| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which permits the presence of magnets over a wide range to be accurately detected while preventing limitations from being put on the arrangement of a circuit and a mechanism portion for achieving intrinsic functions in a game machine. SOLUTION: A magnetic field detection element detects a change in impedance due to a magnetic field given from the outside and outputs a detection voltage based on the amount of the change to amorphous wires arranged along three axes intersecting each other at right angles. A second averaging section 203 inputs the detection voltage of the magnetic field detection element and stores the input detection voltage in an initial value register 231 as an initial value when power supply to the game machine is started. A control circuit 180, when detecting an exceeding of the detection voltage of the magnetic field detection element over the initial value by a prescribed value, determines that magnets are present in the vicinity of the game machine. COPYRIGHT: (C)2010,JPO&INPIT
|
