Patent ID: 8185170

Claim:
A portable electronic apparatus, comprising: a display part; a rotary dial portion that is attached to a body so as to be rotatable in a predetermined direction; a rotation detecting part that detects rotation of the rotary dial portion; and a control part that controls such that a predetermined application is activated in accordance with a rotation state detected by the rotation detecting part, and a display screen corresponding to the activated predetermined application is displayed on the display part, wherein the body is configured with at least a first body including the display part, a second body including an operation unit, and a hinge mechanism that connects the first body and the second body to be changeable in o an opened state and a closed state by way of the hinge mechanism, wherein an opened/closed detecting part that detects whether or not the bodies are in the closed state is included, and wherein, the control part controls such that, in a case in which the opened/closed detecting part detects that the bodies are not in the closed state when the rotation detecting part has detected rotation of the rotary dial portion, a predetermined application in accordance with the rotation state is activated, and a display screen corresponding to the activated predetermined application is displayed on the display part, and in a case in which the opened/closed detecting part detects that the bodies are in the closed state when the rotation detecting part has detected the rotation, a new application is not activated.