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JPH01235877A |
PURPOSE: To obtain a method and a circuit for producing a saw-tooth signal by generating and integrating a square wave having a duty ratio corresponding to the difference of phase/frequency between an input signal and a reference signal....
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JPH01131171U |
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JPH01131172U |
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JPH01129669U |
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JPH01502299A |
A system and method is disclosed for detecting an abnormality in a network for distributing or transmitting electric power at a predetermined fundamental frequency. The system produces a signal representing the fundamental frequency and ...
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JPH0131144B2 |
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JPH0129425B2 |
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JPH01137819A |
PURPOSE: To quicken pull-in of speed or a phase by making the period of a slope narrow only when a 2nd signal rushes from the minimum or the maximum value of a trapezoidal wave into the slope part to add the hysteresis characteristic. CO...
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JPH0125293B2 |
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JPH01121773A |
PURPOSE:To detect a clock waveform without using any sampling clock whose timing needs to be adjusted and to detect even a slight phase shift by smoothing a dot OR waveform and detecting abnormality of a clock waveform as an analog conti...
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JPH0122774B2 |
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JPH01110253A |
PURPOSE: To measure the phase of a signal rapidly and accurately by maintaining the phase of a secondary electrical signal at a constant in a method for detecting the secondary electrical signal by the surface of a sample with particle b...
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JPH01110254A |
PURPOSE: To measure the phase of a signal rapidly and accurately by maintaining the phase of a secondary electrical signal at a constant in a method for detecting the secondary electrical signal by scanning the surface of a sample with p...
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JPH0119657B2 |
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JPH0191622A |
PURPOSE: To shorten sharply an operation time of obtaining a phase angle difference by computing the phase angle difference by the use of the effective power of a measured branch. CONSTITUTION: The state of connection of the whole electr...
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JPH0117545B2 |
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JPS6478171A |
PURPOSE: To automatically detect and set an optimum aperture by comparing a delay calculated from a phase detecting output from a phase detector and an aperture value derived from an aperture table, with a decided value determined in adv...
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JPS6469122A |
PURPOSE: To eliminate the phase comparison dead band of a digital phase locked loop(PLL) by resetting a comparator through the function of a charge pump having both the functions of charging and discharging. CONSTITUTION: High-speed char...
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JPS6466566A |
PURPOSE: To detect a phase difference accurately, by determining zero cross time Tx and Ty of two analog signals while zero cross time Tz is determined for one thereof to compute a phase difference between the analog signals from the tim...
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JPS645386Y2 |
A low frequency triangular waveform generator mixes two high frequency squarewaves having a constant frequency difference to produce a triangular waveform with a fundamental frequency equal to the difference in the fundamental frequencie...
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JPS6437882A |
PURPOSE:To detect the phase difference of superconductive currents between two points by obtaining magnetic flux generated around a superconductor from phase difference acquired by making reference electron beams emitted from an electron...
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JPS647344B2 |
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JPS646702B2 |
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JPS6419175U |
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JPS6418315A |
PURPOSE: To prevent the effect of unbalanced clock signals by starting a variable pulse at an edge of an input pulse, starting a reference pulse at an edge of a clock pulse and terminating them at an edge of a clock pulse at the end of a...
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JPS6413468A |
PURPOSE: To improve calculation accuracy by calculating a phase difference θbased on cosθ and sinθ, and using a cos system or a sin system properly according to the error of the phase difference θ is large or not. CONSTITUTION: The o...
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JPS643569A |
PURPOSE: To improve computation accuracy and detection responsiveness by using a first-in-first-out type memory, outputting data of 90° delay from input and making vector synthesis. CONSTITUTION: A clock generating circuit 11 generates ...
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JPS6367868B2 |
In navigation transmitters it is important that the phase difference between the carrier waves of a carrier signal and the carrier waves of sideband signals be held at a constant value. To accomplish this, the carrier waves are maintaine...
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JPS63317779A |
PURPOSE: To dispense with a phase comparator and to make complicated adjustment unnecessary, by inputting an input signal to a frequency converting part, a band-pass filter, an A/D converter and a plurality of fast Fourier transform oper...
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JPS63313081A |
PURPOSE: To obtain a vector analyzer which has low production cost and high detection accuracy by generating a two-phase signal by a counter consisting of a digital circuit and a ROM table. CONSTITUTION: To the output side of the counter...
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JPS63309867A |
PURPOSE: To execute a response at a high speed by a phase variation quantity and a phase variation direction which are obtained by presetting to a period counter by using the number of clock pulses when there is no phase variation, as a ...
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JPS6364086B2 |
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JPS63181961U |
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JPS6356504B2 |
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JPS63259474A |
PURPOSE: To enable highly accurate measurement of phase, by performing a double integration of a phase difference between a reference signal and an input signal. CONSTITUTION: Phase differences are compared with a phase comparator 5 betw...
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JPS6350894B2 |
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JPS63139559U |
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JPS63201515A |
PURPOSE:To find an accurate weighted mean value by finding the weighted sum vector of unit vectors corresponding to phase angles and finding the weighted mean value of the phase angles as its arctangent. CONSTITUTION:Input data thetai (i...
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JPS6340060B2 |
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JPS63117117U |
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JPS6338100B2 |
A phase detector is disclosed in which means are provided for sensing when two AC signals being subjected to phase difference measurement become close in phase, within a predetermined range, and for inverting one of these signals in phas...
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JPS63173918A |
A system for producing a digital representation of the value of an angle theta , typically a phase angle, from two analogue input quantities representative of A sin theta and A cos theta , where A is an amplitude factor, comprises logari...
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JPS6335944B2 |
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JPS6334985B2 |
A phase discriminator circuit is described comprising squaring circuits (10) and (12) to convert the input signals into square waves, an adder (14), a full wave rectifier (16) and a circuit (18) for altering the mean DC value of the rect...
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JPS6333339B2 |
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JPS63158485A |
PURPOSE: To reduce a phase error, by averaging the phase difference of a detection signal received without being passed through a delay circuit to the original detection signal and the phase difference of a detection signal received thro...
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JPS63139259A |
PURPOSE: To always accurately measure the cycle of discrimination data, by providing a test data generating part, a cycle detection part, a cycle detector and a variable frequency oscillator. CONSTITUTION: A test data generating part 7, ...
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JPS6328268B2 |
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JPS63501314A |
A digital phase frequency discriminator is disclosed that eliminates crossover distortion problem inherent in previous discriminator without a corresponding increase in complexity in the circuit. The discriminator includes four cross-cou...
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JPS6322549B2 |
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