Patent ID: 7843445
Filing Date: 2010-11-30
Classification: G01R

Abstract:
1. A portable electronic device comprising: a body; a flippable unit having a display; a pivoting shaft connecting the body with the flippable unit; a cover attached around an end portion of the pivoting shaft away from the flippable unit; a first magnetizable element disposed in the cover; a second magnetizable element disposed in the body; a magnetic induction sensor IC disposed in the body; and a magnet disposed at and rotatable with the pivoting shaft; wherein the first magnetizable element and the second magnetizable element are disposed between the magnet and the magnetic induction sensor IC to enlarge the magnetic field of the magnet such that the magnetic induction sensor IC is capable of detecting change of the magnetic field of the magnet when the flippable unit together with the magnet is pivoted relative to the body.