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WO/1989/012932A1 |
The speed of the disc drive of a CD-player is regulated by means of a phase-control circuit, which is set manually during production. In order to avoid tiresome manual setting during production as well as speed fluctuations, resulting in...
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WO/1989/012929A1 |
The invention concerns an oscillator which is ultrastable in frequency and operates at atmospheric pressure and in vacuo. It comprises a piezoelectric resonator (1) consisting of a piezoelectric blade (2) potted in a casing consisting of...
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WO/1989/011756A1 |
There is provided a system for automatically integrally calibrating an oscillator (10) and/or a phase-locked loop (30, 32, 34) to achieve frequency accuracy and stability in a synthesized radio, particularly a radio where the temperature...
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WO/1988/001810A1 |
A crystal oscillator compensation circuit (13) has an oscillator crystal (12) excited by a piezoelectric oscillator circuit (19), whereby the frequency (f) can be shifted in certain limits by means of a variable-capacity diode (14). The ...
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WO/1987/000706A1 |
A local oscillator used for communication equipment or a double superheterodyne tuner. The local oscillator comprises a coaxial resonator (1), an amplifier circuit (26) of which the output terminal is connected to a central conductor of ...
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WO/1984/001243A1 |
A bias network (44) having at least two or more selectable bias levels is used to drive a negative conductance semiconductor device (18) in a pulse mode. When a first bias level is selected (40), the semiconductor device (18) dissipates ...
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WO/1982/004318A1 |
A compensated measurement system utilizing dual sensing elements (10, 12) and a single variable frequency oscillator (14). A common operative association between the sensing elements (10, 12) and the oscillator (14) is achieved by multip...
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WO/1981/001888A1 |
A linearizing circuit which includes a frequency mixer circuit for mixing at a prescribed ratio, a first frequency varying in response to the variation of a parameter with a second frequency from a reference oscillation source which is i...
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JP2024050782A |
A system and method for compensating for mechanical acceleration in a reference oscillator. In a communication system 100, a reference oscillator 102 generates an oscillator output signal 103, and an accelerometer 104 on the same platfor...
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JP2024024522A |
The present invention is capable of changing the oscillation frequency with good followability even when the resonant frequency changes over time due to changes in environmental conditions such as temperature. A phase-locked circuit reso...
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JP2024017214A |
The present invention provides a circuit device, etc. that can realize appropriate temperature compensation according to the state of an output circuit. A circuit device 20 includes a clock signal generation circuit 28 that generates a c...
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JP7427600B2 |
An oscillator circuit includes a current source, an oscillating section, a first capacitor, and a setting section. The current source is coupled to a connection node and causes a current having a current value based on an input voltage t...
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JP2023155463A |
To provide an oscillator, etc., that can reduce micro-jumps in frequency caused by fluctuations in temperature measurement results and achieve higher precision in clock frequency.An oscillator 4 includes a vibrator 10, a first circuit de...
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JP7350512B2 |
A variable-frequency oscillator generates an oscillator clock having a frequency that corresponds to a control signal. A programmable frequency divider divides the oscillator clock, so as to generate a divided clock. A F/V converter circ...
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JP7346843B2 |
Provided is an oscillator including: a resonator; a first circuit device electrically coupled to the resonator; and a second circuit device. The first circuit device generates a first clock signal by causing the resonator to oscillate, a...
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JP2023096335A |
To provide an oscillator achieving an improvement in frequency-temperature characteristics and a reduction in noise.An oscillator 4 includes: a resonator 10; an oscillation circuit 30 configured to oscillate the resonator 10; a first tem...
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JP2022160722A |
To provide a phase-locked-loop capable of stabilizing an oscillation frequency even when the ambient temperature changes.In a phase-locked loop 11, a voltage-controlled oscillator 23 generates an output signal CLKout of a frequency accor...
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JP7117119B2 |
In an oscillator device that outputs a frequency signal based on an oscillation frequency of a crystal resonator and a frequency setting value, a frequency difference detector that obtains a difference value corresponding to a frequency ...
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JP2022116549A |
To provide a circuit device and the like capable of improving linearity of a capacitance value of a variable capacitance circuit for controlling an oscillation frequency.A circuit device 20 includes a processing circuit 60 that generates...
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JP7005573B2 |
Described embodiments include a system, including clocked circuitry, an oscillator controller, and an oscillator, configured to output an output clock signal that clocks the clocked circuitry and is fed to the oscillator controller. The ...
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JP6996953B2 |
An oscillator control circuit includes a zero-temperature coefficient (ZTC) estimator estimating a ZTC voltage based on a supply voltage supplied to the oscillator and a frequency of an oscillation signal output by the oscillator. The ZT...
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JP6980397B2 |
A method of compensating for the temperature related frequency drift of an oscillator. The method comprises using an external reference frequency signal to derive oscillator compensation data over a range of operating temperatures, stori...
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JP2021190779A |
To provide a PLL circuit capable of being compactly mounted on a solid-state image pickup device.A PLL circuit comprises an oscillation circuit operating using power supplies of semiconductor chips constituting a solid-state image pickup...
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JP2021136647A |
To provide a measurement device capable of reducing noise in a signal generated and outputted by the measurement device based on a clock signal inputted from external.A measurement device 1 includes an external input terminal 11, an osci...
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JP2021048460A |
To provide a circuit arrangement that can prevent the occurrence of a data transfer error due to instability of power supply voltage caused by an increase in current consumption in a heater.A circuit arrangement 20 includes: an oscillati...
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JP6766427B2 |
A circuit device includes a phase comparator that performs phase comparison between an input signal based on an oscillation signal and a reference signal, a processor that performs a signal process, and an oscillation signal generation c...
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JP2020162054A |
To provide an atomic oscillator and a frequency signal generation system having high frequency-stability.The atomic oscillator includes: an atomic cell having a first portion and a second portion at a different position from the first po...
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JP2020145528A |
To provide an oscillator and the like that can achieve accurate temperature compensation processing using a learned model.An oscillator 4 comprises: a first vibrator 10 and a second vibrator 11; a first oscillation circuit 20 that genera...
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JP2020145529A |
To provide an oscillator and the like that can measure a temperature in a short time to achieve accurate temperature compensation processing.An oscillator 4 comprises: a first vibrator 10; a second vibrator 11; a first oscillation circui...
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JP6753068B2 |
To provide a timing signal generation device capable of reducing power consumption, and to provide an electronic apparatus and a mobile including such a timing signal generation device.A timing signal generation device includes a first r...
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JP6750320B2 |
A temperature compensated oscillation circuit includes an oscillation circuit that oscillates a resonator, a fractional N-PLL circuit that multiplies frequency of an oscillation signal which is output by the oscillation circuit, on the b...
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JP2020137023A |
To provide an oscillator capable of outputting a highly accurate frequency signal, electronic equipment and a mobile object each comprising the oscillators.The oscillator comprises: a first container that includes a first base substrate ...
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JP6728652B2 |
A circuit device includes an A/D conversion section adapted to output temperature detection data, a temperature compensation section adapted to perform a temperature compensation process of the oscillation frequency based on the temperat...
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JP6720532B2 |
A circuit device includes a processor adapted to perform a signal processing of temperature compensation of an oscillation frequency based on temperature detection data from an external temperature sensor disposed outside the circuit dev...
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JP6710914B2 |
An electronic device includes a drive section, a detection signal output section adapted to generate a first analog signal having a value varying in accordance with a physical quantity, and a control section adapted to generate a second ...
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JP6703414B2 |
To provide a configuration which allows for easy implementation of modern control, while preventing mixture of noise, in a control section for controlling the temperature of an oscillator with a constant temperature oven.An oscillator 23...
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JP6686329B2 |
An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element, a capacitance circuit connected to the oscillating circuit, and capable of correcting an oscillation frequency of the oscillating circuit, a...
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JP6623616B2 |
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JP6576693B2 |
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JP6570915B2 |
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JP6567403B2 |
In the frequency calibration circuit, the digital phase-locked-loop circuit repeats a calibration operation involving outputting the digital control signal corresponding to a time difference between the first clock signal which is input ...
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JP6564250B2 |
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JP6561568B2 |
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JP6534200B2 |
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JP6504561B2 |
To provide a digital temperature/voltage compensated oscillator capable of compensating only for a change of an environmental temperature but also for a change of a power supply voltage with high accuracy.SOLUTION FOR THE PROBLEM: A digi...
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JP6460458B2 |
To provide a temperature-compensated oscillator which has a temperature sensor capable of highly accurate temperature measurement and realizes higher frequency stability by compensation voltage based on measured temperature information.A...
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JP2018137512A |
To provide a circuit device capable of performing temperature compensation with high accuracy while suppressing an increase in necessary data amount.A circuit device includes an oscillation circuit, a temperature detection circuit, and a...
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JP6376330B2 |
An electronic component includes a pedestal plate that has a first surface made of a metal and a second surface being an opposite surface to the first surface, a heating element arranged on the first surface of the pedestal plate, and a ...
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JP6308796B2 |
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JP6276700B2 |
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