Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8184504 | System and method for positioning A system for small space positioning comprises a transmitting device, movable within an approximate range, configured for transmitting a modulated continuous wave, wherein the modulated continuous wave includes a carrier signal and a base-band signal, and a receivin... | 05/22/2012 |
| 8120993 | Acoustic treatment apparatus and method thereof An acoustic treatment apparatus obtains a first output signal by performing filtering for forming a directivity in a first direction for received sound signals of sound receivers, obtains a second output signal by performing filtering for forming a directivity in a ... | 02/21/2012 |
| 8098544 | Method and system for enhancing accuracy in ultrasonic alignment A method for short range alignment using ultrasonic sensing is provided. The method includes shaping an ultrasonic pulse on a first device to produce a pulse shaped signal and transmitting the pulse shaped signal from the first device to a second device, receiving t... | 01/17/2012 |
| 8085620 | Determining a position of a survey receiver in a body of water To determine a position of a survey receiver used to measure a response of a subterranean structure to a survey signal, positions of the survey receiver as the survey receiver descends in a body of water to a surface are received from an acoustic ranging system. Mea... | 12/27/2011 |
| 8050141 | Direction finder for incoming gunfire A system and method is provided for estimating a trajectory of an incoming bullet based on the acoustics of the shock wave created as the bullet travels through the air. A first auditory signal representing a direct sound from the shock wave is recorded and its azim... | 11/01/2011 |
| 8045418 | Position detecting device, autonomous mobile device, method, and computer program product A device includes a visual-feature detecting unit that detects a visual feature of a sound source based on an image and visual information thereof and outputs visually localizing information indicative of at least a direction thereof, an auditory-feature detecting u... | 10/25/2011 |
| 8009515 | Ground threat location for an aircraft Systems and methods are provided for locating threats to an aircraft that are located on the ground. Associated bearings are determined from an aircraft for each of a plurality of detected shots from a threat at ground level. A plurality of pairs of bearings are sel... | 08/30/2011 |
| 7957225 | Alerting system for a facility A surveillance system is configured to detect a rotary-wing aircraft approaching a fixed facility and provide a warning upon detection. The system includes acoustic processing nodes that receive acoustic signals from the environment surrounding the fixed facility. A... | 06/07/2011 |
| 7952962 | Directional microphone or microphones for position determination Directional microphone or microphones for position determination. One or multiple directional microphones are implemented in various locations to perform acoustic wave capture of acoustic waves associated with object (e.g., a player, a gaming object, a game controll... | 05/31/2011 |
| 7924655 | Energy-based sound source localization and gain normalization An energy based technique to estimate the positions of people speaking from an ad hoc network of microphones. The present technique does not require accurate synchronization of the microphones. In addition, a technique to normalize the gains of the microphones based... | 04/12/2011 |
| 7903500 | Device for localizing acoustic sources and measuring their intensities The invention relates to a device for localizing acoustic sources and measuring their intensity comprising an antenna having at least two sub-antennas, each sub-antenna having at least two branches disposed in a cross or star shape... | 03/08/2011 |
| 7864632 | Headtracking system System and method for tracking of a head comprising generating and radiating at least one acoustical test signal; receiving the radiated acoustical test signal(s) at two locations at the head under investigation and generating electrical measurement signals therefro... | 01/04/2011 |
| 7864631 | Method of and system for determining distances between loudspeakers The invention describes a method of determining the distance (d12) between two loudspeakers (L1, L2), wherein the method comprises the steps of providing a test signal (N), combining the test signal (N) with a sound signal (S) to giv... | 01/04/2011 |
| 7864633 | System and method for position determination of objects A method and a system for detection and position determination of chips, which transmit ultrasound signals in a room. The system comprises electronic identification chips, which are attached to objects that have to be monitored. Each chip is equipped with a transmit... | 01/04/2011 |
| 7800978 | Method for real time matched field processing A method for utilizing a matched field-processing algorithm employing a number of sensors wherein the sensor output is the measured acoustic data as the first input and is translated to a frequency by applying a Fourier transform to a set of time samples as a data v... | 09/21/2010 |
| 7710826 | Method and apparatus for measuring sound source distance using microphone array A method and apparatus for measuring a distance to a sound source. The method includes combining sound source signals input through at least two microphones and generating at least two microphone output signals, and performing an operation on the generated microphon... | 05/04/2010 |
| 7684282 | Localization of a non-destructive testing probe A standard non-destructive testing probe (4) may be coupled with a localization system (10) according to the invention so as to determine the position of the apparatus (4) on the surface to be analyzed (1) at any moment. The locali... | 03/23/2010 |
| 7675819 | Volumetric passive sonobuoy array of polyvinylidene fluoride (PVDF) wires A sonar system for detecting underwater acoustic signals includes a plurality of hydrophone units capable of converting acoustic impulses to electrical signals, the hydrophone units being substantially vertically oriented when deployed in a body of water, and the hy... | 03/09/2010 |
| 7672196 | Sound source localizing apparatus and method A sound source localizer is provided which includes a receiver (41) composed of a plurality of highly versatile microphones (10) each having a predetermined directivity D, a data base (12) which is to calculate a difference in directional sensit... | 03/02/2010 |
| 7606115 | Acoustic airspace collision detection system An acoustic collision detection system that enables an aircraft to detect an approaching target, recognize the potential for collision and change course to maintain a safe separation distance, with or without operator invention. The acoustic collision detection syst... | 10/20/2009 |
| 7561492 | System and method for detection using ultrasonic waves Described is a system and method for detection using an ultrasonic wave. The system may include a first arrangement and a second arrangement. The first arrangement may include a transmitter and a receiver. The transmitter transmits an ultrasonic wave along a surface... | 07/14/2009 |
| 7411865 | System and method for archiving data from a sensor array A system and method for archiving and retrieving information from an array of remote sensors. In a preferred embodiment the invention is incorporated in a gunshot detection and location system to preserve audio information surrounding a gunshot event for later revie... | 08/12/2008 |
| 7408839 | Distance measurement for wireless building automation devices In a building environment, a distance associated with a building automation device is determined as a function of an inserted time delay between a wireless transmission of a signal and wireless reception of another signal. For example, a two-way communication is pro... | 08/05/2008 |
| 7408840 | System and method for disambiguating shooter locations Systems and methods for determining and disambiguating the location of the shooter of supersonic projectiles based on shockwave-only signals are described. Using several spaced sensors, an initial portion of the shockwave-only signals is sensed to determine Time-Dif... | 08/05/2008 |
| 7376045 | System and method for determining positions of towed marine seismic streamers A system comprises a plurality of acoustic transmitters, mounted inside the streamers, adapted to transmit broadband signals having low cross-correlation between the signals of different transmitters; a plurality of acoustic receivers, mounted inside the streamers, ... | 05/20/2008 |
| 7372773 | Method and system of providing clustered networks of bearing-measuring sensors System and method for determining a location of a first target. The sensor network comprises a first sensor cluster comprising a first plurality of bearing measuring sensors. A first gateway is operatively coupled to the first plurality of bearing measuring sensors.... | 05/13/2008 |
| 7366662 | Separation of target acoustic signals in a multi-transducer arrangement The present invention provides a process for separating a good quality information signal from a noisy acoustic environment. The separation process uses a set of at least two spaced-apart transducers to capture noise and information components. The transducer signal... | 04/29/2008 |
| 7362655 | Time-synchronous acoustic signal ranging system and method This is an underwater acoustic ranging system for determining a range to a target object. An acoustic receiver is provided for detecting acoustic energy and determining an angle of arrival of said acoustic energy in at least one plane. An acoustic transmitter transm... | 04/22/2008 |
| 7362654 | System and a method for detecting the direction of arrival of a sound signal The disclosed invention is a highly reliable cost effective sound direction detection system. In the preferred embodiment of the invention the system comprises a device which includes two microphones set at a spread of at lease 5 cm from each other, a digital signal... | 04/22/2008 |
| 7362653 | Underwater geopositioning methods and apparatus A method and apparatus for determining the geophysical position of an autonomous underwater system utilizing underwater acoustic modems that exchange broadband underwater acoustic signals. The method of the invention includes the steps of initiating an exchange of b... | 04/22/2008 |
| 7359285 | Systems and methods for determining shooter locations with weak muzzle detection Systems and methods for locating the shooter of supersonic projectiles are described. The system uses at least five, preferably seven, spaced acoustic sensors. Sensor signals are detected for shockwaves and muzzle blast, wherein muzzle blast detection can be either ... | 04/15/2008 |
| 7356473 | Management and assistance system for the deaf A computer-aided communication and assistance system that uses a signal processing and other algorithms in a processor in wireless communication with a microphone system to aid a deaf person. An instrumented communication module receives information from one or more... | 04/08/2008 |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 7336262 | Coordinate-capturing apparatus A coordinate-capturing apparatus suitable for inputting handwritten characters or diagrams to a computer or a printer is disclosed. The apparatus includes an ultrasonic transmitter mounted on an input pen for transmitting ultrasonic waves, two ultrasonic receivers f... | 02/26/2008 |
| 7333622 | Dynamic binaural sound capture and reproduction A new approach to capturing and reproducing either live or recorded three-dimensional sound is described. Called MTB for “Motion-Tracked Binaural,” the method employs several microphones, a head tracker, and special signal-processing procedures to combine the si... | 02/19/2008 |
| 7333394 | Navigational aid for diver A diver unit computes the direction and distance to a specified target. When the target is obstructed, the diver unit receives navigation assistance data from another diver unit. The navigation assistance data includes direction information that is referenced to a c... | 02/19/2008 |
| 7331310 | Domestic animal training method A method of training animals provides for the creation of a recorded track taking into account a plurality of recording techniques for a particular sound source A stationary microphone is utilized to provide a first layer, a moving microphone as utilized to provide ... | 02/19/2008 |
| 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 |
| 7316162 | Method of determining the sound pressure resulting from a surface element of a sound emitting device A three-dimensional array (10) of microphones (M) is used to determine the three-dimensional sound field above a surface element (ΔS) of a sound emitting surface (S), and the air-particle velocity (un) at the surface element (ΔS) is determined us... | 01/08/2008 |
| 7292501 | Compact shooter localization system and method Systems and methods for locating the shooter of supersonic projectiles are described. Muzzle blast signals are neither sought nor required. The system uses at least two sensors, with each sensor having a 3-axis accelerometer. The sensors are spaced apart at least 1 ... | 11/06/2007 |
