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Patent Searching and Data


Matches 651 - 700 out of 2,047

Document Document Title
JPH0879323A
PURPOSE: To obtain a clock phase detection circuit in which a clock phase at a sampling time is detected from a digital modulation signal having only a specific frequency component. CONSTITUTION: A chirp conversion circuit 2 applies chir...  
JPH0827305B2  
JPH0827306B2  
JPH0812561B2  
JPH0812214B2  
JPH0821856A
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...  
JPH07311228A
PURPOSE: To provide a phase-difference detecting circuit, wherein the phases of an inverter and a commercial power supply are aligned. CONSTITUTION: An inverter output-voltage waveform Vi is subtrated from a commercial voltage waveform V...  
JPH07106023B2  
JPH07283722A
PURPOSE: To provide a digital control type PLL device and also to provide a pulse generator and a frequency variable oscillator which are suitable to construct the PLL device. CONSTITUTION: A PLL device divides a data obtained by coding ...  
JPH07509051A  
JPH0789128B2  
JPH0787452B2  
JPH07245876A
PURPOSE: To perform the outputting of the desired power factor of an inverter tied to a power system wherein its high-power-factor control is included too, without the deterioration of the characteristic of the function whereby the conti...  
JPH07239240A
PURPOSE: To raise a sampling frequency without lowering the amplification degree of the signal cycle to enhance the detection accuracy in a physical quantity detection device wherein a physical quantity is converted to variation of a cyc...  
JPH0783584B2  
JPH0782047B2  
JPH07225250A
PURPOSE: To provide a phase detector by which accurate detection values can be obtained. CONSTITUTION: This detector detects an unknown phase by using detection signals which have a cycle T1 and change against the unknown phase in a sine...  
JPH07225249A
PURPOSE: To obtain a detector for amplitude and phase by which the amplitude and phase of AC signal can be detected at a high speed without phase delay. CONSTITUTION: The frequency of AC signal v detected by a AC signal detecting means 4...  
JPH07219668A
PURPOSE: To decrease the number of data in the data table while securing necessary precision by compressing the data so that an input data range corresponding to the same output data becomes wider as an input increases. CONSTITUTION: Whe...  
JPH0769367B2  
JPH07183800A
PURPOSE: To simltaneously and highly accurately perform the coding of the phase difference of plural pulse signals or frequency conversion by using a ring oscillator constituted by connecting plural inversion circuits as one delay device...  
JPH07181234A
PURPOSE: To provide a device for inspecting a skew between two clock signals among a plurality of clock signals having the same frequency. CONSTITUTION: Two clock signals as each pair of possible clock signals CK1 to CKn respectively ena...  
JPH07174798A
PURPOSE: To display the correlation of two signals with an arbitrary frequency and waveform using a pattern peculiar to the combination of the signals with a simple circuit configuration. CONSTITUTION: Two input signals A and B are compa...  
JPH07177007A
PURPOSE: To obtain a phase comparator with wide phase comparison range and easy to reduce the number of circuit elements. CONSTITUTION: A period where the difference of logic level between a first digital signal and a second digital sign...  
JPH0760995B2  
JPH07159458A
PURPOSE: To accurately detect the phase change of received signals by detecting whether the received signals lead or lag to a reference signal in phase in addition to the phase difference of the received signals against the reference sig...  
JPH0758330B2  
JPH07154256A
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...  
JPH0757065B2  
JPH07131972A
PURPOSE: To make it possible to obtain a synchronous phase signal by quickly following up to a sudden change in the voltage phase of an AC power supply by controlling the slope of a second triangular wave signal in such a manner that the...  
JPH07120511A
PURPOSE: To realize a digital phase indicator which can stably operate and correctly display even if waveforms include noise or difference in voltage and current amplitude exists. CONSTITUTION: The digital phase indicator comprises range...  
JPH0738013B2  
JPH07110349A
PURPOSE: To make it possible to measure a phase difference in the display range of 0 to 360° by executing computation on the basis of the phase difference determined by a digital signal processor (DSP) and a leading or lagging phase sig...  
JPH0799450A
PURPOSE: To provide a phase difference coding circuit by which a the number circulation is counted at one location. CONSTITUTION: A NAND g00 and inverters g01-g62 are connected in series and an output of the inverter g62 and a pulse PA a...  
JPH0732588B2  
JPH0777544A
PURPOSE: To lessen the electric power loss of a port by installing a power divider and a phase shift circuit and using a part of a plurality of detectors as matching detectors and the rest as unmatching detectors. CONSTITUTION: A signal ...  
JPH0743404A
PURPOSE: To enable highly accurate detection of a phase difference between an optical signal and an electrical signal by computing a product of a voltage signal and the optical signal with a photoconductive type photodetector directly to...  
JPH0735793A
PURPOSE: To obtain a compact and inexpensive phase detection circuit by reducing circuit scale in reading a phase difference of AC waveform into a microprocessor. CONSTITUTION: A phase detection circuit is provided with first and second ...  
JPH0730429A
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...  
JPH0722941A
PURPOSE: To obtain a regenerated clock that follows input data by controlling the edge position of the regenerated clock in a regenerated clock generating means so as to be one-sidedly forwarded or delayed to the edge of the input data. ...  
JPH0712864A
PURPOSE: To allow highly precise harmonic-free detection of phase difference through simple circuitry by dividing an AC voltage through a resistor and a capacitor and measuring the phase difference of an object through the use of the div...  
JPH0712863A
PURPOSE: To allow highly precise harmonic-free detection of phase difference through a simple circuitry by connecting a resistor and a capacitor in series with an AC power supply and detecting the time width corresponding to the phase di...  
JPH077841A
PURPOSE: To detect the ground fault of an isolated or high-resistance-grounded three-phase one-circuit transmission line with a phase voltage detector installed to one phase and, at the same time, to detect the ground-fault phase. CONSTI...  
JPH075216A
PURPOSE: To achieve an easy to read display of a phase difference. frequency ratio and a phase lead and lag of a cyclic signal with respect to a reference signal. CONSTITUTION: Reference signals A1 and B1 shifted by 90° in phase are inp...  
JPH06351261A
PURPOSE: To allow phase detection of output current from a general purpose inverter having no circuit for detecting the phase of output current by externally providing a simple circuit. CONSTITUTION: An output current detection circuit 4...  
JPH0692992B2  
JPH06300796A
PURPOSE: To prevent an erroneous operation by toggling an FF when a counter for measuring a time width of a signal overflows, interrupting a calculator by a Q output of the FF, and overflow-processing it. CONSTITUTION: A carry terminal O...  
JPH0685488B2  
JPH06284578A
PURPOSE: To detect a step-out state without using a threshold, value by measuring power and voltage and detecting an oscillatory phenomenon in power system. CONSTITUTION: A measuring unit 1 is used for measuring active power and effectiv...  
JPH06284014A
PURPOSE: To make a delay time uniform due to a signal line and obtain uniform time resolution by setting signal line load capacitance to which plural delay elements are connected equivalent. CONSTITUTION: The NOT AND circuit NAND which i...  

Matches 651 - 700 out of 2,047