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| Number | Title | Issue Date |
| 8174935 | Adaptive array control device, method and program, and adaptive array processing device, method and program using the same [Object] To provide an adaptive array control method, device, and program, and an adaptive array processing method, device, and program, capable of performing accurate coefficient update control independent of frequency characteristics and incoming directions of sig... | 05/08/2012 |
| 8107322 | Device and method for attenuating an anti-resonant circuit A device for the attenuation of an anti-resonant circuit which has a first capacitor and a secondary inductance. A signal is able to be coupled into the anti-resonant circuit via a primary inductance. An attenuator is connected in parallel to a switching device and ... | 01/31/2012 |
| 8072842 | Channel impulse response estimation A method of estimating the impulse response of a channel is disclosed. The method includes transmitting an impulse signal to the channel, detecting a received signal from the channel at a receiver, and calculating an estimate of the impulse response of the channel b... | 12/06/2011 |
| 8059488 | Method for operating an ultrasonic sensor, and corresponding ultrasonic sensor In a method for operating an ultrasonic sensor in duplex mode, a transmission trigger for triggering an acoustic transmitted signal is transmitted from a control device for controlling the ultrasonic sensor to the ultrasonic sensor via a first duplex channel at a mu... | 11/15/2011 |
| 8014230 | Adaptive array control device, method and program, and adaptive array processing device, method and program using the same To provide an adaptive array control device, method, and program adapted to be able to output an enhanced target signal by precisely carrying out a coefficient update control of a plurality of signals input from a group of sensors arranged in an array, the coefficie... | 09/06/2011 |
| 7944775 | Adaptive array control device, method and program, and adaptive array processing device, method and program [Object] By enabling accurate coefficient update, a high-quality array processing output which is less influenced by frequency characteristics and incoming directions of input signals control can be acquired, irrespective of the frequency characteristics and incomin... | 05/17/2011 |
| 7929376 | Method and apparatus for identifying noise sources A computer implemented method and apparatus for identifying component breakdown of noise sources. Noise data is received for a noise source from an array of sound sensors. Measurement points of interest, candidate sound source points along an axis, and array apertur... | 04/19/2011 |
| 7839721 | Modal beam processing of acoustic vector sensor data The present invention, as typically embodied, represents a novel methodology for effecting linear processing of output signals that are received from one or more acoustic vector sensors. First, as pertains to each modal beam, the modal beam amplitude response b... | 11/23/2010 |
| 7782710 | System for detecting, tracking, and reconstructing signals in spectrally competitive environments A method and system for determination of the trajectory, miss distance, and velocity of a projectile using an antenna array. The present invention also includes a method and system for extracting signal vectors of simultaneously spectrally competitive component fiel... | 08/24/2010 |
| 7768876 | Channel impulse response estimation A method of estimating the impulse response of a channel is disclosed. The method includes transmitting an impulse signal to the channel, detecting a received signal from the channel, and calculating an estimate of the impulse response of the channel by applying a c... | 08/03/2010 |
| 7679998 | System for detecting, tracking, and reconstructing signals in spectrally competitive environments A system applicable to acoustic, seismic, electromagnetic, hydrodynamic, and shock waves utilizing a map between signal time series and signal vectors defining the mathematical wave field model characterizing the signal's wave field. This map is developed from wave ... | 03/16/2010 |
| 7656750 | Echo detection An echo detection circuit that detects an echo by detecting the magnitude of a digitally mixed representation of the received acoustic signal and reference sine and cosine signals. That magnitude is then compared against an echo threshold to verify the presence or a... | 02/02/2010 |
| 7646676 | Synchronous re-sampling based signal extraction Sampling of a captured signal is synchronized to a tonal which may be unstable in frequency detected in the signal to cause it and all of its harmonics, sub-harmonics and fundamental to appear to have a substantially constant frequency relative to the sampling rate ... | 01/12/2010 |
| 7643377 | System for detecting, tracking, and reconstructing signals in spectrally competitive environments A system applicable to acoustic, seismic, electromagnetic, hydrodynamic, and shock waves utilizing a map between signal time series and signal vectors defining the mathematical wave field model characterizing the signal's wave field. This map is developed from wave ... | 01/05/2010 |
| 7586813 | Signal processing apparatus for an ultrasound transducer, ultrasound receiver and method for operating an ultrasound receiver To reduce signal interference and improve the signal-to-noise ratio in the transmitted signal, the analog signals produced by an ultrasound transducer are promptly digitized. In accordance with the invention, the demodulator is already shielded from the ultrasound t... | 09/08/2009 |
| 7583562 | Transducer circuit coupled to a control unit through a cable The transducer circuit includes a transducer component, a drive circuit for the transducer component, a control port for coupling the drive circuit to a control unit and a modulator. The modulator has an input port for receiving a signal or data from another device.... | 09/01/2009 |
| 7433267 | Two wire resistive sensor A circuit with two terminals that receive an input current. The circuit includes a sensor, and a controller to generate a modulated signal. The circuit also includes a flyback circuit that receives the modulated signal. The flyback circuit generates a first output v... | 10/07/2008 |
| 7423934 | System for detecting, tracking, and reconstructing signals in spectrally competitive environments A system applicable to acoustic, seismic, electromagnetic, hydrodynamic, and shock waves utilizing a map between signal time series and signal vectors defining the mathematical wave field model characterizing the signal's wave field. This map is developed from wave ... | 09/09/2008 |
| 7411866 | User interface containing acoustic sensing modules The present invention relates to a user interface system that is acoustically operated for the control of connected devices. Through the interface, acoustic sounds, such as tap, can be distinguished from less than 10 cm apart. ... | 08/12/2008 |
| 7372774 | System for detecting, tracking, and reconstructing signals in spectrally competitive environments A system applicable to acoustic, seismic, electromagnetic, hydrodynamic, and shock waves utilizing a map between signal time series and signal vectors defining the mathematical wave field model characterizing the signal's wave field. This map is developed from wave ... | 05/13/2008 |
| 7366057 | Converter control with LC filtering An arrangement for signal processing in ultrasonic transducers in flow meters has an ultrasonic transducer acted upon by a drive signal with the ultrasonic transducer being connected to a resonant circuit matched to the frequency of the drive signal. The resonant ci... | 04/29/2008 |
| 7363177 | Apparatus and method for performing the time delay estimation of signals propagating through an environment A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple... | 04/22/2008 |
| 7358798 | Nonlinear filter A system and a method are disclosed for converting analog signal to digital. An analog to digital converter system comprises an analog to digital converter (ADC) and an adaptive filter coupled to the ADC, wherein the adaptive filter is coupled to the ADC in a feedfo... | 04/15/2008 |
| 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 |
| 7332849 | Method and transducers for dynamic testing of structures and materials A transducer for dynamic testing of specimen is disclosed. The transducer comprises at least two equally-spaced actuators, and a supporting block for supporting the at least two equally-spaced actuators and for mounting the transducer to the specimen. Each of the at... | 02/19/2008 |
| 7315241 | Enhanced perception lighting The present invention relates to an enhanced perception lighting (EPL) system for providing enhanced perception of a user's physical environment. The EPL system comprises a sensor module for detecting and sampling a physical aspect from at least one point in a physi... | 01/01/2008 |
| 7304912 | Scale adaptive filtering A scale adaptive filtering scheme is developed for underspread channels based on a model of the linear time varying channel operator as a process in scale. Recursions serve the purpose of adding detail to the filter estimate until a suitable measure of fidelity and ... | 12/04/2007 |
| 7302062 | Audio enhancement system An audio enhancement system for compensating for ambient noise in a listening environment, comprises an audio system that produces an electrical sound signal and generates a sound output from the electrical sound signal. A sensor (e.g., a microphone) senses a total ... | 11/27/2007 |
| 7293248 | System and method for accommodating non-Gaussian and non-linear sources of variation in statistical static timing analysis There is provided a system and method for statistical timing analysis of an electrical circuit. The system includes at least one parameter input, a statistical static timing analyzer, and at least one output. The at least one parameter input is for receiving paramet... | 11/06/2007 |
| 7292651 | Pilot-aided channel estimation for OFDM in wireless systems A method and apparatus for pilot-symbol aided channel estimation in a wireless digital communication system which transmits packets of N OFDM data blocks, each data block comprising a set of K orthogonal carrier frequencies. At the transmitter, pilot symbols are ins... | 11/06/2007 |
| 7289388 | Estimation of background noise and its effect on sonar range estimation A system and method for estimating the SNR in a sonar environment and for determining the effect of the estimated SNR on sonar ranging accuracy. The system includes a sensor, a transmitter, a receiver, a plurality of band-pass filters, a cross correlator, and a data... | 10/30/2007 |
| 7277469 | Method for conjoint channel and direction of arrival estimation Method of estimating the channel and the direction of arrival of a signal transmitted by a transmitter and received by an array of antennae after being propagated along at least one path, comprising, for each path, a first step of estimating phase differences (ξ | 10/02/2007 |
| 7272072 | Method of converting received data to a two-dimensional color map Beams of sampled data are converted into a two-dimensional color map thereof. Fourier transforms are performed on range cells of each beam with each transform being sampled M times where M is defined by M discrete sets of red, green and blue intensity values of a co... | 09/18/2007 |
| 7225113 | Systems and methods for statistical modeling of complex data sets The present invention comprises methods and a computer-readable medium comprising programming code for automatic statistical modeling of data. In an embodiment, the analysis is completely automatic with a single computer stroke providing an analysis of data with at ... | 05/29/2007 |
| 7212466 | Producing amplitude values for controlling pixel illumination on a sonar display A method and apparatus for producing an amplitude value for use in controlling illumination of a pixel on a display, in response to a sampled sonar signal produced by an element of a sonar array. A pixel time associated with the pixel is found, the pixel time repres... | 05/01/2007 |
| 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 |
| 7203322 | Acoustic detector with noise cancellation An acoustic detector that includes active noise cancellation is presented. An acoustic detector converts sound waves, which include sound waves of interest as well as noise, to an electronic signal. An operator listens for a characteristic sound, for example the sou... | 04/10/2007 |
| 7202797 | System and a method for detecting, locating and discerning an approach towards a linear installation A system and a method for detecting, locating and identifying incidents of approaching a linear installation (e.g.—buried pipe line, railway, fence etc.), that includes plurality of sensing units positions in an array along the length of the linear installation, a... | 04/10/2007 |
| 7173395 | Inverter unit grounding method and inverter unit A circuit system that includes a sensor circuit for a sensor that detects the state of a motor is provided in an inverter unit for driving the motor. A 0V of the circuit system is connected with a shield braid of a shielded cable that connects the sensor circuit and... | 02/06/2007 |
| 7173966 | Compensation for non-linear distortion in a modem receiver A method and modem receiver for receiving serial data from a transmission link, for recovering data from the received data, and for synchronizing the receiver timing to that of the transmitter are disclosed. A receiver equalizer includes a filter and quantizer in th... | 02/06/2007 |
