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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 8125850 | Method for identifying gas leaks using a stationary seabed placed steered beamformed acoustic antenna with active narrow beam transmitter interrogation capability A method for identifying position of acoustic source proximate sediments below the bottom of a body of water includes deploying a plurality of arrays of acoustic sensors on the bottom of the body of water. Each array includes a plurality of lines of acoustic sensors... | 02/28/2012 |
| 7924654 | System for beamforming acoustic buoy fields A system using beamforming techniques in conjunction with an active or passive acoustic buoy field, where the buoy field has a plurality of buoys, each buoy employing at least one sensor attached to and extending substantially downward from that buoy so as to form a... | 04/12/2011 |
| 7656749 | Systems and methods for analyzing acoustic waves Systems for analyzing acoustic waves are provided. An exemplary system includes a housing, multiple acoustic passageways and an acoustic sensor. The housing defines an interior cavity. The multiple acoustic passageways communicate acoustically between the interior c... | 02/02/2010 |
| 7606114 | Systems and methods implementing frequency-steered acoustic arrays for 2D and 3D imaging Frequency-steered acoustic arrays transmitting and/or receiving multiple, angularly dispersed acoustic beams are used to generate 2D and 3D images. Input pulses to the arrays are generally non-linear, frequency-modulated pulses. Frequency-steered acoustic arrays may... | 10/20/2009 |
| 7415117 | System and method for beamforming using a microphone array The ability to combine multiple audio signals captured from the microphones in a microphone array is frequently used in beamforming systems. Typically, beamforming involves processing the output audio signals of the microphone array in such a way as to make the micr... | 08/19/2008 |
| 7408841 | System and method for calculating the directivity index of a passive acoustic array A software system and method is presented that calculates the sensor directivity at all spatial angles, and stores these values in a two dimensional matrix. These values are then used as additional “weighting” coefficients in the equation for the pressure detect... | 08/05/2008 |
| 7391872 | Parametric audio system A parametric audio system having increased bandwidth for generating airborne audio signals with reduced distortion. The parametric audio system includes a modulator for modulating an ultrasonic carrier signal with a processed audio signal, a driver amplifier for amp... | 06/24/2008 |
| 7321882 | Method for supervised teaching of a recurrent artificial neural network A method for the supervised teaching of a recurrent neutral network (RNN) is disclosed. A typical embodiment of the method utilizes a large (50 units or more), randomly initialized RNN with a globally stable dynamics. During the training period, the output units of ... | 01/22/2008 |
| 7319640 | Noise suppression system A method and apparatus is provided for suppressing noise which includes receiving a plurality of signals from an array of sensors and transforming each of these signals to the frequency domain. The transformed signals are beamformed so that noise sources can be iden... | 01/15/2008 |
| 7317764 | Method of signal transmission to multiple users from a multi-element array A communication method is provided, in which a data vector u which contains respective signal data destined for each of a plurality of users is transmitted from multiple antennas or other transmitting elements. Prior to transmission, a perturbation vector τl is add... | 01/08/2008 |
| 7313741 | Integrated semiconductor memory An integrated semiconductor memory includes memory cells that store a first data record has at least one datum with a first or second data value and a second data record has at least one datum with the first or second data value. The integrated semiconductor memory ... | 12/25/2007 |
| 7276990 | Single-pole multi-throw switch having low parasitic reactance, and an antenna incorporating the same A switch arrangement comprises a plurality of MEMS switches arranged on a substrate about, and close to, a central point, each MEMS switch being disposed on a common imaginary circle centered on the central point. Additionally, and each MEMS switch is preferably spa... | 10/02/2007 |
| 7274794 | Sound processing system including forward filter that exhibits arbitrary directivity and gradient response in single wave sound environment A sound processing system including at least one microphone, an audio processor, and at least one output device. The audio processor includes an analog beamformer, a microphone equalizer, and an apparent incidence processor. Two different embodiments of the apparent... | 09/25/2007 |
| 7266044 | Method and apparatus for acoustic source tracking 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 track the motion (bearing change and range change) of an object (target) relat... | 09/04/2007 |
| 7253699 | RF MEMS switch with integrated impedance matching structure An impedance matching structure for a RF MEMS switch having at least one closeable RF contact in an RF line, the impedance matching structure comprising a protuberance in the RF line immediately adjacent the RF contact that forms one element of a capacitor, the othe... | 08/07/2007 |
| 7245269 | Adaptive beam forming antenna system using a tunable impedance surface A method of and apparatus for beam steering. A feed horn is arranged so that the feed horn illuminates a tunable impedance surface comprising a plurality of individually tunable resonator cells, each resonator element having a reactance tunable by a tuning element a... | 07/17/2007 |
| 7171312 | Chemical and biological agent sensor array detectors Chemical and biological detector systems, devices and apparatus. Such devices may be portable and wearable, such as badges, that are analyte-general, rather than analyte-specific, and which provide an optimal way to notify and protect personnel against known and unk... | 01/30/2007 |
| 7164387 | Compact tunable antenna The present disclosure relates to a method and an antenna for transmitting/receiving a RF signal at a plurality of different frequencies. Transmitting/receiving a RF signal at a plurality of different frequencies is achieved by providing a F antenna comprising a plu... | 01/16/2007 |
| 7157649 | Contact sensitive device Method and apparatus using bending wave vibration to calculate information relating to a contact on a contact sensitive device. The contact sensitive device has a member capable of supporting bending waves, and a device attached to the member measures bending wave p... | 01/02/2007 |
| 7154451 | Large aperture rectenna based on planar lens structures A rectenna structure comprising a flexible, dielectric sheet of material; a plurality of metallic lenslets disposed on the sheet of material; and a plurality of diodes disposed on the sheet of material, each diode in said plurality of diodes being arranged at a focu... | 12/26/2006 |
| 7139341 | Receiver circuit for a communications terminal and method for processing signals in a receiver circuit A receiver circuit for a communications terminal includes a signal pre-processing circuit having: an analog/digital converter device with K analog/digital converters connected in parallel, a conversion device, and a filter device connected downstream of the conversi... | 11/21/2006 |
| 7119553 | Security scanners with capacitance and magnetic sensor arrays Security scanning devices based on electrical tomography, including tomography systems based on the measurement of capacitance (ECT) and electromagnetic tomography (EMT), in combination with knowledge-based image analysis and understanding. Each device includes a se... | 10/10/2006 |
| 7113089 | Object locator standing alone or embedded in the existing device This invention provides an object locator to locate a variety of target objects. A selective directional transceiver is used to determine the relative direction of the target object, even in a multiple-story building, from a hand held component of the object locator... | 09/26/2006 |
| 7109918 | Nonlinear beam forming and beam shaping aperture system This invention exploits the synchronization properties of coupled, nonlinear oscillators arrays to perform power combining, beam steering, and beam shaping. This architecture utilizes interactions between nonlinear active elements to generate beam patterns. A nonlin... | 09/19/2006 |
| 7106658 | Navigation system and method using directional sensor An apparatus for determining a position includes a source which transmits a signal having a source position and a transmission time coded therein. A sensor having a directional beam pattern is positioned at the location of interest. A signal processor steers the dir... | 09/12/2006 |
| 7079025 | Reconfigurable geolocation system A portable reconfigurable geolocation system is provided. The system includes a portable user node and one or more portable pseudolite nodes in communication one another and with the user node. Each of the user nodes and pseudolite nodes includes a transmitter that ... | 07/18/2006 |
| 7071888 | Steerable leaky wave antenna capable of both forward and backward radiation Leaky wave antenna beam steering that is capable of steering in a backward direction, as well as further down toward the horizon in the forward direction than was previously possible, and also directly toward zenith. The disclosed antenna and method involve applying... | 07/04/2006 |
| 7068234 | Meta-element antenna and array An antenna having at least one main element and a plurality of parasitic elements. At least some of the elements have coupling elements or devices associated with them, the coupling elements or devices being tunable to thereby control the degree of coupling between ... | 06/27/2006 |
| 6999378 | Parallel GCS structure for adaptive beamforming under equalization constraints A parallel GSC structure is provided by which an adaptive process is performed by a plurality of beamformers in parallel in such a way that they present a common response to the equalization signal that varies over time in an optimal manner with respect to the stati... | 02/14/2006 |
| 6980485 | Automatic camera tracking using beamforming An acoustic tracking system that uses an array of microphones to determine the location of an acoustical source. Several points in space are determined to be potential locations of an acoustical source. Beamforming parameters for the array of microphones are determi... | 12/27/2005 |
| 6937938 | Method and apparatus for interferometry, spectral analysis, and three-dimensional holographic imaging of hydrocarbon accumulations and buried objects A methods and apparatus for the detection and exploration of buried objects and hydrocarbons uses two separate signals having different frequency characteristics combined to enable interferometric analysis and imaging systems including radar, sonar, seismological, a... | 08/30/2005 |
| 6922206 | Videoconferencing system with horizontal and vertical microphone arrays A system and method for acoustic source location using a horizontal and vertical microphone array. Tilt sensors are provided within each array to allow full determination of the tilt of each array. Based on the acoustic source location results, an image capture devi... | 07/26/2005 |
| 6914854 | Method for detecting extended range motion and counting moving objects using an acoustics microphone array An acoustic array platform comprising multiple spaced microphones and associated processing electronics/algorithms projects distinct beams in a chosen look direction across which moving objects such as vehicles pass. These moving objects are accurately detected, cla... | 07/05/2005 |
| 6894642 | Doubly constrained robust capon beamformer A method for enhanced Capon beamforming includes the steps of providing a sensor array including a plurality of sensor elements where an array steering vector corresponding to a signal of interest (SOI) is unknown. A covariance matrix fitting relation is bounded for... | 05/17/2005 |
| 6885612 | Panoramic audio device for passive sonar The invention concerns panoramic audio devices to process the impulsive signals received by passive sonars. It consists in isolating, in each beam, impulsive signals in the frequency and time domains and then filtering them according to the characteristics of the hu... | 04/26/2005 |
| 6868043 | Beam broadening with maximum power in array transducers A system and method to provide maximum power over large angular sectors using an array of transducers is disclosed. Array segments of transducers and phase shifters form a beam from each of the array segments, wherein the set of beams overlap to form a large sector ... | 03/15/2005 |
| 6868042 | Data-based signal definition for frequency domain adaptive beamforming algorithms A data-based technique is disclosed that defines the amplitude and phase of acoustic signals for detection as they propagate across an array of sensor elements for each array incident angle of interest. The definitions of the acoustic signals are then used to constr... | 03/15/2005 |
| 6856577 | Method and apparatus for forming a reception beam A receiving beam is formed using 60 elements arranged in a 90° sector area of a cylindrical receiving array. Receiving beam 0 is formed with elements 0-59 divided into two (front and rear) groups. Specifically, the elements 0-59 are divided int... | 02/15/2005 |
| 6847588 | Method for changing the frequency for sampling sonar wavefronts A system and method for processing sonar information from an underwater hydrophone array, at frequencies having wavelengths less than two times a spacing between adjacent hydrophones. The method and system all for processing received underwater waveforms at high fre... | 01/25/2005 |
| 6839303 | Matched filter, receiving beam-forming apparatus and sonar system A received beam-forming apparatus is disclosed is which echo signals received by multiple ultrasonic transducer elements arranged in a linear form are sampled at a specific scanning frequency to obtain sample data. A receiving beam-forming apparatus includes a memor... | 01/04/2005 |
