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"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7492666 | Sonar system having multiple pulse sequences A sonar system comprises a transmitter adapted to provide pulse sequences, wherein each of the pulse sequences includes pulses that reflect off an object, a receiver adapted to receive the reflected pulses, and a processor. The processor is configured to transmit a ... | 02/17/2009 |
| 7463551 | Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications The present invention provides a method and apparatus for using an acoustic logging tool conveyed in a borehole in an earth formation for determining a characteristic of the formation. The method comprises using a first acoustic source for generating an acoustic sig... | 12/09/2008 |
| 7463555 | Tri axis high frequency fiber optic acoustic sensor A fiber optic acoustic sensor that detects pressure waves from all incident angles features multiple mandrels orthogonally disposed to provide omni-directional sensing capability. The topology of the mandrels prevents frequency response drop-off characteristic of cy... | 12/09/2008 |
| 7460436 | Apparatus and method for hydraulic fracture imaging by joint inversion of deformation and seismicity A method for hydraulic fracture imaging consistently integrates ground deformation data and microseismic data. A time sequence of hydraulic fracture images is computed from the combined data by first computing an orientation and location of the fracture. A size of t... | 12/02/2008 |
| 7453765 | Scattering diagrams in seismic imaging The analysis of scattering diagrams of the correlation-type representation theorem in inhomogeneous media is improved by the use of virtual events. Virtual events here are events which are not directly recorded in standard seismic data acquisition, but the assumptio... | 11/18/2008 |
| 7453772 | Flexural cylinder projector An inverse flextensional projector exhibits a low frequency flexural mode and a higher frequency “breathing” mode to defeat stealthy targets and to conduct short and long range detection and tracking in littoral waters. The device has much broader bandwidth than... | 11/18/2008 |
| 7450470 | High resolution images from reflected wave energy A process and apparatus for producing signals for controlling a display to produce an image in an imaging system employing a plurality of transducers. First and second beam signals are produced in response to delayed channel signals associated with respective transd... | 11/11/2008 |
| 7450473 | Vehicle rodent repelling method An electronic rodent repelling device includes a housing electrically coupled to an existing power supply source of the vehicle, a power conditioning circuit for receiving an input voltage signal from the existing power supply source, and a signal generator electric... | 11/11/2008 |
| 7450474 | Diagnostic system and method for transducers In accordance with the illustrative embodiment, a diagnostic method for use with multi-element transducers includes determining an acoustic center of a transducer and determining an offset of the determined acoustic center from a theoretical acoustic center of the t... | 11/11/2008 |
| 7443765 | Reconfigurable linear sensor arrays for reduced channel count A reconfigurable linear array of sensors (e.g., optical, thermal, pressure, ultrasonic). The reconfigurability allows the size and spacing of the sensor elements to be a function of the distance from the beam center. This feature improves performance for imaging sys... | 10/28/2008 |
| 7443337 | Synthesizing arbitrary waveforms using convolution processors A method for generating a synthesized waveform from a desired arbitrary waveform via a convolution processor includes: providing a data stream input signal to the convolution processor including an extended duration impulse signal; computing one or more filter coeff... | 10/28/2008 |
| 7443766 | Sensor assembly A sensor assembly includes a seismic sensor element and a shell. The shell at least partially surrounds the sensor element to shield the sensor element from a magnetic field that is generated outside of the shell. ... | 10/28/2008 |
| 7436736 | Hydrophone array module A hydrophone array includes hydrophones having an electret means and may have TFT FETs to generate current in response to received longitudinal wave signals. The arrangement may also be used to transmit longitudinal wave signals. Storage capacitors may be coupled to... | 10/14/2008 |
| 7433266 | Acoustic source localization system and applications of the same A system for locating an acoustic source from an acoustic event of the acoustic source. In one embodiment, the system includes a sensor network having a plurality of spatially separated sensor nodes each located in a predetermined position encountering acoustic wave... | 10/07/2008 |
| 7432846 | Millimeter wave imaging system A millimeter wave imaging system. The system includes at least one millimeter wave frequency scanning antenna for collecting frequency dependent beams of millimeter wave radiation from a narrow one-dimensional field of view; a millimeter wave amplifier for amplifyin... | 10/07/2008 |
| 7432850 | Wideband radar The invention refers to a method and device for wideband radar, the method comprising: —generating a wideband signal (1, 6) with a bandwidth B; —copying the wideband signal (1, 6); —transmitting the wideband signal (6′); —receiving a r... | 10/07/2008 |
| 7423933 | Method for visualization of echoes received by an active sonar using a line spectrum emission The invention relates to a method for the visualisation in a single image of the useful information obtained by the operation of an active sonar with line spectrum emission. The method permits an operator to simultaneously view the echoes which may need monitoring a... | 09/09/2008 |
| 7423929 | Method for laterally steering streamer cables A device and a method for laterally steering a streamer cable towed underwater behind a seismic survey vessel. The device includes a cable-steering assembly rotatably attached to a streamer cable. The assembly includes a body to which one or more wings are mounted. ... | 09/09/2008 |
| 7423931 | Acoustic system for communication in pipelines A system for communication in a pipe, or pipeline, or network of pipes containing a fluid. The system includes an encoding and transmitting sub-system connected to the pipe, or pipeline, or network of pipes that transmits a signal in the frequency range of 3-100 kHz... | 09/09/2008 |
| 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 |
| 7420877 | Method for processing an echo profile In a method for processing an echo profile generated by a pulse-echo ranging system, the echo profile is compared with a time-varying threshold function to identify valid echoes in those portions of the echo profile which exceed the TVT function. Based on the amplit... | 09/02/2008 |
| 7420876 | Obstacle sensor having supersonic sensor An obstacle sensor includes: a supersonic sensor for detecting an obstacle in a first range, the supersonic sensor including a substrate, a transmission device and a reception device disposed on the substrate; a detection element for detecting the obstacle in a seco... | 09/02/2008 |
| 7417923 | Method and apparatus for performing an ultrasonic survey An ultrasonic surveying method includes a network of transceivers adjacent the item to be surveyed to establish a reference plane and locating an array of pingers on the object to be surveyed to establish a survey plane, establishing by ranging from the pingers to t... | 08/26/2008 |
| 7417924 | Apparatus, systems and methods for determining position of marine seismic acoustic receivers Apparatus, systems and methods for calculating position of marine seismic acoustic receivers, and for estimating sound velocity profile of a fluid, are disclosed. One position calculation system includes a vessel, two or more vessel hull-mounted transmitters, a plur... | 08/26/2008 |
| 7414571 | Low frequency asset tag tracking system and method An apparatus and method for low frequency asset tracking includes a low frequency transmitter tag associated with a cargo container or other high value commodity, a plurality of receivers that detect low frequency signals, and a microprocessor that uses algorithms a... | 08/19/2008 |
| 7414570 | System and method for adaptive broadcast radar system An adaptive broadcast radar system for tracking targets is disclosed. The radar system includes a transmitter having sub-apertures and a receiver having sub-apertures. The transmitter sub-apertures generate and code a signal waveform. The signal waveform is coded wi... | 08/19/2008 |
| 7411864 | Method for processing signals in a cement bong logging tool A longitudinally segmented acoustic transducer for a cement bond logging (CBL) tool having a plurality of adjoining PZT ring-like segments driven synchronously in parallel by one or more pulses and caused to vibrate in an anti-resonant mode, substantially below the ... | 08/12/2008 |
| RE40456 | Acoustic wave imaging apparatus and method An acoustic imaging apparatus and method that achieves desired delays with coded signals. Linear, curved linear and sector scanning is provided in 1-D arrays and planar, curved planar and sector scanning is provided in 2-D arrays. Composite and non-linear implementa... | 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 |
| 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 |
| 7408842 | Sonar dome The Invention is a reinforced plastic sonar dome having a low acoustical insertion loss combined with sufficient mechanical strength. Acoustical and structural fibers are stochastically mixed and formed into a blended yarn. The blended yarn is woven into a blended f... | 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 |
| 7406002 | Method and apparatus for the acquisition of seismic movements The method and the apparatus disclosed serve to acquire seismic induced movements. A coil and a permanent magnet are contained in an enclosure and the seismic movements induce a relative movement between said coil and said magnet. The current induced into the coil i... | 07/29/2008 |
| 7400553 | One-return wave equation migration A one-return wave equation migration is used to extrapolate both down-going and up-going waves. Followed by a properly designed imaging condition, the partial image contributed form turning waves is correctly reconstructed. Numerical examples show that this method c... | 07/15/2008 |
| 7397421 | Method for detecting acoustic emission using a microwave Doppler radar detector Acoustic emissions are detected by reflecting microwave radar signals off of an object, receiving reflected radar signals, generating an intermediate frequency, and filtering the intermediate frequency to remove low frequency signals associated with object movement ... | 07/08/2008 |
| 7397417 | Electromagnetic impulse survey apparatus and method utilizing a magnetic component electromagnetic antenna The invention relates to an apparatus and method for performing passive geophysical prospecting. More particularly, the present invention relates to an improved apparatus and method for locating and selected subsurface Earth material deposits or geologic formations ... | 07/08/2008 |
| 7391676 | Ultrasonic distance sensors A lithographic apparatus comprises an illumination system, a support constructed to support a patterning device, and a projection system. In pixel grid imaging, a large number of small optical spots are imaged onto the substrate surface using a micro-lens array (MLA... | 06/24/2008 |
| 7388810 | Ultrasonic distance measurement system A system for measuring distance in a gas or liquid operating medium has an even number of ultrasonic signal transmitters (12, 14), and a single ultrasonic signal receiver (16). The ultrasonic signal transmitters are adapted to transmit ultrasonic signa... | 06/17/2008 |
| 7385549 | Millimeter wave portal imaging system A millimeter wave portal imaging system for the detection of concealed weapons, explosives and other contraband items. A preferred millimeter wave imaging system includes a number (such as 64) of millimeter wave detection units each including a frequency scanning an... | 06/10/2008 |
| 7382682 | Processing seismic data The invention relates to processing seismic data that contains both a desired signal and swell noise. The method is applicable to seismic data is in the frequency-space domain method and comprises determining a signal-only prediction filter from the seismic data at ... | 06/03/2008 |
