G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 3/033 (2006.01) H04W 88/02 (2009.01) G06F 15/02 (2006.01)
Patent
CA 2600117
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.
Mak-Fan David
Nagy Tom
Borden Ladner Gervais Llp
Research In Motion Limited
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