Patent ID: 6118436
Filing Date: 2000-09-12
Classification: G06F

Abstract:
A portable terminal apparatus comprising a main body with display means capable of displaying a character or other patterns on an upper surface side thereof and a key display on a lower surface side thereof, and a lid which can be mounted on and detached from said main body and which has a transparent touch panel arranged at a position to cover either one of said display means and said key display when said lid is mounted on said main body, said main body having means for recognizing the mounting condition of said lid whether said touch panel is mounted on the upper surface side or the lower surface side of said main body, means for determining a position pointed on said touch panel, means for controlling display of a character or a pattern displayed on said display means, and central processing means for controlling said display control means on the basis of outputs from said recognizing means and said determining means and for causing said display means to display the character or other pattern.