Abstract: A pocket computer is presented having an apparatus housing and a user interface with a touch-sensitive display provided at a first side surface of said apparatus housing, at least one key for navigation among content shown on said display, and at least one key for performing zooming on content shown on said display. Various methods of operating this user interface are also presented.

Abstract: A portable electronic apparatus including a touch-sensitive display on a first side surface of the apparatus housing; a first input device arranged to be actuated with a first digit of a hand of a typical user; a second input device arranged to be actuated with a second digit of the hand of the typical user, allowing the user to operate at least the first input device and the second input device without change of grip; and a controller coupled to the touch-sensitive display, the first input device and second input device, the controller displaying content on the touch-sensitive display. The controller can affect the display of content on the touch-sensitive display in a first manner when the first input is actuated and to affect the display of content on the touch-sensitive display in a second manner when the second input is actuated.

Abstract: Portable electronic apparatus including an apparatus housing; a touch-sensitive display for use with an input writing tool; a zoom-in key on a second side surface; a zoom-out key on the second side surface; and a controller. The portable electronic apparatus can display content on the touch-sensitive display, wherein displayed content is a subset of available content; the controller can zoom in on displayed content on the touch-sensitive display in response to an actuation of the zoom-in key; the controller can zoom out on displayed content on the touch-sensitive display in response to an actuation of the zoom-out key; and the controller can pan available content on the touch-sensitive display in response to a combination of a tap of the writing tool in a first position on the touch-sensitive display and a move of the writing tool to a second position on the touch-sensitive display.

Abstract: A pocket computer is presented having an apparatus housing and a user interface with a touch-sensitive display provided at a first side surface of said apparatus housing, at least one key for navigation among content shown on said display, and at least one key for performing zooming on content shown on said display. Various methods of operating this user interface are also presented.

Abstract: A multimedia terminal has a touch sensitive display that displays information and receives user inputs. A control unit controls the operation of the terminal in accordance with user inputs received by the touch sensitive display and selectively executes at least one audio application and at least one video application. There are a plurality of user keys. One of the keys changes an audio/video output of the terminal depending on the application being executed by the control unit at the time that the key is selected.