Portable electronic display apparatus, control method of portable electronic display apparatus and control program of portable electronic display apparatus

摘要

A portable electronic display apparatus includes at least two screen units whose intersecting angle is changeable; an inclination detecting device, which are mounted on each of the screen units, for detecting inclination with the ground; a watched screen detecting device for detecting a screen unit which user watches through comparing the inclination values of the screen units each other; and a screen display controlling device for carrying out a page turning in the case that the watched screen detecting device detects that a screen unit which user watches is switched over and judges that a predetermined page turning executing condition is satisfied.