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Patent Searching and Data


Matches 701 - 750 out of 1,841

Document Document Title
JP2004205244A
To implement a highly accurate electronic timepiece by correcting both rate changes to temperatures and rate changes to humidity variations due to weather transitions and the ambient environment of the timepiece.The electronic timepiece ...  
JP2004208270A
To operate a crystal oscillator with low power by making a temperature compensator for a digital crystal oscillator into one chip.A temperature offset code is subtracted from a present temperature, a memory address storing information re...  
JP2004201280A
To provide a voltage controlled oscillator capable of substituting for a crystal oscillator.The voltage controlled oscillator that is used as a frequency reference device in an electronic device such as a cellular phone and the other mob...  
JP3542886B2
To highly precisely compensate the temperature by inserting a crystal oscillator into one branch line of a CR circuit, using the circuit as a part of the feedback circuit of a high frequency amplifier circuit and oscillating the crystal ...  
JP2004172712A
To solve the problem in a conventional transmitter-receiver used in a base station that a local oscillation circuit is not stabilized because the output level of a frequency synthesizer changes due to frequency or temperature fluctuation...  
JP2004166076A
To perform correction with high accuracy by using a D/A converter with the number of bits low and suppressing quantization errors and to realize temperature correction at a low cost.An actual observation waveform of correction voltage re...  
JP2004516740A
An oscillation circuit (10) contains the crystal oscillator (12) for generating a clock signal (20). A clock signal is synchronized with a main signal (19) during the lock in period when an oscillation circuit (10) has access to a main s...  
JP2004514877A
The frequency error of an oscillator is minimized by characterizing the oscillator. A reference signal from an external source containing a minimal frequency error is provided to an electronic device. The external signal is used as a ref...  
JP2004146866A
To provide an oscillator circuit of a simple constitution, which can improve the temperature dependency of the oscillated frequency.Inverters 1, 2, 3 are connected in series, feedback is applied from the output terminal of the inverter 3...  
JP2004507916A
The clock generation machine for automatic check equipment generates a clock signal from a reference clock. In order to generate a desired clock signal, a clock generation machine generates the signal which has a cycle equal to the integ...  
JP2004072289A
To eliminate a temperature change of an oscillation frequency, to make consumption current in an oscillation circuit to be low and to prevent a frequency adjusting circuit from being easily affected by fluctuation of power voltage of the...  
JP2004048643A
To provide a temperature compensation piezoelectric oscillator by which an unconventionally large variable range can be obtained and high temperature stability can be obtained by an oscillator having two or more load capacity variable fu...  
JP2004048690A
To provide a ring oscillator wherein deterioration of oscillation frequency can be prevented when power source voltage drops, temperature rises and occupied area is small.The ring oscillator is provided with a ring oscillation part 1 con...  
JP2004048686A
To obtain a design means for preventing an electronic component or the like to be used for a high stability piezoelectric oscillator from being deteriorated by heat aging when the high temperature side of use temperatures is as high as 8...  
JP2004503977A
The present invention is a thing which creates exact Frequency Standard (5) in an integrated circuit and which carries out thing Seki by activity-izing a reference oscillator (6) at a specific interval, and carrying out the calibration o...  
JP3492225B2
To provide a transmitter-receiver capable of suppressing data errors under the environment of the severe mechanical impacts and vibration of an airplane. By setting the natural angular frequency and phase comparison frequency of a PLL fr...  
JP2004023634A
To provide a high frequency oscillation circuit that can be configured by employing a frequency synthesizer having a small change in the frequency due to a temperature variation at a low cost independently of a power supply voltage and t...  
JP3482711B2
PURPOSE: To apply temperature compensation to cancellation of spur in a phase locked loop. CONSTITUTION: A phase detector 110 receives a reference frequency and a feedback frequency from a reference divider 100 and provides the output of...  
JP3479475B2
To provide a voltage controlled crystal oscillator where a phase noise is reduced, a start characteristics is enhanced and miniaturization can be enhanced. In the voltage controlled crystal oscillator where a variable voltage capacitive ...  
JP3473400B2
To provide the oscillator which suppresses the influence of noise superposed on a source voltage and reduces temperature variation in oscillation frequency. A source follower circuit 40 which has a desired temperature gradient is actuali...  
JP3463499B2
To obtain a power-supply stabilization circuit which prevents a capacitor from being damaged any more even when the capacitor is damaged by a method wherein a fuse which is blown due to the generation of an overcurrent is installed in se...  
JP3458838B2
To provide a PLL circuit which detects the noise of an analog power supply and generates an alarm and which comprises the check means of the analog power supply capable of preliminarily preventing the problem that the phase of an output ...  
JP2003297935A
To provide a circuit having a variation correction function, which obtains an output close to a desired value by suppressing a variation in output characteristic, irrespective of characteristic variation of a constituent element in manuf...  
JP2003283304A
To provide an oscillation device which makes a circuit scale be small and keeps an oscillation frequency almost constant to a change in power supply voltage not requiring a necessity to have a large monopolized chip area therefore.The ci...  
JP2003279639A
To provide a software compensation type quartz oscillator.A navigation satellite receiver has a quartz oscillator depending on a local ambient temperature. A true frequency bias of the quartz oscillator is calculated locally using a rece...  
JP2003248044A
To provide a real-time clock for a GPS receiver.A navigation satellite receiver is provided with a real-time clock capable of serving as a slave with respect to a highly accurate time base of a GPS system. At this time, the amount of cor...  
JP2003524305A
(57) Summary book invention relates to the oscillator (20) for supplying periodic voltage (V) of predetermined frequency (f). A standard power supply (23) including the resistance (R) which the oscillator can offer reference voltage (Vre...  
JP2003218636A
To provide a temperature compensation type oscillator the adjustment steps of which can be simplified with high accuracy by operating an oscillation circuit so as to accurately adjust a temperature characteristic of a crystal chip itself...  
JP2003209443A
To provide an electronic apparatus equipped with a compensation device for compensating the effects of the variation of intrinsic capacitance of a transistor to be used for the electronic apparatus.The electronic apparatus is provided wi...  
JP3428785B2
To obtain a cellular cordless master machine which is capable of supplying stable service to a slave machine from the time when a power source is turned on. In the cellular cordless master machine providing a cellular cordless slave mach...  
JP2003204260A
To improve frequency stability and to output the clock signal of a fixed frequency over a wide temperature range in an oscillator using a SAW resonator.A control voltage corresponding to a phase difference between the output signal of a ...  
JP3426045B2
PURPOSE: To realize a temperature compensation synthesizer oscillator having plural oscillators with high frequency stability by compensating frequency fluctuation due to temperature fluctuation in plural oscillators at once. CONSTITUTIO...  
JP2003198254A
To downsize a dimension corresponding to the area of a crystal oscillation chip package without the need for further use of a printed-circuit board on which a part for a temperature compensated circuit is mounted, by allocating a space u...  
JP2003188717A
To provide an electronic clock equipped with an oscillation stop detecting circuit, which is operated with low power consumption, can shorten the detection time, improves stability relative to the temperature and reduces an area in the c...  
JP2003174324A
To provide a method of adjusting the output frequency in the condition of a finished product with a minimized space occupation by an output frequency adjusting resistor.A temperature compensated crystal oscillator is composed of a crysta...  
JP2003174325A
To provide a temperature-compensated crystal oscillator which reduces the height of a product.The temperature-compensated crystal oscillator 40 comprises a first substrate structure 41 composed of at least one substrate with a cavity for...  
JP3411120B2
PURPOSE: To make characteristics stable even if a power source or temperature varies by using the output signal of a 2nd PLL circuit, which includes the difference component between the frequency of a 2nd external signal and the internal...  
JP3405229B2
To provide an oscillator, a dielectric line device and a transmitter which are made to be free from such a problem as the size increase, mass- productivity deterioration, or cost rise resulting from the installation of a special temperat...  
JP2003124747A
To provide a temperature compensated crystal oscillator, in which frequency stability is satisfactorily maintained.In the temperature compensated crystal oscillator, in which an IC integrating an oscillation circuit at least is provided ...  
JP2003124803A
To reduce variation in the modulation frequency of a VCO accompanying temperature variation of a semiconductor integrated circuit for modulation used for a frequency hopping type radio communication system which uses an LC oscillation ty...  
JP2003124804A
To embody an oscillation circuit which can have its oscillation fre quency easily controlled, correct temperature characteristics of an oscillator, and generates an oscillation signal with a high temperature characteristic although a SAW...  
JP3399687B2
PURPOSE: To prevent the occurrence of adverse effect such as increase in phase noise, extended lock time, and deteriorated stability by preventing a natural frequency and a dumping constant from being fluctuated even when modulation sens...  
JP2003115720A
To provide a temperature-compensated oscillator, the adjusting method thereof, and a temperature-compensated oscillation integrated circuit wherein the increases of the area of its capacitor array and the bit numbers of its memory are su...  
JP3397193B2
To provide a clock generator that gives a sub system clock not affected by an AFC function in a multi-system that has a main system affected by the AFC function and the sub system receiving a system clock from the main system. The clock ...  
JP2003510879A
(57) Summary book invention relates to the equipment and the method of compensating temperature by asking for Katt Ingres of a master crystal (mc) and a slave crystal (sc) used with a master oscillator (m) and a slave oscillator (s). If ...  
JP2003078426A
To make an inexpensive crystal oscillation circuit with the accuracy of a frequency error inferior usable in a portable telephone terminal.When the power is supplied to this portable telephone terminal, the portable telephone terminal im...  
JP2003078351A
To provide a pseudo cubic function generating circuit with a simple circuit structure with which a large change in voltage can be directly obtained, less noise components are generated, cost is low, and a cubic function curve can be easi...  
JP2003509965A
(57) It is the local reference frequency synchronous method in a summary mobile station, and the present ambient conditions of a mobile station are measured and it includes determining the method by which local reference frequency synchr...  
JP2003069426A
To provide a frequency synthesizer with less frequency versus temperature fluctuations and excellent C/N with respect to a circuit for compensating an output signal frequency versus temperature fluctuations of the frequency synthesizer u...  
JP2003069422A
To provide a reference frequency generating apparatus with low power consumption that can generate a synchronizing signal with high accuracy and a reference frequency signal with high stability and reduce a time until the reference frequ...  

Matches 701 - 750 out of 1,841