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JPH0820473B2 |
An apparatus which successively converts the period defined by successive two pulses of a series of input pulses into a voltage, and in which fractional times between input pulses an clock pulses are converted, by two fractional time-to-...
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JPH08500942A |
(57) [Summary] Digital demodulators for modulated frequencies, modulated pulse widths, and other temporarily modulated signals use a label detector (14) to determine zero intersections of the modulated signal. The period between zero cro...
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JPH07326930A |
PURPOSE: To provide modulation output convenient for a digital processing by defining pulse density modulation signals as demodulation output from frequency modulated input signals. CONSTITUTION: FM signals are inputted to one of the ter...
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JPH07326951A |
PURPOSE: To suppress lower and upper side bands by utilizing not an IF or RF remaining side band filter but a base band, i.e., reference band, filter system in a remaining side band/pulse amplitude modulation demodulator. CONSTITUTION: T...
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JPH07303388A |
PURPOSE: To provide an operating performance-enhanced and simple-structured signal generating circuit by which an analog signal of a large number of steps can be generated from a pulse width modulation signal of a small number of steps. ...
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JPH07288453A |
PURPOSE: To provide an optimum transmission optical signal by generating a variable electronic driving signal for an optical element and compensating mismatching in the turn-on/turn-off characteristics of the optical element. CONSTITUTIO...
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JPH0797740B2 |
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JPH0782022B2 |
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JPH0783386B2 |
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JPH0773215B2 |
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JPH0760979B2 |
An isolation amplifier includes a voltage-to-duty-cycle modulator, a non-galvanic isolation barrier, and a demodulator converting a duty-cycle-modulated signal transmitted across the isolation barrier to an analog voltage replica of the ...
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JPH0722291B2 |
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JPH0755823A |
PURPOSE: To allow enlargement of dynamic range while keeping constant the inclination of frequency/voltage conversion curve F/V under limitation of power supply voltage by providing means for regulating the pulse voltage thereby making t...
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JPH077348A |
PURPOSE: To obtain a DC control voltage signal stable to the fluctuation of a power supply voltage by DC-converting and outputting a differential portion of a DC-converted pulse signal and the power supply voltage subjected to prescribed...
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JPH06105852B2 |
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JPH0692989B2 |
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JPH0681054B2 |
In a circuit utilizing a digital to analog converter, an amplifier receives two voltage levels of a digitally modulated input signal via two different switching circuits. Linearity of output signals provided by the amplifier is significa...
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JPH0638516Y2 |
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JPH0666667B2 |
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JPH0664093B2 |
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JPH06232711A |
PURPOSE: To obtain a correctly averaged output signal even when a burst wave is received by connecting an averaging circuit averaging a maximum value and a minimum value of an output ripple of a frequency/voltage (F/V) converter to the F...
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JPH0658614U |
A circuit for detecting a Frequency Modulated (FM) signal is provided. An amplitude limited FM signal is propated through a delay circuit comprising a plurality of cascaded saturating inverters. A Boolean logic "Exclusive Or" (XOR) opera...
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JPH06216778A |
PURPOSE: To define demodulated data even when reception data is delayed by comparing time width measured in first and second level intervals with a reference time, and adjusting the sampling timing of transfer data corresponding to a res...
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JPH06204829A |
PURPOSE: To provide a demodulation circuit for pulse-width modulated signal, which can demodulate PWM signals into analog signals having a slope characteristic such that it is suitable for the control characteristic of an object to be co...
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JPH06177724A |
PURPOSE: To prevent generation of a whisker-like signal in an output signal due to malfunction of the detection circuit in an infrared ray receiver. CONSTITUTION: In a detection circuit where a smoothing capacitor 4 and the input of a hy...
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JPH0644696B2 |
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JPH06104710A |
PURPOSE: To convert the frequency of a wide range into a voltage with high stability and high accuracy by adding the correction data given from a memory to the signal obtained by converting the calculated input frequency into the voltage...
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JPH05336184A |
PURPOSE: To provide the demodulator used for the digital carrier transmission system employing phase modulation in which clock phase is controlled independently at every channel so as to hold the identification timing of a regenerative s...
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JPH05315910A |
PURPOSE: To make it possible to judge a duty ratio even when the period of an input signal is suddenly changed by controlling the operation of an up/down counter in accordance with the combination logic of an input signal and a pulse wid...
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JPH05266601A |
PURPOSE:To make it possible to demodulate even an input PWM signal having very low transmission rate by a constitution wherein an envelope component is removed from an intagrated output which is then subjected to shaping through a compar...
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JPH0572144B2 |
To decode a binary signal without regard to the speed at which it is read, each transition in the binary signal is detected, and the time lapse between successive transitions is detemined to thereby establish the length of a pulse in the...
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JPH0559970U |
[Purpose] The purpose is to realize a versatile signal processing circuit by combining the function of F / V conversion, the function of V / F conversion, and the function of multiplying the input pulse with one card. .. [Constitution] I...
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JPH05183409A |
PURPOSE: To improve the responsiveness at the time of changing a duty ratio without losing the stability in a steady-state when a duty signal is converted into a voltage corresponding to the duty. CONSTITUTION: When an input duty signal ...
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JPH0555626U |
[Purpose] A simple and compact detection circuit for detecting whether or not the input duty signal is equal to or higher than a predetermined duty is formed. [Constitution] The capacitor 43 of the conversion circuit 32 is charged during...
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JPH0548861B2 |
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JPH0552774U |
[Purpose] When the frequency of the input frequency signal becomes "0Hz", the value of the output signal is set to zero, and even when the frequency of the frequency signal is low, the ripple in the output signal is reduced to improve th...
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JPH05136668A |
PURPOSE: To improve the reliability by applying current/voltage conversion to a current signal outputted from positive and negative differentiation sections so as to generate an output signal of a voltage corresponding to a frequency. CO...
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JPH0521026Y2 |
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JPH0535601B2 |
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JPH0575411A |
PURPOSE: To generate such a voltage signal that the integration of the current is proportional by providing an integral amplifier having an integral capacitor and including a switch circuit in the current pulse integrator. CONSTITUTION: ...
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JPH057779Y2 |
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JPH0510031B2 |
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JPH0529899A |
PURPOSE: To realize the signal converter converting a signal corresponding to a phase error of a wide range with high accuracy in a conversion means implementing time/voltage conversion to a pulse phase in a timing different from that of...
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JPH0448493Y2 |
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JPH04321313A |
PURPOSE: To implement a bipolar operation and to give symmetry to an operating waveform by providing an additive integration device and a sample-and-hold amplifier circuit to the demodulator. CONSTITUTION: An output of a critical type pu...
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JPH04307810A |
PURPOSE: To prevent fidelity of a reproduction signal from being lost due to a change in a tape speed by obtaining an analog signal in response to a modulation signal based on a ratio of a pulse width of a carrier signal and a basic peri...
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JPH04263511A |
PURPOSE: To improve a frequency/voltage converting characteristic by improving accuracy for the constant current of a saw-tooth-wave generation circuit. CONSTITUTION: A hold voltage (signal line 207) after frequency/voltage conversion is...
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JPH0492816U |
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JPH04217001A |
PURPOSE:To enable a duty/voltage conversion circuit to normally perform conversion even when power supply is made to the circuit by converting a duty into a voltage on the basis of the number of clocks outputted during the period in whic...
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JPH0427218Y2 |
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