Abstract: Solved is a problem of difficulty in operating, with an operation unit casing held by one hand, both of a touch panel and a key operation unit without changing the hand which holds the unit. A portable terminal device comprising an operation unit casing 10 having a key operation unit 15 formed of a key switch and a display unit casing 20 having a display unit and a touch panel 30, in which the display unit casing is laterally positioned with respect to the operation unit casing such that both of the key operation unit 15 and the touch panel 30 are operable by one-handed operation by a hand which holds the operation unit casing 10.

Abstract: Solved is a problem of difficulty in operating, with an operation unit casing held by one hand, both of a touch panel and a key operation unit without changing the hand which holds the unit. A portable terminal device comprising an operation unit casing 10 having a key operation unit 15 formed of a key switch and a display unit casing 20 having a display unit and a touch panel 30, in which the display unit casing is laterally positioned with respect to the operation unit casing such that both of the key operation unit 15 and the touch panel 30 are operable by one-handed operation by a hand which holds the operation unit casing 10.

Abstract: A foldable type portable information terminal can accurately recognize operation mode in a construction having various of functions and various relative attitudes. The portable information terminal includes the upper unit having the display screen in either of the upper or lower surfaces and the lower unit having the operation surface in either upper or lower surfaces coupled for opening and closing and for pivoting. The portable information terminal has a detector which detects variation of relative attitude of the upper unit and the lower unit, for externally announcing variation of relative attitude of the upper unit and the lower unit as detected by the detector.

Abstract: A foldable type portable information terminal, an answer holding method and a program therefor can set and release answer holding with simple operation. The foldable type portable information terminal includes an upper unit having a display screen on one of upper and lower surfaces and a lower unit having an operation surface on one of upper and lower surfaces, and coupled with the upper unit for opening and closing and for pivoting. The terminal further includes a detector detecting change of relative attitude between the upper unit and the lower unit, and a controller setting answer holding state when the detector detects displacement of the upper unit to a preliminarily set first position upon call incoming.

Abstract: A housing improves the operability of a mobile phone in a sliding structure. With the mobile phone having the front unit and the back unit in the shortened state, a phone book can be searched with the phone number information about the partner, icon information, etc. displayed on the display portion, and the mobile phone enters the expansion state. In the control portion, when the expansion detecting portion detects the change from the shortened state to the expansion state according to the output signal of the magnetic sensor, the display contents on the display portion are determined, and it is determined whether or not the phone number information or the information relating to the phone number information (for example, an image, an icon, the phone book information such as a name, etc.) is displayed on the display portion.

Abstract: A foldable type portable information terminal can accurately recognize operation mode in a construction having various of functions and various relative attitudes. The portable information terminal includes the upper unit having the display screen in either of the upper or lower surfaces and the lower unit having the operation surface in either upper or lower surfaces coupled for opening and closing and for pivoting. The portable information terminal has a detector which detects variation of relative attitude of the upper unit and the lower unit, for externally announcing variation of relative attitude of the upper unit and the lower unit as detected by the detector.