An ultrasound circuit comprising a trans-impedance amplifier (TIA) with built-in time gain compensation functionality is described. The TIA is coupled to an ultrasonic transducer to amplify an electrical signal generated by the ultrasonic transducer in response to receiving an ultrasound signal. The TIA is, in some cases, followed by further analog and digital processing circuitry.

A method and circuit for driving and supplying power to ultrasonic transducers with synchronous switched capacity, controlled by digital loop. This circuit includes a power interface controlled by a multi-level square or rectangular signal generator. This device includes a tuning circuit which is controlled by a tuning control circuit to have, with the transducer, a determined natural frequency. Typically, this tuning includes at the input an inductor in series, and at the output a controlled connection capacitor mounted in parallel with the transducer. This connection is controlled according to a detected phase difference detected between the input and the output of the inductor. It is advantageously controlled to provide a phase difference equal to ?/2. Also, an ultrasonic element, an ultrasonic head, and an ultrasonic imaging and/or processing system, especially medical.

An electronic device (1) includes a touch panel display (2), a speaker (3), and a piezo actuator (4). The speaker (3) outputs a sound based on a first sound signal corresponding to a range of a prescribed frequency or more. The piezo actuator (4) is provided on the touch panel display (2), and is deformed in response to at least one of a second sound signal corresponding to a range of less than the prescribed frequency and a control signal for haptics feedback based on a predetermined vibration pattern to vibrate the touch panel display (2).

A noise generator for generating a noise signal over a frequency spectrum has a first noise source and a first digital filter for a first frequency band, a second noise source and a second digital filter for a second frequency band, and an interpolator and a combiner. The first digital filter has a first sample rate and the second digital filter has a second sample rate, wherein the ratio between the second sample rate and the first sample rate, with regard to a sign, corresponds to a ratio between center frequencies of the second frequency band and the first frequency band, wherein an edge of the second digital filters which determines a lower frequency band limit is steeper than an edge of the first digital filter which determines an upper frequency band limit. The interpolator is configured to adjust an output signal of the first digital filter, with regard to its sample rate, to a sample rate of the second digital filter, wherein the combiner is configured to combine the adjusted output signal from the interpolator and the output signal of the second digital filter.

Method and device to create energized polymers that can be used for pain relief, comprised of an ultrasound system that ultrasonically energize polymers that can then be used to provide an analgesic effect. Ultrasound waves are delivered to a polymer through direct contact, through a coupling medium, or without contact in order to energize the polymer. Other energies such as such as UV, microwave, laser, electricity, RF, sun, light, magnetic/electromagnetic, et can also be used to energize the polymer. The energized polymer can be immediately placed on a user to provide an analgesic effect, or the energized polymer can be placed storage material and removed at a later time to be placed on a user to provide an analgesic effect.

A control system for an ultrasonic surgical device has a console operatively connected to a power source and configured for detachable connection to the ultrasonic surgical device. A control circuit of the console is configured to regulate an operating signal to correspond to the operating characteristics of the ultrasonic surgical handpiece in response to a loading signal. An operator input of the console operatively connects to the control circuit to provide a control signal.

The present disclosure provides an ultrasonic sensor, a method for driving the same, and a method for manufacturing the same. The ultrasonic sensor includes a back plate, a sounding structure on the back plate and a backing layer on a side of the sounding structure distal to the back plate; the sounding structure includes a plurality of emitting electrodes, an opposite electrode, a piezoelectric layer and a plurality of signal leads, and the plurality of emitting electrodes and the opposite electrode are respectively arranged on two sides of the piezoelectric layer; and the plurality of emitting electrodes are arranged in an array, and each of the emitting electrodes is individually coupled to one of the signal leads. The ultrasonic sensor may achieve an independent control for each patterned electrode such that the ultrasonic sensor may be used as a point sound source.

An acoustophoresis device made up of modular components is disclosed. Several modules are disclosed herein, including ultrasonic transducer modules, input/output modules, collection well modules, and various connector modules. These permit different systems to be constructed that have appropriate fluid dynamics for separation of particles, such as biological cells, from a fluid.

The invention relates to an actuator (9) for a touch interface module (1) with haptic feedback, the interface module comprising a touch surface (3) able to detect at least one property of a user's touch, the actuator (9) comprising: a frame (11); a moveable core (13) interacting with the frame (11) and intended to be driven to move between extreme positions in order to generate the haptic feedback; and a main actuator connected to the touch surface (3) and able to generate haptic feedback depending on the detected touch and comprising electromagnetic actuating means (15, 17) for driving the moveable core (13) to move, characterized in that it furthermore comprises a controlled secondary actuator (18) cooperating with the moveable core (13).

An acoustophoresis device made up of modular components is disclosed. Several modules are disclosed herein, including ultrasonic transducer modules, input/output modules, collection well modules, and various connector modules. These permit different systems to be constructed that have appropriate fluid dynamics for separation of particles, such as biological cells, from a fluid.