Patent ID: 8819580

Claim:
A portable terminal apparatus that displays on a display screen a plurality of screens simultaneously, comprising: an instruction means for generating, in accordance with an operation for activating a first function, a display instruction of a first screen which is displayed via the first function, the first function including an address book function, an outgoing call history function, an incoming call history function, a digital television function, a digital radio function, an e-mail function, a movie replay function, and a music replay function; a judgment means for judging, when the instruction means generates the display instruction while a second screen which has been displayed via a second function is displayed on the display screen, one of (i) an operation time required for the operation for activating the first function and (ii) a number of the operation required for the operation for activating the first function; an identification means for identifying a layout pattern for a simultaneous display from a plurality of preset layout patterns for the simultaneous display based on one of the operation time and the number of the operation judged by the judgment means; and a display control means for controlling so as to simultaneously display the first screen and the second screen in the layout pattern identified by the identification means.