Abstract: Portable communication terminal apparatus includes a function of performing communication for a call. Also, communication terminal apparatus includes a proximity sensor for detecting that an object (head of a user) exists in proximity to the communication terminal apparatus, and an acceleration sensor for measuring a motion state of the communication terminal apparatus. Communication terminal apparatus performs call ending processing for ending a call if, during the call, a transition is made from a state in which the presence of the object is detected by the proximity sensor to a state in which the presence of the object is not detected, and thereafter the motion state detected by the acceleration sensor satisfies a predetermined condition. The condition of the motion state is determined, for example, based on an operation consciously performed by the user, such as an operation of shaking communication terminal apparatus.

Abstract: A communication terminal device is a mobile communication terminal device that carries out communication for voice calls. The communication terminal device measures an orientation and a displacement of the device itself, and determines whether or not a condition occurring when a user picks up the device in his/her hand is met. In the case where it is determined that the condition occurring when the user picks up the device in his/her hand is met, and in the case where it has been determined that the user's head area has been detected as being near, the communication terminal device specifies a voice call partner on the basis of the orientation measured before the head area was detected as being near or while the head area was detected as being near. Then, when a tap operation performed by the user is detected, the communication terminal device performs a notification processing for making a notification of the specified voice call partner, and then makes an outgoing call to the partner.

Abstract: Portable communication terminal apparatus includes a function of performing communication for a call. Also, communication terminal apparatus includes a proximity sensor for detecting that an object (head of a user) exists in proximity to the communication terminal apparatus, and an acceleration sensor for measuring a motion state of the communication terminal apparatus. Communication terminal apparatus performs call ending processing for ending a call if, during the call, a transition is made from a state in which the presence of the object is detected by the proximity sensor to a state in which the presence of the object is not detected, and thereafter the motion state detected by the acceleration sensor satisfies a predetermined condition. The condition of the motion state is determined, for example, based on an operation consciously performed by the user, such as an operation of shaking communication terminal apparatus.

Abstract: A communication terminal device is a mobile communication terminal device that carries out communication for voice calls. The communication terminal device measures an orientation and a displacement of the device itself, and determines whether or not a condition occurring when a user picks up the device in his/her hand is met. In the case where it is determined that the condition occurring when the user picks up the device in his/her hand is met, and in the case where it has been determined that the user's head area has been detected as being near, the communication terminal device specifies a voice call partner on the basis of the orientation measured before the head area was detected as being near or while the head area was detected as being near. Then, when a tap operation performed by the user is detected, the communication terminal device performs a notification processing for making a notification of the specified voice call partner, and then makes an outgoing call to the partner.

Abstract: An information terminal has: a gaze determination unit 13 for determining whether user's gaze detected by a gaze detection unit is directed toward a display; and a touch input control unit for performing such control that when the gaze is directed toward the display, an input operation on the touch panel is made acceptable and that when the gaze is not directed toward the display, the input operation on the touch panel is made unacceptable. By this, acceptance/unacceptance of input can be readily controlled, without need for a user's special operation or a lapse of a fixed period of time.