| Patent Number |
Title Of Patent |
Date Issued |
| 6774540 |
Sound converting apparatus |
August 10, 2004 |
| Herein disclosed is a sound converting apparatus for performing conversion between electric signals and ultrasonic waves, comprising: a plurality of oscillation bodies for emitting ultrasonic waves converted from the electric signals along a wave propagating direction Dp; and a plurality |
| 6572552 |
Ultrasonic diagnostic apparatus |
June 3, 2003 |
| An ultrasonic diagnostic apparatus for observing a detectable object to be ultrasonically diagnosed. The apparatus includes an ultrasonically diagnostic probe unit for probing the object with ultrasonic waves in response to input pulse signals and with an ultrasonic echo from the obj |
| 6425872 |
System for measuring physical parameter utilizing vibration transmission |
July 30, 2002 |
| A physical parameter measuring system is provided which measures a physical parameter such as a blood pressure of a person using oscillation transmission. The system includes a phase detector, an A/D converter, an arc center determining circuit, and a phase angle determining circuit. The |
| 6364836 |
Ultrasound diagnostic apparatus |
April 2, 2002 |
| An ultrasound diagnostic apparatus includes a probe which outputs RF signals. There are N phase detectors for converting the RF signals outputted from the probe into baseband signals In and Qn, where "N" denotes a first predetermined natural number and "n" denotes a second predetermi |
| 6354998 |
Blood pressure determining apparatus and method of determining excitation frequency used in the |
March 12, 2002 |
| A blood pressure determining apparatus is provided which applies oscillations to the blood vessel of a subject through an exciter to determine the blood pressure based on the frequency of the oscillations propagated through the blood vessel measured by an oscillation sensor. The appa |
| 6344023 |
Ultrasonic diagnostic imaging system |
February 5, 2002 |
| A nonlinear distortion-based ultrasonic diagnostic imaging system displays a raised-resolution video of tissue inside a body at an increased frame rate. Using a two-pulse technique, a transducer driver supplies narrower-width and wider-width driving pulses to a transducer, which tran |
| 6275447 |
Sound generating apparatus, a sound detection apparatus, an acoustic sensor, and an acoustic liv |
August 14, 2001 |
| A sound generating apparatus or a sound detecting apparatus includes: a flexible substrate; and a plurality of bimorphs arranged on a surface of the flexible substrate in a direction at a predetermined interval, each of the bimorphs having input/output terminals. Each of the bimorphs has |
| 6106469 |
Method and apparatus for reducing undesired multiple-echo signal in ultrasound imaging |
August 22, 2000 |
| First 1-sound-line received signals are successively generated from an output signal of a transducer. One is selected from among the generated first 1-sound-line received signals as a 1-sound-line received signal of interest. Second 1-sound-line received signals are selected from among t |
| 6099472 |
Ultrasonic diagnostic system using a nonlinearity of an examined body with respect to propagatio |
August 8, 2000 |
| An ultrasonic diagnostic system includes a transducer. A first electric drive signal is fed to the transducer. A second electric drive signal is fed to the transducer at a time different from a time of the feed of the first electric drive signal thereto. The second electric drive signal |
| 5419333 |
Ultrasonic doppler blood flow meter apparatus |
May 30, 1995 |
| An ultrasonic Doppler blood flow meter apparatus includes a wall filter for eliminating clutter from an echo signal of an ultrasonic pulse signal sent to a living being under test. The wall filter includes a switch for cutting a part of input data and a control unit for controlling the s |
| 5419330 |
Ultrasonic diagnostic equipment |
May 30, 1995 |
| In an ultrasonic diagnostic equipment for performing synthetic aperture, deterioration of picture quality produced by the movement of an object is prevented, thereby to provide an excellent image. Arrayed piezoelectric transducers are driven by a transmitting circuit so as to transmit |
| 5388079 |
Partial beamforming |
February 7, 1995 |
| In accordance with the principles of the present invention, advantage is taken by the inventors of the fact that the speed of operation of the digital hardware in a digital beamformer can be reduced by providing, for example, multiple phases of the data signals and then processing the |
| 5369624 |
Digital beamformer having multi-phase parallel processing |
November 29, 1994 |
| In accordance with the principles of the present invention, advantage is taken by the inventors of the fact that the speed of operation of the digital hardware in a digital beamformer having a plurality of parallel receiving channels can be reduced by providing multiple phases for the |
| 5311870 |
Ultrasonic Doppler imaging apparatus |
May 17, 1994 |
| An ultrasonic Doppler imaging apparatus emits ultrasonic pulse waves to an object body under test and provides information on blood flow in the body based on Doppler shifts of ultrasonic waves reflected back from the object body. The ultrasonic pulse waves emitted by a probe to the objec |
| 5269308 |
Ultrasonic doppler imaging apparatus |
December 14, 1993 |
| Disclosed is an ultrasonic Doppler imaging apparatus in which the velocity of a blood flow in a living body can be computed with high precision without increasing a scale of a signal processing circuit, so that a Doppler color image having satisfactory image quality is displayed. In the |
| 5263483 |
Beam former for ultrasonic diagnostic apparatus |
November 23, 1993 |
| A beam former for a ultrasonic diagnostic apparatus is arranged to have low-bit analog-to-digital converters and enables to obtain an excellent echo signal from blood flow. The beam former further includes a sample and hold circuit for sampling an echo signal of a pulse reflected from th |
| 5261407 |
Ultrasonic doppler blood-flow meter |
November 16, 1993 |
| There is provided an ultrasonic Doppler blood-flow meter which can suppress the occurrence of unwanted frequency components by suppressing the jump of signal to thereby produce images of high quality A DC feedback circuit is provided which negatively feeds back a Doppler deviated signal |
| 5220923 |
Ultrasonic doppler blood flowmeter |
June 22, 1993 |
| An ultrasonic Doppler blood flowmeter has a Doppler scanning mode of operation to obtain information about blood speed and a B mode of operation to obtain information for a tomogram. In order to produce supplementary Doppler shift data for use during a B-mode scanning period, Doppler |
| 5161537 |
Ultrasonic diagnostic system |
November 10, 1992 |
| An ultrasonic probe has an elongated form with an end. A transducer element array is disposed in the probe for emitting ultrasonic wave frontward with respect to the end of the probe and receiving echo ultrasonic waves. The transducer element array converts the received echo ultrasonic w |
| 4936308 |
Method and apparatus for measuring acoustic characteristics and temperature |
June 26, 1990 |
| An acoustic characteristic measurement method comprising transmitting into a specimen an ultrasonic probe pulse and a pulse formed by the superposition of the probe pulse centroid on a pump pulse of a lower frequency than that of the probe pulse at a portion where the particle accele |
| 4844082 |
Ultrasonic examination apparatus |
July 4, 1989 |
| The present invention relates to an ultrasonic examination apparatus which transmits ultrasonic waves into a body to be examined and receives the echo signals therefrom for examination of the inside of the body. The ultrasonic examination apparatus measures acoustic characteristics such |
| 4817615 |
Ultrasonic temperature measurement apparatus |
April 4, 1989 |
| An ultrasonic diagnostic apparatus detects variations of an acoustic characteristic to obtain the fluctuation of temperature within a body to be examined. The ultrasonic diagnostic apparatus includes an ultrasonic transducer for transmitting an ultrasonic wave and receiving the reflected |
| 4787393 |
Ultrasonic tomographic with alternate image scaling |
November 29, 1988 |
| An ultrasonic tomographic diagnosis apparatus suitable for skin disease displays a first ultrasonic tomographic image (12) of an object of a fairly broad area, wherein sizes in depthwise direction (X in FIG. 1) displayed in an enlarged scale in relation to sizes in a direction (Y in |
| 4754760 |
Ultrasonic pulse temperature determination method and apparatus |
July 5, 1988 |
| A first ultrasonic pulse formed by the superposition of a probe pulse on a pump pulse having a frequency lower than the center frequency of the ultrasonic probe pulse where the particle velocity of the pump pulse is in the vicinity of zero in addition to which the particle acceleration o |
| 4722345 |
Ultrasonic diagnostic multiple-sector image display system |
February 2, 1988 |
| In an ultrasonic imaging system echo signals representative of the amplitude of ultrasonic energy returning along a plurality of angularly spaced paths are sampled at a constant speed and stored into a buffer memory. At a speed inversely proportional to the cosine of the angle of sai |
| 4641260 |
Digital signal processing apparatus for a blood flowmeter using ultrasound Doppler effect |
February 3, 1987 |
| A digital signal processing apparatus is shown which is applicable for real time operation in the power spectrum of the detected outputs of ultrasonic Doppler blood flowmeter. The apparatus comprises a digital operating means, a memory means which is connected to said digital operating m |
| 4552152 |
Ultrasonic diagnostic apparatus using Doppler effect |
November 12, 1985 |
| Ultrasonic echo signals are detected in phase and integrated with a period corresponding to an ultrasonic pulse. The integrated values are sampled and the difference between two integrated values is successively frequency-analyzed. |
| 4470308 |
Arc scan ultrasonic imaging system having diverging lens and path-length compensator |
September 11, 1984 |
| An ultrasonic imaging system comprises a transducer array including a plurality of elongated piezoelectric transducers successively arranged along a curved surface for emission of diverging beams of acoustic energy and an acoustic diverging lens affixed to the curved surface for incr |
| 4440025 |
Arc scan transducer array having a diverging lens |
April 3, 1984 |
| An ultrasonic transducer array for arc scan imaging systems comprises a plurality of elongated piezoelectric transducers arranged successively to define a convexed energy radiating surface. A plano-concave acoustic diverging lens is attached to the convexed surface to diverge the acousti |
| 4423737 |
Combination tomographic and cardiographic ultrasonic imaging method and system |
January 3, 1984 |
| Ultrasonic echo signals are successively sampled and converted to digital echo data which are written into a first digital memory column by column and then read out row by row into a first buffer memory. The digital echo data which are derived in response to beams successively transmitte |
| 4368643 |
Ultrasonic imaging by radial scan beams emanating from a hypothetical point located behind linea |
January 18, 1983 |
| An ultrasonic imaging system includes a linear array of transducers of which a group of successively arranged transducers is selected and successively shifted to the next by at least one transducer. The transducers of the selected group are successively activated at respective delay |
| 4348902 |
Ultrasonic imaging system using plural square wave pulse trains of successively delayed interval |
September 14, 1982 |
| A sector scan ultrasonic imaging system comprises a source of a plurality of square wave pulse trains each being delayed by a unit quantization time with respect to adjacent trains, and a plurality of transmitter circuits corresponding to the elements of a transducer array. The duration |
