Abstract: In an oxygen sensor control apparatus, after start of fuel cut, the weighted average Ipd of corrected values obtained by multiplying the output value of a mounted oxygen sensor by a correction coefficient Kp is obtained as a representative value Ipe, representing the corrected values in the fuel cut period (S19). In the case where the number of times the representative value Ipe is continuously judged not to fall outside a second range (S21: NO) and to fall outside a first range (S23: YES) reaches 10 (a first number of times) (S26: YES), a new correction coefficient Kp is computed (S27). In the case where the number of times the representative value Ipe is continuously judged to fall outside the second range (S21: YES) reaches 4 (a second number of times smaller than the first number of times) (S29: YES), a new correction coefficient Kp is computed (S30).

Abstract: A high speed sensor data transfer interface is described. The interface combines a bridge circuit, carrier voltage source, first order RC high pass filter, reference power supply, Bessel filter, and high-speed analog to digital converter on a single Smart Transducer Interface Module board (STIM) to receive data from sensors. Data from the STIM is transferred to a Network Capable Application Processor (NCAP) having a microprocessor and either a Field Programmable Gate Array or a Complex Programmable Logic Device. The NCAP transfers data to a data exchange network.

Abstract: An ion meter is calibrated by providing two ISFETS with different areas, where the two gate areas are used to calibrate the two ISFETS with respect to one another. The use of two ISFET gates that can be calibrated with respect to one another eliminates the need for an ion meter to be recalibrated before every use, and allows the ion meter to measure the concentration in the solution over an extended period of time.

Abstract: Techniques are provided for improving pedometer readings. In some embodiments, motion data, such as acceleration data is detected, and a magnitude of the acceleration data, referred to as the modulus, is processed. Techniques involve performing frequency analysis on the modulus. In some embodiments, the modulus samples are counted perform frequency analysis on each complete sample set. Each complete sample set includes overlapping samples with the previous sample set. A suitable frequency analysis algorithm, such as fast Fourier transform (FFT) dominant frequency computation is performed on each sample set to determine the dominant frequency of the modulus. The dominant frequency of the modulus may be smoothed in some embodiments to remove irregularities such as spikes or periods of inactivity. In some embodiments, results of frequency analysis may be used to determine whether a detected step is a walking step or a running step.

Abstract: Device for determining an error induced by a high-pass filter in a signal, including a unit (3) for calculating the error according to the formula: E(t)=Ve(t)?Vs(t)=2·?·Fc·??=t0t(Vs(?)? Vs(?))·d?+E(t0) with: E(t) the value of the error induced by the high-pass filter, as a function of the time variable t, ?the trigonometric constant, Fc the cutoff frequency of the high-pass filter, t0 the initial instant, ?integration variable, Ve the signal input to the high-pass filter, Vs the signal output by the high-pass filter, Vs the mean value of the signal Vs. A method of correcting the error induced is also presented and applicable to the error correction of a piezoelectric pressure sensor.

Abstract: The invention provides a method for determining the angular magnitude of an imaging acquiring apparatus, which is capable of obtaining an arranging angular magnitude with respect to the imaging acquiring apparatus in various environments by an iteration algorithm having parameters of position of a calibrating tool with respect to an image coordinate system and characteristic value corresponding to a spatial coordinate system respectively. Meanwhile, the present further provides a vehicle collision warning system which functions to obtain the relative distance between the carrier and objects around according to the image acquired by the imaging acquiring apparatus and the angular magnitude and height of the imaging acquiring apparatus. By means of the method disclosed in the present invention, the procedure to detect the angular magnitude of the image acquiring apparatus is more convenient and accurate such that the convenience for using the vehicle collision warning system is capable of being improved.

Abstract: Embodiments of the present invention provide enhanced methods of calibrating arbitrary waveform generators using s-parameters, and arbitrary waveform generators calibrated according to those methods. Methods are provided for calibrating a single, non-interleaved channel of an arbitrary waveform generator, calibrating multiple interleaved channels, and calibrating pairs of channels, both interleaved and non-interleaved, to generate differential signals.

Abstract: Embodiments of the present invention provide enhanced methods of calibrating arbitrary waveform generators using s-parameters, and arbitrary waveform generators calibrated according to those methods. Methods are provided for calibrating a single, non-interleaved channel of an arbitrary waveform generator, calibrating multiple interleaved channels, and calibrating pairs of channels, both interleaved and non-interleaved, to generate differential signals.

Abstract: In a method for determining an output value of a sensor of automation technology, in a case in which the sensor has a non-linear characteristic curve K, which is pointwise specified, help points Hj are additionally produced according to a simple calculational specification. The output value is obtained from the input value via an interpolation of at least two points of the characteristic curve.

Abstract: A system, apparatus and method are provided for adjusting an on-line appearance sensor system (OnLASS) for color and other appearance characteristic(s) of a web product produced during a production run of a web production system. The OnLASS is calibrated and its setting(s) are sent to a color error minimizer (CEM). The OnLASS measures a first appearance characteristic of the web product during the production run and the on-line measurement is sent to the CEM. After the production run, a second appearance characteristic of the web product is measured with an off-line appearance sensor system (OffLASS) and the off-line measurement is sent to the CEM. The CEM compares the on-line and off-line appearance measurements and adjusts at least one setting based on the comparison. The adjusted setting(s) are sent to the OnLASS.

Abstract: An energy distribution of soft error-inducing radiation likely to be encountered by an electronic circuit during operation is determined. A tuned radiation source having a source energy distribution similar to the determined energy distribution is prepared. The electronic circuit is tested using the tuned radiation source.

Abstract: At a highland, a composition rate of air resistance is low which is included in a running resistance, because air density is low. This influences a vehicle running. Hence, a high-altitude environmental test for a vehicle by use of chassis dynamometer produces a result different from that of actual-road running. Therefore, an environmental-correction calculating section is provided on an input side of a running-resistance-command generating section configured to generate a running-resistance command. The environmental-correction calculating section receives an air temperature signal and an air pressure signal which are detected inside an environmental test laboratory, calculates an environmental correction value of rolling resistance and an environmental correction value of air resistance, and calculates a target running resistance from the environmental correction values.

Abstract: A fixed-source array test station provides a cost-effective high-throughput test bed for testing optical sensors that require stimulus at fixed angular positions. A SAL seeker requires stimulus at fixed angular position across its FOV to calibrate its spatial transfer function (STF). An array of fixed collimated sources at different angular positions is aligned so that their beams overlap the entrance pupil of the sensor under test. Each source may comprise an inexpensive light emitting diode (LED) or vertical cavity surface emitting laser (VCSEL) and collimator. To simplify alignment the sources may be positioned on and perpendicular to the surface of a sphere with the seeker's entrance pupil located at the center of the sphere. The sources are activated in accordance with an activation profile in order to calibrate or otherwise test the sensor.

Abstract: Removal of extraneous magnetic measurement components from magnetic anomaly detection (MAD) tends to increase its accuracy. Conventional removal accounts for anomalous magnetism manifested by the MAD vehicle (typically, unmanned), but assumes that the magnetic field applied to the MAD vehicle is the earth's magnetic field, i.e., is non-anomalous and known. In contrast, the present invention accounts not only for anomalous magnetism manifested by the MAD vehicle, but also for anomalous magnetism manifested in the MAD vehicle's vicinity, such as by a manned control vehicle. The present invention's mathematical characterization of vehicular “self-noise” due to induced and permanent magnetization is more refined, especially insofar as treating the vehicle's ambient magnetic field as an unknown (empirical) quantity, rather than a known (non-empirical) quantity.

Abstract: Exemplary systems and methods for monitoring a current state of a spatially extensive supply network having at least one control station that monitors and controls the supply network and a plurality of sensors that transmit measurement values relating to operating behavior to the at least one control station. Current measurement values are measured at positions on the supply network corresponding to each sensor. Each sensor analyzes measured signal variations and signal trends of the measured current values via an evaluating unit. The measurement values of each respective sensor are transmitted to the at least one control station in data packets at a defined time.

Abstract: A method correcting a measured spectrum of X radiation, according to a number of channels Nc, each channel i corresponding to an energy range between Ei and Ei+?Ei, including: determining function ?ti,j(k) determining size of temporal deviation ?t interval separating two interactions with energy Ei and Ej, stacking of which leads to a detected energy value Ek; determining, from the function ?ti,j(k), probability function Pi,j(k) that an event counted in a channel k corresponds to a stack of two interactions, respectively of energies Ei and Ej; determining, from the probability function Pi,j(k), a stack spectrum as a part of the measured spectrum that corresponds only to the stacks alone; and calculating or estimating at least a first corrected spectrum, by the difference between the measured spectrum and the stack spectrum.

Abstract: A measuring system including: at least one sensor module having a measuring transducer and an electronics module. The electronics module has a data memory, and a superordinated control unit, connected to the at least one sensor module via an interface module. The interface module has a signal processing, and communication, electronics, which converts received signals from a control unit into signals processable by the sensor module and outputs these signals to the sensor module. The control unit is embodied to execute an operating program; the operating program is embodied to read out sensor specific data and, based on the data read out, to provide to a user a guiding through a sequence of steps for performing at least one calibration procedure associated with the sensor module and to operate the sensor module for performing the calibration procedure.

Abstract: The present invention provides a connected sensor system which can be easily used by the user and which can give an external input to each sensor unit without making the wiring complicated, and also provides a network unit and a sensor unit used for the connected sensor system. A cyclic communication memory of a network unit is arranged with an external input request region, and an external input signal is stored to a corresponding memory in a host control apparatus. By performing cyclic communication between the network unit and the host control apparatus, the external input signal is stored to the cyclic communication memory of the network unit. Accordingly, the external input signal is transmitted to each sensor unit connected to the network unit, and each sensor unit executes the external input function.

Abstract: A calibration apparatus includes a fixture coupled to hold a distal end of a medical probe. An actuator is configured to press against the distal tip of the probe and apply to the distal tip multiple force vectors having respective magnitudes and angles with respect to the distal end, so as to cause a deformation of the distal tip relative to the distal end. A sensing device is configured to measure the magnitudes of the force vectors applied by the actuator. A calibration processor is configured to receive from the probe first measurements indicative of the deformation of the distal tip in response to the force vectors, to receive from the sensing device second measurements indicative of the magnitudes of the force vectors, and to compute, based on the angles and the first and second measurements, calibration coefficients for assessing the force vectors as a function of the first measurements.

Abstract: A measuring system for precise measuring a density of a medium flowing in a pipe line. The measuring system comprises a temperature sensor and a pressure sensor. Both sensors communicate with a measuring electronics of the system. The measuring electronics are operable to provide, based on temperature measurement and pressure measurement, a provisional density measured value, especially according to one of the industrial standards AGAR, AGN NX-19, SGERG-88 IAWPS-IF97, ISO 12213:2006. Further, the measuring electronics provides, based on the provisional density measured value and a density correction value, which is dependant on a flow velocity of the medium, and temperature measurement, a density measured value, which differs from the provisional density measured value, and which represents the density to be measured more accurately.

Abstract: Method of calibrating an angular sensor includes a transducer for converting a real value of a physical quantity (?), lying within an overall range of variations, into an electrical signal (VS1) according to a first predefined function f1(VS1=cos 2?+OB1) having a factor (OB1) liable to drift according to an external condition, the method including a first step of measuring known values of the physical quantity within the overall range of variations and with at least two values of an external condition, a step of determining a set of correcting parameters, a second step of measuring a known additional value of the physical quantity chosen in a restricted range of variations, and a step of adjusting the set of correcting parameters from the second measurement step.

Abstract: In a nuclear magnetic resonance (NMR) spectrometer, a sample spins about an axis tilted at a magic angle, a corrective magnetic field generating portion produces a corrective magnetic field, and a control portion controls the operation of the corrective magnetic field generating portion. An arithmetic unit included in the control portion uses at least one of BZ(1), B1(1)e, and B1(1)o or the linear sum of at least two of them as the first-order magnetic field component of the corrective magnetic field, uses at least one of B2(2)e, B2(2)o, B2(1)e, and B2(1)o or the linear sum of at least two of them as the second-order magnetic field component of the corrective magnetic field, and uses at least one of BZ(3), B3(1)e, B3(1)o, B3(2)e, B3(2)o, B3(3)e, and B3(3)o or the linear sum of at least two of them as the third-order magnetic field component of the corrective magnetic field.

Abstract: A calibrator for field devices is provided. In one aspect, the calibrator has the ability to communicate in accordance with at least two process communication protocols, and tests an attached process connection before engaging communication. In another aspect, the calibrator includes isolation circuitry to facilitate compliance with at least one intrinsic safety requirement, while communicating with field devices using an all-digital process communication protocol. In another aspect, a method of calibrating field devices is provided which accesses device descriptions of the field devices to generate calibration tasks.

Abstract: A method for identifying erroneous sensor outputs is provided. The method includes obtaining a first plurality of samples from a sensor over a period of time. A mean of the plurality of samples is determined. A first additional sample from the sensor at a time subsequent to times that the first plurality of samples were obtained is also received. A divergence of the first additional sample from the mean is determined. The first additional sample is identified as erroneous when the divergence is greater than a threshold.

Abstract: Disclosed are systems and methods for evaluating the navigation performance of MEMS inertial sensors. The method uses MEMS inertial sensors static data signals to estimate the static sensor errors and combines them with a reference kinematic signal obtained through field testing of a high-grade inertial sensor. Such emulated field data may then be processed with the corresponding GPS data collected in the same or different field test to evaluate the navigation performance of the MEMS inertial sensors.

Abstract: Embodiments of the present disclosure provide methods of controlling an ion detector to minimize false peaks when utilizing extended dynamic range techniques. In one exemplary example, methods of controlling an ion detector are provided, comprising the steps of: determining an electronic baseline signal of the ion detector; receiving one or more ion input signals at the ion detector; comparing the ion input signal to the electronic baseline signal; and multiplying the ion input signal by a selected compensation factor when the ion input signal exceeds the electronic baseline signal.

Abstract: A method of calibrating a data recording unit for measuring head acceleration, including the steps of providing a data recording unit mounted to a head protector, mounting the head protector on a support, subjecting the head protector and support to a force or pressure, measuring acceleration of the head protector resulting from the force or pressure, measuring acceleration of the support resulting from the force or pressure, and determining a relationship between the measured acceleration of the head protector and of the support.

Abstract: Some embodiments provide methods for calibrating a fluorometer in order to account for one or more optical properties of a water sample affecting fluorescence measurements. In some cases one or more calibration solutions are prepared with sample water from a specific field site. Fluorescence measurements are taken from a water sample and one or more of the calibration solutions, and calibration parameters are determined based on the measurements. In some cases a calibration solution is prepared by spiking sample water to include a higher concentration of a fluorescent tracer and measurements are taken to characterize a calibration slope coefficient. In some cases a calibration solution is prepared by adding an acid and measurements are taken to characterize a background fluorescence in the sample.

Abstract: The present subject matter is direct to methodologies for calibrating data obtained from an optical analysis system. An initial calibration matrix of sampled analyte concentrations is modified using mean-centering techniques and selection of low and high analyte concentration spectra to produce a two-point calibration. A modified calibration matrix is produced by generating a non-linear calibration matrix by multiplying the initial calibration matrix by the two-point calibration. In an alternate embodiment, an initial multivariate optical element design is modified by iteratively adjusting the design based on standard error of calibration determination based on non-linerly fitted functions.

Abstract: An automated method for calibrating in real time a diagnostic analyzer includes the steps of receiving diagnostic results of patient samples calculated by the analyzer using pre-set parameters of the analyzer, and calculating the centroid of the analyzer's diagnostic results. The centroid of the analyzer's diagnostic results is subtracted from a centroid of diagnostic results of a field population of comparable analyzers to obtain a bias in the centroid of the analyzer's diagnostic results. The bias is compared to predetermined limits Should the bias fall outside the predetermined limits, an optimization factor is derived and applied to the analyzer's diagnostic results to obtain optimized results from the analyzer without changing the pre-set parameters of the analyzer.

Abstract: A method is disclosed for operating a sensor arrangement having at least one measuring sensor and at least one reference sensor for recording the same physical variable, and having an analysis unit electrically connected thereto, with a characteristic of the sensor arrangement being recorded in an initialization phase from measured values of the at least one measuring sensor and of the at least one reference sensor, and an alarm being given during continuous operation if the deviation from the characteristic lies outside a tolerance band. It is proposed to suspend the alarm dynamically so long as the changes in the measured value in the variation over time of the at least one measuring sensor or in the variation over time of the at least one reference sensor differ by more than a definable limit within a definable time interval.

Abstract: The physical quantity measurement device involves a terminal unit, a sensor, a storage unit, an output unit, a communication unit, a control unit, and a discriminating unit. The terminal unit has a power terminal, an output terminal, and a ground terminal. The communication unit uses the power terminal in order to receive a serial signal from an external device. The control unit has an adjusting mode and a normal mode. The discriminating unit decides that the external device requests either the adjusting mode or the normal mode based on whether or not an electrical potential of each of the power terminal and the output terminal satisfies a predetermined condition. The control unit selects the normal mode when the discriminating unit decides that the external device requests the normal mode, and selects the adjusting mode when the discriminating unit decides that the external device request the adjusting mode.

Abstract: A processing system including a first processing module and a second processing module is disclosed. The first processing module transforms and amplifies a grounded signal to generate a first processed signal and transforms and amplifies a predetermined signal to generate a second processed signal. The second processing module transforms the first processed signal to a first digital code according to a first reference voltage group and transforms the second processed signal to a second digital code according to a second reference voltage group. The second processing module adjusts a third reference voltage group according to the first and the second digital codes, and during a normal mode, the second processing module generates a third digital code according to the adjusted third voltage group.

Abstract: A method is provided for adjusting a fuel composition estimate. The method generally uses a non-fuel related property to determine fuel composition. In some cases the method can be used after refueling and when the engine is operating without the benefit of oxygen sensor data, which can include evaluating data not based on characteristics of the fuel or exhaust from its combustion, such as engine torque variations while using the fuel. The method can include monitoring estimated engine torque to determine whether first variations in engine torque exceed a threshold, and, if so, modifying the previous estimate of fuel composition prior to the refueling event by a pre-determined amount.

Abstract: A sensor system includes a sensor unit configured for communication has a sensor controller that initiates calibration of the sensor when a respective calibration condition occurs. The calibration condition may involve detection of appropriate environmental conditions and/or a signal received via a communication component. The sensor controller may acquire missing information with the communication. A master controller may be used that receives data from multiple sensor units and distributes information and/or sends a calibration initiation signal.

Abstract: An acceleration detection device for detecting detected acceleration of a vehicle is provided with a stopped acceleration detector, an acceleration change detector, an acceleration estimating unit and a correcting unit. The stopped acceleration detector detects a detected stationary acceleration value when the vehicle is stopped on a sloping road based on an acceleration sensor signal from an acceleration sensor mounted on the vehicle. The acceleration change detector detects an acceleration change associated with the vehicle transitioning from a stationary state to a driving state on the sloping road based on the acceleration sensor signal. The acceleration estimating unit estimates an estimated stationary acceleration value based on the acceleration change that was detected by the acceleration change detector. The correcting unit corrects the detected stationary acceleration value based on a deviation between the estimated stationary acceleration value and the detected stationary acceleration value.

Abstract: A method and apparatus for exposure correction in scanners are disclosed. In the method, exposure is corrected for pixels received in an image sensor array. Exposure time is tracked for the incoming pixel data and a calibration factor is determined for correcting the gain, and the calibration factor is adjusted based on the tracked exposure time. In the apparatus, a scanner includes an illumination source and a sensor for receiving pixel data. Using values stored in a memory, circuitry is provided for determining a calibration factor, for tracking exposure time for the pixel data and for adjusting the pixel data based on the calibration factor and exposure time.

Abstract: What is disclosed is a novel system and method for characterizing a model-based spectral reflectance sensing device. In accordance with the teachings hereof, measurements of training samples taken with a previously manufactured ‘fleet master’ sensing device are adapted, in a manner more fully disclosed herein, based upon knowledge of the wavelengths of the illuminators used for both the subject and fleet master sensors, as well as spectral reflectance response of the training samples as measured by a reference spectrophotometer device. Utilizing the adapted measurements of the fleet master device, a reconstruction matrix can be quickly constructed for the subject sensor. The present system and method provides reasonably good accuracy using pre-existing measurement data. This results in manufacturing cost savings on a per-sensor basis.

Abstract: A tracking device may be used to detect a position or movement of an object. The tracking device may include a housing that supports an emitter. The emitter may transmit a first signal. A measurement device within the housing may measure rotational movement of an object. Circuitry may receive a second signal in response to the first signal. The circuitry may reset an angle value to a predetermined value based on the second signal. The angle value may be determined by a measurement of the rotational movement of the object.

Abstract: A method for compensating for environment induced variations in structural health monitoring data is described. The method includes imparting a vibration onto a structure first location, the structure at a first temperature, receiving a comparison signal resulting from the vibration at a second location, accessing data representing a reference signal previously received at the second location, based on vibration at the first location, the reference signal received when the structure was at a second temperature, dividing the signals across multiple time windows, performing a cross correlation between the signals in each window to maximally correlate the signals within each window, performing a weighted regression on time to estimate time shift, the weights based on reference signal energy in each window, to determine a relationship between time and time shift, and using the relationship between time and time shift of the comparison signal to reduce the effects of environment on the comparison signal.

Abstract: A sensor device for a fluid power apparatus and in particular a pneumatic cylinder comprises at least one sensor for producing at least one sensor value on the basis of a property or a condition of the fluid power apparatus, and a sensor communication means for the transmission of the at least one sensor value. As regards the sensor device there is a provision such that it includes a reading means for reading apparatus identification data characterizing the fluid power apparatus and the sensor device is adapted for the transmission of the apparatus identification data by way of the sensor communication means.

Abstract: Provided is a ?E measuring device minimizing external magnetic disturbance, more particularly, a ?E measuring device measuring a change (?E) in elastic modulus under a magnetic field by removing a bias effect by the earth's magnetic field and a magnetic tool and device and using a magneto acoustic resonance method. With the ?E measuring device, a space minimizing external magnetic disturbance using three-axis Helmholtz coils is provided and the ?E measuring device having a plurality of coil structures is inserted into the space, thereby making it possible to minimize external magnetic field disturbance.

Abstract: A controller for a generator set is disclosed. The controller may have a memory module having stored therein calibration factors associated with an offset error, a scale error, and a time delay error, and a processor module in communication with the memory module. The processor module may be configured to monitor at least one parameter of electric power directed from the generator set to a load, detect connection of the generator set to the load, and determine adjustments to the calibration factors after connection of the generator set to the load based on a comparison of the at least one parameter monitored by the processor module and measured at the load.

Abstract: A system of nodes including processors within a wireless sensor network includes an arrangement of the nodes with data connections therebetween within the wireless sensor network, wherein the data connections are limited to a set of distinct, non-intersecting paths, wherein each source node of the nodes is connected with a root nodes of the nodes by at least a predetermined number of the paths.

Abstract: A temperature sensor is provided. The temperature sensor includes: a temperature sensing unit for sensing a temperature and outputting a temperature sensing signal; an analog-to-digital converter (ADC), coupled to the temperature sensing unit, for converting the temperature sensing signal to a digital value, having an ADC output range; a calibration unit, coupled to the ADC, for correlating the ADC output range with at least one temperature range; a memory unit, coupled to the calibration unit, recording the ADC output range, and the at least one temperature range, and the correlation therebetween.

Abstract: An integrated circuit includes a transducer and transducer circuitry and additional elements useful in testing the transducer and transducer circuitry. A first power supply terminal and a second power supply terminal are for being directly connected to an external power supply terminal. A power bus is connected to the first power supply terminal. A logic function is for determining if the second power supply terminal is receiving power and if an automatic calibration test of the transducer and transducer circuitry has been run. An automatic calibration is for running an automatic calibration test on the transducer and transducer circuitry if the logic means determines that the second power supply terminal is receiving power and the automatic calibration test of the transducer and transducer circuitry has not been run.

Abstract: A three dimensional radiation measurement scanning system includes a circular drive operable with horizontal and vertical drives for moving a radiation detector through first, second and third orthogonal axes in a three dimensional scanning of the detector in a water tank. Motor are coupled to the drives and activated by a controller for providing the movement of the radiation detector which providing radiation field sensing signals for locations of the detector throughout the tank. A reference detector is fixed for comparing its radiation field measurements with those of the scanned radiation detector. An offset mount carries the radiation detector allowing it to be extended beyond the circular ring gear during horizontal movement of the radiation detector and thus position the radiation detector at wall surfaces of the water tank.

Abstract: A method is provided for tracking an object's position. One or more semiconductor-based sensors obtain measurements of an energy field associated with the object. A processor applies an algorithm to the measurements to generate one or more values representing a position of the object in a coordinate system. The energy field may comprise a magnetic field, for example. The object may comprise a magnet, for example.

Abstract: Provided is a mobile device including a magnetic sensor and a posture detection sensor for detecting a posture of the mobile device independently of the magnetic sensor, which acquires output data of the magnetic sensor as a plurality of sampling data items in a plurality of states in which the posture detection sensor determines that the mobile device is directed in directions different from one another, the plurality of sampling data items respectively corresponding to the plurality of states, and calculates an offset value which is estimated to be output by the magnetic sensor when the magnetic sensor is not sensing geomagnetism based on the acquired plurality of sampling data items.

Abstract: What is disclosed is a system and method for compensating for differences between two spectrophotometers for accurate color control in a color management system. In one example embodiment, at least one print is generated on the digital color printing system incorporating an inline spectral reflectance measurement sensor. A spectral reflectance of the print is measured using an inline spectral reflectance measurement sensor. Spectral reflectance of the print is measured using a selected offline spectral reflectance measurement sensor. From the measurements, a sensor correction model is determined which transforms spectral measurements obtained from the inline sensor into spectra approximating what the offline sensor would measure. The sensor correction model is used to perform color management on the digital color printing system such that print output of the digital color printing system is accurate when measured on the offline sensor.