Patent ID: 8035617

Claim:
A portable computer device comprising: a data input ( 26 , 38 ); a control input ( 16 ); data acceptance logic ( 24 , 40 ) arranged to accept data on the data input ( 26 , 38 ), to determine whether time and location information is present, to add time and/or location information to data items not having time and/or location information respectively and to store data items in memory ( 22 ) together with respective time and location information; and a display arrangement ( 6 , 24 , 40 ) arranged to cause the display of data items, including data items stored in the memory ( 22 ), in one of a plurality of modes, the modes including a time mode and a space mode, the display arrangement being arranged: to switch ( 54 ) between the time and space modes in response to a corresponding input on the control input ( 16 ); to display in the time mode a representation ( 90 ) of a time interval together with representations ( 92 ) of those data items that have respective time information in the time interval, the representations of data items being displayed at locations corresponding to the respective time information; and to display in the space mode a representation of a display area ( 94 ) together with representations ( 92 ) of those data items that have respective location information within the display area, the representations of data items being displayed at locations corresponding to the respective location information; a zoom control ( 14 ), wherein the computer device accepts input from the zoom control ( 14 ) and adjusts the zoom setting of the display to adjust the displayed time interval in the time mode and the display area in the space mode in accordance with the input on the zoom control ( 14 ) and wherein in the time mode adjusting the zoom setting enables a broad view the representations ( 92 ) to details of a single representation ( 92 ).