Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8179118 | Wide-bandwidth spectrum analysis of transient signals using a real-time spectrum analyzer A system and method for performing wide-band spectral analysis of transient signals using a real-time spectrum analyzer (RTSA). A frequency window is selected for RTSA acquisition, the frequency window being narrower in bandwidth than the frequency spectrum of inter... | 05/15/2012 |
| 8125213 | System for extraction and analysis of significant radioelectric signals Embodiments of the invention relate to a system for extracting and analyzing radioelectric signals of interest. It includes an integer number N of channels. Each channel Vi includes a receiver linked to an analog signals digital acquisition device deliver... | 02/28/2012 |
| 7915884 | Importation of virtual signals into electronic test equipment to facilitate testing of an electronic component Electronic component validation testing is facilitated by a method, system and program product which allows the importation of virtual signals derived from simulation verification testing of the electronic component design into electronic test equipment employed dur... | 03/29/2011 |
| 7486067 | Real-time device characterization and analysis A measurement system for determining at least one characteristic of a device under test (DUT) at at least one frequency is described. The measurement system includes a network analyzer being in connection at least with a first source via a first connector and a seco... | 02/03/2009 |
| 7439748 | Method and apparatus for measuring high-frequency electrical characteristics of electronic device, and method for calibrating apparatus for measuring high-frequency electrical characteristics A signal conductor whose first end is an open end, and a ground conductor are connected to associated measurement ports of a network analyzer. A short standard is connected between the signal conductor and the ground conductor at least three points in the longitudin... | 10/21/2008 |
| 7414411 | Signal analysis system and calibration method for multiple signal probes A method and apparatus adapted to calibrate signal path of a signal analysis system such that loading effects of additional probes are substantially removed from the measurement. A signal under test from a device under test is coupled to a test probe and used with s... | 08/19/2008 |
| 7408336 | Importation of virtual signals into electronic test equipment to facilitate testing of an electronic component Electronic component validation testing is facilitated by a method, system and program product which allows the importation of virtual signals derived from simulation verification testing of the electronic component design into electronic test equipment employed dur... | 08/05/2008 |
| 7348784 | Error factor acquisition device, method, program, and recording medium A measurement system for circuit parameters of a device under test (DUT) that reduces the number of attachments and detachments of calibration kits. An error factor acquisition device includes a first calibrator connected to ports of a network analyzer that has a fi... | 03/25/2008 |
| 7304468 | Method and apparatus for detecting minute oscillation and WiBro repeater having the same Disclosed are a method and apparatus for detecting minute oscillation in a WiBro repeater, and the WiBro repeater having the same. The method of detecting minute oscillation in a WiBro repeater includes: calculating an autocorrelation value of an input signal inputt... | 12/04/2007 |
| 7304469 | Adaptive method used to overcome channel to channel isolation Selectable attenuators are used in the reference and test paths of a VNA, with attenuation automatically inserted or deleted when the Device Under Test (DUT) attenuation reaches predetermined thresholds. Attenuation in the reference channel is removed when the signa... | 12/04/2007 |
| 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 |
| 7282903 | Longitudinal balance measuring bridge circuit A longitudinal balance measuring bridge circuit includes a common mode signal injection circuit in the form of a center tapped, 4:1 balanced matching transformer. The signal injection circuit is coupleable to an item under test (IUT) and to a source of common mode s... | 10/16/2007 |
| 7276892 | Resonator based spectrum analyzer and method A spectrum analyzer includes an array of frequency-selective bulk acoustic wave (BAW) resonators each tuned to a predetermined different resonant frequency. The spectrum analyzer further includes a broadband BAW resonator that generates acoustic energy when connecte... | 10/02/2007 |
| 7271576 | Hand held antenna/network impedance analyzer A handheld portable battery powered digital antenna and/or network analyzer which derives complex impedance values at a given frequency includes an internal direct digital synthesis generator and provides software-defined multiple operating modes and real time graph... | 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 |
| 7236900 | Three dimensional correlated data display A method and apparatus for synchronizing presentation of multi-domain measurements using actual or quasi 3-D representation. The synchronization between data streams acquired in different measurement domains is performed by using timestamps, a common trigger event, ... | 06/26/2007 |
| 7236901 | Digital broadband frequency measurement The present invention relates to a device and method that digitally replicates the analog processing that is normally associated with an instantaneous frequency measurement device. Specifically, the present relates to a digital frequency measurement device comprisin... | 06/26/2007 |
| 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 |
| 7218090 | Passive radio frequency power spectrum analyzer A spectrum analyzer includes a resonator board that in turn has a substrate and a plurality of resonators. Each resonator may include a first segment that includes a first segment discontinuity and that may also define a boundary and a second segment that has a seco... | 05/15/2007 |
| 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 |
| 7199595 | Fluid quality control using broad spectrum impedance spectroscopy A system and method for monitoring and controlling the properties of fluids is disclosed. The inventive concept employs impedance spectroscopy (IS) measurements, and is suitable for real-time, in situ, monitoring and quality control operations, such as quality contr... | 04/03/2007 |
| 7185315 | Graphical feedback of disparities in target designs in graphical development environment An apparatus, program product and method visually represent the disparities between a target design such as a DSP program design and a reference system in connection with the display of a graphical representation of the design, specifically in association with one o... | 02/27/2007 |
| 7124043 | Spectrum analyzer with phase noise compensation A spectrum analyzer with a compensation circuitry for prevention of measurement accuracy deterioration due to local oscillators phase noise. ... | 10/17/2006 |
| 7120546 | Integrated spectrum analyzer for tuners A scheme to provide a spectral view of the signals present at the customer premises equipment by the network operator and includes a digital signal processor (DSP) or other signal processing apparatus integrated into a customer premises equipment (CPE) tuner in whic... | 10/10/2006 |
| 7075324 | Method and device for testing semiconductor laser In testing a distributed feedback semiconductor laser with a grating having a phase shift part, a spectrum of the distributed feedback semiconductor laser is measured. A difference between an intensity of a side mode at a high-frequency-wave side of a main mode and ... | 07/11/2006 |
| 7076382 | Method of measuring the effective directivity and/or residual system port impedance match of a system-calibrated vector network analyser To measure the effective directivity and/or the effective source port match of a test port of a system-calibrated vector network analyser, a precision air line short-circuited at the outlet is connected, and the complex reflection coefficient is measured at the inle... | 07/11/2006 |
| 7061220 | Passive radio frequency power spectrum analyzer A spectrum analyzer includes a resonator board that in turn has a substrate and a plurality of resonators. Each resonator may include a first segment that includes a first segment discontinuity and that may also define a boundary and a second segment that has a seco... | 06/13/2006 |
| 7049831 | Fluid quality control using broad spectrum impedance spectroscopy A system and method for monitoring and controlling the properties of fluids is disclosed. The inventive concept employs impedance spectroscopy (IS) measurements, and is suitable for real-time, in situ, monitoring and quality control operations, such as quality contr... | 05/23/2006 |
| 7035324 | Phase-noise measurement with compensation for phase noise contributed by spectrum analyzer A method and apparatus compensates for phase noise added by a spectrum analyzer from phase noise measurements of a signal under test (SUT) taken by the spectrum analyzer. The method comprises the steps of measuring the phase noise of the SUT, determining the added p... | 04/25/2006 |
| 7034632 | Multi-tuner receivers with cross talk reduction Multi-tuner receivers with cross talk reduction are disclosed. In one embodiment, a multi-tuner receiver with cross talk reduction includes a low noise amplifier, a set of interstage filters and a set of corresponding tuners. In an alternative embodiment, a multi-tu... | 04/25/2006 |
| 7019536 | Multiport calibration simplification using the “unknown thru” method In one embodiment, a method of calibrating a multi-port vector network analyzer (VNA) includes (i) performing two-port calibrations on pairs of ports to determine forward and reverse systematic error terms associated with each pair of ports, wherein the pairs of por... | 03/28/2006 |
| 7019509 | Digital envelope detector A digital envelope detector (consisting of both hardware and software) that provides accurate measurements of changes of peak values of an AC signal (these peak values constitute the envelope of a signal). Such accurate envelope measurements are required, e.g., to o... | 03/28/2006 |
| 7006092 | Method and apparatus for representing complex vector data A method and apparatus for representing a complex vector signal by determining representative coordinates for the complex vector signal, wherein at least some of the determined representative coordinates are associated with corresponding reference coordinates; assoc... | 02/28/2006 |
| 6995553 | User interface for operating upon an eye diagram to find optimum sampling parameters for a receiver Measurements for an eye diagram of a signal of interest are placed in a data structure that is examined to locate an eye opening of interest. The eye opening of interest has already been, or is subsequently, normalized into figure of merit units related to the opera... | 02/07/2006 |
| 6995571 | Vector network analyzer mixer calibration using the unknown thru calibration In one embodiment, a method comprises applying a stimulus signal to a reference frequency translation device (FTD) by a vector network analyzer during a calibration mode, wherein the reference FTD possesses equal conversion efficiency in forward and reverse directio... | 02/07/2006 |
| 6995558 | System and method for characterizing a sample by low-frequency spectra A method and apparatus for interrogating a sample that exhibits molecular rotation includes placing the sample in a container having both magnetic and electromagnetic shielding, where Gaussian noise is injected into the sample. An electromagnetic time-domain signal ... | 02/07/2006 |
| 6989680 | Detection of coolant contamination in lubricating fluids An impedance spectroscopy technique and system for detecting in real time engine coolant contamination in lubricant. A probe is disposed in the lubricant and the probe excited with an a.c. voltage frequency sweep over a selected frequency range. The current and curr... | 01/24/2006 |
| 6984986 | Situ fluid condition monitoring A database is compiled of values of the frequency fNM corresponding to the minimum reactance Z″MIN (Nyquist minimum) versus temperature TL over a selected range of temperatures for a probe immersed in a sample of the fluid to be mo... | 01/10/2006 |
| 6980915 | Phase noise compensation for spectral measurements A system and method compensate for phase noise of a spectrum analyzer based on an established model of the phase noise that accommodates a variety of operating states of the spectrum analyzer. The model is used to form an array that is applied to extract an output s... | 12/27/2005 |
