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| Number | Title | Issue Date |
| 7966158 | Measurement apparatus The measurement apparatus includes a distortion correcting unit configured to generate a plurality of correction signals by correcting the plurality of signals using a distortion coefficient which is stored in the apparatus, a square-root of sum of squares arithmeti... | 06/21/2011 |
| 7813900 | Displacement detection method, displacement detection device, displacement detection program, phase singularity matching method and phase singularity matching program A displacement detection method detects a displacement from phase singularities before and after the displacement, by specifying the phase singularities based on predetermined elements by acquiring the elements from a phase structure of the phase singularities, and ... | 10/12/2010 |
| 7640142 | Position measurement apparatus and method and pattern forming apparatus and writing method A position measurement apparatus includes a movable stage structure, a measurement unit using a laser to measure a moved position of the stage and to output a corresponding measured value, a first filter configured to attenuate a first component of a certain frequen... | 12/29/2009 |
| 7596472 | Device for synthesis of a composite digital signal with explicit control of the first three moments thereof The device determines the weighting coefficients to be applied to N digital source signals to form a composite signal. The first- to third-order moments of the composite signal must respectively present mean value, variance and skewness characteristics predefined by... | 09/29/2009 |
| 7536282 | Method and system for statistical filters and design of statistical filters Systems and methods for the design or implementation of statistical filters for use in the spectral shaping of transmissions are disclosed. A desired power spectrum may be mapped to find pole locations that approximate the desired spectrum. These pole locations may ... | 05/19/2009 |
| 7392161 | Identifying a state of a system using an artificial neural network generated model The state or condition of a system may be evaluated by comparing a set of selected parameter values, converted into a trial vector, with a number of model or exemplar vectors, each of which was represents a particular state or condition of a sample system. Examples ... | 06/24/2008 |
| 7363200 | Apparatus and method for isolating noise effects in a signal A matrix includes samples associated with a first signal and samples associated with a second signal. The second signal includes a first portion associated with the first signal and a second portion associated with at least one disturbance, such as white noise or co... | 04/22/2008 |
| 7299161 | Decorrelation of signals A method of strongly decorrelating signals comprising processing input signals to determine delay and rotation parameters which implement at least one elementary paraunitary matrix. The parameters transform the input signals into output signals with improvement in a... | 11/20/2007 |
| 7248975 | Real time monitoring of particulate contamination in a wafer processing chamber An apparatus and method for use is described which permits real time monitoring of build-up of particulate contamination in a wafer processing chamber. The apparatus is capable of monitoring particle build up in regions of a processing chamber which are not accessib... | 07/24/2007 |
| 7246021 | Automatic front light optical axis direction adjusting system for vehicles The directions of optical axes of headlights of a vehicle are adjusted based on a steering angle by switching filters of different response speed characteristics. The filters are provided with hystereses along boundaries neighboring to each other. The filters are sw... | 07/17/2007 |
| 7212956 | Method and system of representing an acoustic field A method of representing a sound field includes the steps of acquiring measurement signals (cn) which are delivered by simple sensors (2n) that are exposed to sound field (P) determining encoding filters which are representative of at least the... | 05/01/2007 |
| 7206722 | Oscilloscope having an enhancement filter An enhancement filter for an oscilloscope is disclosed wherein the enhancement filter may be initially calibrated for one or more channels and/or for one or more attenuation settings such as 50 mV per division, 100 mV per division, and/or 200 mV per division, for ex... | 04/17/2007 |
| 7162397 | Decoding an alternator output signal An engine diagnostic system is provided that enables a service technician to evaluate engine cylinder contribution to output power. The service technician couples one or more signal leads to the vehicle's battery, alternator, or accessory receptacle (e.g., cigarette... | 01/09/2007 |
| 7078872 | System and method for conditioning a signal A method of conditioning a signal being communicated between a system to be controlled and a controller may include monitoring an actual output signal and conditioning the actual output signal. The method also includes determining the difference between the actual o... | 07/18/2006 |
| 7078960 | Method and system for filter tuning using a digital trim value A method for storing a result of a tuning process includes generating a first characteristic signal using a signal generator. The method also includes generating a second characteristic signal using a master circuit, wherein the master circuit generates the second c... | 07/18/2006 |
| 7035776 | Low noise to signal evaluation The invention provides for improved signal to noise ratios in evaluation techniques. This is done by acquiring a signal, processing it to obtain a complex form thereof, obtaining a filtering factor from the complex form and processing the acquired signal with the fi... | 04/25/2006 |
| 7027962 | System and method for self-configuring and self-optimizing filters A system and method for self-configuring and self-optimizing filters is presented. A computing device monitors the number of occurrences of event types at particular stages in a data stream and adjusts filter properties in order to maximize processing efficiency bas... | 04/11/2006 |
| 7015975 | Image processing device with a processing unit that processes image data in units of one scan line The objective of the invention is to provide an image processing device that can operate at high speed even if input/output with respect to the outside is performed at low speed, and that can fully exploit processibility, by means of input line memory 23 and ... | 03/21/2006 |
| 6952446 | Digital filter bank followed by monobit receivers for signal processing The present invention uses narrow-band monobit receivers after a digital filter bank to separate simultaneous signals in one channel. The invention improves the capability of wideband digital receivers. ... | 10/04/2005 |
| 6950375 | Multi-phase clock time stamping Multi-phase clock time stamping for improving time stamp resolution is provided. One of many possible embodiments is a method for generating a time stamp having an improved time resolution for an event signal. Briefly described, one such method comprises the steps o... | 09/27/2005 |
| 6944579 | SIGNAL SEPARATION METHOD, SIGNAL PROCESSING APPARATUS, IMAGE PROCESSING APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS AND STORAGE MEDIUM FOR RESTORING MULTIDIMENSIONAL SIGNALS FROM OBSERVED DATA IN WHICH MULTIPLE SIGNALS ARE MIXED Signals are separated by introducing a function having a monotonously increasing characteristic like an exponential type function as a cost function, and applying an adaptive algorithm that minimizes that cost function in terms of a signal separation matrix. That is... | 09/13/2005 |
| 6940896 | Method for seamlessly combining adjacent filters in a frequency channelizer An improved method is provided for seamlessly combining adjacent subchannels in a signal processing system. Each adjacent subchannel is defined to include a first and a second linear phase digital filter, where the filters are implemented using digital circuitry hav... | 09/06/2005 |
| 6868369 | Tachometer A tachometer used to measure a speed of an engine. The tachometer includes a pickup, a counter circuit, a conversion circuit, an automatic switching device, an indicator and a meter display. The inductive pickup may be disposed around a spark plug wire of the engine... | 03/15/2005 |
| 6868365 | Optimal ratio estimator for multisensor systems A signal processing technique can be effectively used for source separation, signal enhancement, and noise reduction when using a twin microphone system. The class of stochastic signals for which ratio-estimates can be computed from histograms is defined. This class... | 03/15/2005 |
| 6853961 | Method for estimating a correlation matrix of interfering signals received through a sensor array Process for estimating the correlation matrix of signals of unknown characteristics in an array of N sensor. The process determines the correlation matrix {circumflex over (R)}s of the signals of known characteristics, estimates the correlation matrix {circumflex ov... | 02/08/2005 |
| 6847917 | Method and apparatus for selecting condition indicators in determining the health of a component Disclosed are techniques used in connection with determining a health indicator (HI) of a component, such as that of an aircraft component. The HI is determined using condition indicators (CIs) which parameterize characteristics about a component minimizing possibil... | 01/25/2005 |
| 6826982 | Method and apparatus for detection of structural damage The entire contents of these applications are incorporated herein by reference. A method and apparatus for detecting and monitoring fractures in a structure by monitoring acoustic energy transmitted within the structure by receiving continuously over a period of tim... | 12/07/2004 |
| 6691073 | Adaptive state space signal separation, discrimination and recovery This invention unifies a set of statistical signal processing, neuromorphic systems, and microelectronic implementation techniques for blind separation and recovery of mixed signals. A set of architectures, frameworks, algorithms, and devices for separati... | 02/10/2004 |
| 6549858 | Structural control and monitoring using adaptive spatio-temporal filtering A method and apparatus for decoupling complex multiple degree-of-freedom (MDOF) responses measured on linear dynamic systems into constituent single degree-of-freedom (SDOF) modal responses. A data acquisition and processing system periodically samples re... | 04/15/2003 |
| 6484111 | Real time signal analyzer This invention relates to a real time signal analyzer that can produce time domain data and frequency domain data at the substantial same time and in real time, securing the simultaneousness between them, and can analyze them with changing the setting of ... | 11/19/2002 |
| 6415247 | System identification method and its recording device A system identification device is provided capable of performing a sequential updating process and preventing the quantity of operation from becoming too complex. The system identification device includes a first delay for delay of y2 (n), a ma... | 07/02/2002 |
| 6122605 | Apparatus and method for filtering a digital signal A closed loop feedback control system operates to maintain a process variable at or near a process variable setpoint. A digital filter is implemented with the controller to filter the process variable signal input to the controller. The filter includes bo... | 09/19/2000 |
| 6094626 | Method and system for identification of genetic information from a polynucleotide sequence A method and system for the identification of genetic information from a polynucleotide sequence is described. Genetic information from a raw polynucleotide sequence is identified by assigning values to nucleotide base changes along the raw polynucleotide... | 07/25/2000 |
| 5943642 | Method of designing subband digital filter bank A method of designing a subband digital filter bank having first and second analysis filters with a 2-band linear phase satisfies a perfect reconstruction (PR) condition and has transfer functions H0(z) and H1(z) separated into first and second polyphase ... | 08/24/1999 |
| 5925093 | Sampling frequency converting apparatus A sampling frequency converting apparatus according to present invention is such an apparatus in which, when a first digital signal of a sampling frequency Fsi is converted into a second digital signal of an arbitrary sampling frequency Fso by using a dig... | 07/20/1999 |
| 5566096 | Integrated electrical signal switching and amplifying system A signal management system is disclosed which integrates a patient switching box and an amplification unit into a single compact enclosure sufficiently small to reside by the patient table in an operating unit set up for electrophysiology procedures. The ... | 10/15/1996 |
| 5495554 | Analog wavelet transform circuitry An analog circuit implementing a continuous wavelet transform forms a multiplicity of analog wavelet outputs. These analog wavelet outputs can be used for data compression. This analog circuit is estimated to be about one-hundredth (1/100) the size and po... | 02/27/1996 |
| 5451852 | Control system having signal tracking window filters A control system having a source of control signals and a multi-window electrical signal tracking filter. The signal tracking filter includes an operational amplifier operating in the non-inverting mode as a high impedance load, with a plurality of input ... | 09/19/1995 |
| 5347464 | High-pass filter for enhancing the resolution of AC power line harmonic measurements An instrument employs a high-pass filter and an associated amplifier to reduce the number of Analog-to-Digital-Converter bits required to determine the amplitude of harmonics contained in digitally sampled AC (alternating current) power system voltage or ... | 09/13/1994 |
| 5210705 | Digital filtering with single-instruction, multiple-data processor A single-instruction multiple-data processor (10) has an input layer especially designed for high data input and output rates. The processor (10) has a number of processing elements (20), each corresponding to incoming data samples. The processing element... | 05/11/1993 |
