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| Number | Title | Issue Date |
| 8072839 | Hand-held acoustic camera An acoustic camera includes an acoustic transmitter disposed at one longitudinal end of a housing. The transmitter has a convex radiating surface. A diameter of the transmitter is about four times a wavelength of acoustic energy emitted by the transmitter. A plurali... | 12/06/2011 |
| 8023359 | System and method for converting scan data An ultrasound device generates polar-coordinate image data divided up into an (N×M) array of polar-coordinate image data blocks; a first external memory configured to store the (N×M) array of data blocks; a second external memory configured to store x-y coordinate... | 09/20/2011 |
| 8018792 | Method of constructing environmental map using sonar sensors Disclosed herein is a method of constructing an environmental map using sonar sensors. The method includes the steps of checking whether conflict cells have occurred using input sonar sensor data; if conflict cells have occurred, selecting incorrect data and elimina... | 09/13/2011 |
| 7920440 | Method for real-time calculation of receive focusing parameters for beamforming and apparatus thereof A method and an apparatus for real-time calculation of receive focusing parameters for beamforming are provided. The apparatus is coupled to the signal input end of the receive beamforming module of an ultrasound imaging system as an independent accessory, including... | 04/05/2011 |
| 7859941 | Transmit apodization control for microbeamformers Apodization control techniques for a microbeamformer including a plurality of microbeamformer channels each including a transducer, a microbeamformer transmitter for driving the transducer, a microbeamformer receiver for receiving signals from the transducer and usu... | 12/28/2010 |
| 7804736 | Delay controller for ultrasound receive beamformer An ultrasound system includes an ultrasound transducer having an array of elements and a beam origin located between two adjacent elements, each of the elements for converting received energy into an echo signal; and a beamformer that includes an initialization cont... | 09/28/2010 |
| 7679988 | Sound-wave imaging method and apparatus An ultrasound imaging method including an emission step during which an array of transducers is caused to emit at an ultrasound wave focused in a target medium by causing the excitation wave to pass through a reverberant solid object prior to reaching the target med... | 03/16/2010 |
| 7495994 | Continuous, continental-shelf-scale monitoring of fish populations and behavior Areal population density and detailed behavior of fish schools and their interaction are continuously monitored over continental-shelf-scale areas spanning thousands of square kilometers by ocean acoustic-waveguide remote sensing. In some embodiments, the capacity o... | 02/24/2009 |
| 7371218 | Immersive portable ultrasound system and method A portable ultrasound system provides immersive viewing of images. A small, lightweight scope includes a transducer and a display. The display is adapted for viewing ultrasound images close to the eye of the user, such as within five inches or a couple feet of the e... | 05/13/2008 |
| 7366053 | System and method for imaging and tracking contacts within a medium A system for processing one or more detection signals from an acoustic signal detection system to image and track one or more contacts within a medium including a computer configured to receive the detection signal and a computer readable medium operatively coupled ... | 04/29/2008 |
| 7328412 | Method and apparatus for displaying a gain control interface with non-linear gain levels A method for displaying a gain control interface having a gain level display with non-linear gain levels. The gain level display has a first end having an associated first pixel offset value and a second end having an associated second pixel offset value. A range of... | 02/05/2008 |
| 7315485 | System and method for target classification and clutter rejection in low-resolution imagery A system and method of determining a classification of at least one underwater object is provided. The method includes generating at least one low-resolution imagery of an object from a plurality of frequencies produced by a detection device and extracting at least ... | 01/01/2008 |
| 7313260 | Controlling thick-slice viewing of breast ultrasound data An adjunctive ultrasound mammography system and associated methods are described in which an ultrasound image being displayed near an x-ray mammogram image may be superimposed thereon or thereunder by a user for facilitating rapid comprehension of breast structures ... | 12/25/2007 |
| 7301851 | Underway hull survey system A method and survey system for inspecting hulls of ships has a base portion and side portions defining an inspection channel in water. Sonar is mounted on the side portions transmitting acoustic signals onto a hull as a ship passes through the inspection channel, re... | 11/27/2007 |
| 7289938 | Method and a device for detecting discontinuities in a medium A method and a device for detecting discontinuities in a medium by detecting maxima, e.g. in an echo signal of an ultrasound excitation of the media, with maxima corresponding to a given discontinuity being grouped together as a function of coherence criteria applie... | 10/30/2007 |
| 7254519 | Multi channel multiplexed inspection system and method Provided are systems and methods for multi-channel non-destructive inspection which provide high data throughput, logarithmic amplification of large dynamic range, and simplicity of supporting electronics. More specifically, provided are systems and methods for insp... | 08/07/2007 |
| 7221621 | System and method for identification and quantification of sonar targets in a liquid medium A system and method for identifying and quantifying targets within a liquid medium. A raw sidescan sonar image is collected. A region of interest is separated from the image. An image transformation is performed using an extraction algorithm. Salient image character... | 05/22/2007 |
| 7164618 | Dual unit eidetic topographer An underwater detection system that uses two remote vessels in proximity to an object of interest in order to accurately obtain a 3D image of that object. One of the vessels is stationary and includes a first transceiver and a vertical receiving array. The second ve... | 01/16/2007 |
| 7164797 | Clustering Systems and methods for performing clustering of a document image are disclosed. A property of an extracted mark from a document is compared to the properties of the existing clusters. If the property of the mark fails to match any of the properties of the existing ... | 01/16/2007 |
| 7132942 | Method and apparatus for detecting a target material in a sample by pre-screening the sample for piezoelectric resonance A method and apparatus for screening samples to determine which samples include a target material. Generally, the samples are pre-screened to determine which of the samples have a piezoelectric resonance when irradiated with an electric field, to thereby indicate th... | 11/07/2006 |
| 7123546 | Processing technique for forward looking sonar A processing technique and transducer field of view architecture for use as part of an imaging sonar system to develop three-dimensional images of the space below, to the sides, and forward of a ship. ... | 10/17/2006 |
| 7085196 | Method and apparatus for gathering seismic data In the present invention, a seismic receiver contains an onboard digitizer that samples and converts a signal from detected seismic energy into the digital domain. The receiver contains an analog to digital converter, a transmission circuitry, and a link to the seis... | 08/01/2006 |
| 7053820 | Generating three-dimensional images using impulsive radio frequency signals Generating an image matrix includes accessing a round-trip time matrix for a space having points. The round-trip time matrix describes an estimated round-trip time for a signal to travel from a transmit antenna, to a point, and to a receive antenna. Signals reflecte... | 05/30/2006 |
| 7053785 | Security prescreening device An apparatus for prescreening an individual about to be subjected to a security screening including a magnetometer. The prescreening device comprises a base housing having a top panel, and a plurality of downwardly extending sidewalls. The base housing is adapted to... | 05/30/2006 |
| 7010455 | Method and relevant device for revealing objects The invention concerns a method and device, for remote sensing of objects that emit variable thermal emissions having phases, which may include: A. acquisition of a map of the radiation coming from the surface of the portion of space within or behind the object to b... | 03/07/2006 |
| 6996511 | Three-dimensional mesh generating method, magnetic field analysis method for rotating machine, three-dimensional mesh generating device, magnetic field analysis device for rotating machine, computer program, and recording medium A two-dimensional mesh is generated on a plane perpendicular to the rotation axis. At this time, a ring-shaped gap is provided between the rotor and the stator, and portions facing the ring-shaped gap are equally divided into the same number of parts. An initial thr... | 02/07/2006 |
| 6980688 | Method and apparatus for investigating integrity of structural member A method for investigating structural integrity utilizes a carrier member having a flexible surface and a plurality of electromechanical transducer elements attached to the carrier member, the transducer elements being spaced from each other along at least two spati... | 12/27/2005 |
| 6957565 | Method and apparatus for characterizing materials by using a mechanical resonator A method for measuring properties of a fluid that includes oscillating a tuning fork resonator in a fluid. The invention is particularly suitable for in-line monitoring of various physical and electrical properties of fluids flowing in a conduit. ... | 10/25/2005 |
| 6931335 | Jitter histogram approximation For determining a jitter value for a digital data signal, a jitter histogram determined for the digital data signal is substantially approximated using n normal distribution functions. The two outermost normal distribution functions are determine, and the jitter val... | 08/16/2005 |
| 6926671 | Ultrasonic imaging apparatus and method An ultrasonic imaging apparatus and method combines dynamically focused reception and coded transmission/reception technologies by inexpensive circuitry. A receive aperture is divided into smaller apertures. Correspondingly, a receive beam former is divided into rec... | 08/09/2005 |
| 6906560 | Phase-continuous frequency synthesizer A digitally controlled frequency synthesizer has a first direct digital synthesizer that generates a first phase-coherent, time-varying frequency, and a second direct digital synthesizer that generates an offset frequency waveform. A plurality of cascaded frequency ... | 06/14/2005 |
| 6903999 | System and method for estimating seismic material properties A method for estimating near-surface material properties in the vicinity of a locally dense group of seismic receivers is disclosed. The method includes receiving seismic data that has been measured by a locally dense group of seismic receivers. Local derivatives of... | 06/07/2005 |
| 6876597 | Channeled wavefield transformer The channeled wavefield transformer enables multi-dimensional wavefield signal processing which leads to significant expansion of the engineering field of electronic signal processing. The term “wavefield” is used to indicate one or more waves that operate in at... | 04/05/2005 |
| 6873569 | Method, system and probe for obtaining images The process, the imaging system and the probe are intended to obtain images by way of waves emitted by an antenna after reflection of these waves at the level of a target-like assembly illuminated by the waves emitted and on the basis of which the images are extract... | 03/29/2005 |
| 6870791 | Acoustic portal detection system Airports and other public places require security measures for the screening of human subjects for illicit objects and materials concealed from view beneath clothing. However, at present most of such screening processes involve only metal detectors, which are inhere... | 03/22/2005 |
| 6798715 | Biomimetic sonar system and method The Biomimetic Sonar invention ensonifies submerged objects, digitizes acoustic images reflected from the ensonified objects, and classifies and stores the digitized images using electronic processing derived from that believed to be used by Tursiops truncatus | 09/28/2004 |
| 6700832 | Method and apparatus for passive acoustic imaging using a horizontal line array An apparatus for processing passive acoustic signals received on a horizontal line array that were either emitted from an underwater object or echo returned from an object, is proposed to display a radar-like range-bearing image of the object, thereby sho... | 03/02/2004 |
| 6648824 | Ultrasound imaging system for performing receiving focusing at points corresponding to display pixels and method thereof All RF data received by transducers in response to an ultrasonic signal that was transmit-focused on a point along a predetermined scan lines are stored to compute display data for those points of an object that do not necessarily correspond to the pixels... | 11/18/2003 |
| 6540678 | Real-time three dimensional acoustoelectronic imaging and characterization of objects An acoustoelectronic method and apparatus for generating real-time three-dimensional images of an object and characterizing such object are provided. The object is insonified with an incident acoustic signal derived from an electrical signal. Acoustic sig... | 04/01/2003 |
| 6471389 | Dynamic delay curve generator for ultrasonic imaging system A dynamic delay curve generation method for an ultrasonic imaging system having the following steps: (1) obtaining three initial values of K0, N0 and $c;1 from a parameter decoder, where K0 is the initial del... | 10/29/2002 |
