Class / Patent application number | Description | Number of patent applications / Date published |
033355000 | Magnetic field responsive | 31 |
20080276474 | MAGNETIC AZIMUTH DETECTING DEVICE - A magnetic azimuth detecting device is easily reduced in size. Three or more magnetic sensors | 11-13-2008 |
20080301956 | INCLINATION-DETECTING DEVICE - An inclination-detecting device includes a casing, a magnet, and a magnetic field detecting unit. The casing is formed with a cavity therein. The cavity is defined by a cavity-defining wall that has equal numbers of sides and corners. The magnet is disposed movably in the cavity in the casing. The magnetic field-detecting unit is mounted on the casing. | 12-11-2008 |
20090019714 | Balance Unit with Direction-Setting Function - A balance unit with direction-setting function, including a support element positioned on a preset locating face, the support element having a contact section; a balance element having a contact section at its gravity center for contacting with the contact section of the support element by very little frictional coefficient, the balance element having a direction-indicating section; and a magnetic element connected with the balance element. By means of the interaction between the magnetic element and terrestrial magnetism, the balance element can overcome the little frictional force between the balance element and the support element, whereby the direction-indicating section of the balance element can naturally move to indicate a preset direction. | 01-22-2009 |
20090293294 | SENSOR CHIP, DETECTION DEVICE AND METHOD OF MANUFACTURING DETECTION DEVICE - A detection device includes an X-axis magnetic sensor, a Y-axis magnetic sensor, and a Z-axis magnetic sensor each having a sensing axis for detecting a geomagnetic azimuth and a sensor controlling semiconductor. The magnetic sensors are selected from those fabricated from the same wafer, each having the same structure, and directly mounted on the circuit substrate by directing the respective sensing axes of the magnetic sensors at different predetermined angles. Electrodes of the magnetic sensors for conducting the sensor controlling semiconductor are located in a parallel row at one side of the sensing surface. | 12-03-2009 |
20100024231 | NANOWIRE MAGNETIC COMPASS AND POSITION SENSOR - A nanowire magnetic sensor and position sensor for determining the position of a magnetic object and direction of magnetic field is disclosed herein. The magnetic compass includes a number of magnetic nanosensor printed on a flexible substrate, which covers 360-degree angle at equal intervals. Each magnetic nanosensor generally includes magneto-resistive nanowires with high magnetic sensitivity printed in sets e.g. of ten on the flexible substrate. The flexible substrate can also be bent to form a circular configuration to detect the azimuth direction of the magnetic field. The individual nanosensors can be connected into resistive Wheatstone bridge configurations by metalization. The magnetic nanosensors can be utilized as a position sensor of a magnetic object for position determination. Additional electronics can also be mounted or printed on the flexible substrate from other type of nanowires. | 02-04-2010 |
20100115779 | LOW COST ELECTRONIC COMPASS WITH 2D MAGNETOMETER - An electronic compass has a 2D magnetometer for determining two of the three components of the earth-magnetic field vector. Values for the magnitude and inclination of the field at the location of the device are given. If at least one of the body axes of the device is held horizontally in operational use, an educated guess can be made about the actual orientation of the device (e.g., heading and tilt angles) with respect to the earth. Accordingly, this compass is a very-low cost device. | 05-13-2010 |
20100223797 | NANOWIRE MAGNETIC SENSOR - A nanowire magnetic sensor includes an array of magneto-resistive (MR) nanosensors with each MR nanosensor including a set of MR nanowires that are all aligned in the same position for one direction. The substrate can be a flexible substrate bent into a circular configuration for compass applications. A plurality of individual nanosensors can be connected into resistive Wheatstone bridge configurations by metallization. | 09-09-2010 |
20120186091 | GEOMAGNETIC SENSOR DEVICE AND DIGITAL COMPASS WITH THE SAME - A geomagnetic sensor device comprises a first geomagnetic sensor comprising a first Wheatstone bridge circuit and a second Wheatstone bridge circuit which are arranged in the same horizontal coordinate system, and a second geomagnetic sensor comprising a third Wheatstone bridge circuit and a fourth Wheatstone bridge circuit which are arranged in the same vertical coordinate system. Each of the Wheatstone bridge circuits comprises at least four magnetoresistive elements connecting and having power input terminals and signal output terminals. The present invention can obtains a stable and high output signal and achieves high measurement accuracy for the geomagnetic azimuth angle. The present invention also discloses a digital compass. | 07-26-2012 |
20130000136 | MAGNETORESISTIVE SENSOR AND MANUFACTURING METHOD THEREOF - A magnetoresistive element formed by a strip of magnetoresistive material which extends on a substrate of semiconductor material having an upper surface. The strip comprises at least one planar portion which extends parallel to the upper surface, and at least one transverse portion which extends in a direction transverse to the upper surface. The transverse portion is formed on a transverse wall of a dig. By providing a number of magnetoresistive elements perpendicular to one another it is possible to obtain an electronic compass that is insensitive to oscillations with respect to the horizontal plane parallel to the surface of the Earth. | 01-03-2013 |
20130014397 | MIRRORED COMPASS WITH IMPROVED SIGHTING WINDOWAANM IDEN; MarlinAACI RivertonAAST WYAACO USAAGP IDEN; Marlin Riverton WY US - A recreational or outdoor mirrored compass is comprised of a base member, a hinged cover with a mirror and a sighting window for sighting a land mark, and a vial assembly pivotally coupled to said base member. The vial assembly comprises a vial, a magnetized indicator member pivotally journaled in the vial and an azimuth ring. At least parts of the inner sides of the sighting window are tapered in the line of sight. | 01-17-2013 |
20130014398 | MIRRORED COMPASS FOR IMPROVED DIRECTIONAL READINGAANM IDEN; MarlinAACI RivertonAAST WYAACO USAAGP IDEN; Marlin Riverton WY US - A recreational or outdoor mirrored compass is comprised of a base member, a hinged cover with a mirror and a sighting window for sighting a land mark, and a vial assembly pivotally coupled to said base member. The vial assembly comprises of a vial, a magnetized indicator member pivotally journaled in the vial and an azimuth ring. The compass further comprises of a hinge member for coupling the cover hingewise to the base member and a locking arrangement to lock the cover relative to the hinge member. | 01-17-2013 |
20140082952 | DETERMINATION DEVICE, ELECTRICAL DEVICE, AND METHOD OF DETERMINING MOVING STATE - A determination device includes a geomagnetism value obtaining unit for obtaining a geomagnetism value detected with a geomagnetism sensor; and a geomagnetism value determining unit for determining whether a user having the geomagnetism sensor is in a moving state in an automobile or on a train according to a magnitude of a change in the geomagnetism value obtained with the geomagnetism value obtaining unit. | 03-27-2014 |
20150128431 | Magnetic-Field Sensing Method - A magnetoresistive sensing device is provided. A first sensed magnetic-field component in parallel with the x-axis and a second sensed magnetic-field component in parallel with the y-axis of an external magnetic field forming a first inclination angle with the x-axis and a second inclination angle with the y-axis are determined. A virtual plane is defined so as to render a magnetic-field component perpendicular to the virtual plane of the external magnetic field is essentially zero. The first inclination angle and the second inclination angle are adjusted with reference to the virtual plane. An x-axis magnetic-field component in parallel with the x-axis, a y-axis magnetic-field component in parallel with the y-axis and a z-axis magnetic-field component in parallel with the z-axis of the external magnetic field are estimated according to the adjusted first inclination angle, the adjusted second inclination angle, the first sensed magnetic-field component and the second sensed magnetic-field component. | 05-14-2015 |
033356000 | Error indicator, preventor, or compensator | 9 |
20080250661 | SENSOR MODULE, METHOD OF CORRECTION THEREFOR, AND MOBILE OBJECT INCLUDING THE SENSOR MODULE - A sensor module maintaining high detection accuracy. Correction data of a detected magnetic field is updated only in a case that a fluctuation band acquired from an output signal of an acceleration sensor is less than a threshold value and a difference between an azimuth angle acquired from an output signal of a terrestrial magnetism sensor and an inclination angle acquired from an output signal of acceleration sensor is less than the threshold value. Therefore, the correction data is updated only in a case that a magnetic field at a position of a mobile object is stably detected, and an accuracy of the correction data can be maintained. | 10-16-2008 |
20080289203 | Compass device and method for a compass device - The invention relates to a method for defining a compass direction by means of an electronic compass device. In the method at least two field components of an external magnetic field are measured, from which a set of data points is formed, which correspond to the different orientations of the device relative to the external magnetic field, so that the location of the data points in a set of co-ordinates depends on the Earth's magnetic field and the magnetic disturbances of the environment. From the data points it is determined whether the set of data points correspond to a measurement, in which the device has remained on the horizontal plane with a predefined accuracy, or the tilting of the device is detected relative to the horizontal plane during measurement and the set of data points is corrected to correspond to a measurement in which the device has remained on the horizontal plane with a predefined accuracy. If the set of data points corresponds to a measurement in which the device has remained on the horizontal plane with a predefined accuracy, or the said correction of the set of data points has been performed, a new compass direction is defined by using the disturbance correction made on the basis of the said set of data points. The invention achieves a practical way of displaying an accurate direction. | 11-27-2008 |
20090293295 | AZIMUTH CALCULATION PROGRAM AND ELECTRONIC COMPASS - An azimuth calculation program is a computer-executable program that performs an azimuth calculation using output of a magnetic sensor. The azimuth calculation program includes a first step of generating one triangle in three-dimensional space using three output values of a magnetic sensor unit, a second step of determining a circumcircle of the triangle, and a third step of performing an azimuth calculation using center coordinates of the circumcircle and output values of the magnetic sensor. | 12-03-2009 |
20090300928 | 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 reliability of the display of the bearing is lowered by a change of the usage environment, and a bearing display method of the same, are provided. | 12-10-2009 |
20090320305 | 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 provided. | 12-31-2009 |
20100236084 | 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, and a magnetic shielding chamber. The electromagnetic element is disposed on the circular track and powered by the power source to generate a magnetic field. The electronic compass is installed on the compass seat and surrounded by the circular track. As such, the electronic compass can measure the magnetic field of the electromagnetic element and calculate direction relative to the electromagnetic element at different points of the circular track when the electromagnetic element is driven by the driver to move along the circular track. The magnetic shielding chamber is for shielding the electromagnetic element and the electronic compass from interference of external magnetic fields. | 09-23-2010 |
20100307016 | Magnetometer Accuracy and Use - A parameter related to the Earth's magnetic field can be used to determine accuracy of a magnetometer of a mobile device. In one aspect, a first instance of a parameter related to Earth's magnetic field is determined using data generated by the magnetometer. The magnetometer data can be based in part on a position of the mobile device with respect to the Earth. A second instance of the parameter can be determined using data generated by a model of Earth's magnetic field. The model data can also be based in part on the position of the mobile device with respect to the Earth. The first instance of the parameter can be compared with the second instance of the parameter. An accuracy metric for the magnetometer can be determined based on a result of the comparison. An indication of the accuracy metric can be presented by the mobile device. | 12-09-2010 |
20110131825 | Magnetometer Accuracy and Use - A parameter related to the Earth's magnetic field can be used to determine accuracy of a magnetometer of a mobile device. In one aspect, a first instance of a parameter related to Earth's magnetic field is determined using data generated by the magnetometer. The magnetometer data can be based in part on a position of the mobile device with respect to the Earth. A second instance of the parameter can be determined using data generated by a model of Earth's magnetic field. The model data can also be based in part on the position of the mobile device with respect to the Earth. The first instance of the parameter can be compared with the second instance of the parameter. An accuracy metric for the magnetometer can be determined based on a result of the comparison. An indication of the accuracy metric can be presented by the mobile device. | 06-09-2011 |
20160187134 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM - To be capable of realizing a technique which enables a measurement error of a magnetic sensor to be obtained with higher accuracy, there is provided an information processing apparatus including: a fluctuation measuring unit configured to measure temporal fluctuation of a magnetic value measured by a magnetic sensor during movement of at least the magnetic sensor or information obtained based on the magnetic value, and a measurement error acquiring unit configured to obtain a measurement error of the magnetic sensor based on the fluctuation. | 06-30-2016 |
033361000 | Electro-magnet or inductor (e.g., flux valve, etc.) | 6 |
20100199506 | Device for mechanically locating and reading the setting of an adjustable valve - The invention proposes a device for mechanically locating and reading the setting of an adjustable magnetic valve for controlling the flow of a fluid in a predetermined direction, and which is not particularly sensitive to the Earth's magnetic field, of simple and economical design, and which makes it possible, in a single step, to locate the magnetic centre of the valve and to determine the setting of the valve. | 08-12-2010 |
20100313434 | ELECTRONIC DEVICE AND METHOD FOR INDICATING DIRECTION IN ELECTRONIC DEVICE - An electronic device includes resistor, a pointer, a measuring module, a calculating module, and a display module. The resistor has a reference point corresponding with a reference direction. The resistor defines a circle. The pointer has a pointing terminal contacting the resistor at a contacting point corresponding with a reference direction. The pointer is pivotablely mounted about a centre of the circle. The pointer is aligned with the magnetic field of the Earth, and the measuring module measures the voltage between the contacting point and the reference point. The calculating module calculates an angle between the current direction and the reference direction according to the voltage between the contacting point and the reference point of the resistor. The display module displays corresponding direction information according to the angle. | 12-16-2010 |
20120151786 | FLUXGATE SENSOR AND ELECTRONIC COMPASS MAKING USE THEREOF - Provided is a flux gate sensor comprising the following: a magnetic core having a first wiring layer formed on a board, a first insulating layer formed in such a way as to cover the aforementioned first wiring layer, and a magnetic core which is formed on the aforementioned first insulating layer and which has a central portion and an end portion that continues to the aforementioned central portion, that has a width larger than the width of the aforementioned central portion, and that is located on either side of the aforementioned central portion; a second insulating layer which covers the aforementioned magnetic core and which is formed on the aforementioned first insulating layer; and a second wiring layer formed on the aforementioned second insulating layer. | 06-21-2012 |
20130104410 | Electronic Devices With Magnetic Field Compensating Conductive Traces | 05-02-2013 |
20160055952 | MAGNETIC SHEET, ELECTRONIC DEVICE USING SAME, AND METHOD FOR MANUFACTURING MAGNETIC SHEET - Provided is a thin sheet-shaped magnetic body holding on a resin film with an adhesive layer sandwiched between the thin sheet-shaped magnetic body and the resin film, wherein the thin sheet-shaped magnetic body is made from an Fe-based metal magnetic material, has a thickness of 15 μm to 35 μm and has an AC relative magnetic permeability μr of 220 or more and 770 or less at a frequency of 500 kHz. | 02-25-2016 |
20160116283 | THREE-AXIS DIGITAL COMPASS - A three-axis digital compass comprising two X-axis magnetic sensors, two Y-axis magnetic sensors, a flux concentrator, a signal sampling unit, a signal processing unit, and a signal output unit is disclosed. The X-axis and Y-axis magnetic sensors are arranged along a periphery of the flux concentrator. An external magnetic field is distorted when passing through the flux concentrator. An Z axis component of the external magnetic field is converted into X-axis or Y-axis magnetic field components when passing through the flux concentrator, and the so converted components of the external magnetic field act on the X-axis and Y-axis magnetic sensitive sensors. An output signal of the X-axis and Y-axis magnetic sensitive sensors is sent to the signal processing unit through the signal sampling unit, and it is used to calculate the three orthogonal components of the external magnetic field. These calculated external magnetic field components are output in a digital format through the signal output unit. The three-axis digital compass has a novel structure and an elegant computation algorithm. The design is compatible with AMR, GMR, TMR or other magnetoresistive sensor technology. | 04-28-2016 |
033364000 | Liquid buoyed magnetic needle | 3 |
20110138641 | INTEGRAL MAGNETIC COMPASS FOR ESTABLISHING DEVIATIONS IN REAL TIME - The invention relates to an integral magnetic compass for obtaining deviations in real time, formed by a transparent sphere or cylinder ( | 06-16-2011 |
20140182149 | MAGNETIC COMPASS - A magnetic compass is provided which features a stationary central pointer which extends outwards to the inside of a rim displaying graduated angular indicia, said rim being integral with a pivoting disc which is magnetically coupled. The central pointer assumes the graphic shape of a craft, such as a ship's hull, the stationary disposition of which offers a more intuitive realisation of the directional heading of a vessel with respect to the cardinal axes of a compass. | 07-03-2014 |
20140366391 | FLUID OR LOW FRICTION PERMANENT MAGNET COMPASS - Low friction or nearly frictionless compasses are provided. One compass embodiment includes a housing having a wall forming a chamber, the housing having a closed end and an open end. The compass includes a fluid disposed within the chamber. The compass includes a magnetized material floating in the fluid, wherein the magnetized material is operative to indicate Earth's magnetic north. The compass includes a protective face adjacent to the open end, wherein the protective face closes the open end of the chamber. Also provided is a compass that includes low friction material deposited on at least one side of the magnetized material and the adjacent closed end of the housing to create a nearly frictionless interface. | 12-18-2014 |