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JP3568099 |
To provide a digital phase information generating device for generating plural kinds of arbitrary phase information. An adder 1 adds a phase progress input X and the output of a selecting device 4. A holding device 2 holds the output of ...
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JP3566174 |
To perform the exact edge arrangement of high resolution without requiring a system clock of a frequency extremely higher than the frequency of a synthetic clock signal. This device is composed of a system clock signal source for a syste...
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JP3561119 |
To constitute a synchronization controller which is not affected by the distortion and unbalance of AC signals of software using a microprocessor, etc. Three-phase AC signals are synchronized to the output of a frequency divider by means...
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JP2004132824 |
To provide a delay measuring mechanism in an LSI chip capable of precisely measuring a delay amount of a delay element in the LSI chip.A delay element cycling pulse generating part 1 generates a cycling pulse according to the delay amoun...
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JP3546013 |
To reduce a scale of a circuit of a signal processing device for measuring pulse intervals of plural input signals. First through third signals 101-103 are time-divisionally selected, and an increment value stored in an address correspon...
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JP3541345 |
To easily measure and adjust quadrature modulation waves and to reduce excessive circuits mounted on a substrate as much as possible. In the quadrature modulation circuit board 5 of a double conversion system, the monitor output of respe...
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JP3540797 |
To solve such a problem (that measuring precision gests worse in &verbar a1&verbar <&verbar a2&verbar when a complex amplitude ratio W=a2/a1 of two waves a2, a1 is found) in a 6-port type correlator of a highly precise and a simple phase...
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JP2004061339 |
To make a phase detector actualizable phase detection without using a second clock of a different frequency.N-pieces of midway nodes CK1(1) to CK1(N) made by N-dividing a delay circuit 1 using a basic clock 1 as input are used as clock i...
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JP2004029032 |
To provide a device which detects frequencies without using phase detectors and counters.In the device, values of voltage VR, VS and VT of a three-phase AC power source are converted into values of voltage Vd, Vq on d-q axes rotation coo...
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JP3508718 |
To accurately detect an amplitude of an input sine wave shaped signal by a simple composition. An analog signal including a sine wave signal Ax.sin(2πFt+ψ) of a frequency the same as a known reference analog sine wave signal A0.sin2πf...
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JP3507838 |
To detect the phase of a power fundamental wave in real time for following. A programmable timer 19 generates a trigger with a timing where one wavelength section of the current or a voltage of a power fundamental wave is divided into N ...
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JP2003344465 |
To detect a phase difference at a high speed between a traveling wave and a reflected wave, for example. A signal generation step is executed for generating generated signals Sf1 and Sf2 of the same frequency but different from each othe...
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JP2003315395 |
To improve the practicality by expanding a measuring range of phase difference by a phase comparator, having a phase comparison range of 180 degrees, to 360 degrees.A first phase comparator 9 compares the phases of reflected wave B gener...
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JP2003287555 |
To provide a phase noise measurement method whose measurement accuracy is improved and to provide a phase noise-measuring apparatus using the method.In the phase noise-measuring apparatus that has a PLL circuit and an analysis section fo...
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JP3481065 |
To prevent the malfunction of a circuit in a DLL(delay locked loop) circuit using a high speed clock signal by comparing the phases of output signals of first and second control circuits frequency-divided according to a third signal. A f...
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JP3479055 |
To provide a device which is capable of exactly detecting jitters for detecting jitter quantities from signals at two sampling points around an edge which are subjected to analog/digital conversion, and to provide a phase synchronizing l...
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JP2003279606 |
To provide a method for measuring a phase of a substantially sinusoidal signal which can be implemented in the form of a simple digital circuit of a small surface area and which can use a sampling frequency only slightly greater than a m...
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JP2003270277 |
To provide a means for easily, simply, quickly and accurately calculating instantaneous reactive power and a reactive power effective value and provide a method for measuring them.Instantaneous values of a voltage V(t) are sampled from t...
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JP2003258557 |
To provide a phase shift detection apparatus capable of surely detecting a phase shift between two phases of a 2-phase oscillator having two DDS (direct digital synthesizer) oscillators without the need for a DC voltmeter with high preci...
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JP2003250296 |
To reduce an influences in current ripples due to switching of power transistors in an inverter.The inverter comprises power transistors in bridge configuration and a feedback diode connected in parallel with the power transistors. The i...
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JP3464792 |
To easily visually grasp the phase relation between the stator winding and rotator magnetic pole of a synchronous motor. When the phase difference angle generated between the stator winding and rotor magnetic pole of the synchronous moto...
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JP3463575 |
To provide a phase comparator which consists of a full digital circuit of high performance at a low cost. An exclusive OR is secured via an exclusive OR gate 22 and accordingly the phase difference value is detected for the signals which...
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JP3460145 |
To provide a frequency measuring apparatus in which a frequency can be measured in real time by a digital processing operation. A signal conversion part 21 comprises an A/D converter and an orthogonal demodulator, it converts a signal S ...
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JP3455982 |
PURPOSE: To improve a detection speed without deteriorating the detection resolution of a pulse phase difference by this ring oscillator by connecting even pieces of inversion circuits like a ring, and revolving stably a pulse edge. CONS...
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JP2003215183 |
To solve such a problem (that measuring precision gests worse in a1
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JP2003194954 |
To discriminate the type of precise charged particles and accurate energy, to enable the accurate measurement of a charged particle having high energy, and to detect a fault in a measuring apparatus to continue observation in a mode corr...
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JP2003194863 |
To provide a power swing detecting device for an electric power system capable of surely detecting the power swing generated among a group of power generators at both sides of a connection line of the electric power systems regardless of...
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JP3441169 |
PURPOSE: To provide a synchronization type signal detecting device capable of measuring a high-speed phenomenon with good accuracy and capable of being miniaturized. CONSTITUTION: The measured signal II is received by a conductive detect...
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JP3438342 |
PURPOSE: To obtain a pulse phase difference encoding circuit of which the range of errors is uniform and the precision is excellent. CONSTITUTION: This circuit is equipped with a pulse circling circuit 10 formed of a large number of inve...
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JP2003163708 |
To detect the displacement of a phase at high speed in simple configuration.A phase area detecting means 21 finds one of a plurality of angle areas E(0)-E(M-1), M equals to three or more obtained by equally dividing the angle range of 2Ï...
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JP3424990 |
PURPOSE: To output control signal of the same pulse width independently of a lead phase of any clock signal so long as the phase difference between two clock signals is the same. CONSTITUTION: N-channel MOS TRs 2, 3 are connected in para...
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JP2003104826 |
To provide a W/O/W composite emulsion having excellent stability with time and a feeling of use, and especially usable in medicines or cosmetics.This W/O/W composite emulsion comprises (A) a silicone oil, (B) cholesterol and/or phytoster...
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JP2003098202 |
To provide a measuring device and method capable of attaining high speed, high accuracy, and low cost without influence of noise and spurious in measuring the phase delay characteristic between an input signal and an output signal of a t...
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JP2003098233 |
To realize an operation time measuring circuit capable of easily determining whether the time between a reference clock and an output data is contained in a target time or not in a small circuit configuration.This operation time measurin...
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JP3412015 |
To provide an in-station error compensating method capable of easily calibrating an in-station error based on any factor such as in-station delay, delay fluctuation, and frequency characteristics across the whole band of a reception sign...
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JP2003075479 |
To provide a time measuring apparatus capable of accurately measuring a very short time interval between edges a signal has.The tester 300 comprises a reference input signal generator 102 for generating a reference input signal having a ...
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JP3404538 |
To make a phase detecting filter circuit, smaller, lighter and at a lower cost as well as more reliable and more easily adjustable. This filter circuit comprises resistors, capacitors and reactors, an AC power voltage being added to a ci...
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JP2003066073 |
To provide a phase measuring instrument capable of performing a precise phase measurement and extending the phase measuring range, and a microwave densitometer using it.An up-down counter 2 performs, on the basis of various control signa...
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JP2003057275 |
To calculate the phase difference between two signal waveforms under test having the same period, even with waveform distortions, without using the FFT operation. For arithmetically obtaining the phase difference between at least two sig...
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JP2003042850 |
To obtain a phase measuring apparatus in which a measuring range can be expanded on the basis of an equivalent phase measurement by two wavelengths and which can measure a face shape having a large step or the like. In a dual-wavelength ...
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JP3391178 |
To reduce the harmonic components of a sine wave current of a power-system linked power converting means, by generating the output voltage command value of the power converting means so as to add to it the correcting quantity for correct...
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JP2002372572 |
To provide a testing method and a testing device for testing in a short time whether the difference between time up to the leading edge of a reference clock and time up to the leading edge of each data and the difference between time up ...
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JP2002357648 |
To easily visually grasp the phase relation between the stator winding and rotator magnetic pole of a synchronous motor. When the phase difference angle generated between the stator winding and rotor magnetic pole of the synchronous moto...
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JP2002329599 |
To provide a device for detecting a phase between incident power imparted to load and the reflected power.This device is provided with a coupler for generating first and second signals which are coupled with load and show the incident po...
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JP2002316269 |
To provide a monitoring device for a spot welding with which normal/ defective condition of the spot welding is stably decided on the basis of a vibration generated during the welding.The monitoring device for the spot welding is provide...
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JP2002305509 |
To provide a synchronism measuring instrument that can measure skew between a plurality of data transmission lines without complicating an internal circuit by using a PN signal or a fixed pattern signal used for bit error detection in a ...
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JP2002298368 |
To provide a phase measuring method and a phase measuring instrument, by which a phase of a peak signal such as an Lpp signal is correctly measured.A signal decimated by a 1/128 decimation part 15 is orthogonally detected by an orthogona...
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JP3358965 |
To continue the operation of a power converter by detecting the phase of system voltage which is accurate and positive and controlling it stably, even if abnormality is generated in an AC system. A reference phase θFi, obtained by integ...
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JP2002269898 |
To provide a method and device by which a state of internal memory in a writing device for a data carrier can be recognized at any time, and also a request to a transmission bus is suppressed, when monitoring the state of the internal me...
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JP2002246896 |
To provide an in-station error compensating method capable of easily calibrating an in-station error based on any factor such as in-station delay, delay fluctuation, and frequency characteristics across the whole band of a reception sign...
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