Method for asynchronously maintaining an image on a display...

Details Method for asynchronously maintaining an image on a display... Method for asynchronously maintaining an image on a display...

G - Physics

06

F

G06F 3/037 (2006.01) G09G 5/14 (2006.01)

Patent

CA 2151866

A method for asynchronously maintaining an image on a display device is disclosed which comprises the following steps. First, a drawing request is received from the application program. Then a drawing area of the image is determined in response to the received drawing request and the drawing area is inserted into a list of drawing areas. A screen update request is then received from the application program. In response to this received screen update request, a drawing area is retrieved from the list, and all graphic objects are redrawn if any portion of the graphic object lies within the retrieved drawing area.

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