Method of moving enlarged image with mouse cursor and device for

Details Method of moving enlarged image with mouse cursor and device for Method of moving enlarged image with mouse cursor and device for

1995-05-08

1997-12-09

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345145, G09G 500

Patent

active

056965303

ABSTRACT:
When drawing is being executed in an enlarged display that moves with the movement of a mouse, because the movement of the enlarged display area centers on the point of the whole image indicated by the moving mouse cursor, a difference arises between the amount of movement of the mouse cursor in relation to the whole image and the amount of movement of the mouse cursor in relation to the enlarged display image. An enlarged display movement method is disclosed that eliminates this difference. Enlarged display of an area centering on a point of a whole image indicated by a mouse cursor is displayed superposed over the original image and centered on the indicated point. As long as the mouse cursor is within the enlarged display area, drawing can be executed within the enlarged displayed area without the enlarged display area being moved, and when the mouse cursor moves outside the enlarged display area, a new enlarged display is executed centering on the present point indicated by the mouse cursor.

REFERENCES:
patent: 4532605 (1985-07-01), Waller
patent: 5073771 (1991-12-01), Satta et al.

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