There is provided a physical quantity data correcting device that can accurately and rapidly make a correction of physical quantity data even under an influence of a variation in an external environment or a disturbance by causing a computation control uni...

The instrument has an avalanche compass card (1) whose base is arranged on a base plate (3). Geometric symbols, geometric characters, letters and numbers are arranged from west to east of a compass running direction. A slant measuring device (2) i.e. plumb...

A technique for calculating magnetic field information from a magnetic sensor employs a sensing unit containing the magnetic sensor and at least one other sensor capable of providing a direct or derivative measure of change in orientation. The method inclu...

Control section (160) is configured to measure the azimuth of electronic device (100) on the basis of the result detected by geomagnetic sensor (120) for detecting geomagnetism, and on the basis of the result detected by motion sensor (130) for detecting m...

It is determined whether or not a subject operating an information terminal is a human without requiring a character input. A client device displays an authentication screen, sequentially acquires positional information on the authentication screen based o...

There is provided an apparatus for generating an indoor magnetic field map for a building (100), the apparatus caused to acquire information indicating a measured magnetic field vector and information relating to an uncertainty measure of the measured magn...

The use of magnetic field sensing to perform sophisticated command control and data input into a portable device (25) is disclosed. A magnetic field sensor is embedded or fixedly attached to a portable device to measure changes in the magnetic field streng...

Boat compass consisting of a compass card wind-rose (1) in opaline semi-transparent material, varnished by dab or negative silk screen system; a led (2) illuminates the wind-rose from inside; inside the wind-rose (1) it is provided a diametrically magnetis...