Multiple window display system

Details Multiple window display system Multiple window display system

G - Physics

09

G

375/4

G09G 1/00 (2006.01) G09G 5/14 (2006.01)

Patent

CA 1280524

ABSTRACT A MULTIPLE WINDOW DISPLAY SYSTEM A multiple window display system includes a display device and a screen ownership area pointing to the identity of the window which is to contribute the data for each display area of the display device, characterised in that an ordered list is maintained of the active windows in the priority order thereof, means being provided to regenerate the screen ownership area from the list, on each change made to the list, in terms of list position per device display area, by overwriting, progressing through the list in order of increasingly significant priority order, the list indicating, in each position thereof, the identity of the window having the respective priority. The list contains the addresses of the windows in storage and the type thereof. The screen ownership area is reset to the lowest potential priority list position value and is overwritten. UK9-86-015

538994

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