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Patent Searching and Data


Matches 451 - 500 out of 2,101

Document Document Title
JP2001284965A
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...  
JP2001272426A
To increase the reliability of a monitoring operation and a control operation by discriminating an abnormality. A first high-frequency generation means 1 and a second high-frequency generation means 2 by which a first high-frequency sign...  
JP2001264370A
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 t...  
JP3232560B2
To compensate a current error between a reference current and an output current and to operate this circuit even with a low voltage by providing a 3rd transistor and a constant current source between the collector of a 1st transistor and...  
JP2001242203A
To execute higher harmonic measurement by injecting dispersedly an in-phase current synchronized by a non-integer-fold frequency of a system fundamental frequency from each low rank system to the high rank system side, regardless of the ...  
JP2001242202A
To inject dispersedly an in-phase current or a voltage synchronized by a non-integer-fold frequency of a system fundamental frequency to the measuring side, namely, to the high rank system side from injection devices of each low rank sys...  
JP2001244792A
To attain high-speed filtering processing, using a low-speed device.A 1st arithmetic section 31 applying an arithmetic operation expressed in a transfer function 1/(1-α02z-2) to a received data stream x[n] which consists of two sets of ...  
JP3228414B2
To provide a phase comparator which makes it difficult to generate a dead zone in error detection characteristics, even if an error detection range varies relatively. Error signals UPB and DWB are varied in level with a reference signal ...  
JP2001215248A
To provide a phase detecting system for a power transmission/ distribution line capable of detecting phases being the same at two arbitrary points on the line.A power reception/distribution system is equipped with daughter stations 1a, 1...  
JP2001510566A
(57) So that an incoming-data series may be sampled on the frequency which is not equal to the multiple of the integer of the data transfer rate of a summary incoming-data series, and a divisor. A sampling means to operate under control ...  
JP3190363B2  
JP3189149B2  
JP3187081B2  
JP2001183411A
To provide a partial discharge measuring system, a partial discharge measuring device, a voltage phase measuring device, and a partial discharge measuring method, which do not need to transmit real-time voltage phase information. This pa...  
JP3203909B2
PURPOSE: To provide the A/D converter correcting a digitized error caused by fluctuation of an operation condition by itself and the physical quantity detector provided with the A/D converter. CONSTITUTION: A physical quantity detector d...  
JP2001165968A
To measure the frequency difference between two input signals to a phase detector, even when the frequency difference is higher than the frequency of a wander component to be measured.An input signal and a reference signal are frequency-...  
JP3174570B2  
JP3197955B2
PURPOSE: To provide a phase digitizer which has got rid of demerit inherent in a conventional phase digitiser, by using a trigger circuit. CONSTITUTION: A phase digitizer 20 to convert phase information of analog signal into digital indi...  
JP2001156755A
To obtain a phase detection circuit whose operating margin is sufficiently ensured.A data signal D1 to be checked and a clock signal C1 are given to an F/F1 of a D-F/F circuit, a signal C1' resulting from delaying the signal C1 by a dela...  
JP2001133492A
To simplify a digital filter being incorporated into a jitter-measuring instrument. A digital filter being incorporated into a jitter-measuring instrument is composed of a first adder 31 for subtracting a feedback signal that is located ...  
JP2001127623A
To solve a problem such that an operator can hardly observe a change in an output potential level by an analog output circuit in the case of measuring an output jitter quantity in various phase synchronization circuit inside an LSI. The ...  
JP2001117652A
To provide a phase difference control circuit for adjusting the phase difference between the voltage waveform and current waveform of an AC output from a power source to a load into an optimal state. A phase difference control circuit 1 ...  
JP3184125B2
To enable an estimation system to correctly estimate a phase angle by setting a compensator for compensating a phase delay between a subtracter obtaining an error of both input signals and a loop filter filtering an output of the subtrac...  
JP3184459B2
To build a spot-network power receiving facility which can be interconnected to a generator system or a system in which main and standby power receiving facilities are connected to a spot-network power supply bus. When a power supply cir...  
JP3170961B2
PURPOSE: To improve the response up to binary encoding by making it possible to deal with the counted values or the like of the upper and lower bits of a binary digital signal expressing a pulse phase difference. CONSTITUTION: A ring osc...  
JP2001069128A
To reduce a measurement error resulting from a wiring path and to measure a phase offset with high precision by outputting the output signal of a phase-locked loop(PLL) circuit to a 2nd output terminal through a selector circuit when a 1...  
JP2001066356A
To easily correct phase differences that multiple reception systems have with high precision. The IF part 1b of a receiver mixes its input signal with a local signal as the output of a local oscillator by using a mixer 3 to convert the f...  
JP2001053819A
To obtain a phase detector with a reduced phase rotation error by adjusting the decision area in accordance with the strength of a noise. A first multiplexer part 30 is constituted of a multiplexers A30A and B30B. The multiplexer A30A ou...  
JP3161484B2
PURPOSE: To precisely measure a phase difference even when the frequency of a standard signal is fluctuated in a phase difference measuring circuit of synchronous rectifying system for detecting the fluctuation of phase of a signal compo...  
JP2001041968A
To provide a measuring apparatus, for the time difference of a signal, by which time difference information is output precisely from a detection signal having a phase difference. Outputs of sensors 11A, 11B are input to a time-difference...  
JP3158299B2
PURPOSE: To facilitate the measurement of the phase difference between the commercial power waveform and the video signal waveform of a power synchro nizing camera which uses the commercial frequency as the vertical synchronizing frequen...  
JP2001502050A
(57) The digital frequency detector (10) and method of detecting the arbitrary small phase changes between summary signal wave type and a reference waveform in digital one. The both sides of a reference waveform and a signal wave form ar...  
JP2001034949A
To provide a circuit for detecting the jitter which can be composed of only binary digital processing circuits adapted to digital signals, reduces the entire circuit scale and the power consumption and raises the detection accuracy. A ph...  
JP2001021596A
To make detectable a phase difference between two input signals by counting a second input signal by a counter reset for every change in a first input signal and outputting a digital value according to the frequency ratio of the two inpu...  
JP3123525B2  
JP2000314753A
To eliminate the nee of a phase measuring instrument, and to measure mutual modulation distortion generated by a DUT or a phase relation between a mixed wave and a fundamental wave. Setting values p1, p2 of a phase shifter 5 where an inp...  
JP3108809B2  
JP2000304785A
To provide a phase difference detecting circuit which can detect a signal having a large phase difference, such as the wander of a high-frequency signal, with high resolution by means of a lower-speed circuit element by constituting the ...  
JP2000298149A
To provide a low-cost method of good operability, either for detecting whether or not phase differences between input and output signals of systems are adjusted between a plurality of systems or for adjusting between the plurality of sys...  
JP3099892B2  
JP3099327B2  
JP3099312B2  
JP2000283792A
To enhance noise resistance by preventing erroneous operation due to noise and to prevent erroneous operation by detecting failure of an encoder. The signal error detector for encoder comprises means 3 for receiving first and pulses and ...  
JP3090179B2  
JP2000249732A
To miniaturize a circuit scale and to reduce a burden on software. In this phase comparing circuit, a rotational direction detection circuit 1 detects relative phase relation between pulse signals A, B to output a normal direction detect...  
JP3086302B2  
JP2000235063A
To provide a device and a method for detecting a delay trouble of a phase lock loop circuit. A frequency impulse is impressed as a reference clock signal to an examined phase lock loop circuit 52, and a wave form of a signal output from ...  
JP2000216636A
To compensate a current error between a reference current and an output current and to operate this circuit even with a low voltage by providing a 3rd transistor and a constant current source between the collector of a 1st transistor and...  
JP3071456B2  
JP3070049B2  

Matches 451 - 500 out of 2,101