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819results about How to "Large amplitude" patented technology
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Medical ultrasound system and handpiece and methods for making and tuning
InactiveUS20070232926A1Small sizeIncrease displacementUltrasonic/sonic/infrasonic diagnosticsSurgeryUltrasonographyUltrasonic sensor
Owner:CILAG GMBH INT
Medical ultrasound system and handpiece and methods for making and tuning
InactiveUS20070232928A1Small sizeIncrease displacementUltrasonic/sonic/infrasonic diagnosticsSurgeryUltrasonographyUltrasonic sensor
Several embodiments of medical ultrasound handpieces are described each including a medical ultrasound transducer assembly. An embodiment of a medical ultrasound system is described, wherein the medical ultrasound system includes a medical ultrasound handpiece having a medical ultrasound transducer assembly and includes an ultrasonically-vibratable medical-treatment instrument which is attachable to a distal end of the transducer assembly. An embodiment of a medical ultrasound system is described, wherein the medical ultrasound system has a handpiece including a medical ultrasound transducer assembly and including a housing or housing component surrounding the transducer assembly. A method for tuning a medical ultrasound handpiece includes machining at least a distal non-threaded portion of an instrument-attachment stud of the transducer assembly to match a measured fundamental frequency to a desired fundamental frequency to within a predetermined limit. A method for making a medical ultrasound transducer assembly determines acceptable gains for gain stages of the transducer assembly.
Owner:CILAG GMBH INT +1
Display device
InactiveUS7511709B2High implementation costReduced connection reliabilityTransistorSolid-state devicesDriver circuitShift register
Owner:SEMICON ENERGY LAB CO LTD
Composite sensor device and method of producing the same
InactiveUS7004025B2High detection sensitivityAvoid vibrationAcceleration measurement using interia forcesSpeed measurement using gyroscopic effectsAngular velocityAtmospheric pressure
A plane vibrator of an angular velocity sensor and a movable member of an acceleration sensor are provided in a spaced floating state on the same substrate. A lid is formed so as to cover and be spaced from the upper side of the plane vibrator and the movable member. A space defined by the substrate and the lid is sectioned into a angular velocity sensor space and an acceleration sensor space by use of a sectioning wall. The angular velocity sensor space is hermetically sealed to be in the vacuum state. The acceleration sensor space is hermetically sealed to be under atmospheric pressure. The plane vibrator is vibrated at a high frequency and a large amplitude so that the angular velocity detection sensitivity is enhanced. The movable member, even if vibration of the plane vibrator is transmitted thereto, is prevented from vibrating at a high frequency and a large amplitude, due to the damping effect of air. Thus, the acceleration detection sensitivity is enhanced.
Owner:MURATA MFG CO LTD
Pelagic free swimming aquatic vehicle
InactiveUS6138604AImprove mobilityEfficient propulsionPropulsive elements of non-rotary typeUnderwater vesselsFree swimmingAerospace engineering
A pelagic free swimming aquatic vehicle includes a rigid forebody having a predetermined volume; a watertight chamber in the forebody; and a flexible afterbody having a lesser volume than the forebody and including a maneuvering and propulsion propulsion structure and a drive system for driving the structure with a traveling sinusoidal wave motion.
Owner:CHARLES STARK DRAPER LABORATORY
Data transfer method and electronic device
ActiveUS20050219189A1Large amplitudeObtaining adequateCathode-ray tube indicatorsInput/output processes for data processingCMOSTiming margin
The present invention provides a liquid-crystal display device that is able to reduce EMI, current consumption, and so forth in an interchip transfer of display data, a timing signal, and so forth and to provide an appropriate timing margin. In an interchip transfer of display data, a timing signal, and so forth that uses a plurality of data drivers, a certain data driver is used as a data driver. When the data driver is used in a first stage, an internal receiver is made to function as an RSDS receiver by fixing the IFM terminal at the “H” level. The received RSDS signal constitutes a CMOS signal that has been divided into two by the receiver and is output by the transmitter. Here, a data inversion signal is generated and output by the transmitter. When the data driver is used in the second or subsequent stage, the internal receiver is made to function as a CMOS receiver by fixing the IFM terminal at the “L” level. The received CMOS signal is output after being subjected to inversion control by means of the data inversion signal by the receiver and transmitter.
Owner:AU OPTRONICS CORP
Reduction of motion artifacts in ultrasound imaging with a flexible ultrasound transducer
ActiveUS20120065507A1Reduction of motion artifactEasily accountUltrasonic/sonic/infrasonic diagnosticsWave based measurement systemsAcoustic radiation forceUltrasound image
Owner:SIEMENS MEDICAL SOLUTIONS USA INC
Piezoelectric vibrator
InactiveUS20050023937A1Improve seismic performanceImproved mountabilityPiezoelectric/electrostriction/magnetostriction machinesPiezoelectric/electrostrictive transducersEngineeringYoung's modulus
A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.
Owner:TAIYO YUDEN KK
Medical ultrasound system and handpiece and methods for making and tuning
ActiveUS20070232920A1Small sizeIncrease displacementUltrasonic/sonic/infrasonic diagnosticsSurgeryUltrasonographyUltrasonic sensor
Several embodiments of medical ultrasound handpieces are described each including a medical ultrasound transducer assembly. An embodiment of a medical ultrasound system is described, wherein the medical ultrasound system includes a medical ultrasound handpiece having a medical ultrasound transducer assembly and includes an ultrasonically-vibratable medical-treatment instrument which is attachable to a distal end of the transducer assembly. An embodiment of a medical ultrasound system is described, wherein the medical ultrasound system has a handpiece including a medical ultrasound transducer assembly and including a housing or housing component surrounding the transducer assembly. A method for tuning a medical ultrasound handpiece includes machining at least a distal non-threaded portion of an instrument-attachment stud of the transducer assembly to match a measured fundamental frequency to a desired fundamental frequency to within a predetermined limit. A method for making a medical ultrasound transducer assembly determines acceptable gains for gain stages of the transducer assembly.
Owner:CILAG GMBH INT
Medical ultrasound system and handpiece and methods for making and tuning
ActiveUS20070232927A1Small sizeIncrease displacementUltrasonic/sonic/infrasonic diagnosticsSurgeryUltrasonographyUltrasonic sensor
Owner:CILAG GMBH INT
Piezoelectric device for generating acoustic signal
InactiveUS20070057601A1Optimize assembly structureEasy to assemblePiezoelectric/electrostriction/magnetostriction machinesBone conduction transducer hearing devicesDrop impactPiezoelectric actuators
There is provided a piezoelectric device for generating an acoustic signal in which an expansion mechanism expands a disposition of a laminated piezoelectric actuator by the principle of leverage. The mass of a base member placed in the expansion mechanism is larger than the mass of a vibration output member. An overall device size is small. The piezoelectric device has a pressurization structure for reducing a tractive force acting on the laminated piezoelectric actuator which is generated by the amplification. This enables provision of a piezoelectric device for generating an acoustic signal that is a small size, highly resistant to dropping impact, and has god acoustic performance with less sound leakage.
Owner:TOKIN CORP
Methods and circuits for frequency modulation that reduce the spectral noise of switching regulators
ActiveUS20050243894A1Great flexibilityLarge amplitudeAc-dc conversionDc-dc conversionPhysicsPeak value
Owner:ANALOG DEVICES INT UNLTD
Disposable air bag for a blood pressure measuring device and a method of making the same
InactiveUS20100010357A1Low AV/AVRTDSBPLarge possible APP to ABAVEvaluation of blood vesselsCatheterMeasurement deviceAir volume
An disposable air bag for measuring blood pressure having a diaphragm and a nipple mounted therein, the diaphragm having a plurality of waves for allowing the diaphragm to expand easily out of the air bag and a clip for disconnecting and connecting the nipple to and from one end of an air hose the other end of which is connected to an electronic blood pressure measuring device.Also disclosed is a blood pressure measuring device having ABS storing means for storing the stretching characteristics of an air bag as a function of the air volume in the air bag, AABPOA calculating means for calculating the actual pressure on the artery, and systolic / diastolic algorithm calculating means for determining the systolic and diastolic blood pressures partially based on the AABPOA calculating means.
Owner:OSTROWIECKI MORRIS
Radio frequency filter using intermediate frequency impedance translation
The present invention is an RF filter that translates impedances of an IF circuit to create a filter with an RF center frequency having the high Q roll-off characteristics of an IF filter. The RF filter is self-aligned with the frequency of an RF local oscillator. The RF filter has an impedance divider, which is formed by coupling an RF impedance circuit to a translated IF impedance circuit. The translated IF impedance circuit includes an RF passive mixer and an IF impedance circuit. The mixer translates the impedance of the IF impedance circuit by mixing an RF input signal with an RF local oscillator signal, which determines the RF center frequency. Filtered RF signals may be provided by the impedance divider. Filtered IF signals may be provided by the IF impedance circuit. To effectively translate and preserve the IF impedance characteristics, the IF impedance circuit presents a high impedance at harmonics of the RF local oscillator signal.
Owner:HUAWEI TECH CO LTD
Motor driving apparatus, motor driving method and disk driving apparatus
InactiveUS20080018279A1Large amplitudeWide detection rangeMotor/generator/converter stoppersAC motor controlMotor driveCell controller
A motor driving apparatus includes a virtual difference voltage detecting unit operable to detect a difference voltage between a virtual neutral point of a resistor circuit connected in parallel to motor coils and a terminal of a motor coil in non-conduction state, a rotor position detecting unit operable to detect a position of the rotor based on the difference voltage, and a controller operable to control commutation of an inverter based on the rotor position. The motor driving apparatus has a searching start mode for detecting the rotor position and energizes the coils, and a back electromotive voltage feedback mode for controlling commutation based on the back electromotive voltage. In the searching start mode, a rotor position searching process and a rotation start torque applying process are alternately performed.
Owner:PANASONIC CORP
Method for measuring reflectance ratio of high reflected mirror
InactiveCN1963435ALarge amplitudeHigh precisionScattering properties measurementsTesting optical propertiesReflectivity measurementOptoelectronics
This invention discloses one high reflection rate lens measurement method, which comprises the following steps: a, two same concaved high reflected concaved surface form direct chamber and to send continuous laser into stable resonance chamber or co focus chamber and when light chamber output signal range value is larger then set valve value, it closes laser beam to get direct chamber annealing time by index annealing signal matching to get chamber reflection rate; b, keeping chamber length unchanged and adding high reflection lens to form fold chamber between two blocks and when the output signal range value is larger than valve value, it closes laser beam to get fold chamber annealing time to compute test lens reflection rate.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Method And Apparatus For Treating A Fungal Nail Infection With Shortwave And/Or Microwave Radiation
InactiveUS20080076958A1Effective conditioningIncrease concentrationElectrotherapySurgical instruments for heatingMedicineFungal nail infection
The present invention relates to methods and devices for treating hard biological tissue (in particular, keratin-rich hard tissues) with electromagnetic energy having a frequency of at least 0.5 MHZ (megahertz) and less than 10 GHZ (gigahertz) (for example, HF, RF or microwave energy), and particularly, to methods aid devices for treating infections, for example, fungal infections of the nail.
Owner:ALMA LASERS LTD
High power micro-speaker
InactiveUS20130156237A1Simple processImprove automationTransducer circuit dampingDeaf-aid setsEngineeringLoudspeaker
Disclosed is a high power micro-speaker having a damper plate. More particularly, disclosed is a high power micro-speaker in which a damper plate has an opening through which a voice coil can pass, and the voice coil having passed through the opening is attached to a lower surface of a vibrating plate that is located above the damper plate, which provides an increased vibrating region. As such, enhanced output power of the micro-speaker is accomplished by increasing a height of the voice coil, or a slimmer design of the micro-speaker is accomplished by reducing a height of a frame.
Owner:BUJEON
Accelerometer-based method for cardiac function and therapy assessment
InactiveUS20060095085A1Improve efficiencyLarge amplitudeInternal electrodesCatheterGraphicsCardiac feature
Owner:MARCUS FR I +1
Semiconductor Device and Electronic Device Including Semiconductor Device
ActiveUS20100246750A1Suppress characteristicImprove the shortageTransistorStatic indicating devicesDriver circuitEngineering
It is an object to suppress deterioration in characteristics of a transistor in a driver cricuit. A driver circuit includes a first transistor, a second transistor including a gate and one of a source and a drain to which a second signal is inputted, a third transistor whose gate is electrically connected to one of a source and a drain of the first transistor and which controls whether a voltage state of an output signal is set or not by being turned on / off, and a fourth transistor whose gate is electrically connected to the other of the source and the drain of the second transistor and which controls whether a voltage state of an output signal is set or not by being turned on / off.
Owner:SEMICON ENERGY LAB CO LTD
Apparatuses for cutting food products
ActiveUS20140007751A1Large amplitude cross-sectionMinimal through-crackingMetal working apparatusEngineeringMechanical engineering
Apparatuses for cutting food product are provided having a cutting head. The cutting head includes one or more knife assemblies. Each knife assembly includes a knife extending toward the food product and is adapter to secure the knife to the cutting head. The knife has a corrugated shape to produce a food product slice with generally parallel cuts wherein the food product slice has a periodic shape and a large-amplitude cross-section.
Owner:URSCHEL LAB +1
Nanovibration coating process for medical devices using multi vibration modes of a thin piezo element
InactiveUS20050268921A1Mass production be facilitateDecrease frictionUltrasonic/sonic/infrasonic diagnosticsPiezoelectric/electrostriction/magnetostriction machinesPiezoelectric resonatorsElectricity
Owner:ZUMERIS JONA +2
Bistable piezoelectric cantilever beam vibrator device
InactiveCN102064745ABroaden the resonance frequency bandEnhanced Vibration ResponsePiezoelectric/electrostriction/magnetostriction machinesElectricityElastic substrate
The invention discloses a bistable piezoelectric cantilever beam vibrator device, which consists of a pedestal, piezoelectric ceramic, an elastic substrate, an electrode, a mass block and a pair of permanent magnets, wherein the piezoelectric ceramic is adhered to the elastic substrate; the electrode is plated on the piezoelectric ceramic; the mass block and a first permanent magnet are fixed at the free end of the elastic substrate; a second permanent magnet is arranged at a position, corresponding to the first permanent magnet, on the pedestal; and the first and second permanent magnets arearranged in a way that the same polarities are opposite. In the device provided by the invention, a piezoelectric cantilever beam vibrator can form a nonlinear bistable system by utilizing a nonlinear repulsive force between the permanent magnets, and can produce stochastic resonance phenomena under certain conditions to remarkably improve piezoelectric vibration generation efficiency in a broadband low-frequency vibration environment; and the device is particularly suitable for highly-efficiently capturing broadband, low-frequency and low-amplitude vibration energy.
Owner:NAT UNIV OF DEFENSE TECH
Pixel circuit
InactiveUS20080048955A1Improve brightness uniformityTotal current dropElectrical apparatusStatic indicating devicesNegative feedbackControl signal
A pixel circuit is disposed where a scan line arranged in a row direction to supply a control signal and a data line arranged in a column direction to supply a video signal intersect each other. The pixel circuit includes: a sampling transistor; a drive transistor; a capacitor connected between the current path end of the sampling transistor and the gate of the drive transistor; and a light-emitting device connected to the current path end of the drive transistor. The pixel circuit connects the mobility with negative feedback during a mobility connection period.
Owner:SONY CORP
Power transmission belt and method
InactiveUS20030130077A1Undesirable vibrationEnhancing oneV-beltsRopes and cables for vehicles/pulleyFiberEngineering
A power transmission belt, and more particularly a toothed power transmission belt, comprising a longitudinally extending tensile member composed of one or more carbon fiber cords, wherein the belt exhibits belt growth of not more than 0.1% based on its original length after 48 hours under High Temperature Belt Growth Analysis performed at 100° C., a method for producing such belts exhibiting reduced belt growth, and a method for reducing the angular vibration of a camshaft in relation to a crankshaft in an internal combustion engine wherein the camshaft is driven by a timing belt.
Owner:THE GATES CORP
Angular rate sensor
InactiveCN101078736AReduce detection impactReduce noiseAcceleration measurement using interia forcesSpeed measurement using gyroscopic effectsRotational axisAngular rate sensor
Owner:HITACHI METALS LTD
Display device
InactiveUS20050012887A1High implementation costReduced connection reliabilityTransistorSolid-state devicesDriver circuitShift register
When semi-amorphous TFTs are used for forming a signal line driver circuit and a pixel, a large amplitude is required for driving the pixel, and a large power supply voltage is thus needed. On the other hand, when a shift register is made up of transistors having a single conductivity, a bootstrap circuit is required, and a voltage over a power supply is applied to a specific element. Therefore, not both the driving amplitude and the reliability can be achieved with a single power supply. According to the invention, a level shifter having a single conductivity is provided to solve such a problem.
Owner:SEMICON ENERGY LAB CO LTD
Data recording system with servo pattern having pseudo-random binary sequences
InactiveUS6967808B1Large amplitudeTrack finding/aligningRecord information storageHard disc driveAudio power amplifier
A data recording system, such as a magnetic recording hard disk drive, has a recording medium in which the data tracks have pseudo-random binary sequences for the servo information used to control the position of the recording head. A first pseudo-random binary sequence (PRBS) and a second PRBS identical to the first PRBS but shifted by a portion of the period of the first PRBS are located between the track boundaries in alternating tracks in a first region of the servo pattern and between the track centers in alternating tracks in a second region spaced along the track from said first region. A servo decoder has two correlators, one for each PRBS. Each correlator outputs a dipulse when its PRBS repeats. The difference in amplitude of the dipulses represents the head position signal. The dipulses also control the amplifier for the signal read back by the head and the timing of the track identification (TID) detector.
Owner:WESTERN DIGITAL TECH INC
Charging device
InactiveUS20080084184A1Reduce the impactTotal current dropCharge equalisation circuitElectric power transfer ac networkEngineeringCapacitor
A charging device has an electric accumulator (20) formed by a plurality of series-connected electric accumulator cells (E1, E2, . . . , En), one electrode of any one of the electric accumulator cells being used as a reference potential of the electric accumulator (20); at least one capacitor (C1) having one end fixed to the potential of one electrode of each of the electric accumulator cells (E1, E2, . . . , En) or fixed to the potential of the other electrode of any one of the electric accumulator cells (E1, E2, . . . , En) through a rectifying means (D11, D12); and a periodical power source (30) connected between the capacitor (C1) and the reference potential of the electric accumulator to generate repetitive signals.
Owner:HONDA MOTOR CO LTD
Digital amplifier
InactiveUS7268621B2Easy to operateLarge amplitudeGain controlArrangements responsive to excess currentVoltage amplitudeMOSFET
A threshold value adjustment circuit for adjusting a predetermined threshold value is provided in a stage followed by a protection circuit which starts protection operation when a load current flowing into an MOSFET exceeds the threshold value. A voltage proportional to a drain current and generated between the opposite ends of a current detection resistor Rd inserted between the high-side MOSFET and a positive power supply +V, and an output of an output voltage detection circuit for detecting the voltage amplitude of an analog signal from a low pass filter for modulating an output of a class D amplifier stage are inputted to the threshold value adjustment circuit. The threshold value adjustment circuit adjusts the threshold value in such a manner that a limit current of the MOSFET is set as the threshold value when the output voltage is large, and protection operation is started in response to a lower current than the limit current when the output voltage is small.
Owner:YAMAHA CORP
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