Information retrieval device

1. An information retrieval device, comprising:

a jog-dial;

a screen;

a first level item processing unit configured to display at least a part of first level information items in a virtual ring segment on the screen, wherein said first level information items are rotated and the displayed first level information items are changed by rotating the jog-dial;

a first level capturing unit configured to select a first level information item that is displayed at a predetermined position by pressing the jog-dial;

at least one respective further level information item processing unit configured 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, wherein only outermost displayed further level information items are rotated and the outermost displayed further level information items are changed by rotating the jog-dial and all displayed lower level information items are kept static, and

at least one further level capturing unit configured to only select an outermost displayed further level information item that is displayed at a predetermined position by pressing the jog-dial and all displayed lower level information items are kept in their respective selected or not-selected state,

wherein said jog-dial is arranged to be partly visible so that ring segments of the virtual ring segment that appear on said screen represent a non-visible part of said jog-dial.

2. The information retrieval device of claim 1 , wherein several respective highest level information items are configured to be selected by pressing the jog-dial for a not-selected respective highest level information item and de-selected by pressing the jog-dial for a selected respective highest level information item, and including a storage unit configured to store a selected and not-selected status of the respective highest level information items.

3. The information retrieval device of claim 1 , wherein a level control unit is configured to cause a disappearing of the outermost displayed further level information items by tilting or double-pressing of the jog-dial.

4. A method for information retrieval, comprising:

displaying at least a part of first level information items in a virtual ring segment on a screen, wherein said first level information items are rotated and the displayed first level information items are changed when a jog-dial is rotated, and

selecting a first level information item that is displayed at a predetermined position when the jog-dial is pressed;

displaying 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, wherein only the outermost displayed further level information items are rotated and the outermost displayed further level information items are changed when the jog-dial is rotated and all displayed lower level information items are kept static; and

selecting only an outermost displayed further level information item that is displayed at a predetermined position when the jog-dial is pressed and all displayed lower level information items are kept in their respective selected or not-selected state,

wherein said jog-dial is arranged to be partly visible so that ring segments of the virtual ring segment that appear on said screen represent a non-visible part of said jog-dial.

5. The method according to claim 4 , further comprising:

allowing several respective highest level information items to be selected when the jog-dial is pressed for a not-selected respective highest level information item and to be de-selected when the jog-dial is pressed for a selected respective highest level information item, and

storing a selected and not-selected status of the respective highest level information items.

6. The method according to claim 4 , further comprising:

causing a disappearing of the outermost displayed further level information items when the jog-dial gets tilted or double-pressed.

7. The method according to claim 4 , further comprising:

arranging said jog-dial partly visible so that ring segments of the virtual ring segment appear on said screen as to constitute a not-visible part of said jog-dial.

8. A computer readable storage medium encoded with instructions, which when executed by a computer causes the computer to execute a method for information retrieval, comprising:

displaying at least a part of first level information items in a virtual ring segment on a screen, wherein said first level information items are rotated and the displayed first level information items are changed when a jog-dial is rotated, and

selecting a first level information item that is displayed at a predetermined position when the jog-dial is pressed;

displaying 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, wherein only the outermost displayed further level information items are rotated and the outermost displayed further level information items are changed when the jog-dial is rotated and all displayed lower level information items are kept static; and

selecting only an outermost displayed further level information item that is displayed at a predetermined position when the jog-dial is pressed and all displayed lower level information items are kept in their respective selected or not-selected state,

wherein said jog-dial is arranged to be partly visible so that ring segments of the virtual ring segment that appear on said screen represent a non-visible part of said jog-dial.