Patent
Multi-beam digital beamforming method and apparatus
TLDR
In this paper, an interpolation-decimation filter is incorporated into the beamformer at a most advantageous place that allows the final beamforming to be simple and performed at a relatively low data rate and allows the higher rate signal processing to be confined to circuitry which may advantageously be on a single type of integrated circuit.Abstract:
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 multi-phase data in N parallel summing paths An interpolation-decimation filter receives the multi-phase data from the N parallel summing paths and provides at its output a signal having a reduced data rate (1/N) In accordance with this technique, the speed of operation of the individual digital circuits for forming the required beamforming delays is not increased as compared to conventional post-beamforming interpolation schemes, so that hereby the effective data rate is increased by a factor N and results in a decrease of the delay quantization error by a factor N In accordance with the principles of the invention, the interpolation-decimation filter is incorporated into the beamformer at a most advantageous place That is, it is incorporated into the beamformer processing after partial beamforming of a group of receive channels and before formation of the final beam This approach allows the final beamforming to be simple and performed at a relatively low data rate and allows the higher rate signal processing to be confined to circuitry which may advantageously be on a single type of integrated circuit which is repetitively used in the beamformer Further increase in the effective speed of operation is produced by providing timing circuitry that allows parallel processing of signals from a plurality of scanning beam linesread more
Citations
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PatentDOI
Portable ultrasound imaging system
TL;DR: In this article, a portable ultrasound imaging system includes a scan head coupled by a cable to a portable battery-powered data processor and display unit, including an array of ultrasonic transducers and the circuitry associated therewith.
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Method and apparatus for coherent image formation
TL;DR: In this paper, a transducer array is used for imaging an object using a transceiver array for transmitting one or more beams that are steered and/or translated to transmit scan lines for multiple excitation events.
PatentDOI
Medical diagnostic ultrasound system and method
TL;DR: In this paper, the authors described a medical diagnostic ultrasound imaging system and method in which a non-real-time operating system is used to transfer image data, which can be used to display image data from a hard disk to system memory for display, or to scroll image data to view a loop of image data.
PatentDOI
Portable ultrasound imaging data
TL;DR: In this paper, a portable ultrasound imaging system includes a scan head coupled by a cable to a portable battery-powered data processor and display unit, including an array of ultrasonic transducers and the circuitry associated therewith.
Patent
Transmitter patterns for multi beam reception
Kenneth Abend,Elsayed H. Attia +1 more
TL;DR: In this paper, a transducer pad and associated processor collects and processes ultrasound blood velocity data in a 3D region through the use of a planar phased array of piezoelectric elements.
References
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Patent
Digital beamformer having multi-phase parallel processing
TL;DR: In this paper, an interpolationdecimation filter receives the multi-phase data from the N parallel summing phaths and provides at its output a signal having a reduced data rate (1/N).
PatentDOI
Doppler velocity processing method and apparatus
TL;DR: In a preferred embodiment, the spatial processing is for only a single pair of adjacent ones of ultrasonic echo signals and the estimation developes a two dimensional image of blood flow velocities in the body of a patient.
PatentDOI
Architecture for ultrasonic imaging
TL;DR: In this article, a butterfly phase rotator circuit was employed to correct for phase differences in beam steering and focusing in an ultrasonic imaging processing system using read-only memory for phase correction in conjunction with digital multiplication and summing.
Patent
Beam former for ultrasonic diagnostic apparatus
TL;DR: In this article, a beam former for a ultrasonic diagnostic apparatus is arranged to have low-bit analog-to-digital converters (4a, 5a) and enables to obtain an excellent echo signal from blood flow.