| Patent Number |
Title Of Patent |
Date Issued |
| 6773401 |
Diagnostic medical ultrasound systems and transducers utilizing micro-mechanical components |
August 10, 2004 |
| The use of any micro-mechanical component in an ultrasound system is disclosed. In particular, the use of micro-relays, micro-switches and inductors in the transducer probe head, in the transducer connector, coupled with the system transducer connector(s) or anywhere else in the syst |
| 6645145 |
Diagnostic medical ultrasound systems and transducers utilizing micro-mechanical components |
November 11, 2003 |
| The use of any micro-mechanical component in an ultrasound system is disclosed. In particular, the use of micro-mechanical ultrasound transducers, micro-relays, micro-switches and inductors in the transducer probe head, in the transducer connector, coupled with the system transducer |
| 6605043 |
Diagnostic medical ultrasound systems and transducers utilizing micro-mechanical components |
August 12, 2003 |
| The use of any micro-mechanical component in an ultrasound system is disclosed. In particular, the use of micro-relays, micro-switches and inductors in the transducer probe head, in the transducer connector, coupled with the system transducer connector(s) or anywhere else in the syst |
| 6436047 |
Aperture configurations for medical diagnostic ultrasound |
August 20, 2002 |
| A method and system for obtaining ultrasound data is provided. Different aperture techniques are used for transmit than on receive. The various techniques include synthetic aperture, shorting elements, skipping elements, sliding apertures and combinations thereof. The techniques used |
| 6432055 |
Medical ultrasonic imaging system with three-state ultrasonic pulse and improved pulse generator |
August 13, 2002 |
| A three-state, pulse width modulated, bipolar waveform is constructed by summing a first component with an inverted, time-shifted version of the first component. By properly selecting the time interval for the time shift of the second component, frequency filtering benefits can be ob |
| 6221018 |
Medical ultrasonic diagnostic imaging method and apparatus |
April 24, 2001 |
| A medical diagnostic ultrasonic imaging method and system subdivide the transmit aperture into two or more subapertures, each subaperture having at least four adjacent transducer elements. The subapertures are phased differently with respect to one another to selectively reduce either |
| 6193659 |
Medical ultrasonic diagnostic imaging method and apparatus |
February 27, 2001 |
| An improvement to the method for harmonic imaging including the steps of (a) transmitting ultrasonic energy at a fundamental frequency and (b) receiving reflected ultrasonic energy at a harmonic of the fundamental frequency is provided. The transmitting step includes the step of: app |
| 6174286 |
Medical diagnostic ultrasound method and system for element switching |
January 16, 2001 |
| A method and system for obtaining ultrasound data is provided. Two or more transducer elements are shorted or connected to the same transmit or receive channel for a single transmit or receive event. The affect of any grating lobes generated from shorting the transducer elements are |
| 5913823 |
Ultrasound imaging method and system for transmit signal generation for an ultrasonic imaging sy |
June 22, 1999 |
| An improvement to the method for harmonic imaging including the steps of (a) transmitting ultrasonic energy at a fundamental frequency and (b) receiving reflected ultrasonic energy at a harmonic of the fundamental frequency is provided. For the improvement, the transmitting step includes |
| 5833614 |
Ultrasonic imaging method and apparatus for generating pulse width modulated waveforms with redu |
November 10, 1998 |
| An improvement to the method for harmonic imaging including the steps of (a) transmitting ultrasonic energy at a fundamental frequency and (b) receiving reflected ultrasonic energy at a harmonic of the fundamental frequency is provided. The transmitting step includes the step of tran |
| 4978931 |
Tunable phase shifter having wide instantaneous bandwidth |
December 18, 1990 |
| A phase shifter providing constant group delay and a wide instantaneous bandwidth is taught. In one embodiment, an input port is connected to an output port with a power splitter formed of a transformer connected between the input port and the output port, and having a center tap ser |
| 4878027 |
Direct frequency synthesizer using powers of two synthesis techniques |
October 31, 1989 |
| A fast switching broadband signal synthesizer method and structure are provided which not only has the ability to change frequency and amplitude quickly, but with a minimal dwell time required before switching can again take place. A signal translator can also be constructed in accordanc |
| 4745373 |
Method and structure for synthesizing 2.sup.C Hz from A 2.sup.A.5.sup.B Hz oscillator |
May 17, 1988 |
| A method and structure is provided for phase locking an output signal having, for example, a desired frequency of 2.sup.C Hz with a reference signal having a frequency of 2.sup.A.5.sup.B Hz. The phase comparison is performed at a high frequency in order to minimize phase noise and sp |
| 4675613 |
Noise compensated synchronous detector system |
June 23, 1987 |
| A circuit in a synchronous detector system is provided to minimize and compensate for the errors induced by phase modulation and additive noise in the system. In one embodiment a first-order correction of such errors is achieved by equipping the synchronous detector system with a constan |
