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7613581 Method, apparatus, and medium for calibrating compass sensor in consideration of magnetic environment and method, apparatus, and medium for measuring azimuth using the compass sensor calibration method, apparatus, and medium  
A method of calibrating a compass sensor in consideration of a magnetic environment is provided. The method includes (a) acquiring magnetic force data by rotating a compass sensor 360 degrees, the...
7613567 Method for correcting the outputs of vehicle behavior sensor  
First and second acceleration sensor elements for detecting the acceleration of a vehicle in the direction in which the vehicle travels, and the acceleration of the vehicle in the direction...
7606676 Compass sensor unit and portable electronic device  
In a compass sensor unit, an azimuth data computing method is carried out by the steps of: inputting a signal from a geomagnetic sensor to measure magnetic field; determining whether to store...
7581326 Optical solid-state heading sensor  
A heading sensor includes a housing containing an interferometer having a mirror movable in response to fluctuations in a gravitational force applied to the housing. The interferometer, responsive...
7558688 Angle calibration of long baseline antennas  
A method for calibrating a sensor mounted on an aircraft includes the steps of: using an optical device to create reference points which define a reference line that is parallel to both horizontal...
7532991 Magnetic data processing device  
In a magnetic data processing device, an input part sequentially inputs magnetic data outputted from a two-dimensional or three-dimensional magnetic sensor. The magnetic data is two-dimensional or...
7509223 Read-side calibration for data interface  
Circuits, methods and apparatus are provided to reduce skew among signals being received by a data interface. Signal path delays are varied such that data and strobe signals received at a memory...
7493231 Process for determining the actual position of a rotation axis of a transportation mechanism  
Determination of the actual position of the rotation axis of a transportation mechanism relative to a reference axis, in particular relative to gravity, is performed with at least one inclination...
7474977 Compass sensor unit and portable electronic device  
In a compass sensor unit, an azimuth data computing method is carried out by the steps of: inputting a signal from a geomagnetic sensor to measure magnetic field; determining whether to store...
7472032 Adaptive multi-axis sensor array  
A sensor array made up of 2n piezoelectric oscillators (preferably paired quartz oscillators) is provided in which n equals the number of axes of interest and each one of the pairs of oscillators...
7467061 Information processing method and apparatus for finding position and orientation of targeted object  
In an information processing method, an orientation sensor is mounted on a targeted object to be measured, and bird's-eye view cameras for capturing images of the targeted object are fixedly...
7451549 Automatic calibration of a three-axis magnetic compass  
A magnetic compass apparatus and method to account for magnetic distortion while determining a magnetic heading is disclosed. The method enables a compass module, comprising at least two...
7451059 True azimuth and north finding method and system  
A method and a system are recited for obtaining a true azimuth heading for correcting a coarse azimuth heading measured from an observation position to a specific selected target by operating a...
7433798 Solid state orientation sensor with 360 degree measurement capability  
A solid state inclinometer sensor system includes a digital network of devices. Each device of the network includes a solid state inclinometer attached to a mounting structure. The inclinometer...
7421792 Apparatus and method of calibrating azimuth of mobile device  
Provided are an apparatus and method of calibrating azimuth of a mobile device. The apparatus includes: a motor; a magnetic field measuring unit disposed in the mobile device and measuring magnetic...
7389590 Geomagnetic sensor for computing azimuth and method thereof  
A geomagnetic sensor for computing an azimuth and a method thereof. The geomagnetic sensor includes a geomagnetic sensor module, including X, Y and Z axis fluxgates orthogonal to one another, for...
7376527 Azimuth measuring device  
An azimuth measuring device is provided that can obtain offset information when the direction of the azimuth measuring device is arbitrarily changed. The offset information is calculated based on...
7363718 Orientation data generation method, orientation sensor unit and portable electronic equipment  
Data are input from a geomagnetic sensor that detects magnetic fields in three axial directions, and magnetic field data are measured on the basis of the input data. The measured magnetic field...
7325320 Method for estimating the accuracy of azimuthal orientations and portable sighting device  
In a method according to the invention for estimating the accuracy of azimuthal orientations (a) of a measuring device ( 1 ) having an electronic magnetic compass ( 2 ), a plurality of...
7305315 Method of compensating tilt using two-axis geomagnetic sensor, and acceleration sensor, and apparatus thereof  
The present general inventive concept relates to a method of compensating tilt using a two-axis geomagnetic sensor and an acceleration sensor and an apparatus. Using the principle where a...
7295943 Geomagnetic sensor for calibrating azimuth by compensating for an effect of tilting and method thereof  
A geomagnetic sensor capable of calibrating an accurate azimuth even if the geomagnetic sensor is in a tilting state. The geomagnetic sensor includes a geomagnetism measuring unit, having a drive...
7275008 Calibration of 3D field sensors  
An apparatus-based method is disclosed for calibration of a 3D field sensor. The method includes accessing a plurality of samples, where the samples are from the 3D field sensor. Each sample...
7266470 Method for mitigating interference between nearby proximity sensors  
A method, that arbitrates when each of a plurality of sensors can perform an object detection procedure, assigns a different binary address to each sensor. Each bit in the binary address is...
7248983 Electronic compass and method of controlling an electronic compass using independent calibration and compass heading modules  
A method for controlling an electronic compass includes receiving raw magnetic field data into a calibration module and determining a calibration output based upon the raw magnetic field data. The...
7225551 Electronic compass and method for tracking vehicle rotation  
An example method for controlling an electronic compass includes determining compass tracking angles in a coordinate system for magnetic field data points that correspond to magnetic field sensor...
7210236 Method and apparatus for measuring magnetic offset of geomagnetic sensor and portable electronic apparatus  
A method is designed for measuring a magnetic offset of a geomagnetic sensor equipped in a portable information terminal apparatus having a storage. The geomagnetic sensor has a magnetic...
7162807 Geomagnetic sensor having a dip angle detection function and dip angle detection method therefor  
A geomagnetic sensor supporting a dip angle detection function. The geomagnetic sensor includes a rotation angle measurement part for measuring pitch and roll angles of the main body with respect...
7149627 Electronic compass system  
An electronic compass system includes a magnetic sensor circuit having at least two sensing elements for sensing perpendicular components of the Earth's magnetic field vector. A processing circuit...
7143004 Solid state orientation sensor with 360 degree measurement capability  
The device is a miniature, self-contained solid state orientation sensor. The unit utilizes three magnetometers and three accelerometers to calculate pitch, roll, and yaw (compass heading) angles...
7119533 Method, system and device for calibrating a magnetic field sensor  
A control device 200 calibrates a magnetic-field sensor 100 by computation. A computation unit 210 calculates the magnetic-field intensity based upon the outputs of X-axis, Y-axis, and Z-axis...
7020336 Identification and evaluation of audience exposure to logos in a broadcast event  
Method and system of detecting and analyzing the presence of a logo in one or more datastreams. In the method, at least one video datastream of an event is first received. Next, one or more regions...
6937954 Signal processor for use in electronic compass  
In a signal processor for use in an electronic compass for controlling an offset voltage generated in an analog signal process and automatically controlling an amplification gain, an analog signal...
6931339 Compass and communication system  
A system and method indicate azimuth of a diver to a remote console. A compass sensor module on a headgear worn by the diver has a two-axis gimbal mechanism provided with a protective housing...
6922647 Device and method for automatically detecting a calibration termination for a geomagnetic sensor  
A device for automatically detecting a calibration termination of a geomagnetic sensor includes a detection unit for detecting signals X and Y outputted from X-axis and Y-axis coils of the...
6904377 Method for measuring force-dependent gyroscope sensitivity  
System and method for measuring force-dependent gyroscopic sensitivity. A force-effect model of the effects of acceleration on the output of a gyro triad is determined. Rotation sequences are then...
6868360 Small head-mounted compass system with optical display  
A system and method indicate the direction faced by an operator. A waterproof housing has a mounting mechanism to engage a part of a headgear worn by an operator to position the housing in a...
6853918 Electronic compass  
An electronic compass comprises a saturable core sensor ( 2 ) with a core ( 3 ) made of ferromagnetic material surrounded by an electric winding ( 3 ′), a first couple of electric windings ( 4, 5...
6768957 Electronic azimuth meter, correcting mechanism for electronic azimuth meter, and electronic timepiece having electronic azimuth meter  
A correcting mechanism for an electronic azimuth meter has an X-direction magnetic sensor and a Y-direction magnetic sensor for detecting a magnetic field in two orthogonal directions X and Y and...
6760678 Electronic compass  
A method and system for continuously and automatically calibrating the settings of an electronic compass, as needed, while a vehicle moves from place to place is shown. The calibration technique of...
6725169 Methods and apparatus for automatic gain control  
An apparatus for controlling an amplitude of a signal generated from a digitized sinusoid of rapidly and widely varying amplitude is described herein. The apparatus includes a two stage gain...
6564158 Broadband electromagnetic field component measurement system  
Apparatus and method having a probe and readout for taking electromagnetic field measurements by acquiring raw data and linearizing the data either during processing or after processing by using a...
6523271 Method of adjusting drive current of magnetism sensor and electronic azimuth meter  
To reduce a dispersion in a sensitivity of a magnetism detecting circuit driving, by current, a magnetism sensor comprising magnetism resistance elements in a bridge constitution to a dispersion in...
6449572 Method and device for classifying the driving style of a driver in a motor vehicle  
In a method for classifying the driving style of a driver in a motor vehicle, measured variables indicative of driving style are recorded and driving-style classification figures are determined by...
6418376 Method and apparatus to maintain compass heading with a moveable sensor mounting  
An electronic compass system for use in an adjustable fixture in a vehicle such as an automobile including a sensor for detecting a magnetic field and for providing electrical signals...
6408251 Calibrating a magnetic compass with an angular rate gyroscope and a global positioning system receiver  
A method and apparatus for calibrating an electronic compass of the type having a compass sensor, a calibration table and a display. A computer operating under program control is used to update the...
6401047 System using information on a communications bus to eliminate magnetic noise  
An electronic compass system using information on a communications bus to eliminate magnetic noise which is integrated with an instrument cluster. A vehicle accessory, such as a blower motor,...
6401036 Heading and position error-correction method and apparatus for vehicle navigation systems  
The present invention provides methods and devices that enable correction of gyroscope bias and gyroscope bias drift in low-cost, vehicular navigation and positioning systems without using...
6356851 Accelerated calibration for electronic compass module  
A system for calibrating an electronic compass for a vehicle of the type employing a Forward and Lateral magnetoresistive magnetic field sensor. As the vehicle changes headings, the system...
6336081 Geomagnetic field direction measuring system  
An arrangement for measuring the direction of the geomagnetic field {right arrow over (B)} E , in the proximity of a magnetic jamming device with a magnetic field direction variable as a function...
6286222 System for eliminating magnetic noise generated by vehicle accessories  
An electronic compass system for eliminating magnetic noise which is integrated with an instrument cluster. A vehicle accessory, such as a stepper motor, also located in the instrument cluster,...
Matches 1 - 50 out of 131 1 2 3 >