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1326results about How to "Accurate output" patented technology
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System and method for driving LED
ActiveUS7276861B1Reduce monetary costAccurate outputElectroluminescent light sourcesDc-dc conversionContinuous modeOff time
A system drives one or plurality of LEDs regulating their brightness by controlling LEDs average current or voltage. The system includes a switching power converter and an integrated digital regulator with at least one of electrical, thermal and optical feedbacks. The regulator is constructed as a hysteretic peak current mode controller for continuous mode of operation of the power converter. For discontinuous mode of operation of the power converter a pulse averaging sliding mode control is being used. Average LED current is measured by integrating LED pulse current at off time and hysteretically adjusting on time of the power switch. Input battery is protected from discharging at abnormally low impedance of the output.
Owner:CHEMTRON RES
Sports Sensor
ActiveUS20080284650A1Show efficiencyShow powerGymnastic exercisingPosition fixationGyroscopeAccelerometer
A data logger for a monitoring sports which includes an accelerometer, a gyro sensor to sense angular displacement, a GPS unit to sense position and velocity, a magnetometer to sense direction of movement, a heart rate monitor, and a controller programmed to manipulate the data and provide a display of the heart rate, speed, and other sport parameters. The data can be stored or transmitted to a remote computer for use by the coach. The device is useful in football codes, athletics, swimming, snow sports and cycling.
Owner:CATAPULT GRP INT
Sports sensor
ActiveUS8036826B2Accurate outputSimple mathematicsGymnastic exercisingPosition fixationGyroscopeAccelerometer
A data logger for a monitoring sports which includes an accelerometer, a gyro sensor to sense angular displacement, a GPS unit to sense position and velocity, a magnetometer to sense direction of movement, a heart rate monitor, and a controller programmed to manipulate the data and provide a display of the heart rate, speed, and other sport parameters. The data can be stored or transmitted to a remote computer for use by the coach. The device is useful in football codes, athletics, swimming, snow sports and cycling.
Owner:CATAPULT GRP INT
System and method for analysis of an opinion expressed in documents with regard to a particular topic
ActiveUS20100023311A1Accurate outputEasy to analyzeDigital data information retrievalSemantic analysisOpinion analysisDocument preparation
System and method for analysis of an opinion expressed in documents on a particular topic computes opinion strength on a continuous numeric scale, or qualitatively. A variety of opinion scoring techniques are plugged in to score opinion expressing words and sentences in documents. These scores are aggregated to measure the opinion intensity of documents. Multilingual opinion analysis is supported by capability to concurrently identify and visualize the opinion intensity expressed in documents in multiple languages. A multi-dimensional representation of the measured opinion intensity is generated which is agreeable with multi-lingual domain.
Owner:UNIV OF MARYLAND
System and method for bidirectional wireless power transfer
ActiveUS20150244176A1Reducing and eliminating power draw in powerThe process is simple and effectiveNear-field transmissionTransformersSelf drivenElectric power
The present invention relates to a wireless power supply system including a remote device capable of both transmitting and receiving power wirelessly. The remote device includes a self-driven synchronous rectifier. The wireless power supply system may also include a wireless power supply configured to enter an OFF state in which no power, or substantially no power, is drawn, and to wake from the OFF state in response to receiving power from a remote device.
Owner:PHILIPS IP VENTURES BV
Cardiac output measurement using dual oxygen sensors in right and left ventricles
InactiveUS7164948B2Easy to deployAvoiding excessive formationTransvascular endocardial electrodesCatheterMeasurement deviceCardiac pacemaker electrode
A pacemaker provides multi-chamber pacing with a pacing interval that can be programmed and adapted in response to cardiac output measurements for a given patient. In a typical embodiment, the pacemaker may provide pacing stimuli to both ventricles of a heart. In addition, the invention may include a measurement device that incorporates first and second blood oxygen saturation sensors for deployment in the left and right ventricle. The oxygen saturation sensors provide a differential measurement that can be used to calculate cardiac output in accordance with the Fick method. The oxygen saturation sensors may be carried by a common trans-septal lead that positions one of the sensors proximate the right ventricle and the other sensor proximate the left ventricle. Alternatively, the oxygen saturation sensors may be deployed via separate leads. Whether single or dual leads are used to carry the oxygen saturation sensors, a respective lead may optionally carry electrodes for sensing, pacing, or both.
Owner:MEDTRONIC INC
Method and system for fault tolerant media streaming over the internet
InactiveUS7296082B2Providing fault toleranceAccurate outputMultiple digital computer combinationsSelective content distributionFault toleranceComputer network
A replication process to provide fault tolerance for a streaming signal in a computer network. In one embodiment, the original or source signal is sent to several splitters which, in turn, each make copies of the signal and send the copies into a second layer of devices, which are referred to as “concentrators.” A given concentrator receives as input one or more copies of the source signal. In a preferred embodiment, a given concentrator receives two copies of the source signal from at least two different splitters. The concentrators process the incoming streaming signal copies, for example, by merging them into a single or composite copy of the original source signal according to a given processing algorithm. The output of a given concentrator may then be fed into a splitter, with the process then being repeated if desired to make an arbitrary large number of copies of the signal. At the end of the replication process, the output of a splitter or a concentrator is fed directly or indirectly to an end user. The replication process is fault-tolerant, and thus the end user's signal is not interrupted regardless of signal or equipment problems within the distribution mechanism.
Owner:AKAMAI TECH INC
Eye tracking human-machine interaction method and apparatus
InactiveCN101311882AAccurate outputSimple protocol for interactionInput/output for user-computer interactionCharacter and pattern recognitionComputer graphics (images)Man machine
The invention relates to a view line tracking man-machine interactive method, including: view line tracking information is collected and a view line focus position is obtained according to the view line tracking information; facial image information is collected and facial action is recognized according to the facial image information; a control command corresponding to the facial action is output according to the view line focus position. the invention also relates to a view line tracking man-machine interactive device which comprises a view line tracing processing unit which is used for the view line tracking operation, a facial action recognition unit for collecting the facial image information and recognizing the facial action according to the facial image information and a control command output unit which is respectively connected with the view line tracking processing unit and the facial action recognition unit and is used for outputting the control command corresponding to the facial action according to the view line focus position. the embodiment of the invention provides a non-contact view line tracking man-machine interactive method and a device with interaction protocols.
Owner:HUAWEI TECH CO LTD
Load measurement apparatus and methods utilizing torque sensitive link for pedal powered devices
InactiveUS20050178210A1Easy to installEasy maintenanceChain/belt transmissionForce measurementEngineeringSprocket
Apparatus and methods for use in measurement of applied load at a chainring assemblage of a pedal powered device are provided. The apparatus includes a link adapted for interposition between a chainring attachment site located on a conventional chainring mount, or spider, and a corresponding chainring attachment locale at a conventional chainring. The link has a geometry and / or material composition selected to accommodate measurement of load exhibited between the attachment site and the corresponding chainring attachment locale. Means for measuring the load exhibited thereby is associated with the link.
Owner:FORZA
Apparatus for light amplification
InactiveUS6483635B1Easy to operateSuppress any unwanted longitudinal modesLaser detailsLaser optical resonator constructionOptical cavityCommunications system
A system for reducing reflection of an optical system can reduce or eliminate reflection at facets of a semiconductor gain medium and can suppress natural longitudinal modes produced within the semiconductor gain medium. In combination with external feedback, the system can allow more precise wavelength control of the light output of a laser, thereby allowing the laser to be used in a dense wavelength division multiplexing system. The system employs a patterned relief surface disposed on a facet of a gain medium. The patterned relief surface may be a "motheye" pattern having a plurality of conical posts disposed on the surface of the facet. The system may be combined with conventional devices, such as a Bragg reflector or a microelectromechanical component, to further improve wavelength control of a resonant optical cavity, thereby improving the operation of optical communications systems.
Owner:CRX TECH LLC +1
Fault tolerant processing architecture
InactiveUS6938183B2Hinders its propagationRestoring normal computational behaviorError preventionRedundant data error correctionComputer scienceLogic circuitry
A fault tolerant processing circuit comprising at least three processor groupings, a synchronizing circuit and a fault logic circuit. Each of the processor groupings have a plurality of processor grouping inputs and a plurality of processor grouping outputs. The synchronizing circuit comprises a plurality of output synchronizers, wherein each output synchronizer communicates with a corresponding respective processor grouping for synchronizing the output of each processor grouping. A fault logic circuit communicates with the synchronizing circuit. The fault logic circuit comprises a fault detection circuit and a fault mask circuit. The fault logic circuit compares the plurality of processor group outputs to detect errors in any one of the plurality of processor group outputs. An error is detected when none of the at least three processor groups is in a majority of the processor groups. Upon a detected fault, the fault mask circuit masks the output of the respective processor grouping associated with a detected error and signals a detected error. The error signal latch is then used to reset the processor groupings.
Owner:THE BOEING CO
Scanning-type distance measuring apparatus
ActiveUS20110235018A1Easy to detectReliable detectionOptical rangefindersDevices using optical meansOptoelectronicsOptical path
A scanning-type distance measuring apparatus includes: an optical system 9 having a first deflecting member 9a that deflects measurement light output from a light transmitting unit 3 toward a space to be measured via an optical window, a light receiving lens 9c that condenses reflection light from an object R to be measured existing in the space to be measured, and a second deflecting member 9b that deflects the reflection light passed through the light receiving lens toward a light receiving unit 5 disposed to oppose the light transmitting unit 3; a scanning mechanism 4 that rotates the optical system 9 about a predetermined axis P; and an optical member 90 that outputs the measurement light deflected by the first deflecting member 9a from an incident light path Lc of the reflection light to the second deflecting member 9b.
Owner:HOKUYO AUTOMATIC CO
Device for heating and moistening a breathing gas
InactiveUS20060012057A1Precise vapor outputRelieve stressRespiratorsUsing liquid separation agentThin layerProduct gas
The present invention relates to a device for conditioning medical gas comprising a housing provided with an inlet for non treated medical gas and an outlet for the treated medical gas, wherein in said housing conditioning means are provided for the humidification and warming of said medical gas, comprising a rigid evaporating body, a water supply inlet and a heating device, characterized in that said rigid evaporating body and said heating device are arranged in a concentric way forming a space between them and wherein said water supply inlet is connected to the housing such that a thin layer of water is able to be inserted in said space between the heating device and the rigid evaporating body. The invention further relates to a method for the conditioning of medical gas, wherein said gas is humidified and warmed, comprising the steps of supplying through an inlet opening non treated medical gas, humidifying and warming said supplied gas through the action of evaporated water forced through a micro-porous rigid body by heating up a small layer of water.
Owner:ANTHONY
Electronic control unit having analog input signal
ActiveUS20100149007A1Short timeBig errorElectric signal transmission systemsPhysical parameters compensation/preventionLower limitMultiplexer
An analog input signal obtained from an analog sensor group 104A and first and second calibration voltages obtained by high-precision voltage-dividing resistors are successively selected by a multiplexer, digitally converted through an AD converter and then input to a microprocessor. The microprocessor calculates a collinear approximate coefficient based on the first and second calibration voltages in cooperation with a program memory, and corrects the digital conversion value to the analog input signal by using the approximate coefficient, thereby correcting a linear error of the conversion characteristic of the AD converter. In the calculation of the approximate coefficient, upper and lower limit check is executed on measurement values and calculation coefficients, and also plural calculation results are averaged to enhance the precision.
Owner:MITSUBISHI ELECTRIC CORP
Image forming apparatus and semiconductor laser modulation driving apparatus
InactiveUS20050089069A1Guaranteed high-speed signal transmissionReduce swing of signalLaser detailsVisual representatino by photographic printingColor imageLatent image
A color image forming apparatus produces a latent image on a photosensitive body based on a signal output from a scanning light detecting part in response to detection of scanning light; a semiconductor laser modulation signal generating part includes a clock generating part and a clock modulation part; a semiconductor laser and a semiconductor laser driving part are provided for each color of yellow, magenta, cyan and black; and further, a plurality of the semiconductor lasers are provided for at least one color of yellow, magenta, cyan and black.
Owner:RICOH KK
Drive force output apparatus, method for controlling same apparatus, and vehicle
InactiveUS20090131215A1Reliably securedEasy to controlHybrid vehiclesDC motor speed/torque controlDrive shaftElectric power
A drive force output apparatus has a controller that sets an upper limit of power allowed to be consumed by an auxiliary based on at least a reference power storage amount corresponding to the reference of the range in which the power storage amount of a power storage is monitored and controls a power generator, an electric motor, and the auxiliary such that drive force corresponding to target drive force is output to a drive shaft while the power consumed by the auxiliary remains equal to or smaller than the upper limit.
Owner:TOYOTA JIDOSHA KK
Load measurement apparatus and methods utilizing torque sensitive link for pedal powered devices
InactiveUS7047817B2Easy to installEasy maintenanceChain/belt transmissionForce measurementEngineeringChain link
Owner:FORZA
Polar and linear amplifier system
InactiveUS6987417B2Improve linearizationMitigate out-of-band emissionAmplifier modifications to reduce non-linear distortionPower amplifiersAudio power amplifierMode selection
Owner:NORTHROP GRUMMAN SYST CORP
GPSINS combination navigation method and system utilizing neural network algorithm to realize compensation and correction
InactiveCN106980133AAccurate outputNavigation by speed/acceleration measurementsBiological neural network modelsNetwork modelMachine learning
The invention discloses a GPSINS combination navigation method and system utilizing a neural network algorithm to realize compensation and correction. The method comprises steps that a combination navigation model based on a GPS and an inertial navigation module is constructed, a Kalman filter is designed to filter combination navigation data of the combination navigation model, and navigation error data of the inertial navigation module is outputted; in a normal GPS signal state, inertial navigation data is taken as input data of a training sample of a neural network model, output data of the navigation data after filtered by the Kalman filter is taken as output data of a training sample of a neural network module, and the neural network model is trained; in a GPS signal loss state, the trained neural network model is utilized to predict an output error of the inertial navigation module, and the predicted output error is further utilized to compensate and correct inertial navigation. The method is advantaged in that the GPSINS combination navigation model is compensated and corrected through utilizing the neural network algorithm, and the inertial navigation system is assisted by the neural network algorithm to output the accurate navigation data in the GPS signal loss state.
Owner:GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION
High-precision time interval measurement device
InactiveCN102621878AAccurate outputEasy to buildElectric unknown time interval measurementSpeed measurementPhysics
The invention discloses a high-precision time interval measurement device, which is used for reshaping signals generated by blocking devices by means of a signal conditioning module based on a phase-modulated high-precision time interval measurement method into square wave signals recognizable by an FPGA (field programmable gate array). In the FPGA, the square wave signals standing for start and stop are integrated into a pulse signal with a certain pulse width by a trigger. A phase-locked loop is constructed in the FPGA, multichannel clock signals with fixed phase differences are obtained after frequency multiplication, debounce and phase shift of an external clock, and the clock signals are used for driving an FPGA interior counter to perform pulse counting so as to obtain a group of count values. The count values are transmitted to a single chip microcomputer for computation by the FPGA, and computed results are transmitted to a display module to complete display of the time interval measurement values. The high-precision time interval measurement device realizes precise measurement and real-time display of time interval, principle errors are eliminated, monolithic integration and flexible extension in the FPGA are easy, and the device is used for speed measurement of high-speed movement.
Owner:XIAN MODERN CHEM RES INST
Shift register unit, method for driving the same, shift register and display device
ActiveUS20160064098A1Reduce the impactAccurate outputCathode-ray tube indicatorsDigital storageShift registerProcessor register
According to an embodiment of the present disclosure, a shift register unit may include: a first control module, configured to transmit a start signal to a first node; a second control module, configured to pull a potential of a second node to a potential different from a potential of the first node, under a control of a first clock signal; a carry output module, configured to output a carry signal according to the potential of the first node and the potential of the second node; and a shift output module, configured to output a shift signal according to the potential of the first node and the potential of the second node.
Owner:BOE TECH GRP CO LTD
Positioning and tracking method based on video monitor network
InactiveCN103747207ARapid positioningFast trackImage analysisClosed circuit television systemsVideo monitoringGround level
Owner:SHENZHEN INST OF ADVANCED TECH
Power output apparatus, hybrid vehicle having the same, and method of controlling the power output apparatus
InactiveUS8100207B2Accurate outputChange speedHybrid vehiclesElectric motor startersCouplingDrive shaft
Owner:TOYOTA JIDOSHA KK
Multifunctional environment-friendly and coating-saving wall painting machine
InactiveCN104120863AGuarantee the quality of paintingAvoid harmBuilding constructionsUltimate tensile strengthMechanical engineering
The invention relates to a multifunctional environment-friendly and coating-saving wall painting machine. The multifunctional environment-friendly and coating-saving wall painting machine comprises a base, a movement module, a wall painting module, a feeding module and a stirring module. The movement module comprises a lifting mechanism installed on the base. The lifting mechanism drives the wall painting module to move vertically. The wall painting module comprises a roller brush, a puttying plate, a polishing plate and a rotary locating mechanism. The rotary locating mechanism comprises a rotary plate, a locating pin and a reset spring. A mechanical arm and a rotating arm are arranged above the lifting mechanism, the rotating arm is hinged to the mechanical arm, and a tension spring is arranged between the rotating arm and the mechanical arm. The multifunctional environment-friendly and coating-saving wall painting machine can achieve integration of automatic stirring, feeding, puttying, polishing and painting, guarantee accurate discharging, replace workers to complete complex wall painting work high in labor intensity, improve the work efficiency, guarantee the wall painting quality, liberate labor force, avoid injury to the human body, solve the problem of waste caused by leakage of coatings, lower the decoration cost and reduce the environmental pollution.
Owner:WUHAN UNIV OF TECH
High resoution bio-impedance device
A method and apparatus for the non-invasive measurement of cardiac function. A signal is applied between a pair of electrodes on a patient. The signal delivers a constant alternating current at multiple simultaneous frequencies. A second pair of electrodes measures a voltage signal. The impedance at each frequency is obtained by demodulating the current signal and the voltage signal using techniques such as Fast Fourier Transform (FFT). The FFT gives a phase and amplitude which is converted to an impedance value. The impedance values are fitted to a theoretical frequency dependent impedance locus and the locus is extrapolated to obtain a value at zero frequency. The steps are repeated to obtain a time-varying plot of impedance and measures of cardiac function are calculated from the time-varying plot.
Owner:IMPEDANCE CARDIOLOGY SYST
High-precision integrated navigation positioning method for underwater glider
ActiveCN103033186ARemove coarse noiseImprove performanceNavigational calculation instrumentsNavigation by speed/acceleration measurementsRunge–Kutta methodUnderwater glider
The invention discloses a high-precision integrated navigation positioning method for an underwater glider. The method comprises the steps that output of an inertial measurement unit (IMU) is subjected to rough processing and fine processing; higher-precision data is obtained; data obtained by dead reckoning based on a Runge-Kutta method (RK4) is combined; adaptive Kalman filtering (AKF) and unscented Kalman filtering (UKF) are conducted; the filtered data is fed back to the IMU; an accumulative error of the IMU is corrected; and relatively accurate information such as position, speed and gesture is finally output. The autonomous navigation method for the underwater glider has the advantages of high precision, real-time performance, stability, and the like, so that a whole navigation system can stably operate at long endurance, high precision and low power consumption, the current position and gesture information of an underwater aircraft can be obtained rapidly and accurately, and navigation path and position parameters can be provided for the underwater aircraft.
Owner:SOUTHEAST UNIV
Power output apparatus, hybrid vehicle having the same, and method of controlling the power output apparatus
InactiveUS20100113213A1Improve driving performanceImprove fuel consumption performanceHybrid vehiclesEngine controllersCouplingDrive shaft
The hybrid vehicle transfers power between the two motors, releases a coupling between one of the motors and the drive shaft, adjusts the rotation speed of one of the motors which is released from the coupling to the drive shaft by the transmission so as to enable drive source element connection, and connects the clutch as well as cranks the engine by either one or the other motor when the engine is started while the clutch is released, the engine is stopped, both the motors are coupled to the drive shaft as well as at least one of the motors is caused to output power.
Owner:TOYOTA JIDOSHA KK
Grassland dry matter mass remote sensing estimating method
ActiveCN102393238APromote healthy and sustainable developmentMaintain ecological balanceWeighing apparatusData acquisitionRemote sensing application
The invention discloses a grassland dry matter mass remote sensing estimating method, which belongs to the field of remote sensing application. The method comprises the following steps of: collecting and processing field test data; downloading and processing Modis (Moderate Resolution Imaging Spectroradiometer) satellite data; analyzing and modeling the data and detecting the accuracy and the like. The method for establishing a ground spectrum model for predicating ground dry matter mass and correcting a Modis spectrum model through ground hyperspectral experiments is different from the method for directly predicating biomass liveweight by using NDVI (Normalized Difference Vegetation Index) data of the Modis remote sensing satellite in other like researches so that the grassland dry matter mass remote sensing estimating method is helpful for improving the predicating accuracy, is beneficial for scientific management and reasonable utilization of the grassland resources and has important practical significance in correct evaluation of the real productivity of the grassland and the sustainable use of the grass resources.
Owner:高吉喜
Semiconductor integrated circuit having a surface-emitting laser, manufacturing method of the same, and electronic equipment
InactiveUS20040184495A1Avoid lightAccurate outputSemiconductor laser structural detailsSolid-state devicesMiniaturizationEngineering
A semiconductor integrated circuit is provided having a surface-emitting laser that makes it possible to precisely monitor the amount of light emitted by the surface-emitting laser for a long period of time, to be miniaturized, and to be easily manufactured. A method to manufacture a semiconductor integrated circuit and electronic equipment is also provided. The semiconductor integrated circuit having a surface-emitting laser includes a transparent substrate, the surface-emitting laser composed of a micro tile-like element that is adhered to the transparent substrate, an integrated circuit chip that is flip-chip mounted on the transparent substrate and is arranged so as to cover the surface-emitting laser and a photodiode that is included in the integrated circuit chip and is arranged so as to face the surface-emitting laser.
Owner:SEIKO EPSON CORP
Power output apparatus, hybrid vehicle with the same, and method for controlling power output apparatus
InactiveUS20100012405A1Guaranteed normal transmissionIncrease powerHybrid vehiclesPower operated startersControl powerDrive shaft
There is provided a hybrid vehicle 20 which stops an engine 22 in a state in which a drive source element connection by a clutch C0 is released; a transmission 60 is used to couple only one of the motors MG1 and MG2 to a drive shaft 67; and one of the motors MG1 and MG2 is caused to output power; at this time, in order to start the engine 22, a rotation speed of the other one of the motors MG1 and MG2 which does not correspond to a current speed ratio γ and is not connected to the drive shaft 67 is adjusted so as to enable the drive source element connection; and the clutch C0 is connected as well as the engine 22 is cranked by the motor MG1 or MG2.
Owner:TOYOTA JIDOSHA KK
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