Patent attributes
An information retrieval device, including a jog-dial, a screen, a first level item processing unit to display at least a part of first level information items in a virtual ring segment on the screen, wherein first level information items are rotated and thereby the displayed first level information items are changed by rotating the jog-dial, and a first level capturing unit to select a first level information item that is displayed at a predetermined position by pressing the jog-dial. The information retrieval device also includes at least one respective further level information item processing unit to display at least a part of respective further level information items corresponding to an information item selected in the next lower level information items in a virtual ring segment around the virtual ring segment defined by the next lower level information items on the screen.
