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JP4900348B2 |
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JP4900030B2 |
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JP2012506548A |
A method for determining a null drift (Hx0, Hy0) of an electronic compass includes steps for ascertaining first magnetic field strengths in a first coordinate system of the electronic compass via a triaxial magnetic sensor; for calculati...
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JP4890533B2 |
The influence of a magnetic field on a geomagnetic sensor is detected to report a highly reliable bearing, and a 3D geomagnetic sensor (170A) is arranged at a position facing a magnet (190). An external magnetic field detection processin...
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JP4890660B2 |
Provided is a geomagnetism detection device comprising a three-axis sensor for detecting the geomagnetism and adapted for determining the correct azimuth even in an inclined posture by detecting the geomagnetic vector and further calcula...
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JP2012505367A |
A magnetic compass includes a magnetic sensor, an acceleration sensor, respective signal conditioning circuits in electronic communication with the sensors and a microprocessor. These components are arranged and structurally coupled to a...
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JP4864146B2 |
To provide a portable electronic apparatus capable of appropriately controlling display when a connection state of an external apparatus generating a magnetic field is changed from presence to absence. In this portable electronic apparat...
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JP4861515B2 |
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 outputting azimuth data if the azimuth da...
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JP4856915B2 |
An exciting coil drive circuit of a magnetic sensor (11,12,13) comprises a D/A converter (24) that receives input of digital data for detecting a magnetic field; a first amplifier (22) that outputs a drive signal P applied to one end of ...
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JP4855131B2 |
To provide an electronic device including a direction indication function and a non-contact communication processing function that prevents a terrestrial magnetism sensor for sensing a direction from sensing erroneous terrestrial magneti...
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JP4854950B2 |
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JP2012007916A |
To provide a buoyancy type magnetic azimuth detection element which is small-sized, prevents the rotation inside an annular bobbin of an annular core case and has excellent inclination correction characteristics.The buoyancy type magneti...
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JP2012002695A |
To evaluate the factors of errors included in measured and calculated azimuths and to precisely determine the azimuth by offsetting the errors.Spatial vectors Xm, Ym, and Zm in the magnetic field detecting direction of a triaxial magneti...
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JPWO2010010811A1 |
In the control device for geomagnetic sensors, reduce the circuit scale and improve the accuracy of measured values. This control device for a geomagnetic sensor includes an analog circuit unit (1) that outputs a plurality of magnetic fi...
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JP4844179B2 |
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JP4846810B2 |
To provide an imaging apparatus capable of effectively utilizing a direction detection result in an imaging function. Imaged image data generated in an imaging part and direction information detected by a direction detecting part when im...
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JP3172470U |
To provide a magnetic compass which can know a deviation by a simpler method and can be used without drawing a magnetic north line on a map. A deviation line 9 (difference between the north indicated by a magnetic needle and the north an...
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JP4837457B2 |
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JP4830441B2 |
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JP4832579B2 |
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 electromagnetic coupling etc. and a calibr...
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JP4828640B2 |
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. Further, when a key of a key input pa...
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JP4814604B2 |
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JP2011220977A |
To provide a magnetic field detector down-sized, while improving the accuracy of measurement of a magnetic field.In the magnetic field detector 10, magnetic sensor elements 3 and 4 provided with magneto-sensitive sections 6, 7 and 8, eac...
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JP2011220772A |
To provide a magnetic field detecting device reduced in size and yet improved in the accuracy of magnetic field measurement.A magnetic field detecting device 10 so configured that first through third magnetic sensor elements 3, 4 and 5 p...
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JP4804764B2 |
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JP2011203243A |
To provide a magnetic data processing apparatus, method and program, capable of correcting an offset from an accumulated magnetic data group by a simple processing, irrespective of a distribution of the magnetic data group and a magnetic...
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JP4787359B2 |
Even if a measurement data group is not a measurement data group that is obtained in a space where the magnitude of a vector physical quantity to be measured is uniform, an offset with high reliability is estimated. The reliability of th...
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JP4776583B2 |
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JP4774472B2 |
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 ...
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JP4772140B2 |
To provide a cellular phone with a magnetic sensor capable of measuring the correct direction of a terrestrial magnetism, taking into consideration the magnetism generated by a current in the cellular phone and a magnetic component, in d...
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JP4768094B2 |
The timepiece (42) includes within the case (44) an electronic compass and a sighting device formed of two sighting marks (14, 15) arranged in the upper portion of the case (44) diametrically opposite each other and defining a reference ...
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JP4759578B2 |
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 is coupled to the sensor circuit to filt...
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JP4763507B2 |
To accurately measure the movement of a mobile information apparatus even for a mobile information apparatus which changes its shape. A shape detection means comprising a fold detector and a rotation detector detects the shape condition ...
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JP4761142B2 |
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JP4741888B2 |
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JP4743722B2 |
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JP4745373B2 |
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JP4734329B2 |
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JP4718821B2 |
A two-axis fluxgate sensor has a driving pulse generating circuit which generates pulse signal and outputs as a driving signal, and X-axis and Y-axis fluxgates which are in proportional relation with each other. The two-axis fluxgate sen...
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JP2011122847A |
To provide a correction system of an electronic azimuth meter which configures a correction of the electronic azimuth meter by utilizing a portable terminal with a positioning function even if an accurate orientation cannot be recognized...
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JP4709744B2 |
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JP4695325B2 |
A magnetic detection element of the present invention for detecting a strength of an external magnetic field, comprises a magnetic thin film formed on a single non-magnetic substrate, a circuit that applies a high-frequency current to th...
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JP2011089912A |
To provide a device of processing magnetic data correcting an offset in a group of accumulated magnetic data by a simple process, and also to provide a method and program of processing magnetic data and a magnetism measurement device.Thi...
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JP4674240B2 |
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 bearin...
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JP4669751B2 |
To perform azimuth display without receiving an influence due to radio communication (electric wave output). A transmission detection part 177 outputs a detection signal to a control part 166 when detecting transmission operation of a tr...
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JP4650410B2 |
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JP4648423B2 |
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JP4645263B2 |
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JP4643716B2 |
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JP4644126B2 |
There are provided an azimuth measurement device and its method for realizing an update of an offset calculated from the data acquired by azimuth measurement. A geomagnetism output measured by a 3-axis magnetic sensor (10) is amplified b...
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