Patent ID: 7966048

Claim:
A portable device comprising: a first enclosure; a second enclosure to which a display device for displaying at least one of characters and images is arranged; a joint mechanism which joints the first enclosure and the second enclosure together; a detection device which detects positional relation between the first enclosure and the second enclosure; and a control device which carries out switching of operation modes of the portable device and restriction of usable operation modes, based on the positional relation between the first enclosure and the second enclosure detected by the detection device, wherein the joint mechanism brings the first enclosure and the second enclosure into movable linkage between a first position where silhouettes of the first enclosure and the second enclosure are overlapped and a second position where the second enclosure is moved in parallel from the first position in a plane of the first enclosure, and movable linkage directly between the first position and a third position, without passing through the second position, where the second enclosure is rotatably moved at a predetermined angle from the first position in the plane of the first enclosure, and wherein the detection device detects which of the first position, the second position, and the third position the positional relation between the first and the second enclosure is selected.