Variable speed, image pan method and apparatus

Details Variable speed, image pan method and apparatus Variable speed, image pan method and apparatus

G - Physics

09

G

375/11

G09G 5/08 (2006.01) G06F 3/033 (2006.01) G09G 5/14 (2006.01)

Patent

CA 2012797

VARIABLE SPEED, IMAGE PAN METHOD AND APPARATUS ABSTRACT A display apparatus is described having the capability to pan a viewport image across a world-plane image. The viewport image has defined boundaries and exhibits a cursor whose position is movable by a user operated mouse or keyboard controls. The invention comprises a method for providing a variable-rate pan action of the viewport image which includes panning the viewport image at a preset rate in the direction of a first viewport boundary, if the cursor has been moved to the first boundary. The viewport image is panned at a proportionally faster rate in the direction of the first viewport boundary, as the cursor is moved further beyond the first viewport boundary thus enabling a variable speed pan under user control.

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