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59results about How to "Automatically calibrating" patented technology
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Display illumination system and method
InactiveUS20080218501A1Improve abilitiesImprove image qualityCathode-ray tube indicatorsInput/output processes for data processingHead-up displayGraphics
The present invention provides automatic adjustments to an image presentation based upon changes in ambient light. The adjustments can be made to the back-lighting and / or the pixel data. The ambient lighting can be measured by a variety of sensors (e.g., a digital camera) from a variety of orientations. For example, the sensor can be directed away from the display (e.g., towards the user) or the sensor can be directed towards the display (e.g., from an angle comparable to the users view). In one exemplary implementation a graphics control system utilizes real time ambient light sampling input to calibrate a back-light illumination level and / or pixel illumination levels. The present invention can be implemented in a variety of devices (e.g., laptop, PDA, cell phone, headsup display, etc.).
Owner:DIAMOND MICHAEL B
Method and apparatus for calibrating an image capturing device, and a method and apparatus for outputting image frames from sequentially captured image frames with compensation for image capture device offset
ActiveUS7949486B2Accurate CalibrationAutomatically calibratingTelevision system detailsImage enhancementRest positionIn vehicle
A camera (17) mounted on a rear view minor housing (5) of a vehicle (1), which captures a plan view image of the ground on one side of the vehicle for display on an in-vehicle visual display unit (13) is calibrated to correct for offset of the camera (17) from an ideal position. During calibration an image of a reference point (34) on the vehicle (1) is captured as the mirror housing (5) is swiveled from a rest position to an operative position. The offset of the actual position of the image of the reference point in the captured image from its ideal position is computed, and a look-up table is prepared, which indicates the position at which pixels of subsequently captured image frames should be located to produce image frames with offset correction.
Owner:CONNAUGHT ELECTRONICS
Method for automatically calibrating the frequency range of a PLL and associated PLL capable of automatic calibration
InactiveUS7047146B2Automatically calibratingPulse automatic controlElectrical measurementsLoop filterMeasure duration
A PLL includes a loop filter for accumulating charge to generate a loop-filter voltage and a VCO having a plurality of frequency ranges. The VCO receives the loop-filter voltage and generates an output signal having a frequency according to the loop-filter voltage and a currently selected VCO frequency range. During PLL calibration, the loop-filter is connected to a constant voltage source; the PLL feedback signal is synchronized with the reference signal; a linear search, a binary search, or a memory lookup is used to find a first and a second VCO frequency range; first and second time durations are measured for the time durations between the second rising edges of the reference signal and the PLL feedback signal for the two VCO frequency ranges, and the optimal VCO frequency range is determined by setting the VCO frequency range to be the VCO frequency range having the shortest measured time duration.
Owner:AIROHA TECHNOLOGY CORPORATION
System and method for automated calibration of a fuel flow meter in a fuel dispenser
InactiveUS20080295568A1Reduce expensesMany calibrationLiquid transferring devicesTesting/calibration of speed/acceleration/shock measurement devicesEngineeringComputer program
Methods, systems, and computer program products for using a reference meter to provide automated calibration for a fuel dispenser are disclosed. According to one method, first historical metering data associated with a fuel flow meter and second historical metering data associated with a reference meter are maintained within a memory. The first historical metering data is compared with the second historical metering data. It is determined whether a difference exists between the first historical metering data and the second historical metering data that can be corrected by calibration of the fuel flow meter. In response to determining that a difference exists between the first historical metering data and the second historical metering data that can be corrected by calibration of the fuel flow meter, an automated calibration of the fuel flow meter is performed.
Owner:GILBARCO
Method of printing calibration pattern and printer
InactiveUS20010004284A1Reduce wasteAutomatically calibratingProjectorsTypewritersImage recordingEngineering
A printer prints a calibration pattern on a leading end portion of a roll of recording paper when the recording paper is loaded in the printer. A cutter cuts the leading end portion off the recording sheet so as to make an end edge rectangular to side edges of the recording sheet. A photometric device measures densities of the printed calibration pattern, and a system controller derives correction values for correcting density or color from the measured densities. After the calibration process, an image is printed in an image recording area on the recording paper following the leading end portion. For a printer that prints an image on a cut sheet recording paper, a calibration pattern is printed on a margin outside an image recording area. After densities of the calibration pattern are measured, the margin with the calibration pattern is cut off the recording paper.
Owner:FUJIFILM CORP +1
Information processing system, information processing apparatus, and information processing method
InactiveUS20060291014A1Automatically calibratingSimple configurationTelevision system scanning detailsProjectorsProjection imageInformation handling system
An information processing system includes a projection unit that projects at least image data for calibration, an image data capturing unit that captures projection image data projected by the projection unit, a specifying unit that specifies positions of points to be calibrated with the image data captured by the image data capturing unit, the positions of the points to be calibrated representing a shape of the image data for calibration, a calculation unit that calculates parameters to transform the positions of the points to be calibrated on to the positions of reference points, and a transformation unit that transforms the image data captured by the image data capturing unit with the parameters.
Owner:FUJIFILM BUSINESS INNOVATION CORP
Method to calibrate an optical array, method to display a periodic calibration pattern and a computer program product
InactiveUS20150243030A1Optimize locationSimple processImage enhancementImage analysisPattern recognitionDisplay device
A method is provided to calibrate an optical array consisting of an image detector and an optical imaging unit to depict a measurement volume on the image detector. At least one image of a periodic calibration pattern within a measurement volume is recorded by the optical array and depicted on a display. The calibration pattern has pattern structure units that differ in respect of at least one pattern structure feature, and the pattern scale that is representative of sizes of the pattern structure units is variable. The method correlates positions of the recorded calibration pattern points with image points on which they are displayed. At least one of the pattern structure units is depicted with an optically differentiable auxiliary unit that depends on the current pattern scale, such that the pattern scale can be determined from the depiction features of at least one depicted auxiliary unit.
Owner:LAVISION
System and method for automatically calibrating a temperature sensor
ActiveUS20070014329A1Automatically calibratingThermometers using electric/magnetic elementsUsing electrical meansElectrical resistance and conductanceEngineering
There is provided a system and method for automatically calibrating a temperature sensor. More specifically, there is provided a system comprising a temperature sensor comprising a first resistance configured to indicate a temperature of the temperature sensor and a second resistance, in series with the first resistor, wherein the second resistance is adjustable to calibrate the first resistance, and a calibration circuit, coupled to the temperature sensor and configured to automatically calibrate the first resistance.
Owner:MICRON TECH INC
Method of printing calibration pattern and printer
InactiveUS6624876B2Reduce wasteAutomatically calibratingProjectorsTypewritersImage recordingEngineering
A printer prints a calibration pattern on a leading end portion of a roll of recording paper when the recording paper is loaded in the printer. A cutter cuts the leading end portion off the recording sheet so as to make an end edge rectangular to side edges of the recording sheet. A photometric device measures densities of the printed calibration pattern, and a system controller derives correction values for correcting density or color from the measured densities. After the calibration process, an image is printed in an image recording area on the recording paper following the leading end portion. For a printer that prints an image on a cut sheet recording paper, a calibration pattern is printed on a margin outside an image recording area. After densities of the calibration pattern are measured, the margin with the calibration pattern is cut off the recording paper.
Owner:FUJIFILM CORP +1
Feedback control for modulating gas burner
ActiveUS20060105279A1Maintain accuracyLarge signalFuel supply regulationCombustion ventilatorsClosed loop feedbackControl system
A modulating gas burner control system using closed loop feedback from a flame rod which provides a signal that varies with gas pressure and which provides combustion air fan control to accurately control the heat from the system without use of expensive control valves.
Owner:ADEMCO INC +1
Calibrating a loop-filter of a phase locked loop
InactiveUS6972633B2Automatically calibratingMultiple-port networksPulse automatic controlLoop filterSingle chip
The invention relates to a method of automatically calibrating a loop-filter of a phase locked loop, which loop-filter comprises at least one RC-filter component and is integrated on a single chip together with at least one RC-filter component of another entity than the phase locked loop. In order to simplify a calibration of the loop-filter, the method comprises tuning the at least one RC-filter component of the loop-filter based on measurements performed on the at least one RC-filter component of the other entity. The invention relates equally to an integrated circuit chip comprising means for realizing this method and to a unit including such a chip.
Owner:NOKIA TECH OY
Vehicle-mounted camera calibration system
InactiveUS20180286078A1Automatically calibratingImage enhancementImage analysisCamera imageCamera auto-calibration
A vehicle-mounted camera calibration system is provided. This system automatically calibrates camera images during the transfer of vehicles on an assembly line of the vehicles without stopping the vehicles on the assembly line. This system includes a camera mounted to each one of the vehicles for sequentially shooting an image of a road surface, a memory for chronologically storing the images shot with the camera, a featuring-point extractor for extracting a featuring point from each of the shot images stored in the memory, a tracking-point extractor for extracting a tracking point that represents a position to which the featuring point has been transferred after a lapse of a given time, and a camera-calibration parameter calculator for calculating a calibration parameter to be used for calibrating images shot by the camera, from the featuring point and the tracking point.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Identification notation-containing test strip and test instrument thereof
InactiveUS20080159911A1Effectively prevent a user from forgettingAutomatically calibratingAnalysis using chemical indicatorsMaterial analysis by observing effect on chemical indicatorEngineeringTest strips
The present invention discloses an identification notation-containing test strip and a test instrument thereof characterized in that the test strip incorporates an identification area. Different identification notations of the identification area create different digital identification signals. After the test strip is inserted into the test instrument, the test instrument will obtain the digital identification signal and learn the test code, analysis parameters, expiry date and batch number of the test strip. Thereby, the test instrument can be calibrated according to the analysis parameters and provides a correct test result. The present invention can provide many sets of digital identification signals to differentiate test strips with different characteristics. Therefore, the present invention can be operated fast, conveniently and correctly and can prevent a user from forgetting to calibrate the test instrument.
Owner:HMD BIOMEDICAL
Fluid dispenser calibration system and method
ActiveUS20050161469A1Automatically calibratingOpening closed containersBottle/container closureIterative methodBiomedical engineering
A system and method for calibrating fluid detects an actual fluid dispensing characteristic, such as dispensing speed, and automatically adjusts the dispensing characteristic to match an ideal dispensing characteristic. The adjustment is conducted by a controller that controls fluid dispensing based on a function that correlates dispensing speed, a dispensed volume, and a dispensing time. The function allows calibration to occur automatically by converging system operation to the ideal dispensing characteristic, without requiring a user to calibrate the system through manual iterative methods.
Owner:TAYLOR COMML FOODSERVICE LLC
Method and apparatus for implementing automatic-calibration of TDR probing system
InactiveUS20070143050A1Automatically calibratingTesting/calibration apparatusSpeed measurement using gyroscopic effectsTime-domain reflectometerEngineering
A method and apparatus are provided for implementing automatic-calibration of a Time Domain Reflectometer (TDR) probing apparatus. A calibration procedure is performed automatically each time a TDR probe is moved from a device under test (DUT). A current calibration TDR waveform is obtained and compared with a reference calibration TDR waveform, checking for deviations between the current and reference measurements. If a deviation is detected, then the user is notified and calibration is failed.
Owner:IBM CORP
Active Matrix Liquid Crystal Device
InactiveUS20090273739A1Reduce any loss in display qualityAccurate measurementStatic indicating devicesNon-linear opticsDielectricActive matrix
In one embodiment of the present invention, an active matrix liquid crystal device includes an active matrix substrate and a counter electrode substrate separated by a layer of liquid crystal material. A temperature sensing capacitor includes electrodes on the substrates separated by the liquid crystal layer, which thus forms the dielectric of the capacitor. A reference capacitor and a calibration capacitor are also provided and have nominally the same capacitance. These capacitors form part of charge-transfer capacitance measuring branches within a sample / hold circuit. During a calibration cycle, the sample / hold circuit provides a signal dependent on the difference between the capacitances of the calibration capacitor and the reference capacitor and this is supplied to an analog / digital converter, which forms a reference voltage. During subsequent parts of the measurement cycle, the converter converts the output of the sample / hold circuit using the reference voltage in order to improve the accuracy of measurement of the liquid crystal capacitor, and hence the temperature of the liquid crystal material. This temperature measurement may be used, for example, to compensate the AMLCD for the effects of temperature variation in the liquid crystal properties.
Owner:SHARP KK
A System And Method For Monitoring A Person Via An Analog Multi-Zone Pressure Sensitive Pad
ActiveUS20180125413A1Simple switchAutomatically calibratingNursing bedsDiagnostic recording/measuringPressure sensitiveElectrically conductive
A pressure sensitive pad, generally planar in shape for placement underneath a mattress or cushion, capable of outputting a spectrum of signals depending on the pressure applied on the pad, comprising a plurality of sensitive zones, each zone being connected to a respective controller, configured to measure the pressure on each zone. The pressure sensitive pad comprising two electrically conductive layers; a variable conductive foam layer between the two conductive layers; and a non-conductive layer comprising a plurality of holes, disposed between a first of the two electrically conductive layers and the conductive foam layer. A system operable with the pad calibrates to detect absence and presence of a person for a range of mattress types and mattress weights and person weights; and determines a relative weight and position of the person while the person is on the mattress.
Owner:J BRASCH CO
GPS module test system for automatically calibrating test signal
ActiveUS20100001898A1Easy to replaceHigh precisionBeacon systemsElectrical measurementsElectricityAnalog signal
A GPS module test system for automatically calibrating a test signal includes a GPS test fixture, a satellite signal simulator, and a computer. The GPS test fixture carries a GPS module under test and is electrically connected to the same through contact, so as to receive a digital signal generated by the GPS module after the test. The computer receives device information of the GPS module under test through the GPS test fixture, and controls the satellite signal simulator through a GPS signal sample database, so as to generate a GPS analog signal to test the GPS module under test. Thereafter, on receiving the digital signal generated by the GPS module under test and determining the received digital signal is attenuated, the computer automatically gains a transmitted test parameter, so as to transmit the GPS analog signal in a preferable state.
Owner:ALTEK (KUNSHAN) CO LTD
Active Matrix Liquid Crystal Device
InactiveUS20090102780A1Accurate measurementAutomatically calibratingStatic indicating devicesNon-linear opticsCapacitanceDielectric
In one embodiment of the present invention, an active matrix liquid crystal device (AMLCD) includes an active matrix substrate including an active matrix area and a counter electrode substrate carrying a common electrode whose voltage may vary so as to reduce liquid crystal degradation. A layer of liquid crystal material is disposed between the substrates and a temperature measuring arrangement is provided on the active matrix substrate. This arrangement includes a temperature sensing liquid crystal capacitor which in turn includes a first electrode formed on the active matrix substrate outside the image generating region of the active matrix area and separated from the common electrode, which forms the second electrode of the capacitor, by the liquid crystal layer, which forms the capacitor dielectric. During operation of the active matrix, a measuring circuit repeatedly performs a precharging step, in which the capacitor is precharged to a fixed stable known voltage magnitude, and a step in which a signal representing the capacitance is formed. For example, the charge stored in the capacitor may be charge-shared with a transfer capacitor to form thereacross a voltage representing the capacitance of the liquid crystal capacitor and hence representing the liquid crystal temperature. The sampling is performed repeatedly, preferably in synchronism with addressing performed by the active matrix of the device. The resulting temperature measurement may be used, for example, to compensate the AMLCD for the effects of temperature variation in the liquid crystal properties.
Owner:SHARP KK
Microphone calibration with an RGSC beamformer
It is intended to improve and automate the calculation of calibration filters connected downstream from the microphones of an RGSC beamformer. To this end it is proposed that an adaptive calibration filter calculation unit be used, by means of which calibration filters are calculated from the output signals of adaptive blocking filters such that the power of an output signal of a blocking filter subtracted from a reference signal and filtered by means of a calibration filter respectively is minimized. The calibration filters connected downstream from the microphones are then replaced by the calibration filters thus determined.
Owner:SIEMENS AUDIOLOGISCHE TECHN
System and method of calibrating a system
ActiveUS20120188381A1Improve performanceThreshold value can be loweredRegistering/indicating time of eventsTelevision systemsComputer scienceFinish line
The system measures time of at least one object on the basis of passing a finish line and includes a camera with a photosensitive sensor and a lens for registering an image of the line. The image is sent to a processor for processing. Timing means deliver a timing signal to the processor. The system is at least partially automatically aligned. It thereto comprises a first active optical indicator that is located at a predefined location with reference to the line of passage, which indicator is detected as part of the image registered by the camera so as to obtain detection data. The system further includes a camera adjustment arrangement for adjustment of the orientation of a center axis of the camera, said adjustment being specified by the processor on the basis of the detection data.
Owner:TIMETRONICS
Method of Calibrating a Sensor System
InactiveUS20090128398A1Automatically calibratingAcoustic wave reradiationDistance sensorsSensor system
A method for calibrating a sensor system having transmitters and receivers mounted on a vehicle at a distance from one another, and for measuring the distance of the vehicle from a roadway boundary, by a) sending a send signal at a first time, using a transmitter of the sensor system, b) converting the received send signal to a receive signal using a receiver of the sensor system, and establishing a second time at which the receive signal exceeds a certain threshold value, c) determining the propagation time of the send signal from the transmitter to the receiver from the difference in time between the second time and the first time, d) repeating a) to c) cyclically for a certain number of cycles, e) determining a frequency distribution of the propagation times determined in c), and f) generating a sensor distance value, which correlates with the sensor propagation time between the transmitter and the receiver, with the frequency distribution determined in e).
Owner:ROBERT BOSCH GMBH
Auto-calibration of automatic grade control system in a working machine
ActiveUS20160231752A1Automatically calibratingConvenient lightingSoil-shifting machines/dredgersRoads maintainenceControl systemControl engineering
A working machine such as a road milling machine of an asphalt paving machine has an automatic grade and slope control system that causes the machine to maintain a pre-selected grade and slope with respect to a reference without significant operator input. A calibration system employs a calibration controller to calibrate the automatic grade and slope control system. The calibration controller causes a current to be sent to a valve that operates a linear actuator that may be employed to change the attitude of the frame of the working machine. The calibration controller uses feedback from at least one sensor, such as a height-measuring sensor or a slope-measuring sensor, in an iterative process that determines the minimum current necessary to cause a change in the attitude of the frame of the working machine. Once this minimum value is determined, the system will establish the optimum settings for the automatic grade and slope control system to improve its efficiency and cause it to operate more smoothly.
Owner:ROADTEC
Calibration circuit for automatically calibrating a view image around a car and method thereof
InactiveUS20120154586A1Accurate imagingAutomatically calibratingTelevision system detailsColor television detailsVideo camera
Owner:WELTREND SEMICON INC
Active matrix liquid crystal device
InactiveUS8354991B2Accurate measurementAutomatically calibratingStatic indicating devicesNon-linear opticsDielectricLiquid-crystal display
Owner:SHARP KK
Method to control anodic current in an x-ray source
An apparatus and method for an x-ray system includes an x-ray emitter having a first electrode and a second electrode. A high voltage supply is electrically connected to the first electrode. A power supply is electrically connected to the second electrode. A controller electrically connected to the high voltage supply and power supply is configured to provide a predetermined parameter to the second electrode during operation of the x-ray emitter to generate the predetermined dose rate from the x-ray emitter. During operation of the x-ray emitter, at least one operational value of the second electrode corresponding to the predetermined parameter is measured and combined with the predetermined parameter using an algorithm to obtain a modified predetermined parameter to be provided by the controller to the second electrode during a subsequent operation of the x-ray emitter.
Owner:DENTAL IMAGING TECH +1
Information processing system, information processing apparatus, and information processing method
InactiveUS7527383B2Automatically calibratingSimple configurationTelevision system scanning detailsProjectorsInformation processingProjection image
An information processing system includes a projection unit that projects at least image data for calibration, an image data capturing unit that captures projection image data projected by the projection unit, a specifying unit that specifies positions of points to be calibrated with the image data captured by the image data capturing unit, the positions of the points to be calibrated representing a shape of the image data for calibration, a calculation unit that calculates parameters to transform the positions of the points to be calibrated on to the positions of reference points, and a transformation unit that transforms the image data captured by the image data capturing unit with the parameters.
Owner:FUJIFILM BUSINESS INNOVATION CORP
Method and apparatus for calibrating and correcting tone scale differences between two or more outputs of a CCD
InactiveUS20060170774A1Automatically calibratingTelevision system detailsColor television detailsImage captureTone scale
A method for calibrating a camera contemporaneously with image capture where the camera includes an image sensor with two or more output channels, the method includes the steps of providing two or more output channels that receive data from the image sensor; wherein the two or more output channels are respectively connected to two or more portions of the image sensor so that a boundary exists between the portions in a general direction; providing an illumination source that permits illumination of the image sensor substantially parallel to the general direction of the boundary so that creation of a gradient image is permitted in the image sensor; providing a measuring mechanism for permitting measurement of pixel values of the image sensor at a plurality of locations; providing a processor for permitting determination of a mapping function from the plurality of measured values; permitting mapping of pixels in each portion of the image sensor so that one or more pixel values are mapped to different pixel values based on the mapping function; and permitting applying the mapping function to an image captured in close temporal proximity to mapping the one or more pixels.
Owner:EASTMAN KODAK CO
Positioning calibration method for construction working machines and its positioning calibration controller
PendingUS20210293972A1Improve calibration accuracyLabor savingMechanical machines/dredgersSurveying instrumentsMobile businessControl engineering
A positioning calibration controller for measuring and calibrating the configuration dimensions of a construction working machine having an machine body including a first surveying device for surveying the position coordinates and a movable working tool including one or more angle detecting devices, wherein the positioning calibration method and the positioning calibration controller of the construction working machine having the feature of specifying the configuration dimensions and the configuration positions of the movable business tool by the position measurement data and the angle data detected by the angle detecting device by measuring the position coordinates of the plurality of posture positions of the movable business tool by a second surveying device.
Owner:TOTALMASTERS CO LTD
Method and device for calibrating a light intensity measurement device
InactiveUS20090290148A1Automatically calibratingDesirable extinction ratioPhotometry using reference valueUsing optical meansMeasurement deviceControl signal
It is an object of the present invention to provide a method and a device for automatically calibrating a light intensity measurement device. The device (1) includes an optical switch (3) for switching a route of output from an optical intensity modulator (2), an optical attenuator (5) arranged on a first waveguide (4), a second waveguide (6), a light intensity measurement device (7), a control device (8) for receiving light intensity information measured by the light intensity measurement device (7) and controlling the signal to be applied to the optical intensity modulator (2), and a signal source (9) for receiving a control signal of the control device (8) and adjusting the signal to be applied to the optical intensity modulator (2).
Owner:NAT INST OF INFORMATION & COMM TECH
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