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US20130124129 Magnetormeter Calibration for Navigation Assistance  
Visual codes are scanned to assist navigation. The visual code may be a Quick Response (QR) code that contains information useful to calibrating a variety of navigation-based sensors such as...
US20130151158 UTILIZATION OF DYNAMIC DOWNHOLE SURVEYING MEASUREMENTS  
A method for making dynamic gravity toolface measurements while rotating a downhole measurement tool in a borehole is disclosed. The method includes processing magnetic field measurements and...
US20100307015 ACCURACY INDICATIONS FOR AN ELECTRONIC COMPASS IN A PORTABLE DEVICE  
Multiple instances of a geomagnetic field are calculated. Multiple instances of an average magnitude of a subset of the instances of the geomagnetic field are also calculated. When the average...
US20080066331 MAGNETOMETER CORRECTION SYSTEM AND METHOD  
A compass correction system and method which utilizes data from the vehicle bus, vehicle sensors and vehicle subsystems to determine a compass correction factor.
US20140130361 ELECTRONIC DEVICE MAGNETIC INTERFERENCE INDICATION METHOD  
A method of indicating an interference magnetic field at an electronic device includes: displaying a first arrow indicating a direction of magnetic north on a display of the electronic device, the...
US20140067305 STABILIZING ORIENTATION VALUES OF AN ELECTRONIC DEVICE  
Disclosed are methods and systems for stabilizing orientation values of an electronic device, the orientation values representing an orientation of the electronic device, the method comprising:...
US20120245875 METHOD AND SYSTEM FOR A SELF-CALIBRATED MULTI-MAGNETOMETER PLATFORM  
A multi-magnetometer device comprises at least two z-axis aligned and physically rotated magnetometer triads utilized for measuring corresponding earth's magnetic field. The magnetic field...
US20090300928 Mobile Electronic Apparatus and Bearing Display Method of Same  
A mobile electronic apparatus capable of effectively preventing erroneous recognition of a bearing (azimuth or compass direction) by a user, as a correct display of the bearing is correct when the...
US20140365154 COMPASS CALIBRATION  
A method that performs a series of interactive operations to calibrate a compass in a mobile device. The method requires a user to move the device to a variety of different orientations. In order...
US20080172174 Mobile Bearing Calculator and Bearing Correction Method  
A mobile bearing calculator having a geomagnetic sensor for detecting earth-magnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor....
US20110231133 Methods and Systems for Wireless Platform Attitude Determination  
Wireless platform attitude information such as pitch, roll and heading are disclosed. Attitude estimates can be made by using orthogonally mounted gyroscopes. Attitude estimates can be also made...
US20130245982 METHODS AND DEVICES FOR DETERMINING ORIENTATION  
Methods and electronic devices for determining orientation are described. In one aspect, the present disclosure provides a processor-implemented method of determining a corrected orientation of a...
US20100017160 DEVICE COMPRISING A SENSOR ARRANGEMENT AND AN UPDATER  
Devices (1) comprising sensor arrangements (2) for providing first field information (11-13) defining at least parts of first fields and for providing second field information (14, 15) defining at...
US20120215474 CALIBRATION SYSTEM FOR SIMULTANEOUS CALIBRATION OF MULTIPLE MOTION CAPTURE ELEMENTS  
A calibration system for simultaneous calibration of multiple motion capture elements (MCEs) of at least one type (accelerometer and/or gyroscope). Includes motion and/or rotational element...
US20120259572 SYSTEM AND METHOD FOR GYROSCOPE ERROR ESTIMATION  
Methods and systems for compensating for gyroscopic errors. A system uses magnetometers to detect and measure a magnetic field local to a personal navigation device. When the local magnetic field...
US20080201096 COMPASS CALIBRATION SYSTEM AND METHOD  
An in-vehicle compass system and method that is calibrated based on a magnetic field model and/or a deviation analysis based on a location signal received from a positioning system.
US20120191396 GYROSCOPE SYSTEM MAGNETIC FIELD ERROR COMPENSATION  
One embodiment of the invention includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a gyro cell that is sealed to enclose an alkali metal vapor, a first gyromagnetic...
US20130085628 Modified Kalman Filter for Generation of Attitude Error Corrections  
Methods, systems, and computer-readable media are described herein for using a modified Kalman filter to generate attitude error corrections. Attitude measurements are received from primary and...
US20090070057 CALIBRATION PROGRAM AND ELECTRONIC COMPASS  
The object of the present invention is to provide a calibration program and an electronic compass that make it possible to calibrate the output of a magnetic sensor with a small amount of...
US20100063763 Self calibrating gyroscope system  
A self-calibrating gyroscope system provides improved estimates of, and compensation or calibration for, scale factor errors and bias errors. The gyroscope system employs a plurality of gyroscope...
US20140067306 CONTROLLING SENSOR USE ON AN ELECTRONIC DEVICE  
Described are methods and systems for controlling sensor use on an electronic device, the electronic device having a first sensor defining at least one first sensor axis, the method comprising:...
US20110087451 COMPASS CALIBRATION SYSTEM AND METHOD  
An in-vehicle compass system and method that is calibrated based on a magnetic field model and/or a deviation analysis based on a location signal received from a positioning system.
US20130204565 Calibration of Vibrating Gyroscope  
In a gyroscopic system, a vibrating gyroscope is controlled in gyrometer mode in a control loop. The control loop corresponds to at least one current control for an operating parameter. In the...
US20130338955 Determining and Correcting Error of Positional Vector-Valued Sensors Using a Fixed Angle Calibration Process  
Systems and methods described herein relate to the correction of positional vector-valued sensors using a variety of calibration processes including fixed-angle calibration, known-angle...
US20090254294 PROCESSES FOR MORE ACCURATELY CALIBRATING AND OPERATING E-COMPASS FOR TILT ERROR, CIRCUITS, AND SYSTEMS  
An electronic circuit includes an electronic compass (e-compass 1150) having e-compass sensors (X, Y, Z) mounted on different axes and operable to supply e-compass sensor data, memory circuitry...
US20100156653 ASSESSMENT DEVICE  
An assessment device is provided which allows for measurement of a position of interest, e.g., a body part, while a subject is in a functional position, such as may be required for the demands of...
US20110106474 ACCURATE MAGNETIC COMPASS IN MOBILE ELECTRONIC DEVICE  
Methods and apparatus are described herein for calibration and correction of non-constant sensor errors, and in particular non-constant compass errors, that are based in part on changing software...
US20100010765 System and Method for Azimuth Angle Calibration  
An improved procedure for calibrating the azimuth angle in a metrology module for use in a metrology system that is used for measuring a target on a wafer, and the metrology modules can include...
US20130035890 MOVING TRAJECTORY CALIBRATION METHOD AND MOVING TRAJECTORY GENERATION METHOD  
A moving trajectory calibration method is applied to receive a moving trajectory signal generated by a writing device while moving on a written plane and includes the following steps of:...
US20120072155 CORRECTION METHOD OF GEOMAGNETIC SENSOR IN MOBILE DEVICE, MOBILE DEVICE, AND PROGRAM  
A mobile device has a geomagnetic sensor, position detection means for detecting a position of the mobile device, and a controller operable to control the geomagnetic sensor and the position...
US20090292495 Dynamic motion control  
In one embodiment a method and corresponding apparatus are arranged to determine an accurate device heading by continuously combining an average magnetic heading with the compensated inertial...
US20120245874 METHOD OF OPERATING A MAGNETIC COMPASS ON A MACHINE  
A method of determining the heading of an excavator at a worksite uses a magnetic field sensor, mounted on the excavator, inclinometers that provide an indication of the pitch and roll of the...
US20130238268 APPARATUSES AND METHODS FOR CALIBRATING MAGNETOMETER ATTITUDE-INDEPENDENT PARAMETERS  
Methods and apparatuses for calibrating attitude-independent parameters of a 3-D magnetometer are provided. A calibration method includes storing and updating data related to a NĂ—9 matrix T and a...
US20100312509 CALIBRATION TECHNIQUES FOR AN ELECTRONIC COMPASS IN A PORTABLE DEVICE  
Measurement data is collected from a magnetic sensor in a portable device, while the device is being carried by its end user and without requiring the end user to deliberately rotate or position...
US20110320151 Portable Electronic Apparatus and Geomagnetism Sensor Calibration Method  
A portable electronic apparatus able to suppress a drop of display precision concerning a bearing due to a drop of a detection precision of geomagnetism accompanying non-contact communication by...
US20110065460 CELLULAR PHONE HAVING NAVIGATION DEVICE, CORRECTING VALUE INITIALIZING METHOD, AND NAVIGATION FUNCTION  
A navigation device includes a measuring unit to measure the current position; a geomagnetism sensor that is provided on a predetermined main unit, and is to detect geomagnetism; an orientation...
US20110098958 AZIMUTH COMPUTING DEVICE, AZIMUTH COMPUTING METHOD, AZIMUTH COMPUTING PROGRAM, AND ELECTRONIC DEVICE  
An azimuth computing device includes an azimuth computing unit for computing azimuth data by using an output from a magnetic sensor; a buffer unit for storing the azimuth data; a control unit for...
US20060122800 System and method for providing adjustments for a compass  
The invention concerns a method (300) and system (100) for providing adjustments for a compass (126). The method can include the steps of receiving (312) geographical positional information from a...
US20110320152 INTEGRATED CLOSED-LOOP HYBRIDIZATION DEVICE BUILT IN BY CONSTRUCTION  
The invention relates according to a first aspect to a hybridization device (1) comprising a virtual platform (2), a bank (3) of Kalman filters each estimating a correction vector (dXO-dXn)...
US20100299093 Bearing Calculator and Error Correction Method  
A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic...
US20130332098 METHODS FOR IMPROVED HEADING ESTIMATION  
Methods for calibrating a body-worn magnetic sensor by spinning the magnetic sensor 360 degrees to capture magnetic data; if the spin failed to produce a circle contained in an x-y plane fit a...
US20100236084 SYSTEM FOR TESTING ACCURACY OF ELECTRONIC COMPASS  
A system for testing the accuracy of an electronic compass is disclosed. The system includes a circular track, a compass seat, an electromagnetic element, a driver, a power source, a calculator,...
US20110035172 SYSTEM AND METHOD FOR DETERMINING PARAMETERS REPRESENTING ORIENTATION OF A SOLID IN MOVEMENT SUBJECT TO TWO VECTOR FIELDS  
The system for determining parameters representing the orientation of a solid in movement subject to a first vector field and a second vector field—comprises a first triaxial sensor and a second...
US20100114517 METHOD AND SYSTEM FOR ORIENTATION SENSING  
An orientation sensing system uses an algorithm that iteratively improves an estimate of the body attitude. In each iteration, an error vector is generated that represents the difference between...
US20100250176 COMPASS SYSTEM AND METHOD FOR DETERMINING A REFERENCE FIELD STRENGTH  
A compass system comprises a magnetic field sensor for measuring an ambient magnetic field and a magnetic field generator, corresponding to the magnetic field sensor, configured to generate a...
US20090320305 Portable Electronic Apparatus and Geomagnetism Sensor Calibration Method  
A portable electronic apparatus able to execute processing concerning calibration of a geomagnetism sensor at a suitable timing and a method of calibration of such a geomagnetism sensor are...
US20110087450 Heading Error Removal System for Tracking Devices  
Systems are able to reduce or remove slowly-varying drift errors, such as heading errors, rate of rotation errors, and direction of travel errors, to correct the measurements from tracking...
US20090070056 METHOD AND DEVICE FOR CALIBRATING A MAGNETIC SENSOR  
Measurements are acquired from a magnetic sensor during a non-pre-ordered movement, and a plurality of sets of solutions are determined for respective expected values of intensity of the Earth's...
US20090089001 Self-calibrated azimuth and attitude accuracy enhancing method and system (SAAAEMS)  
A method and system for Self-calibrated Azimuth and Attitude Accuracy Enhancing are disclosed, wherein SAAAEMS approach is based on fully auto-calibration self-contained INS principles, not...
US20130238269 APPARATUSES AND METHODS FOR DYNAMIC TRACKING AND COMPENSATION OF MAGNETIC NEAR FIELD  
A method for tracking dynamic near fields and correcting a magnetic field measured together with an angular position having an unknown yaw offset relative to a gravitational reference system...

Matches 1 - 50 out of 82 1 2 >