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| Number | Title | Issue Date |
| 8089197 | Method for operating a piezoelectric element A method for operating a piezoelectric element is disclosed. A first voltage is applied to a piezoelectric element and produces a first deflection of the piezoelectric element with a travel. An electrical discharge of the piezoelectric element after the application ... | 01/03/2012 |
| 8080917 | Driving apparatus, holding apparatus, exposure apparatus, and device fabrication method A driving apparatus, which drives an object, includes a plurality of piezoelectric elements configured to drive a plurality of portions of the object, a plurality of voltage apply units configured to apply voltages to the plurality of piezoelectric elements, and a c... | 12/20/2011 |
| 8076822 | Piezoelectric element drive device, electronic apparatus, and method for controlling piezoelectric element drive frequency A drive device for a piezoelectric element includes a transformer, a driver circuit, and a control circuit. The transformer has a primary side and a secondary side. The drive circuit causes the secondary side to generate a drive signal whose frequency varies in acco... | 12/13/2011 |
| 8058771 | Ultrasonic device for cutting and coagulating with stepped output Various embodiments are directed to an apparatus, system, and method for driving an end effector coupled to an ultrasonic transducer in a surgical instrument. The method comprises generating a first ultrasonic drive signal by a generator coupled to an ultrasonic dri... | 11/15/2011 |
| 8058770 | Image stabilization control circuit, imaging device, and piezoelectric actuator drive circuit In a drive circuit for a piezoelectric actuator, it is possible to move a movement object to a target position rapidly and with good precision. Parameters for two types of drive pulses (PL1, PL2) having different duty ratios are stored in a register ( | 11/15/2011 |
| 8053949 | Electronic control device for a piezo-ceramic bending transducer designed as a trimorph An electronic control device for a piezo-ceramic bending transducer designed as a trimorph, wherein a first voltage divider consisting of two resistor branches and powered by a first voltage source (Ust1) is provided, whose first resistor branch connects ... | 11/08/2011 |
| 8040017 | Piezoelectric actuator A piezo actuator includes an adaptation element, which is configured to adapt the piezo actuator to a controller for inductive loads, particularly to a converter for actuating inductive loads. The adaptation element allows use of controllers or converters of numeric... | 10/18/2011 |
| 8030822 | Ultrasonic probe and ultrasonic diagnostic apparatus An ultrasonic probe includes ultrasonic oscillators each having first and second electrodes, a first transmitting circuit that is connected to the first electrode to transmit an electrical signal to the ultrasonic oscillator, and a second transmitting circuit that i... | 10/04/2011 |
| 8018123 | Ultrasonic actuator An ultrasonic actuator (2) includes an actuator body (3) generating a driving force, a case (4) containing the actuator body (3), and support rubbers (51) placed between the actuator body (3) and the case (4) to elast... | 09/13/2011 |
| 7999438 | Piezoelectric-drive apparatus, method of controlling piezoelectric-drive and electronic device A piezoelectric driving device including a laminated body having a base that is capable of being deformed by applying force, a first piezoelectric body that is formed on a first face of the base directly or via another layer, and a second piezoelectric body that is ... | 08/16/2011 |
| 7994687 | Piezoelectric actuator and method for driving the same The piezoelectric actuator includes a piezoelectric element structure (100) which has at least one piezoelectric element (120), and a working edge (130) for directing driving force on a driven body (MB), wherein the working edge (130) osc... | 08/09/2011 |
| 7977849 | Droplet spray generation device An electronic drive system for a droplet spray generation device has a droplet generator with a perforate membrane driven by a piezoelectric transducer. An electronic circuit controls a power supply to control the charging of a capacitor to supply a drive signal to ... | 07/12/2011 |
| 7975315 | Atomic force microscope There is provided an atomic force microscope (AFM) with increase the speed and sensitivity of detection of the resonant frequency shift in a cantilever. An AFM (1) extracts a reference signal and a phase shift signal from a detection signal from a displacemen... | 07/05/2011 |
| 7969064 | Piezoelectric devices and methods and circuits for driving same A drive circuit (18) produces a drive signal for a pump (10) having a piezoelectric actuator (14), with the piezoelectric actuator (14) forming a part of the drive circuit (18) and serving to shape a waveform of the drive signal. T... | 06/28/2011 |
| 7960895 | Drive unit A vibratory actuator includes a piezoelectric element, a driver element provided on the piezoelectric element and a movable body supported by the driver element. A control unit supplies a first voltage and a second voltage at the same frequency to the piezoelectric ... | 06/14/2011 |
| 7960894 | Generator for exciting piezoelectric transducer A generator for exciting a piezoelectric transducer, includes at least one digital processor unit. The digital processor unit is configured to operate at least in an iterative operation stage including more than two successive iterations. Each iteration includes: ex... | 06/14/2011 |
| 7956513 | Method of driving a driving device A driving device includes an electro-mechanical transducer having first and second end portions opposite to each other in an expansion/contraction direction, a stationary member coupled to the first end portion of the electro-mechanical transducer, a vibration frict... | 06/07/2011 |
| 7944117 | Device and method for driving an ultrasound piezoelectric actuator A device for driving ultrasound piezoelectric actuators, on the basis of a DC voltage. The device includes an impedance matching branch mounted in parallel with the actuators and including a capacitor in series with a selection switch, which is closed and opened, at... | 05/17/2011 |
| 7944116 | Drive circuit A drive circuit for a high-frequency agitation source includes a signal generator generating a train of low voltage square-wave pulses at a drive frequency, a booster including a boost inductor generating a back EMF and configured to produce a high-voltage pulse tra... | 05/17/2011 |
| 7923897 | Sonic fine-hole forming apparatus Disclosed is a sonic fine-hole forming apparatus for forming a fine-hole in a surface of a membrane or solid body in a liquid by means of sonic energy. The sonic fine-hole forming apparatus is adapted to generate a sonic oscillation driving signal comprises a voltag... | 04/12/2011 |
| 7902719 | Apparatus and method for affecting physical parameter associated with a shaft An apparatus for affecting at least one physical parameter associated with a shaft oriented about a longitudinal axis includes: a piezoelectric tubular member in a substantially osculatory coaxial relation with at least a portion of the shaft; and at least one elect... | 03/08/2011 |
| 7902720 | High-voltage driver and piezoelectric pump with built-in driver A digital waveform generating circuit having a DC voltage as an input and generating a sinusoidal digital signal, an active filter extracting low-frequency components from the sinusoidal digital signal generated in the digital waveform generating circuit, and a high... | 03/08/2011 |
| 7898148 | Oscillator based on piezoresistive resonators An oscillator circuit is described comprising a piezoresistive resonator and a phase changing devices. Oscillator circuits with piezoresistive resonators do have the advantage that they can perform self-sustaining oscillation without additional active devices as e.g... | 03/01/2011 |
| 7898147 | Wireless actuator interface An actuator includes a mechanical transducer component capable of applying a mechanical force to an external object in response to electronic signals. The actuator includes a communications interface capable of wirelessly receiving configuration data related to oper... | 03/01/2011 |
| 7851969 | Piezoelectric-actuator driving device and exposure apparatus including the same A driving device includes a plurality of laminated units formed by alternately stacking piezoelectric element layers and electrode layers, a failure detecting unit configured to detect failure of the laminated units, a plurality of switches provided corresponding to... | 12/14/2010 |
| 7839051 | Protection device In an embodiment, a device is provided comprising an accelerometer and an electroactive material. A control circuit is coupled between the accelerometer and the electroactive material. ... | 11/23/2010 |
| 7834515 | Drive apparatus A drive apparatus includes an ultrasonic motor that rotates by an electromechanical transducer element, and generates an intermittent signal that outputs an alternating signal without change only during ON times of a pulse signal as a driving signal for the ultrason... | 11/16/2010 |
| 7825564 | Controller for a high frequency agitation source A controller for a high-frequency agitation source includes a signal generator to generate a drive signal having a variable duty cycle. The drive signal is used to drive the high-frequency agitation source. The controller also includes a temperature detector to dete... | 11/02/2010 |
| 7825565 | Driving apparatus A driving apparatus (100u) is provided with: a first base portion (110-1); a first stage portion (130-1); a first elastic portion (120-1) which has elasticity to displace the first stage portion in one directio... | 11/02/2010 |
| 7812504 | Apparatus for high efficiency, high safety ultrasound power delivery with digital efficiency indicator and one clock cycle shutdown The invention in general relates to Medical Instruments for bone fracture healing, ultrasonic surgery, tissue ablation and cutting and drilling, dry powder inhalers and more particularly to a method to monitor load condition and overall efficiency, safety and reliab... | 10/12/2010 |
| 7812503 | Piezoelectric actuator drive device A fuel injection control apparatus drives piezoelectric actuators for opening and closing injectors of respective cylinders based on energy stored in a capacitor of a DC/DC converter. A current detecting resistor for controlling a boost switch to charge the capacito... | 10/12/2010 |
| 7808152 | Drive device A driving apparatus is provided with: a first base portion; a first stage portion; a first elastic portion which has elasticity to displace the first stage portion in one direction (X axis); a second stage portion which is disposed on the first stage portion and on ... | 10/05/2010 |
| 7808151 | Piezoelectric element detection method, oscillation device, and vibrating gyroscope The measurement of the characteristic of the piezoelectric element of the oscillation device, particularly, the equivalent serial resistance value can be carried out without using a measurement device connected to the outside. An oscillation device causes oscillatio... | 10/05/2010 |
| 7800282 | Single-resonator dual-frequency lateral-extension mode piezoelectric oscillators, and operating methods thereof Oscillators include a resonator having first and second electrodes and configured to resonate at a first frequency at which the first and second electrodes carry in-phase signals and at a second frequency at which the first and second electrodes carry out-of-phase s... | 09/21/2010 |
| 7786647 | Micromotion mechanism and microscope apparatus having micromotion mechanism A micromotion mechanism includes: a fixing base; a movable element supported by the fixing base and movable thereon; an ultrasonic actuator for relatively moving the movable element and the fixing base; and a control device for outputting a drive signal of the ultra... | 08/31/2010 |
| 7786648 | Semi-resonant driving systems and methods thereof A driving system in accordance with embodiments of the present invention includes a structure and a vibration system. The structure has at least one point to frictional couple to and drive a movable element in one of at least two directions. The structure also has a... | 08/31/2010 |
| 7755251 | Control apparatus and control method for vibration wave driven apparatus A vibration wave driven apparatus capable of preventing a resonance frequency of a vibrator from being shifted to a frequency side higher than a fixed drive frequency of the vibrator during the execution of phase difference control or voltage control. Driving signal... | 07/13/2010 |
| 7745971 | Driving device and optical apparatus Disclosed is a driving device capable of stably operating a plurality of actuators. Control units supply driving signals to piezoelectric elements to control actuators such that the actuators repeatedly change their operational states between a driving state ... | 06/29/2010 |
| 7741753 | Megasonic apparatus, circuitry, signals and methods for cleaning and/or processing The invention utilizes multiple frequency megasonic generators driving multiple frequency harmonic transducers. Generator signals that increase cavitation efficiency and that have successive time periods with predominantly stable cavitation and predominantly transie... | 06/22/2010 |
| 7737604 | Ultrasonic actuator An ultrasonic actuator includes: an actuator body (5) including an actuator body (50); a control circuit (150) for setting a driving frequency; power supply sources (191, 192) for applying a driving voltage having the driving frequency to... | 06/15/2010 |
