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JP62266472 |
PURPOSE: To enable the measuring of a phase difference accurately, handily and directly along with a cost reduction and a simplified measuring work, by using a digital data indicating instantaneous values of two AC quantities of electric...
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JP62250371 |
PURPOSE: To enable the calculation of a phase difference accurately regardless of its change occurring at the time of adjustment of a waveform, by identifying a 2-phase input signal with the specified threshold level and correcting a for...
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JP62218877 |
PURPOSE: To effect proper processing of a signal-processing circuit, by supervising a phase-difference condition between 2 synchronous signals of non- synchronization and of nearly the same frequency by comparing member, selector, counte...
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JP62204166 |
PURPOSE: To enable the selective execution of series type processing and parallel type processing by controlling the change over of switches and the phases of phase signals. CONSTITUTION: (a) and (c) as well as (b) and (d) of the switch ...
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JP62198771 |
PURPOSE: To correct a count error without using a clock of high repetitive frequency by dividing one period T of a clock equally by (m) and delaying a rectangular wave by T/m at every time. CONSTITUTION: A delay circuit 13 consists of m/...
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JP62196921 |
PURPOSE: To estimate correctly the difference of phase between the symbol timing of the analog demodulation signal and a reference clock regardless of the value of the input phase difference, by eliminating the discontinuous points of th...
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JP62187257 |
PURPOSE: To calculate a frequency to be extracted and the levels of an effective and an ineffective component by multiplying a quantity to be measured by sine waves and cosine waves of three phases as units and further multiplying the DC...
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JP62121368 |
PURPOSE: To know easily a phase difference of the second input signal by delaying the first input signal by a delay time of two kinds or more. CONSTITUTION: The first input signal is outputted by being delayed by times T1WT4, respectivel...
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JP62111518 |
PURPOSE: To expand the logic range of a phase control system without narrowing the control band by comparing the phase of a reference frequency division signal being the result of 1/N frequency division to a reference signal with the pha...
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JP62108163 |
PURPOSE: To operate the phase of a signal at a high operation speed, by reading out phase values corresponding to each point in the space of orthogonal coordinates, whose addresses are designated by two kinds of detecting signals and ope...
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JP62087874 |
PURPOSE: To make it possible to measure the phase of a signal to be measured with high accuracy, by mixing a reference signal with a first oscillation signal in a first frequency mixing circuit while mixing said signal with a second osci...
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JP62075271 |
PURPOSE: To improve measurement accuracy by holding a trigonometric function wave signal which is outputted from an oscillation circuit by a holding circuit upon receipt of a one-shot pulse and outputting the same as conversion output. C...
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JP62056016 |
PURPOSE: To detect the phase state of the 1st and 2nd signals by providing the 1st and 2nd means outputting the two signals in response to a clock signal or outputting them with a delay, the 1st and 2nd exclusive OR circuit and the 1st a...
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JP62038369 |
PURPOSE: To prevent a large noise outputted in the discontinuous region of the transfer characteristic, by providing a delay circuit or phase shift circuit which changes the phase difference between the reference input and the signal inp...
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JP62036566 |
PURPOSE: To enable highly accurate detection regardless of the polarity in the phase difference and fine difference in the phase, by driving a reversible counter according to the advance or delay signal while a phase comparator outputs a...
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JP62008064 |
PURPOSE: To make it possible to stabilize the operation of a mixer, by inputting a bias CW (continuous wave) signal to the output terminal of the mixer for detecting the phase between pulse signals. CONSTITUTION: A bias CW-IF signal is i...
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JP61280578 |
PURPOSE: To facilitate the return of phase comparing output to an origin even when a phase is largely shifted by the effect due to disturbance and to prevent a lead-in time, by applying limiter to phase comparing output to hold said outp...
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JP61274276 |
PURPOSE: To enable accurate and stable measurement of the time difference between two input signals to be performed, by inserting a jitter removal circuit into the output side of a voltage comparator for making a start pulse and a stop p...
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JP61256262 |
PURPOSE: To obtain a highly accurate time difference meter wherein the self- testing function with respect to the correlation operation between signals is embodied by simple circuit constitution, by providing a change-over switch to a co...
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JP61254864 |
PURPOSE: To easily perform the highly accurate self-test of time difference measurement, by providing a means which produces the highly accurate time difference that can be found by a simple calculation between two signals which perform ...
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JP61240167 |
PURPOSE: To effectively utilize the titled apparatus in the designing of a buffer in the interface of a transmission system by enabling the quantitative detection of the variation in the phase difference of two signal pulses, by detectin...
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JP61240168 |
PURPOSE: To obtain high measuring accuracy by a relatively small circuit, by using a frequency converter circuit for forming a local oscillation wave with frequency proportional to a wave to be measured. CONSTITUTION: A reference wave si...
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JP61237536 |
PURPOSE: To measure a correct level by making the frequency of a band pass filter having resolution in use coincident with an intermediate frequency and using a correction value to measure the level of an input signal to be measured. CON...
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JP61217772 |
PURPOSE: To enable accurate measurement of phase difference value at a desired accuracy, by forming a third signal with the frequency of F=fn/(n-1) [wherein (n) is measuring accuracy and fi frequency) of F to sample one of two signals at...
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JP61207973 |
PURPOSE: To obtain continuously a required measurement value without requiring a special computer by constituting a correlation type time difference meter of a correlation function calculator and prescribed analog circuit and extracting ...
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JP61187663 |
PURPOSE: To detect real phase angle difference, by calculating the difference of transmission delay times, generated when voltage measured values at two points were transmitted, from a voltage phase angle difference calculated from the m...
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JP61184468 |
PURPOSE: To make it possible to directly measure the ignition angle of a thyristor, by counting the frequency multiplied output of an AC power source during a period from the oscillation of a phase control signal to the finish of a half-...
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JP61172070 |
PURPOSE: To easily detect the phase difference of a plurality of signals with high accuracy, by converting two or more of signals, of which the phases must be detected, to state signals before and behind a reference time signal and analy...
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JP61164353 |
PURPOSE: To measure a phase shift with high accuracy quantatively by measuring quantatively a phase shift, displaying it and raising automatically an alarm and transmitting it if a phase shift more than the predetermined phase shift take...
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JP61151473 |
PURPOSE: To make it possible to detect phase difference at a high speed, by constituting the title phase detection circuit from an input signal phase shifter, the divider of the output signal and input signal of the phase shifter, the in...
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JP61149866 |
PURPOSE: To inspect the phase difference of an internal signal accurately with simple constitution by outputting a pulse signal corresponding to the time difference of variations between two logical signals in a semiconductor integrated ...
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JP61145928 |
PURPOSE: To improve locking characteristics and response characteristics by switching a lead phase difference signal to be outputted when a lead phase input is given with the presence of a lead phase difference signal and switching the o...
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JP61138174 |
PURPOSE: To eliminate substantially the influence of noise and to measure an exact phase difference by determining the integrated output of the 2nd wave between π/2W3π/2 phase angle of a reference wave. CONSTITUTION: A max. and min. de...
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JP61045626 |
PURPOSE: To prevent malfunction due to noise by generating a pulse differentiating an input pulse at its leading and trailing edge at each input and inputting the differentiated pulse to an FF. CONSTITUTION: The leading edge of an input ...
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JP61028824 |
PURPOSE: To enhance the accuracy of the titled electrode by making said electrode freely deformable from a plane to a semi-circular shape and facilitating the attachment thereof in a closely contacted state, by forming a flexible materia...
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JP60239686 |
PURPOSE: To make it possible to smoothly keep time measuring action, by preventing the generation of trouble in time measuring function even if the response signal to a question signal is lost. CONSTITUTION: The rectangular pulse signal ...
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JP60235071 |
PURPOSE: To obtain a phase meter capable of easily sensing phase difference, by displaying the phase difference between sound signals in a state classified into a same phase and an inverse phase by color. CONSTITUTION: Same phase and inv...
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JP60220871 |
PURPOSE: To detect the phase difference of an optional frequency with the precision of the pulse width of a clock by controlling the number of input clocks to a counter according to the phase difference of a zero-cross detection output. ...
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JP60220870 |
PURPOSE: To detect the relative phase difference between two input signals by providing an FF which holds the state of an input signal with the edge of a reference signal. CONSTITUTION: A wave front differentiating circuit 6 detects the ...
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JP60219563 |
PURPOSE: To enable the detection of phase shift with good economical efficiency even in a system different in a frequency band, by subtracting the value obtained by counting an input signal by the output of a comparator and a reference s...
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JP60211372 |
PURPOSE: To detect the phase difference between input signals by generating a pulse signal according to wave fronts of a reference signal and the input signal. CONSTITUTION: When the reference signal (b) is inputted to a wave front diffe...
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JP60210025 |
PURPOSE: To simplify the circuit constitution and to obtain an accurate phase error signal by detecting that the phase of a sample pulse gets out of a slope section of a slope signal and shifting the slope signal by a phase amount equiva...
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JP60205266 |
PURPOSE: To measure fluctuations in the power system with the detection of time-sharing changes in the voltage phase angle by starting the measuring of voltage in a time-sharing manner at a fixed interval (ΔT) the moment the polarity of...
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JP60181659 |
PURPOSE: To make it possible to arbitrarily set the gain of an amplifier, by issuing the output of a reversal amplifier and that of a non-reversal amplifier while alternately changing over both outputs corresponding to a reference signal...
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JP60174958 |
PURPOSE: To enable accurate decision on the phase whether it is single or three phase by judging the phase based on a line voltage signal and a phase current signal. CONSTITUTION: Line voltages P12 and P32 are converted into line voltage...
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JP60171467 |
PURPOSE: To contrive to enhance measuring accuracy, by a method wherein a weighing function generator, a holding integrator, a sum-of-products operator and a max. value calculator are successively started with respect to respective N-pie...
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JP60165556 |
PURPOSE: To improve the precision of phase discrimination by providing the phase discriminating circuit which decides on the phase relation between the plural quantities of AC input electricity, and shifting the phase of the 1st quantity...
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JP60161565 |
PURPOSE: To reduce numbers of gates of measuring apparatuses of frequency and phase deviations, by generating measured value clip control signal corresponding to a decoder output, etc. at a time when a measured value by a N-step counter ...
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JP60157054 |
PURPOSE: To obtain high reliability in discriminating phase by counting a signal wave from a constant frequency oscillator by a reversible counting circuit which controls according to the phase relation between the two quantities of elec...
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JP60115845 |
PURPOSE: To separate the flaw signal of an extremely small defect easily and precisely by adding proper offset voltages to orthogonal components of a detection signal and calculating respective phases. CONSTITUTION: When a specific flaw ...
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