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Patent Searching and Data


Matches 201 - 250 out of 2,128

Document Document Title
JP5214163B2  
JP5188449B2  
JP5181427B2  
JP2013053929A
To provide a phase-contrast measurement system capable of accurately measuring a phase contrast by improving a way of processing by a Lissajous method.A phase-contrast measurement system 1 comprises: an A/D converter 7 that applies A/D c...  
JP5165712B2  
JP5154594B2  
JP5119291B2  
JP5103840B2  
JP5103710B2  
JP5092490B2  
JP5076730B2  
JP2012211896A
To provide a method of determining at least one parameter (frequency, phase angle, amplitude) of a sinusoidal signal generated by a power grid.The frequency of the signal is determined iteratively based on a linear relationship among the...  
JP5055016B2  
JP5022545B2  
JPWO2010098460A1
デジタル回路を用いて位相差を高精度に計測 できる位相測定装置を実現する。位相測定装 置1は、それぞれTDCを用いたバッファ遅 延測定回路110と位相差測定回路12...  
JPWO2010098460A
A phase measuring device which can measure phase contrast with high precision using a digital circuit is realized. Phase measuring device 1 is provided with buffer delay measuring circuit 110 which used TDC, respectively, phase contrast ...  
JP5006190B2  
JP4973498B2  
JP2012108085A
To provide a harmonic calculation parameter analysis apparatus which accurately estimates a harmonic calculation parameter and is so accurate as to estimate a worst value of the harmonic calculation parameter, and a harmonic calculation ...  
JP2012093341A
To detect frequency of input signals, the frequency being unknown or changing over time, without using a PLL.A signal detection apparatus 1 includes a control block composed of a band-pass filter 2 whose coefficient a1 is variable, a fir...  
JP2010212929A5  
JP4887322B2  
JP2012026738A
To give means for performing binary phase detection with a high signal-to-noise ratio for a feeble micro wave signal.In the state where a signal desired to detect is inputted to a resonator, the resonator is parametric-oscillated. By uti...  
JP2011247852A
To provide a phase detection method of an AC signal having one or more phases, of which a frequency range is preliminarily known, of a voltage or the like of a power system.Following steps (a) to (f) are repeatedly executed; the step (a)...  
JP4833775B2  
JP2011242195A
To simply discriminate a phase of a distribution line of each phase constituting a high-voltage distribution line using an inexpensive apparatus in a phase discrimination portion.A phase discrimination apparatus includes: firstly measuri...  
JP2011242211A
To provide a phase difference measuring device capable of continuously and stably measuring the phase difference between two input signals in a range of 0 to 360 degrees.A phase difference is calculated by subjecting two input signals R ...  
JP2011208975A
To provide a device for detecting a phase angle difference of a power system capable of detecting accurately a voltage phase angle difference between optional nodes in the power system easily without requiring complicated calculation.A t...  
JP2011179988A
To provide a digital test plug available for both CTT and PTT, and capable of preventing unexpected accidents, such as, electrical shocks and measuring electric power, and so on.The digital test plug includes: common conductors 24, dispo...  
JP4771572B2  
JP4773078B2  
JP4766434B2  
JP4767907B2  
JP4765100B2  
JP2011169625A
To quickly and accurately detect a phase difference between two signals.The phase difference detection device 1, for detecting a phase difference between detection signals S1 and S2, includes a signal detection part 2 detecting the detec...  
JP4761724B2  
JP4723652B2  
JP2011122907A
To notify a user of erroneous connection intelligibly, even in the case of an inexpensive segment type liquid crystal or 7-segment LED which is a main current of an electronic indicating instrument.This instrument includes a measuring op...  
JP4688390B2  
JP4681731B2  
JP4667918B2  
JP4656652B2  
JP4657151B2  
JP4628096B2  
JP4593993B2  
JP2010266411A
To provide a synchronous phasor measuring device capable of further improving high-speed and high-precision properties. This synchronous phasor measuring device includes a voltage-measuring section 1 for generating analogue data in a tim...  
JP2010258605A
To provide a pulse detector which generates a sample hold signal and holds a signal level of a high-frequency signal even though the attenuation of the signal level is slow when a load having a high Q value to generate plasma is connecte...  
JP2010212929A
To provide a PLL performance measuring device accurately evaluating a PLL circuit.A moving average for a phase error detected in a phase locked loop circuit is obtained. On the basis of the comparison of the moving average and a threshol...  
JP4513077B2  
JP2010161797A
To provide a high performance phase detector including a local digital oscillator for generating a digital reference signal of programmable frequency and phase. A phase detector accumulates a difference in phase between a digital referen...  

Matches 201 - 250 out of 2,128