Nec Corporation

Mitio Nagai

Masatomo Mizuta

Mika Fujii

Masaki Shimamura

Kazuo Ootuta

Ryusuke Tai

Kiyosi Kohayakawa

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 casinghaving a key operation unitformed of a key switch and a display unit casinghaving a display unit and a touch panel, in which the display unit casing is laterally positioned with respect to the operation unit casing such that both of the key operation unitand the touch panelare operable by one-handed operation by a hand which holds the operation unit casing

Portable terminal device and state switching structure of portable terminal device

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.

Foldable type portable information terminal, condition notifying method used in the same and program therefor

Growing community of inventors

Tokyo, Japan

Mitio Nagai