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103results about How to "Maximum sensitivity" patented technology
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Multi-axis joystick and transducer means therefore
InactiveUS20050162389A1Reduce noiseLow costProgramme controlManual control with multiple controlled membersJoystickTransducer
The invention relates to improved multi-axis joysticks and associated multi-axis optical displacement measurement means. The displacement measuring means may include one or more light emitters and one or more light detectors, preferably mounted in a planar hexagonal array. The relative position of an adjacent movable reflector assembly can be measured in six degrees of freedom by variations in detected light amplitude. Various ergonomic configurations of six axis joystick embodiments which may be facilitated by the compact design of the transducer means are disclosed. Means for dynamically adjusting coordinate transformations for construction machinery control are also disclosed.
Owner:OBERMEYER HENRY K +1
ESR1 and Cervical Cancer
InactiveUS20090023137A1High sensitivityAccurate diagnosisMicrobiological testing/measurementBiologyMethylation
The present invention provides methods and kits for detecting susceptibility to, or the incidence of, cervical cancer in a sample comprising determining the methylation status of the ESR1 gene, optionally as part of a panel of genes. Also provided are methods and kits which involve determining the expression levels of genes including the ESR1 gene in order to diagnose cervical cancer.
Owner:ONCOMETHYLOME SCI
Optical Multiwavelength Window Contamination Monitor for Optical Control Sensors and Systems
ActiveUS20090015824A1Minimize impactMaximum sensitivityOptically investigating flaws/contaminationOptical instrumentWavelength
A foreign-particle detection system for use with an optical instrument having a transmissive window with a first side and a second side includes a radiation source to emit a radiation signal, a diffusing reflector to diffusively spread the radiation signal emitted by the radiation source over the first side of the transmissive window, a radiation detector to detect, at the second side of the transmissive window, the diffusively spread radiation signal transmitted by the transmissive window, and to generate a detected radiation signal based on the detected diffusively spread radiation signal, and a computation module communicatively coupled to the radiation detector to detect a presence of foreign particles on at least one of the first side or the second side of the transmissive window based on at least the detected radiation signal.
Owner:JOHN FLUKE MFG CO INC
Echo cancellation in telephones with multiple microphones
InactiveUS20060147063A1Improve performanceReduce adverse effectsTwo-way loud-speaking telephone systemsTransmissionProximal pointEngineering
The present invention is directed to a telephone equipped with multiple microphones that provides improved performance during operation of the telephone in a speaker-phone mode. For example, the multiple microphones can be used to improve voice activity detection, which in turn, can improve echo cancellation. In addition, the multiple microphones can be configured as an adaptive microphone array and used to reduce the effects of (i) room reverberation, when a near-end user is speaking, and / or (ii) acoustic echo, when a far-end user is speaking.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
Method for curing substances by UV radiation, device for carrying out said method and ink cured by UV radiation
InactiveUS20120128890A1Increase powerImprove reaction speedLiquid surface applicatorsInksPhotochemistryRadiation
Owner:MIRCHEV VLADISLAV YURIEVICH
Method to package multiple MEMS sensors and actuators at different gases and cavity pressures
ActiveUS20140227816A1Increase dampingPerformanceDecorative surface effectsSemiconductor/solid-state device manufacturingCavity pressureMems sensors
A method for fabricating a multiple MEMS device. A semiconductor substrate having a first and second MEMS device, and an encapsulation wafer with a first cavity and a second cavity, which includes at least one channel, can be provided. The first MEMS can be encapsulated within the first cavity and the second MEMS device can be encapsulated within the second cavity. These devices can be encapsulated within a provided first encapsulation environment at a first air pressure, encapsulating the first MEMS device within the first cavity at the first air pressure. The second MEMS device within the second cavity can then be subjected to a provided second encapsulating environment at a second air pressure via the channel of the second cavity.
Owner:MOVELLA INC
Q-quenching super-regenerative receiver
ActiveUS20050069051A1Reduce radiated noiseLow costAmplitude-modulated carrier systemsDemodulator for amplitude-modulated oscillationsEngineeringQuenching
A super-regenerative receiver uses controlled Q-quenching and may limit the resonant tank circuit amplitude by loading the tank circuit as soon as regenerative oscillation is detected. An amplitude detector is coupled to the regenerative amplifier and controls a Q loading circuit coupled to the tank circuit of the regenerative amplifier. The amplitude detector turns on the Q loading circuit which then stops the regenerative amplifier from oscillating, and the Q-loading remains on for a brief time to insure that the regenerative amplifier has stopped oscillating. After the brief time, the Q loading circuit is turned off and the regenerative amplifier goes into oscillation again. This cycle repeats controllably over and over, resulting in a lower self-induced noise floor and improved received signal sensitivity. The super-regenerative receiver may be used in the very low frequency (VLF), low frequency (LF), medium frequency (MF), high frequency (HF), very high frequency (VHF) and super high frequency (SHF) ranges to receive continuous wave (CW), amplitude modulated (AM) and frequency modulated (FM) radio signals.
Owner:MICROCHIP TECH INC
Intrusion detection system for use on single mode optical fiber using a simplified polarimeter
ActiveUS20060153491A1Overcome limitationsMaximum sensitivityElectromagnetic transmission optical aspectsLight polarisation measurementPolarimeterPolarizer
A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
Owner:NETWORK INTEGRITY SYST
Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions
ActiveUS7092586B2Maximum sensitivityRapid location and interceptionCoupling light guidesFibre mechanical structuresFiberSpectral width
Owner:NETWORK INTEGRITY SYST
Fluidically-assisted sensor systems for fast sensing of chemical and biological substances
InactiveUS20100229658A1Easy to superviseKeep for a long timeAdditive manufacturing apparatusWithdrawing sample devicesEffective surfaceInhalation
The present invention is directed to devices and methods in which one or more miniature synthetic jet actuators are integrated with a chemical fluidic sensor (ChemFET) to effect inhalation and exhalation of ambient gas samples and induce small scale mixing at the surface of the sensor. The fluidically integrated jet transports ambient gas or liquid into the jet / sensor assembly through integrated gas or liquid channels, impinges the sample gas or liquid on the sensing element, and finally ejects the sample gas or liquid back into the ambient gas or liquid. The response of the sensor in the presence of the active jet is compared to its response when the jet is inactive. The jet actuator directs entrained ambient gas or liquid toward the active surface of the sensor, and the impingement of sample gas or liquid onto the surface of the sensor results in faster response time. Other embodiments are also claimed and described.
Owner:GEORGIA TECH RES CORP
Intrusion detection system for use on single mode optical fiber using a storage register for data
ActiveUS7142737B1Overcome limitationsMaximum sensitivityReflectometers dealing with polarizationCoupling light guidesProcessor registerPolarimeter
A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
Owner:NETWORK INTEGRITY SYST
Steerable radial line slot antenna
InactiveUS7233297B1Improve efficiencyMaximum sensitivityIndividually energised antenna arraysSlot antennasBeam angleDielectric
A steerable antenna comprising an array of T-shaped slots. The location of the slots is moved to define an array of ring- or spiral-patterned phase constant regions. Distortions or contractions of the pattern occur by repositioning some or all of the slots forming the array. The antenna also comprises an intermediate insulating layer and a lower plate. The insulating layer is formed by a deformable dielectric medium. Deformation of the dielectric medium allows the beam angle to be altered.
Owner:HRL LAB
Monolithic all-semiconductor optically addressed spatial light modulator based on low-photoconductive semiconductors
InactiveUS6025950AImprove isolationHigh resolutionNanoopticsActive addressable light modulatorSpatial light modulatorSemiconductor materials
An optically addressed spatial light modulator (OASLM), and an optical pattern processor employing the same. An embodiment of the OASLM includes a transparent electrode; a buffer layer; a detector region; and a modulator region, wherein the detector and modulator regions are optically isolated and resist electron movement therebetween. In one embodiment, the detector region includes a photoconductive semiconductor region with a higher band gap than the modulator region and the modulator region comprises a low-photoconductive semiconductor material.
Owner:CIENA
Burst processor method and apparatus
InactiveUS20070117515A1Increased data obtainmentLarge dynamic rangeReceivers monitoringBurst transmissionAudio power amplifier
A system and method for processing a wireless burst transmission. A sensor measures the energy of the wireless burst transmission. A first amplifier is in electrical communication with the sensor. A second amplifier is in electronic communication with the sensor. The first amplifier and the second amplifier are initially enabled and are selectively disabled based on an energy measurement from the sensor.
Owner:SR TECH
Intrusion detection and location system for use on multimode fiber optic cable
ActiveUS20070133922A1Overcome limitationsMaximum sensitivityCoupling light guidesElectromagnetic transmissionFiberSpectral width
A telecommunications multimode optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. Pulses are injected using a launch arrangement which generates a narrow spectral width, under-filled, non-uniform mode field power distribution in the multimode optical fiber and Fresnel reflections and Rayleigh backscattering from the pulse are detected at the transmit end to monitor the modal power distribution in the fiber which changes on manipulation of the fiber. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a modal power distribution detection system which includes an optical coupler to tap off a portion of the light which contains the higher order signal modes.
Owner:NETWORK INTEGRITY SYST
Flourescent organic nanofibrils as sensory materials for explosives detection
ActiveUS20090233374A1Efficiently sensedEfficiently quenchedAnalysis using chemical indicatorsWeather/light/corrosion resistanceFiberFluorescence
The present invention relates to a class of fluorescent, organic nanofibrils, and particularly the films comprising entangled piling of these nanofibrils exhibiting effective quenching of their fluorescence upon exposure the vapor of explosives. The invention also relates to a sensor and a method for sensing the explosives vapor and other volatile organic compounds, including the explosives taggants through the modulation of the fluorescence of the nanofibril film and the electrical conductivity of the nanofibrils. The invention also relates to a development of synthetic methods, protocols and techniques that leads to production of various arylene-ethynylene macrocycle (AEM) molecules, which consist of a shape-persistent, toroidal scaffold in planar conformation, with minimal ring strain and highly tunable ring sizes (from 0.5 nm to above 10 nm). The invention also relates to an approach to optimization of the one-dimensional molecular arrangement along the long axis of the nanofibril, which provides increased exciton (excited state) migration (via cofacial intermolecular electronic coupling) and charge transport (via pi-electronic delocalization). A combination of long-range exciton migration and efficient charge transport makes the nanofibrils ideal as sensory materials for detecting explosives and other volatile organic compounds through both optical and electrical sensing mechanisms.
Owner:SOUTHERN ILLINOIS UNIVERSITY
System and process for pulsed multiple reaction monitoring
InactiveUS20110248160A1Reduces background ion noiseIncrease amplitudeStability-of-path spectrometersIsotope separationSelected reaction monitoringPulse injection
A new pulsed multiple reaction monitoring process and system are disclosed that uses a pulsed ion injection mode for use in conjunction with triple-quadrupole instruments. The pulsed injection mode approach reduces background ion noise at the detector, increases amplitude of the ion signal, and includes a unity duty cycle that provides a significant sensitivity increase for reliable quantitation of proteins / peptides present at attomole levels in highly complex biological mixtures.
Owner:BATTELLE MEMORIAL INST
Contact-less probe of semiconductor wafers
InactiveUS6300785B1MeasureMaximum sensitivityIndividual semiconductor device testingBatteriesElectric generatorRadiofrequency energy
A device, having circuits formed thereon, comprises a circuit including a frequency generator for generating a detectable radio frequency energy when powered and a power generator, coupled to the frequency generator, for generating power when exposed to light.
Owner:IBM CORP
Magnetic field sensor system with a biasing magnet producing a spatially symmetric magnetic field within a plane being defined by magnetoresistive sensor elements
ActiveUS20140084906A1High sensitivityAvoid saturationMagnetic-field-controlled resistorsSolid-state devicesSensor systemMagnet
A magnetic field sensor system for measuring rotational movements of a shaft is disclosed. The sensor system includes a biasing magnet configured for generating a biasing magnetic field and a magnetic wheel having a wheel axis and a circumferential surface which comprises a regular structure of teeth and gaps arranged in an alternating manner. The magnetic wheel is attachable to the shaft and is magnetizable by the biasing magnetic field. A magnetoresistive sensor arrangement comprising four magnetoresistive sensor elements being connected with each other in a Wheatstone bridge, respectively two of the magnetoresistive sensor elements being assigned to one half bridge of the Wheatstone bridge. The four magnetoresistive sensor elements are arranged within an x-y plane.
Owner:NXP BV
Contact-less probe of semiconductor wafers
InactiveUS6455766B1MeasureMaximum sensitivityPV power plantsSolid-state devicesEngineeringElectric power
Owner:INT BUSINESS MASCH CORP
Automated chemiluminescence analyzer
InactiveUS6716391B1Improve light collectionMaximum sensitivityChemiluminescene/bioluminescenceLuminescent dosimetersChemical reactorEngineering
An automated chemiluminescence analyzer. A multiport selection valve has a common aspiration port for carrier solvent, sample, and reagent. A bi-directional pump is connected to the selection valve. A chemiluminescence cell is positioned between the selection valve and a T-block. One end of the cell is connected to the common port of the selection valve, and the other end is connected to the T-block. The T-block has a port connected to the pump, another port which communicates with the detector, and a third port connected to the other end of the cell. This unique arrangement enables the chemiluminescence cell to function as a chemical reactor, thus eliminating any delay between initiation and detection of emitted radiation, so that very rapid reactions can be viewed and high sensitivity attained.
Owner:GLOBAL FIA
Intrusion detection and location system for use on multimode fiber optic cable
ActiveUS7333681B2Overcome limitationsMaximum sensitivityCoupling light guidesElectromagnetic transmissionFiberSpectral width
A telecommunications multimode optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. Pulses are injected using a launch arrangement which generates a narrow spectral width, under-filled, non-uniform mode field power distribution in the multimode optical fiber and Fresnel reflections and Rayleigh backscattering from the pulse are detected at the transmit end to monitor the modal power distribution in the fiber which changes on manipulation of the fiber. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a modal power distribution detection system which includes an optical coupler to tap off a portion of the light which contains the higher order signal modes.
Owner:NETWORK INTEGRITY SYST
Intrusion detection system for use on single mode optical fiber using a polarimeter
ActiveUS7206469B2Overcome limitationsMaximum sensitivityNon-electrical signal transmission systemsElectromagnetic transmission optical aspectsProcessor registerPolarimeter
A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
Owner:NETWORK INTEGRITY SYST
Resonator optical gyroscope having input beam modulation optimized for high sensitivity and low bias
ActiveUS20110037985A1Maximum sensitivityAvoid instabilitySpeed measurement using gyroscopic effectsSagnac effect gyrometersOptical gyroscopeLight beam
Systems and methods for optimizing input beam modulation for high gyro sensitivity and low bias errors. The present invention is a resonator optical gyroscope having an optimized phase-modulation amplitude (frequency) for a selected modulation frequency (amplitude) that maximizes the gyro signal-to-noise (S / N) sensitivity. For selected values of the phase modulation amplitude, the polarization cross-coupling induced intensity modulation can be nulled. By setting the phase modulation amplitudes substantially close to these nulling points (e.g. M=3.832 or 7.016 radians, which causes the first order Bessel function to be zero J1(M)=0) and then optimizing the modulation frequency, the intensity modulation induced bias is reduced to zero and gyro S / N sensitivity is maximized.
Owner:HONEYWELL INT INC
Receiving device
InactiveUS20100014618A1Improves conventional disadvantagePrevents reception errorAmplitude-modulated carrier systemsRadio transmissionEngineeringPower consumption
When performing switching control of reception modes trading off reception sensitivity against power consumption in a reception environment, the receiving apparatus and control method of the present invention perform state transition without a reception error occurring due to switching control with the aid of a reception mode in which an intermediate reception performance is provided. The present invention is particularly useful to balance the reception performance with the battery duration in a battery-powered, portable receiving terminal such as a television receiver for a mobile terminal.
Owner:PANASONIC CORP
Collapsed mode capacitive sensor
InactiveUS20120133005A1Function increaseEnhanced signalFluid pressure measurement by electric/magnetic elementsSemiconductor/solid-state device manufacturingCollapse modeEngineering
Owner:NXP BV
Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions
ActiveUS20060002650A1Rapid location and interceptionMaximum sensitivityCoupling light guidesFibre mechanical structuresFiber-optic communicationIntrusion detection system
A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the cable. A small portion of the higher order signal modes arriving at the remote end of the cable is sampled by use of a coupler and monitored for transient changes in the mode field power distribution. The power distribution changes with physical disturbance of the cable. When those changes are detected as being characteristic of fiber intrusion, the system activates an alarm. This method can sense and alarm any attempt to access the optical fibers in a fiber optic communication cable. In preferred embodiments, the active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and / or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.
Owner:NETWORK INTEGRITY SYST
Intrusion detection system for use on single mode optical fiber using a polarimeter
ActiveUS20060153520A1Overcome limitationsMaximum sensitivityElectromagnetic transmission optical aspectsOptical light guidesPolarimeterPolarizer
A telecommunications optical fiber is secured against intrusion by detecting manipulation of the optical fiber prior to an intrusion event. This can be used in a non-locating system where the detection end is opposite the transmit end or in a locating system which uses Fresnel reflections and Rayleigh backscattering to the transmit end to detect and then locate the motion. The Rayleigh backscattering time sliced data can be stored in a register until an intrusion event is detected. The detection is carried out by a polarization detection system which includes an optical splitter which is manufactured in simplified form for economic construction. This uses a non-calibrated splitter and less than all four of the Stokes parameters. It can use a polarimeter type function limited to linear and circular polarization or two linear polarizers at 90 degrees.
Owner:NETWORK INTEGRITY SYST
Cryogenic fiber optic temperature sensor and method of manufacturing the same
InactiveUS20110280280A1Practical level of sensitivityEasy to manufactureRadiation pyrometryOptical fibre with multilayer core/claddingImage resolutionThermal expansion
This invention teaches the fiber optic sensors temperature sensors for cryogenic temperature range with improved sensitivity and resolution, and method of making said sensors. In more detail, the present invention is related to enhancement of temperature sensitivity of fiber optic temperature sensors at cryogenic temperatures by utilizing nanomaterials with a thermal expansion coefficient that is smaller than the thermal expansion coefficient of the optical fiber but larger in absolute value than the thermal expansion coefficient of the optical fiber at least over a range of temperatures.
Owner:KOCHERGIN VLADIMIR
Intrusion detection system for a multimode optical fiber using a bulk optical wavelength division multiplexer for maintaining modal power distribution
ActiveUS7403674B2Maximum sensitivityRapid location and interceptionCoupling light guidesTransmission monitoringPhysicsLight spectrum
Owner:NETWORK INTEGRITY SYST
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