In recent years, a variety of user interfaces for performing information processing have been proposed. As one example thereof, a near field wireless communication technology such as NFC (Near Field Communication) is sometimes used. For example, by moving a wireless communication terminal using NFC closer to a predetermined object, an application is activated and information associated with a position to which the terminal is moved closer is displayed.
PTL 1 describes a personal digital assistance which simplifies Internet access processing and retrieval processing of Web pages. The personal digital assistance described in PTL 1 includes a detection means for detecting a logo mark including a graphic or a character, and stores registration data which registers a Web page address corresponding to the logo mark. When an image inputted from a camera detects the registered logo mark, the personal digital assistance described in PTL 1 accesses the pre-registered Web page address.
PTL 2 describes an image display device which provides good visibility even in a situation where vibration occurs in the device. The image display device described in PTL 2, vibration applied with respect to the image display device is detected, and a display position of an image to be displayed on a display unit is moved in the opposite direction of the movement of the vibration.
In PTL 3, a portable telephone device which decreases a consumption current during a voice call is described. In the device described in PTL 3, the state where the portable telephone device is disposed in the vicinity of user's ear is detected on the basis of the brightness or the outline of image data which a camera unit obtains.
In PTL 4, a camera-equipped mobile terminal device which calls a function using an image generated by the camera is described. The camera-equipped mobile terminal device described in PTL 4 detects a feature which an application sets as a processing target, from a preview image obtained by the camera. Regarding all applications which set the detected feature as a processing target, each of them sets a state of receiving selection operation, and information which indicates the function and a method of the selection operation is displayed on a display unit in each of these applications.
In PTL 5, a portable telephone which can be easily found at an incoming call in the case of being placed on a desk, a floor, or the like is described. The portable telephone described in PTL 5 detects a state where the terminal is placed on a floor or a desk with a back camera, and changes a notifying method at an incoming call by the detection.