Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 8174930 | Housing for phased array monostatic sodar systems A housing for a phased array monostatic sodar system with a transducer array that emits and receives multiple generally conical main beams of sound along different primary axes. The housing includes one or more upwardly-directed sidewalls that define a volume betwee... | 05/08/2012 |
| 8125849 | Integrated multi-beam acoustic doppler discharge measurement system A system and method for measuring the flow of water in cross-section of a body of water is presented. The system and method comprises a housing having a first transducer and a plurality of second transducers, wherein the first transducer produces an acoustic signal ... | 02/28/2012 |
| RE43090 | Acoustic Doppler channel flow measurement system An improved acoustic Doppler flow measurement system which employs multiple acoustic frequencies to acquire multiple independent backscatter data from the flow channel, combining the data to enable survey measurement of channel flow properties beyond what can be ach... | 01/10/2012 |
| 8009513 | Transducer array arrangement and operation for sodar application An array of transducers for a sodar system, and the operation of the array in a monostatic sodar system. The array is made up of a number of individual sound transducers. Each transducer emits sound into the atmosphere and senses emitted sound that has been reflecte... | 08/30/2011 |
| 7911880 | Acoustic doppler dual current profiler system and method An AD2CP includes at least one transducer assembly emitting sets of slanted directional acoustic beams and receiving the echoes; and electronics that processes the echoes into depth cells and computes velocity in each depth cell. The AD2CP is configured so that each... | 03/22/2011 |
| 7839720 | System and method for acoustic doppler velocity processing with a phased array transducer including using differently coded transmit pulses in each beam so that the cross-coupled side lobe error is removed A system and method for measuring velocity in a fluid medium utilizing a transducer are disclosed. In one aspect, the method comprises transmitting an acoustic signal comprising N (where N is integer and N>1) pings for each of a plurality of beams, receiving echoes ... | 11/23/2010 |
| 7613072 | System and method for determining directional and non-directional fluid wave and current measurements A system for determining the directional properties of surface waves or internal waves of a fluid medium includes a sonar system having a plurality of transducers for generating respective, separate acoustic beams and receiving echoes from one or more range cells lo... | 11/03/2009 |
| 7545705 | System and method for measuring wave directional spectrum and wave height A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity data. Opti... | 06/09/2009 |
| 7542374 | System and method for acoustic Doppler velocity processing with a phased array transducer including applying correction factors to velocities orthogonal to the transducer face A system and method for measuring velocity in a fluid medium utilizing a phased array transducer are disclosed. The phased array transducer comprises a plurality of transducer elements arranged to form a single two-dimensional array. In one aspect, the method compri... | 06/02/2009 |
| 7539082 | System and method for acoustic Doppler velocity processing with a phased array transducer including using a wide bandwidth pulse transmission to resolve ambiguity in a narrow bandwidth velocity estimate A system and method for measuring velocity in a fluid medium utilizing a measuring system are disclosed, wherein the measuring system comprises a transducer. In one aspect, the method comprises transmitting a first set of one or more signals of a bandwidth substanti... | 05/26/2009 |
| 7420875 | Methods and systems for use of an acoustic doppler current profiler for measurement of compact jets A method is provided for improving horizontal spatial resolution of a flow field in compact jet-like current features so as to quantify the axial velocity in the cross section of a compact jet using an Acoustic Doppler Current Profiler (ADCP). The ADCP is a four-bea... | 09/02/2008 |
| 7355545 | Through the wall ranging with triangulation using multiple spaced apart radars A plurality of multi-tone CW radars are used to generate a swath of ranges to a moving object or individual behind a wall or building structure in which the overlap of the range swaths from spaced-apart radars determines the location of the moving object or individu... | 04/08/2008 |
| 7352651 | System and method for determining directional and non-directional fluid wave and current measurements A system for determining the directional properties of surface waves or internal waves of a fluid medium includes a sonar system having a plurality of transducers for generating respective, separate acoustic beams and receiving echoes from one or more range cells lo... | 04/01/2008 |
| 7349483 | Communications device with doppler frequency estimation functions A communications device with the capability of accurately estimating Doppler frequency for improved wireless communication. At radio frame intervals, a complex time-domain response measurement unit obtains complex time-domain response signals representing the charac... | 03/25/2008 |
| 7336223 | System and method for establishing the instantaneous speed of an object A system for establishing the speed, in a safe manner, of an object (1) which is travelling along a known trajectory, including a device (3, 7) for locating the object and direction of its movement, a receiver (6) for receiving a signal from a p... | 02/26/2008 |
| 7325328 | Methods and apparatus to determine vessel draft and amount of cargo loaded in a vessel The present invention discloses the methods and apparatus to acquire, record, and analyze data to determine the draft of a water-borne vessel and/or the amount of cargo that has been loaded in a water-borne vessel. The apparatus includes a portable, handheld housing... | 02/05/2008 |
| 7317660 | System and method for measuring wave directional spectrum and wave height A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system is disclosed. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current veloci... | 01/08/2008 |
| 7286443 | Fast coherent processing for codes with periodic line spectra The present invention is directed to a method of allowing a computational load caused by the implementation of conventional signal processing methods operating by multicopy correlation, by simultaneous correlation of the spectrum of the received signal to copies of ... | 10/23/2007 |
| 7209529 | Doppler compensated receiver A receiver includes a controller which receives A/D sampled input signals and shifts the sampled digital signal to compensate for Doppler effect in the input signal prior to demodulation. The controller compensates for a Doppler increased frequency by shifting the s... | 04/24/2007 |
| 7173880 | Arrangement with an acoustic array with a sound velocity meter Arrangement with an acoustic array with a sound velocity meter, suitable to be arranged under water. The acoustic array is able to receive acoustic signals from an underwater device and to provide acoustic array output data to a processing arrangement such that the ... | 02/06/2007 |
| 7165009 | Apparatus, method and articles of manufacture for velocity and bearing determination of an object A sensor front end is disclosed that is able to discriminate objects based on their range from the sensor and to derive bearing information therefrom. The sensor system includes a signal source for transmitting at least a first and a second sensor signal toward the ... | 01/16/2007 |
| 7117741 | Method and device for ultrasonic vibration detection during high-performance machining Dynamic vibration monitoring of a cutting tool or workpiece is provided by propagating an ultrasonic carrier beam in a stream of fluid flowing from a probe chamber, which includes a transducer, to the cutting tool or workpiece target area. The modulated ultrasonic b... | 10/10/2006 |
| 7069021 | Method and a system for positioning of an electronic device, and an electronic device A method is provided for determining the position of an electronic device by receiving a code modulated signal transmitted by satellites, and position information of the satellites and time data, and by generating local time data. In the method, delta range measurem... | 06/27/2006 |
| 7030806 | Time domain radio transmission system A time domain communications system wherein a broadband of time-spaced signals, essentially monocycle-like signals, are derived from applying stepped-in-amplitude signals to a broadband antenna, in this case, a reverse bicone antenna. When received, the thus transmi... | 04/18/2006 |
| 7007555 | System and method of horizontal wave measurement A system and method of horizontal wave measurement is disclosed. The system for measuring the directional spectrum of waves in a fluid medium having a substantially planar surface may include a sonar system having a plurality of transducers for generating respective... | 03/07/2006 |
| 6999924 | System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech The present invention is a system and method for characterizing human (or animate) speech voiced excitation functions and acoustic signals, for removing unwanted acoustic noise which often occurs when a speaker uses a microphone in common environments, and for synth... | 02/14/2006 |
| 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 |
| 6965753 | Apparatus for performing doppler correction in a wireless communications system Apparatus for Doppler correction in a wireless communications system, including a first frequency synthesizer for generating a carrier signal oscillating at a rate responsive to a first input, a counter coupled to the first input for generating a Doppler compensatio... | 11/15/2005 |
| 6918875 | Ultrasound measurement apparatus An ultrasound wave is transmitted from a probe (120) to a moving reflector (130) and the reflected ultrasound wave is received back by the same probe (120). With n-divided wave bands of the to-be-used spectrum, the ultrasound wave to be transmit... | 07/19/2005 |
| 6850186 | System for determining position and velocity of targets from signals scattered by the targets The present invention relates to a system for using signals scattered by targets to determine position and velocity for each of the targets and comprises a set of transmitters and receivers of electromagnetic or acoustic signals, said transmitters and receivers disp... | 02/01/2005 |
| 6820008 | System and method for measuring deep sea currents A system and method for measuring water currents is disclosed in which an oceanographer can profile and display the water currents for an entire water column in real time. The profile is used in monitoring ocean currents that may pose a risk to the drilling riser or... | 11/16/2004 |
| 6714482 | Acoustic doppler channel flow measurement system An improved acoustic Doppler flow measurement system which employs multiple acoustic frequencies to acquire multiple independent backscatter data from the flow channel, combining the data to enable survey measurement of channel flow properties beyond what can be ach... | 03/30/2004 |
| 6701252 | System for underwater GPS navigation Provided is a system that allows navigation by GPS while underwater by locating the antenna above water and the display below water. In one embodiment, the GPS antenna is attached to a tow-able buoy having a diver-down flag. In another embodiment, the GPS... | 03/02/2004 |
| 6700834 | System and method for measuring wave directional spectrum and wave height A system and method for measuring the directional spectrum of one or more waves in a fluid medium using a multi-beam sonar system. In an exemplary embodiment, range cells located within a plurality of acoustic beams are sampled to provide current velocity... | 03/02/2004 |
| 6691577 | Ultrasonic moving-speed measuring system An ultrasonic moving-speed measuring system comprises a piezoelectric substrate, a thickness-vibration mode transducer, an interdigital transducer, and a signal analyzer. The piezoelectric substrate, the thickness-vibration mode transducer, and the interd... | 02/17/2004 |
| 6633617 | Device and method for compensating or creating doppler effect using digital signal processing Doppler shift compensation by interpolation of a new sample between successively received signal samples using stored values of an interpolation function. The interpolation function has a non-zero amplitude in an argument range symmetrical about zero argu... | 10/14/2003 |
| 6614719 | Ultrasonic doppler effect speed measurement An ultrasound transducer is coupled to a transmitter having a source of ultrasound signal. A receiving ultrasound transducer is coupled to a preamplifier and mixer. The mixer is further coupled to a demodulator and filter which in turn is coupled to an am... | 09/02/2003 |
| 6577267 | Device and method for contactlessly measuring speed on surfaces A device for non-contractual measurement of the speed of an object moving over a surface comprises a means for radiating a signal of fixed frequency at an angle onto the surface in or against the direction of motion, said angle being variable by the movem... | 06/10/2003 |
| 6535158 | Kinematic analysis of conically scanned environmental properties A method for determining the velocity of features such as wind. The method preferably includes producing sensor signals and projecting the sensor signals sequentially along lines lying on the surface of a cone. The sensor signals may be in the form of lid... | 03/18/2003 |
| 6317385 | Aquaculture feeding monitor The invention is a system for measuring the rate of food pellet loss in a fish farming operation. The fish are held in a seacage in a body of water. Food dropped into the seacage sinks down through the cage and uneaten pellets exit the bottom of the seaca... | 11/13/2001 |
