Abstract: An acceleration sensor device includes an acceleration sensor chip fixed onto a substrate at its bottom, sealed with a molding resin. The acceleration sensor chip has an airtight sealed space for a weight portion to swing in, in accordance with acceleration applied, and a cushion member which covers a side surface and a top surface of the acceleration sensor chip is interposed between the molding resin and the acceleration sensor chip.

Abstract: A mobile terminal apparatus 1 uses an acceleration sensor as a tilt angle sensor 24, and realizes various applications based on this detection result. A processing unit 10 counts the number of steps of a human based on acceleration components of low frequency detected by the tilt angle sensor that detects the acceleration components. At that time, the acceleration component of an axis among three axes which most approximates a gravity axis is mainly used. A viewpoint relative to a three-dimensional object or a three-dimensional space displayed on a display unit 36 is moved. By effectively utilizing the detection result of the tilt angle sensor, it is possible to realize a mobile terminal apparatus 1 featuring greater usefulness.

Abstract: A magnetic sensor assembly comprising magnetic detection elements is provided. In a magnetic sensor assembly 100 according to the present invention, a magnetic detection element 140 is fixed to a base member 110 and, by having the base member 110 stand upright, it is possible to stand the magnetic detection element 140 upright. Thereby, it becomes easy to manufacture magnetic detection devices which detect three-axis components of terrestrial magnetism vector. In the base member 110, first terminals 120 are provided on a first surface 112 whereas second terminals 124 are provided on a second surface 114. The first terminals 120 are electrically connected with electrodes of the magnetic detection element 140 whereas the second terminals 124 are electrically connected to external wires.

Abstract: 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 magnetic-field detection devices of the magnetic-field sensor 100. Such calculation is performed for four or more different points. The calculation is performed such that at least one point is not positioned on a plane including the other points. The computation unit 210 converts the outputs from the X-axis, Y-axis, and Z-axis magnetic-field detection devices of the magnetic-field sensor 100 into three-dimensional spatial coordinate points. Then, the computation unit 210 creates a sphere on which the four or more coordinate points thus obtained are positioned. The coordinate point of the center of the sphere thus created represents the magnetic-field offset.