Method for facilitating navigation and selection...

Details Method for facilitating navigation and selection... Method for facilitating navigation and selection...

2011-03-08

2011-03-08

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S158000, C345S157000

Reexamination Certificate

active

07903087

ABSTRACT:
Method an arrangement for facilitating the use of a trackball on a wireless handheld communication device as a navigation tool and a selection tool of designated information presented on a display screen of the device. A wireless handheld communication device is provided that has at a front face thereof a display screen located above a keyboard suitable for accommodating textual input. A depressible trackball functions as a navigation tool for moving a cursor about on the display screen when rolled and as a selection tool when sufficiently depressed. Cursor movement is affected by digitally engaging the trackball and maintaining the trackball in a navigation zone depth within the device. Selection of designated information is affected by depressing the trackball a predefined amount. The wireless handheld communication device is configured so that no cursor movement is affected by rolling movement of the trackball when in the selection zone.

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European Search Report for EP06120001, Issued on Jun. 11, 2007.

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