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| Number | Title | Issue Date |
| 8115472 | System and method for space control and remote monitoring A system and method for space control and remote monitoring is disclosed. According to one embodiment, a frequency modulated signal is emitted from a radioscopic device having an antenna. The frequency of the reflected signal from a target is compared with the emitt... | 02/14/2012 |
| 8035369 | Method for detecting an isolated network The subject matter of the invention is a method for detecting an isolated network for an inverter (2) carrying a converter voltage that is adapted for connection in parallel with a grid (5) having a mains frequency and electric loads and that is decoup... | 10/11/2011 |
| 7795858 | Methods and apparatus for computing and using a spectral map for performing nonlinear calibration of a signal path In one embodiment, a spectral map for performing nonlinear calibration of a signal path is developed by 1) identifying a set of frequency locations for a set of particular output signal spurs that result from applying one-tone and two-tone input signals covering a b... | 09/14/2010 |
| 7415164 | Modeling scenes in videos using spectral similarity A computer implemented method models a scene in a video acquired by a camera. For each pixel in each frame of the video, a time series of intensities of the pixel is acquired. A harmonic series is extracted from samples of each time series using a sliding window. Di... | 08/19/2008 |
| 7365527 | System and method for extending the range of a frequency measuring device A range of a frequency measuring device having limited range is extended by pre-processing an input signal. The input signal is divided into a plurality of channels. In each channel, the input signal is divided into sub-bands. A frequency of the input signal is dete... | 04/29/2008 |
| 7339365 | Phase detector and method of phase detection In order to provide a phase detector and a method of phase detection which are distinguished by greater sensitivity and simple implementability, at least one differential signal of two input signals (Ua; Ub) may be formed over at least one pred... | 03/04/2008 |
| 7340259 | Robust, efficient, localization system Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directi... | 03/04/2008 |
| 7323883 | Phase measurement device, method, program, and recording medium When a signal having two or more frequency components is fed to a circuit to be measured, a phase of the signal output from the circuit to be measured is measured. A phase measurement device measures an output when an input signal having two input frequency componen... | 01/29/2008 |
| 7305271 | Device and a method for continuous casting A computer program product for controlling an apparatus for continuous casting of metals. The computer program product includes a computer readable medium and computer program instructions recorded on the computer readable medium executable by a processor for perfor... | 12/04/2007 |
| 7302269 | Radiolocation in a wireless network using time difference of arrival A method and an apparatus for radiolocation using time differences of arrival. The method includes receiving transmit timestamps from a set of wireless stations of a wireless network. Each station transmits at least once. The transmit timestamp uses a local timestam... | 11/27/2007 |
| 7298129 | Time arbitrary signal power statistics measurement device and method A measurement instrument is provided with an FFT module providing a frequency domain output; and a power calculator connected to the frequency domain output to measure power statistics for a test signal of arbitrary length. In some embodiments, a spectrum integratio... | 11/20/2007 |
| 7292656 | Signal pulse detection scheme for use in real-time spectrum analysis A spectrum analysis engine (SAGE) that comprises a spectrum analyzer component, a signal detector component, a universal signal synchronizer component and a snapshot buffer component. The spectrum analyzer component generates data representing a real-time spectrogra... | 11/06/2007 |
| 7271577 | Testing loop impedance in an RCCB electrical test circuit A method and apparatus for testing the loop impedance in residual current circuit breaker (RCCB) protected circuits is provided. An alternating test current is applied across the phase earth connections of a supply and a plurality of voltage samples are then taken a... | 09/18/2007 |
| 7254191 | System and method for real-time spectrum analysis in a radio device A real-time spectrum analysis engine (SAGE) that comprises a spectrum analyzer component, a signal detector component, a universal signal synchronizer component and a snapshot buffer component. The spectrum analyzer component generates data representing a real-time ... | 08/07/2007 |
| 7253631 | Method of determining the impedance of an electrochemical system The invention relates to a method of determining the complex impedance Z(fm) of a non-steady electrochemical system, comprising the following steps consisting in: bringing the system to a selected voltage condition and applying a sinusoidal signal with fr... | 08/07/2007 |
| 7248980 | Method and apparatus for removing quantization effects in a quantized signal One embodiment of the present invention provides a system that reconstructs a high-resolution signal from a set of low-resolution quantized samples. During operation, the system receives a time series containing low-resolution quantized signal values which are sampl... | 07/24/2007 |
| 7224752 | System and method for real-time spectrum analysis in a communication device A spectrum analysis engine (SAGE) that comprises a spectrum analyzer component, a signal detector component, a universal signal synchronizer component and a snapshot buffer component. The spectrum analyzer component generates data representing a real-time spectrogra... | 05/29/2007 |
| 7218091 | Integrated CMOS spectrum analyzer for on-chip diagnostics using digital autocorrelation of coarsely quantized signals An integrated spectrum analyzer for performing on-chip power spectrum measurements, includes a digital autocorrelator that includes an analog input for inputting analog signal samples from a chip, an analog-to-digital converter for converting the analog signal sampl... | 05/15/2007 |
| 7190155 | Test apparatus and testing method There is provided a test apparatus for testing a device-under-test, having a reference clock source for generating reference clock for controlling operations of the device-under-test, a clock regenerating circuit for generating, based on a phase adjusting signal to ... | 03/13/2007 |
| 7184714 | Frequency domain estimation of IQ imbalance in a wireless OFDM direct conversion receiver using loopback connection An OFDM transceiver has a transmitter, a receiver, and a loopback switch. The loopback switch configured is for selectively establishing a physical connection between an output terminal of the transmitter and an input terminal of the receiver. The transmitter is con... | 02/27/2007 |
| 7180442 | Target indentification method using cepstral coefficients A method of identifying an unknown target comprising creating a density function of cepstral coefficients for a known target; receiving a signal from the unknown target; transforming the signal from a time spectrum to a frequency spectrum using a Fourier transform; ... | 02/20/2007 |
| 7163435 | Real time monitoring of CMP pad conditioning process CMP pad conditioning processes have been monitored and controlled by detecting the vibrational spectrum of a sensor mounted on the conditioner support arm. An accelerometer is used as the detector so that vibrational velocity (which correlates with pad wear) can be ... | 01/16/2007 |
| 7126321 | Apparatus and method for measuring transmission delay time of a signal propagation path between printed circuit boards Transmission delay time measurement is performed on a signal propagation path between respective points of two printed circuit boards connected by a coaxial cable. Measurement is made of a frequency-domain response of the cable and a first time-domain response of th... | 10/24/2006 |
| 7123000 | Adjacent channel leakage power ratio measuring apparatus, channel power measuring apparatus method, program, and recording medium with recording the program The frequency of an adjacent channel signal is reduced by a down converter (12), wherein the signal (adjacent channel signal) in a predetermined band centered around the adjacent channel frequency passes through a band-pass filter (22). At this time, a... | 10/17/2006 |
| 7108578 | System and method for manufacturing magnetic heads Systems and methods for the manufacture of a magnetic head. A first embodiment provides an apparatus for the manufacture of a magnetic head comprising a feedback control loop to terminate lapping of the magnetic head responsive to achieving a target signal to noise ... | 09/19/2006 |
| 7103491 | Method of estimating parameters of time series data using fourier transform A method of estimating parameters of time series data using a Fourier transform is disclosed. The parameter estimation method of the present invention can directly estimate modes and parameters, indicating the characteristics of a dynamic system, on the basis of the... | 09/05/2006 |
| 7076711 | Automatic testing of microprocessor bus integrity Integrated circuit bus integrity may be verified without specialized test equipment. In a diagnostic mode, the integrated circuit may output a series of predetermined activation patterns onto the data bus to verify integrity of the data bus. Further bus verification... | 07/11/2006 |
| 7061219 | Independent measurement of complicated transfer functions A first test signal from a test signal source is provided to a spectrum analyzer to produce first measurement data. The test signal source is expressed by a first transfer function G(w) and the spectrum analyzer is expressed by second transfer function F(w). A secon... | 06/13/2006 |
| 7061221 | Reduced complexity transmission line and waveguide fault tester A four-port junction is substituted for a six-port junction in a frequency domain reflectometer, which reduces the parts count and therefore cost and size of the reflectometer while improving reliability. The frequency domain reflectometer can alternatively be used ... | 06/13/2006 |
| 7032195 | Noise suppression component selecting method and program In a method of selecting a suitable noise suppression component, an input signal to a digital circuit including a transmitter IC, a noise suppression filter, a transmission line, and a receiver IC is expanded by Fourier expansion so as to express the input signal in... | 04/18/2006 |
| 7027520 | Method and apparatus for simultaneously retrieving portions of a data stream from different channels An apparatus and method for simultaneously processing each of a plurality of carrier signals having data modulated thereon, wherein a complete data stream is formed by extracting at least portions of at least two of the modulated signals and combining the extracted ... | 04/11/2006 |
| 7016805 | Method and apparatus for analyzing a distribution A method, apparatus, and article of manufacture for analyzing a measurable distribution having random components and deterministic components. The method includes the steps of collecting data, constructing a probability density function based on the data such that t... | 03/21/2006 |
| 6997778 | Polishing apparatus A polishing apparatus comprises a polishing tool, a substrate holding member, and a sensor for detecting a failure of a substrate to be polished. ... | 02/14/2006 |
| 6998835 | Electromagnetic sensor system and method An electromagnetic sensor system. The system includes an electromagnetic excitable structure that generates an acoustic signal when irradiated with electromagnetic energy; an acoustic energy transducer sensor for generating a first output signal that represents the ... | 02/14/2006 |
| 6985824 | Frequency measuring device A frequency measuring device can measure the frequency of a noisy power system at high speed. The system voltage is measured at timings obtained by equally dividing one reference-wave period. Voltage vectors are calculated which have tip ends, each voltage vector co... | 01/10/2006 |
| 6971944 | Method and control system for improving CMP process by detecting and reacting to harmonic oscillation A method and control system for detecting harmonic oscillation in a chemical mechanical polishing process and reacting thereto, such as by taking steps to at least one of: 1) reduce or eliminate the harmonic oscillation; and 2) counter the noise which is associated ... | 12/06/2005 |
| 6959037 | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain correlation A system for determining characteristics associated with a communication channel includes a transmitter for transmitting a first signal via the communication channel. The system includes a receiver for receiving a second signal via the communication channel in respo... | 10/25/2005 |
| 6933714 | Method and apparatus for measuring the impedance of an electrical energy supply system The invention relates to a method and an apparatus for measuring the impedance of an energy supply system at a rated frequency by impressing a testing current (3) into the system and measuring (4) the resulting changes in a system current and a system ... | 08/23/2005 |
| 6920128 | TDMA packet data communication system A packet data communication system includes a control station and a plurality of mobile terminals that communicate on demand with the control station over a wireless link. The control station has a data port for receiving data packtets destined for the terminals, an... | 07/19/2005 |
| 6911827 | System and method of measuring low impedances A method comprises generating first and second current levels and measuring the first and second current levels. The method further comprises alternately generating the first and second current levels repeatedly to generate a periodic current waveform, and measuring... | 06/28/2005 |
