Ntt Docomo, Inc.

Keisaku Fukuda

Toshiyuki Suzuki

Hiroshi Inamura

Toshihiro Azami

Takeshi Tomimori

Takenori Kawamata

A mobile terminal device, which is provided with the plurality of keys, includes: a detection interface for detecting touching any of the keys by a user; a press detection interface for detecting pressing the key by the user; a controller for executing a first function assigned to the key at the time of detection of the user touching the key in a case where touching time period, for which the user touches the key, is equal to, or longer than, a predetermined judging time, and for executing a second function assigned to the key at the time of detection of the user touching the key in a case where the touching time period is shorter than the predetermined judging time; and an output controller for displaying an explanation on the first function on a display unit in a case where the touching time period is equal to, or longer than, the predetermined judging time.

Mobile terminal device and program used in mobile terminal device

A mobile terminal device, which is provided with the plurality of keys, includes: a touch detection interface for detecting that a user has touched a key; a press detection interface for detecting that the user has pressed the key; a controller for switching the mode in response to whether or not the user has touched a side key, in order to execute a first function assigned to the key in a case where the key is pressed by the user in a 'shift mode,' and to execute a second function assigned to the key in a case where the key is pressed by the user in a 'normal mode'; and a display unit for displaying an explanation on the first function assigned to the key in a case where it is detected in the &#x201c;shift mode&#x201d; that the user has touched the key.

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Fujisawa, Japan

Keisaku Fukuda