Abstract: A motion sensor which can easily and accurately detect bearing, attitude and acceleration in any of three-dimensional directions and a portable telephone using the same. The motion sensor comprises three magnetic sensing parts for detecting magnetic field strength in 3-axis directions orthogonal to one another, and three acceleration sensing parts for detecting accelerations in the 3-axis directions. Each of the acceleration sensing parts has a magnet body constituted to be able to displace depending on acceleration, and a magnet displacement detection head for detecting a displacement of the magnet body. The three magnetic sensing parts and the three magnet displacement detection heads are all made of the same type of magnetic detection elements which operate based on common operation principles. The three magnetic sensing parts and the three acceleration sensing parts are integrated into one modular package together with one electronic circuit for controlling these six magnetic detection elements.

Abstract: The present invention provides an external apparatus for mobile communication terminal, a mobile communication terminal, and an external display systems for mobile communication terminal by which application programs using detection means can be executed in a main body of a mobile communication terminal without raising the cost of the main body. The external apparatus 30 for mobile communication terminal is comprised of a sensor detection unit (detection means) 312 and a communication control unit (data transmission means) 311. The sensor detection unit 312 detects at least one of position, direction, attitude and movement of the external apparatus 30 for mobile communication terminal. The communication control unit 311 sends detection result data acquired based on detection results by the sensor detection unit 312 to the mobile communication terminal by wired or wireless non-public short-range communication.