT 1991年3月30日PCT公布。公开号WO91 / 15776 日期：1991年10月17日。测量单元U100通过在具有预定频带的测量范围内扫频来测量待测量的输入信号，以获得频率轴上要开发的波形数据，例如频谱数据，例如，频谱分析仪。通过测量单元U100的测量获得的波形数据由显示装置500经由包括在稍后描述的控制单元U200中的显示数据处理器U20显示在显示装置的频率轴上，即在与测量频率的对应关系。控制单元U200包括用于控制测量单元U100的测量控制器U30，以便以预定的倍率显示在测量频率条件改变之前通过放大或缩小波形数据而获得的波形数据，以在频率轴上具有预定点作为基于由条件设置单元U900设置的测量频率条件的改变的中心，以及用于控制显示数据处理器U20的放大显示/稳定显示处理器U40。放大显示/稳定显示处理器U40实现高清晰度波形观察作为本发明的要点，并且基本上具有控制显示装置U500作为控制单元U200的功能。

3. 发明授权

US5706203A Waveform measuring apparatus for easily providing pretrigger function by using FIFO memory 失效
标题翻译：波形测量装置，可通过使用FIFO存储器轻松提供预触发功能
公开(公告)号：US5706203A
公开(公告)日：1998-01-06
申请号：US591173
申请日：1996-01-16
申请人： Takehiko Kawauchi
发明人： Takehiko Kawauchi
IPC分类号： G01R13/20 , G01R13/34 , G11C7/00
CPC分类号： G01R13/345
摘要： A waveform measuring apparatus having a dummy readout circuit which applies first read signals of a same period as sampling signals to a read clock terminal of a FIFO memory during an interval between a first moment that a trigger enable signal is outputted from a prepoint counter when digital samples have been stored in the FIFO memory up to a predetermined number (a prepoint value) and a second moment that a trigger signal is generated by a trigger signal generating circuit. Concurrent reading from and writing to the FIFO memory is thereby permitted with a difference between the write pointer value and the read pointer value kept equal to the prepoint value. When a trigger signal is generated, digital data are written into the FIFO memory until the write pointer value catches up with the read pointer value and digital data are read from the FIFO memory by second read signals applied to it by a control unit. A display unit displays the waveform of the measured signal.
摘要翻译：一种具有虚拟读出电路的波形测量装置，该数字式读出电路在数字化时刻之间的间隔期间，将与采样信号相同周期的第一读取信号施加于FIFO存储器的读取时钟端口样本已被存储在FIFO存储器中直到预定数量（预取值）和触发信号由触发信号产生电路产生的第二时刻。因此，写指针值与读指针值之间的差值保持与预取值相等的同时读写FIFO存储器。当产生触发信号时，数字数据被写入FIFO存储器，直到写指针值赶上读指针值，并且通过由控制单元施加到其的第二读信号从FIFO存储器中读取数字数据。显示单元显示测量信号的波形。

4. 发明授权

US4845691A Group delay time measurement apparatus with automatic aperture value setting function 失效
标题翻译：具有自动光圈值设定功能的组延迟时间测量装置
公开(公告)号：US4845691A
公开(公告)日：1989-07-04
申请号：US200699
申请日：1988-05-31
申请人： Hiroshi Itaya , Takehiko Kawauchi
发明人： Hiroshi Itaya , Takehiko Kawauchi
IPC分类号： G01R27/28
CPC分类号： G01R27/28
摘要： A frequency converter receives a signal to be measured and a local oscillation signal supplied from a local oscillator and ouputs an intermediate frequency signal. A phase detector detects a phase of the intermediate frequency signal. An A/D converter outputs a digital value corresponding to a phase detection output. A memory stores a plurality of aperture values. Each of the aperture values is read out with a predetermined frequency band which is incremented at a predetermined step. A first controller causes the local oscillator to oscillate signals having first and second frequencies separated from each other by the aperture value in the vicinity of a desired measurement frequency. An arithmetic unit calculates a group delay time of the signal to be measured in accordance with the two digital values and the aperture value corresponding to the respective phase detection outputs when the local oscillator oscillates the signals having the first and second frequencies. A second controller causes the memory to start or to stop reading and incrementing the aperture value when the group delay time is determined to be smaller or larger than a reference value.

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