Abstract: The present invention includes an ultrasonic diagnostic apparatus for forming differential image data by performing differential operation among topographic image data obtained in time series, an apparatus for giving color codes which designate display colors to differential image data, an apparatus for cumulating a plurality of frames of differential image data, and an apparatus for displaying respective cumulated differential images in colors designated by the color codes in which motion of a moving portion of a patient's body is displayed in colors by superposing a plurality of differential images.

Abstract: The present invention relates to a thick film resistor material which is suitable especially for thick film hybrid IC having conductor, resistor, semiconductor element and the like in which Cu is used as the conductor and furthermore, a thick film resistor composition which can be fired in a reducing atmosphere. The present invention further relates to a thick film hybrid IC using the thick film resistor composition as a resistor and a method for making it.

Abstract: In a semiconductor device such as hybrid IC, thermal heads, etc., a thick film resistor of the semiconductor device contains a boride particle of a metal dispersed in a glass matrix, the particle having a particles size of 0.005 to 0.1 .mu.m. Generation of a thermal stress can be suppressed and the electroconductive particles themselves form isotropic electroconductive passages by such dispersion, and the semiconductor devices can have a distinguished electroconductivity. Preferable boride of a metal is LaB.sub.6, which gives distinguished resistor characteristics.

Abstract: A delay circuit of ultrasonic diagnostic apparatus comprising a delay line consisting of a plurality of unit portions connected in cascade, in each of which an anode of a first variable capacitance diode and a cathode of a second variable capacitance diode are connected with a connecting point of two inductors connected in series, or a delay line obtained by replacing capacitances in a second order all pass type delay line by variable capacitance diodes, or a delay line, in which variable capacitance diodes and inductors form a balanced circuit; and control circuit for applying a reverse bias voltage to each of the variable capacitance diodes; and an amplifier or a variable resistance circuit using FETs serving as a matching circuit for the delay line, capable of varying continuously an input impedance by using a control voltage from the exterior.

Abstract: A flow meter for detecting a flow speed in such a manner that an ultrasonic pulsed continuous wave is repeatedly transmitted toward an object at predetermined intervals T, a phase vector indicative of the phase of a reception signal due to the reflected wave is produced at the predetermined intervals, the phase difference between the present phase vector and the preceding phase vector is detected, and a Doppler frequency is calculated from the average value of a plurality of phase difference values to obtain the speed of the object.

Abstract: A flow meter for detecting the average speed of an object in such a manner that an ultrasonic pulsed continuous wave is repeatedly transmitted toward the object to obtain a phase vector from the reception signal of the wave reflected from the object, the phase difference between consecutive ones of phase vectors obtained at an interval T equal to the period of transmitted wave is detected, a plurality of phase difference values are added and averaged to obtain an average phase difference value, and a Doppler frequency is calculated from the average phase difference value to obtain the average speed of the object, in which in order to remove an error caused by aliasing of an angle in the course of the arithmetic operation for obtaining the average phase difference value, a plurality of presumed average phase difference values having the error are calculated from the average phase difference value, the difference between the change of a phase caused by adding the phase difference values successively and the cha

Abstract: A ceramic electronic component having a structure in which thin film electrodes made of a Ni-Al system alloy or a Ni-Cr-Al system alloy are formed so as to make contact with a functional ceramic thin film.

Abstract: A substrate for hybrid IC which comprises a substrate, a thick film resistor containing glass, formed on the substrate, and a thick film conductor at the terminal of the thick film resistor, where a means for preventing diffusion of the glass from the thick film resistor into the thick film conductor is provided between the thick film resistor and the thick film conductor has a stable resistance as a thick film microresistor and is applied to various uses such as cellular radio communication system.

Abstract: In a pulse Doppler flow speed meter in which ultrasonic wave pulses are transmitted repetitively at transmission intervals T and thereafter transmitted repetitively at transmission intervals (T+Ts), phases of reflected waves due to reflection of individual transmission pulses are measured sequentially to provide phase signals and the phase signals are subjected to frequency analysis to determine speed distributions, distributions of phase differences between phase signals corresponding to transmission pulses transmitted at the transmission intervals T and distributions of phase differences between phase signals corresponding to transmission pulses transmitted at the transmission intervals (T+Ts) are determined. A value of center of gravity of the former phase difference distributions and a value of center of gravity of the latter phase difference distributions are determined and then a phase difference between the two values of center of gravity is determined.

Abstract: In an ultrasonodiagnostic tomography apparatus for transmitting focused sound wave from a plurality of transducers forming an array to a predetermined focus point and for carrying out beam formation for receiving sound from said focus point with dynamic focusing, wherein the width of transmission beam at said focus point is controlled by means of said transducers so that the width of transmission beam at said focus point may be larger than the width of receiving beam from said focus point.

Abstract: In an ultrasonic imaging apparatus utilizing an array type ultrasonic probe having a number of arrayed probe elements, high frequency pulse signals subject to different delays are supplied to respective probe elements so as to generate an acoustic beam which converges to a predetermined focal point. When receiving a reflection acoustic beam resulting from the converging beam, a plurality of signal lines extending from respective probe elements are connected in common to set up a plurality of element groups each having a plurality of adjacently arrayed elements and respective signals derived from respective element groups are differently delayed and added together to generate a reception signal representative of a reception beam having a predetermined focal point.

Abstract: A pulse doppler apparatus transmits a ultrasonic sound wave at transmission intervals T and T+Ts alternately and iteratively, detects the phase difference attributable to the doppler shift in the reflected sound wave signal at the interval T and the phase difference in the reflected signal at the interval T+Ts sequentially, detects the difference between both phase differences, and transforms the difference into a doppler frequency. The apparatus includes an MTI filter which exerts the same filtering characteristics on the reflected sound signals at both intervals T and T+Ts.

Abstract: A multi-gated pulsed wave color Doppler imaging system is used to provide accurate non-invasive measurements of liquid flow through a narrowed orifice by using the color Doppler to first measure the velocity of flow along an axis perpendicular to the orifice to provide a first image of the liquid velocity. The first image includes a two-color interface at locations in the image representing locations where the liquid velocity is equal to the aliasing velocity of the color Doppler imaging system. The distance from the two-color interface to the center of the orifice is measured and saved. A second image is obtained along an axis perpendicular to the first axis to represent the flow of liquid to the orifice from the perimeter of the orifice. The distance from a two-color interface to the center of the orifice in the second image is measured. The two measured dimensions are used to model a hemi-ellipsoidal surface proximal to the orifice wherein all points on the surface have the same isovelocity.

Abstract: A flow meter, in which pulsed continuous ultrasonic wave is transmitted towards an object at predetermined intervals T to obtain a phase vector from a reception signal of wave reflected by the object and which calculates a Doppler frequency from the average value of phase differences between phase vectors at the sampling interval T to obtain a signal indicating the speed of the object, comprising a phase difference calculator by the auto-correlation method, by which a plurality of phase difference vectors indicating phase differences between phase vectors are added, the argument of the sum vector thus obtained representing the average phase difference, or a phase difference calculator by the 2-axial-component method, by which a phase difference is divided into 2 axial components, a cosine value and a sine value, and the average phase difference is obtained by using the average value for each of the components, and a phase difference calculator by the phase difference averaging calculator, by which a plurality

Abstract: A chip-type resonator comprises a piezoelectric member, a plurality of inner electrodes embedded in the piezoelectric member parallel to one another and spaced apart at intervals along the direction of thickness, and a pair of outer electrodes provided on side surfaces of the piezoelectric member and connected with the inner electrodes. The inner electrodes are provided in an odd number of at least three. The piezoelectric member is so polarized that one of its portions located between one pair of the inner electrodes expands and another portion between an adjacent pair contracts upon application of voltage between the outer electrodes.This chip-type resonator is manufactured by preparing a plurality of sheets for providing a piezoelectric member, forming electrodes on the same, stacking and firing the same and performing the prescribed polarization.

Abstract: A ultrasonic Doppler meter for measuring the speed of a moving body by measuring the phase shift due to the Doppler effect on received signals, comprising a transmitting/receiving unit transmitting ultrasonic bursts with a constant time interval towards the moving body and receiving reflected waves; a unit for measuring a phase difference vector representing a difference between phases of received signals corresponding to two successive transmitted pulses; a unit for calculating a difference between phase differences on the basis of two successive phase difference vectors stated above; and an accumulation unit for adding the difference between phase differences to a preceeding phase difference vector so as to obtain the speed of the moving object.

Abstract: The present invention provides an electronic circuit component having a ceramic base and more particularly to a conductive paste for circuit film and an electronic circuit component having a copper film circuit of 10 .mu.m of less in film thickness formed from said conductive paste and a method for making the electronic circuit component.The characteristic of the present invention resides in a conductive paste comprising 100 parts by weight of copper powder of 1 .mu.m or less in average particle size, 0.01-4 parts by weight of at least one of S, Te and Se and 1-10 parts by weight of a frit glass as a binder.Further, there is provided an electronic circuit component having a copper film circuit containing 0.005-2 parts by weight of at least one of S, Te and Se and an effective amount of a glass as a binder for 100 parts by weight of copper which is produced by forming a circuit pattern of said conductive paste on an insulating base by flexo-printing method or the like and then firing the pattern.

Abstract: In an ultrasonic beam former for phasing and adding received signals supplied from respective elements of an ultrasonic transducer array and for producing the received output in conformity to a desired wave front, a plurality of sampling delay means for sampling and delaying the received signal supplied from each element are disposed for each channel. The plurality of delay means effect the sampling operation successively and alternately. Outputs of delay means are selected by switches activated in response to the alternate sampling operation. As a result, the sampling rate per signal channel is increased.

Abstract: An ultrasonic Doppler blood flow meter comprises a transmit-receive transducer transmitting ultrasonic wave toward and into a living body and receiving an echo signal, quadrature detectors detecting a real (R) component and an imaginary (I) component of the receiving echo signal respectively, A/D converters converting analog output signals of the quadrature detectors into digital signals respectively, a converter subjecting the R and I components to quadrature transformation to generate output signals representing the absolute value and phase angle (.theta.) respectively of the received echo signal, and a signal processing circuit calculating the mean value of the differences (.DELTA..theta..sub.i =.theta..sub.i -.theta..sub.i-1) between the phase angles (.theta..sub.i) and their preceding ones (.theta..sub.i-1) detected when the ultrasonic wave is transmitted and the echo signal is received a predetermined number of times. In the signal processing circuit, the phase angle differences (.DELTA..theta.

Abstract: An apparatus for driving a magnetic head including a monolithic bimorph member. A first end of the monolithic bimorph member has the magnetic head fixed thereto, and the other end thereof is fixed to a support member to be supported by the support member. The monolithic bimorph member comprises a piezoelectric ceramic sintered body formed from a plurality of electrodes stacked alternately with ceramic layers. The plurality of electrodes includes first and second electrode groups which are electrically connected with each other by conductors in through holes. The through holes are provided in portions of the sintered body close to the end fixed to the support member.