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7564326 Electronic apparatus and manufacturing method of the same  
An electronic apparatus comprises at least one quartz crystal oscillator comprised of a quartz crystal oscillating circuit having a quartz crystal resonator, an amplifier, at least one resistor,...
7557667 Angular rate sensor  
An angular rate sensor includes a tuning-fork oscillator, a support portion, an oscillation absorption portion and a mounting portion. The tuning-fork oscillator has a base and arm portions...
7545239 Serrated MEMS resonators  
One embodiment of the present invention sets forth a serrated tooth actuator for driving MEMS resonator structures. The actuator includes a fixed drive electrode having a serrated tooth surface...
7528682 Electronic apparatus having display portion and oscillator and manufacturing method of the same  
In an electronic apparatus comprising a digital display portion and first and second oscillators comprising first and second oscillating circuits, each of the first and second oscillating circuits...
7528533 Vibratory gyroscope  
A vibratory gyroscope including a vibrator ( 10 ) integrally having a plate-like body portion ( 11 ) spreading along a reference plane, three drive arms ( 12, 13, 14 ) extending in a first...
7521846 Piezoelectric resonator element and piezoelectric device  
A piezoelectric resonator element including: a base formed of a piezoelectric material and having a given length; a plurality of vibration arms extending from one part of the base; and a supporting...
7446620 Microelectromechanical oscillator having temperature measurement system, and method of operating same  
There are many inventions described and illustrated herein. In one aspect, the present inventions relate to a temperature measurement system comprising (1) a first microelectromechanical resonator...
7446619 Temperature measurement system having a plurality of microelectromechanical resonators and method of operating same  
There are many inventions described and illustrated herein. In one aspect, the present inventions relate to a temperature measurement system comprising (1) a first microelectromechanical resonator...
7417362 Frequency regulating method for tuning fork type vibrator and tuning fork type vibrator frequency-regulated by the method  
A piezoelectric element of a tuning fork resonator comprises a base portion and a plurality of leg portions. Drive electrodes are formed on top and bottom major surfaces and both side surfaces of...
7397172 Piezoelectric resonator element, piezoelectric device and gyro sensor  
A piezoelectric resonator element, comprises: a base made of a piezoelectric material; at least a pair of resonating arms provided in a unified manner with the base and extending in parallel with...
7394326 Quartz oscillator manufacturing method and quartz oscillator  
A method for manufacturing a quartz oscillator having a stable temperature drift characteristic attributed to the quartz oscillating piece and a quartz oscillator are disclosed. The method...
7369004 Microelectromechanical oscillator and method of operating same  
There are many inventions described and illustrated herein. In one aspect, the present inventions relate to a temperature measurement system comprising (1) a first microelectromechanical resonator...
7369003 Oscillator system having a plurality of microelectromechanical resonators and method of designing, controlling or operating the same  
There are many inventions described and illustrated herein. In one aspect, the present inventions relate to oscillator systems which employ a plurality of microelectromechanical resonating...
7211926 Temperature compensated oscillator including MEMS resonator for frequency control  
Disclosed is an oscillator that relies on redundancy of similar resonators integrated on chip in order to fulfill the requirement of one single quartz resonator. The immediate benefit of that...
7193354 Resonator, unit having resonator, oscillator having unit and electronic apparatus having oscillator  
An electronic apparatus comprises a display portion and a plurality of oscillators, one of which is a quartz crystal oscillator comprising: a quartz crystal oscillating circuit comprising; an...
7170218 Electronic apparatus with two quartz crystal oscillators utilizing different vibration modes  
The electronic apparatus comprises a display portion and a quartz crystal oscillator at least, and said electronic apparatus comprises at least two quartz crystal oscillators. Also, each of two...
7167061 Tuning fork shaped crystal oscillator and method of fabrication thereof  
The present invention provides a tuning fork shaped oscillator, an angular velocity sensor element, and an angular velocity sensor with improved breaking strength with respect to CI and drive...
7071794 Quartz crystal resonator, unit having resonator, oscillator having unit, electronic apparatus having oscillator, and method for manufacturing electronic apparatus  
A quartz crystal resonator has a quartz crystal tuning fork base and quartz crystal tuning fork tines connected to the quartz crystal tuning fork base. Each of the quartz crystal tuning fork tines...
7053725 4X crystal frequency multiplier with op amp buffer between 2X multiplier stages  
A frequency-multiplying circuit generates a multiple of the fundamental frequency of a crystal that oscillates. A first differential multiplier is coupled to the crystal nodes and generates a...
6956417 Leakage compensation circuit  
A circuit, including: a capacitor coupled between a first circuit node and a second circuit node and that leaks a leakage current from the first circuit node to the second circuit node; and a...
6897737 Vibrating reed, vibrator, oscillator, and electronic device  
A vibrating reed which includes a base; and a vibration arm section formed so as to protrude from this base wherein a through groove is formed in the vibration arm section, and a rigidity...
6871572 Drive for precision oscillations  
A drive device for generating oscillations, especially for the blade of a microtome, with a power generator and a power transmission element, which with the power generator is movable in a...
6861914 Monolithic vibration isolation and an ultra-high Q mechanical resonator  
A mechanical oscillator is provided for use in micro-electromechanical systems (MEMS) for application in radio frequency filters and oscillators, motion and pressure sensors and other micro...
6799461 Tuning fork vibrator, vibrating gyroscope using the same, electronic apparatus using the same, and manufacturing method of the same  
A tuning fork vibrator includes a long plate-shaped vibration unit having a first principal surface and a second principal surface, a base disposed at one end of the second principal surface of the...
6750728 Quartz oscillator and method for manufacturing the same  
A quartz oscillator includes a base, a quartz thin-film formed on the base by epitaxial growth, a vibrating reed portion formed by processing the quartz thin-film, and excitation electrodes for...
6703674 Electrical device  
A clock signal generator in an integrated circuit semiconductor device and a method of generating a clock signal, the clock signal generator comprising: a semiconductor substrate ( 2 ); an...
6585338 Quick start resonant circuit control  
A circuit and method for assuring rapid initiation of resonant oscillation of an electromechanically oscillatory system driven by phase lock loop circuits. An open loop starting signal commences...
6441691 PLL cycle slip compensation  
Phase-reset circuits provide first and second frequency-divided input signals to a phase/frequency detector (PFD) used in a phase-locked loop (PLL). The phase-reset circuits receive first and...
6297708 Temperature compensated high performance oscillator  
The oscillator of the present invention generally comprises a resonating device that is directly coupled to ground and a circuit portion. The circuit portion is operably coupled to the resonating...
6134964 Mechanical resonator having a variable resonance frequency  
A mechanical resonator has an electronically adjustable resonance frequency and is especially adapted to be used as a tunable vibration absorber. The mechanical resonator includes an inertial mass...
5966053 Apparatus and method for controlling a mechanical oscillator  
An improvement to a phase controlled mechanical oscillator consists of a balancing network which generates a feedback signal from two different input signals with adjustable weights. One of these...
5783973 Temperature insensitive silicon oscillator and precision voltage reference formed therefrom  
Micromachined, thermally insensitive silicon resonators are provided having accuracy equivalent or superior to that of quartz resonators, and are fabricated from a micromechanical, silicon-on-glass...
5550516 Integrated resonant microbeam sensor and transistor oscillator  
At least one microbeam situated on a substrate, having a resonant frequency dependent on the strain on the microbeam which may be affected by the bending of the substrate. The beam or beams have...
5434547 Tuning fork type piezoelectric resonator having steps formed in arms of the tuning fork  
A tuning fork type piezoelectric resonator constructed by forming tuning fork arm portions on both sides of a first slit provided for a piezoelectric substrate, forming resonance electrodes on both...
5420548 Quartz crystal oscillator angular velocity detector circuits  
An angular velocity detector circuit composed of: an oscillator circuit including an inverting amplifier connected between a driving electrode of a quartz crystal and an electrode for detecting an...
5417115 Dielectrically isolated resonant microsensors  
A resonant strain gauge includes a silicon substrate, a polysilicon flexure beam fixed at both ends relative to the substrate, and a polysilicon rigid cover cooperating with the substrate to...
5275055 Resonant gauge with microbeam driven in constant electric field  
A resonant strain gauge includes a silicon substrate, a polysilicon flexure beam attached at both ends to the substrate, and a polysilicon rigid cover cooperating with the substrate to enclose the...
5243292 Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof  
An electrostatic measuring apparatus for measuring unknowns such as the electrostatic potential of a surface in a non-contacting manner, including a tuning fork and a sensing electrode, and in...
5156460 Crystal temperature transducer  
A vibrating crystal transducer for measuring temperature is disclosed. The crystal includes a single elongated vibrating beam that has a torsional mode resonant frequency that is a function of the...
5122764 Circuit for exciting a resonator  
To excite a resonator so that it oscillates at its resonant frequency, a self-oscillating system is used having a digital delay element (such as a digital memory) or an analog delay element (such...
5090254 Polysilicon resonating beam transducers  
Force transducers are formed of a beam of polysilicon which is mounted at its ends to a silicon substrate and is encapsulated within a polysilicon shell which defines, with the substrate, a cavity...
4926143 Oscillator using H-shaped single crystal silicon vibrator  
A vibrating type transducer wherein an H-shaped vibrator, formed integrally with a silicon substrate and having a hollow chamber provided therearound, is kept self oscillating at its natural...
4752129 Wavelength modulation derivative spectrometer  
Light to be measured is input to a diffraction grating after is has been oscillated by a wavelength modulation device with a constant frequency F. The light is incident to the diffraction grating...
4730478 Gas analyzer  
Apparatus for determining the proportion of a given gas component in a gas mixture, comprising a piezoelectric crystal provided with a surface layer containing a substance capable of selectively...
4721925 Micromechanical electronic oscillator  
A microminiature oscillator that uses the movement of a mechanical structure placed on an etched silicon chip to control the frequency of a pulse used as a time base in electronic applications.
4706046 Resonator made of nonpiezoelectric material with high quality coefficient  
The resonator (10) includes a monocrystal (11) of a nonpiezoelectric matel with low attenuation of elastic bulk waves, such as corundum, means of supporting the monocrystal fastened to the...
4654663 Angular rate sensor system  
An angular rate sensor system is disclosed, consisting of a balanced resonant sensor. The sensor consists of a tuning fork of a piezoelectric material, preferably of quartz. The tines of the tuning...
4588969 Adjustable crystal oscillator with acceleration compensation  
A variable oscillator is disclosed which is adjustable by a user to a desired frequency. A variable reactance element is inserted in series with a crystal resonator, the variable reactance element...
4577164 Drive regulator utilizing variable pulse width signal  
There is disclosed a drive regulation and control circuit for a tuning fork resonator also adaptable to other electrical devices wherein an approximately sine wave signal from a motion sensor is...
4567451 Resonator having optical feedback coupling  
A resonator device comprises an elastic beam driven electrostatically at its natural frequency, or an harmonic thereof, by voltage pulses applied to an integral paddle member. The voltage pulses...
Matches 1 - 50 out of 188 1 2 3 4 >