Abstract: The present disclosure introduces an electronic stethoscope capable of achieving a high Signal-to-Noise Ratio (SN ratio) and enhanced auscultatory accuracy. The device comprises a housing 92b, within which are positioned audible range sensors Xv2, Xv4, and Xw1, exhibiting a mechanical resonance frequency within the audible range, and incorporating a drum-shaped detection component designed to detect characteristic audible range signals. Additionally, a signal processing circuit 97, situated within the storage cavity, processes signals outputted from the audible range sensors Xv2, Xv4, and Xw1.

Abstract: The present disclosure includes: a voltage generation unit that has a vibration body 22a1 and a fixed electric potential electrode 24 in contact with a reception surface of the vibration body 22a1, and that generates voltage on the output surface of the vibration body 22a1; and an impedance conversion element that sets a local section, of the output surface, located at a stress concentration site of the vibration body 22a1 as an electric potential generation site, and sets the electric potential in the electric potential generation site as a control voltage. The impedance conversion element has a substrate region 14 of a first conductivity type, and first and second main electrode regions 15a, 15b of a second conductivity type.

Abstract: This acoustic element includes: a first electrode base (12); a second electrode base (11) facing the first electrode base; first electrode-side protrusions (12aq?1, 12aq, 12aq+1, . . . ) provided on the first electrode base and having a first stepped side wall inclined at an angle of 45° or less with respect to a vibration direction; and second-electrode-side protrusions (11ap?1, 11ap, 11ap+1, . . . ) provided on the second electrode base and facing the first electrode-side protrusions so as to at least partially intersect, and having a second stepped The voltage applied between the first electrode base and the second The voltage applied between the first electrode base and the second electrode base causes the first electrode base or the second electrode base to vibrate in the vibration direction.

Abstract: To provide an AI semiconductor element, which has a high sensitivity for smaller element size, and an AEIC. AI semiconductor element encompasses a p-type channel-generation region (14); n-type first and second main electrode regions (15b, 15a) buried in the channel-generation region (14); gate insulating films (12, 16) disposed on the channel-generation region (14) sandwiched by the first and second main electrode regions; a main floating electrode (17c) in a floating state, provided on the gate insulating films; fixed-potential electrodes (17o) located adjacently to the main floating electrode (17c), being set to a first potential; a vibration membrane (23) opposed to the first and fixed-potential electrodes via a vibration cavity; and a vibration electrode (25c) in contact with the upper surface of the vibration membrane (23), is opposed to the fixed-potential electrodes via the vibration cavity, being set to a second potential.

Abstract: Apparatus and method to clearly indicate a region in which a bubble based on therapeutic ultrasonic waves is occurring. A controller acquires reception signals based on an ultrasonic waves that have been transmitted from an ultrasonic probe at differing phases and timings, reflected by a biological tissue, and received by the ultrasonic probe. The controller adds the reception signals to generate a higher harmonic reception signal. The controller acquires a fundamental wave reception signal, which is one of the reception signals. The controller determines a comparison value which represents the difference between the value of the higher harmonic reception signal and the value of the fundamental wave reception signal. The controller determines, on the basis of the comparison value, whether a processing target pixel indicated by the higher harmonic reception signal or the fundamental wave reception signal indicates a cavitation region or a normal region.

Abstract: An acoustic element integrated circuit includes cells, being arrayed two-dimensionally on a same curved surface, wherein capacitive acoustic-elements having vibration membranes are allocated by unit number in each of the cells. Each of the cells encompasses an intra-cell circuit, which includes an exciting circuit for driving collectively portions by the unit number, the portions having transmitting functions of the acoustic-elements, and a reception circuit for processing collectively received signals transferred from portions by the unit number, the portions having reception functions in the acoustic-elements. Here, the exciting circuits are sorted into a chip in which high-voltage drivers for exciting the vibration membranes are merged and a chip in which circuits operated at voltages lower than the high-voltage drivers are merged, and the cells are operated two-dimensionally, by individually controlling the intra-cell circuits so that cells can be driven independently.

Abstract: An ultrasonic receiver encompasses a resin horn, a piezoelectric element provided at a tip of the resin horn exposed to outside, a stealth amplifier disposed at a predetermined minimum distance from the piezoelectric element, embedded in the resin horn and arranged in a behind space to which a shape of the piezoelectric element is projected, configured to change reflection characteristic of a reflection wave reflected by the stealth amplifier, and an input connection member electrically connecting between the piezoelectric element and the stealth amplifier. The predetermined minimum distance is a distance determined by design as a theoretical minimum value of an input stray-capacitance.

Abstract: Method and system for localizing a region of interest in a medium in which cavitation occurs. Method for localizing a region of interest (R) in a medium (M) in which cavitation occurs, the method comprising the steps consisting in: producing cavitation in the region of interest (R), the cavitation generating an acoustic signal, at each of at least three separate positions, detecting a cavitation signal representative of the acoustic signal of the cavitation, for at least two pairs of cavitation signals, determining a delay between the cavitation signals of each pair of cavitation signals, calculating a localization of the region of interest (R) based on the delays and the positions.

Abstract: Method and system for localizing a region of interest in a medium in which cavitation occurs. Method for localizing a region of interest (R) in a medium (M) in which cavitation occurs, the method comprising the steps consisting in: producing cavitation in the region of interest (R), the cavitation generating an acoustic signal, at each of at least three separate positions, detecting a cavitation signal representative of the acoustic signal of the cavitation, for at least two pairs of cavitation signals, determining a delay between the cavitation signals of each pair of cavitation signals, calculating a localization of the region of interest (R) based on the delays and the positions.

Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Abstract: An objective is to enable calculation of a distribution of a physical property such as a density inside a measurement object, even when the distribution of the physical property value is non-uniform, within a feasible period of time without causing image deterioration due to phenomena such as refraction and multiple-reflections caused by the non-uniformity.

Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Abstract: There is provided a ultrasonic motion detecting device that detects a three-dimensional motion of an object. The ultrasonic motion detecting device, comprises first and second ultrasonic transducers 13 having piezoelectric elements arranged in an array, which transmit ultrasonic waves to an object and acquire reflection signals from the object, a motion detection unit 20 that extracts an estimation region which is used for estimating a motion of the object from the reflection signals that are acquired by the first and second ultrasonic transducers, and detects a three-dimensional motion within the estimation region, and an image display unit 19 that displays the three-dimensional motion within the estimation region, wherein ultrasonic wave scanning surfaces due to the first and second ultrasonic transducers cross over each other.

Abstract: An ultrasonographic technique capable of forming a transmission beam enabling multi-beam transmission/reception of identical transmission sensitivity. An ultrasonographic device for imaging inside of an examinee includes a transmitter for transmitting an ultrasonic pulse signal from an ultrasonic element array to the examinee, and a receiver for receiving the ultrasonic pulse reflected from the examinee. The transmitter transmits an ultrasonic pulse signal having a plurality of peaks of substantially equal transmission intensity in the azimuth direction and a trace in the depth direction of each peak as a substantially straight line, from a transmission opening of the ultrasonic element array to the examinee.

Abstract: An objective is to enable calculation of a distribution of a physical property such as a density inside a measurement object, even when the distribution of the physical property value is non-uniform, within a feasible period of time without causing image deterioration due to phenomena such as refraction and multiple-reflections caused by the non-uniformity.

Abstract: A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Abstract: The present invention provides an ultrasonic diagnostic apparatus realizing improved visibility of a contour shape of signal components in an ultrasonic blood flow spectrum display image. The apparatus includes a gray-level correction unit for correcting intensity of an output result of a Doppler processing unit. The Doppler processing unit calculates a Doppler frequency shift in a reception signal output from a receiver and calculates blood flow velocity of a subject on the basis of the Doppler frequency shift. The gray-level correction unit has: a filtering unit for separating a signal and a noise from each other, which are included in a time-varying waveform of the blood flow velocity of the subject obtained by the Doppler processing unit on the basis of continuity on a space defined by the blood flow velocity and time; and a gray-level corrector for performing a gray level correction using, as a parameter, a boundary value between signal intensity and noise intensity obtained by the filtering unit.