Abstract: An attitude detection sensor includes three magnetic sensing parts that detect magnetic field strength in respective directions along three axes perpendicular to each other, and two tilt sensing parts that detect tilt angles around two axes perpendicular to each other. The tilt sensing parts each include a cantilever having a magnet body that moves in accordance with the tilt angle, and a magnetic detection head that detects a displacement of the magnet body. The three magnetic sensing parts and the two magnetic detection heads are each formed using a magnetic detection element of the same type. At least one electronic circuit for controlling the five magnetic detection elements, the three magnetic sensing parts, and the two tilt sensing parts is disposed in a single package in the form of a module.

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.