04653020 is referenced by 126 patents and cites 16 patents.

A multiple window display system is provided for displaying data from different applications in a multi-tasking environment. The display system includes plural screen buffers (12.sub.l to 12.sub.n) for storing character codes and attribute codes of data which may be displayed on the display screen. Task selection means (26) selectively couples the output of a single selected one of the plural screen buffers to the character generator (16) and attribute logic (18) at any given time. Address modification means (20.sub.l to 20.sub.n, 22.sub.l to 22.sub.n) permits changes to be made in the display windows. The software driver includes screen control blocks (32), window control blocks (34), presentation space control blocks (36), presentation spaces (38), and a screen matrix (40) in system memory. The presentation spaces (38) receive application data for plural windows of the displayable area. Each window defines the whole or a subset of a corresponding presentation space. The screen matrix (40) is mapped to the display screen and filters data from the windows of the presentation spaces to the screen buffer to designate which of the data will be shown in corresponding positions on the display screen.

Title
Display of multiple data windows in a multi-tasking system
Application Number
6/542572
Publication Number
4653020
Application Date
October 17, 1983
Publication Date
March 24, 1987
Inventor
William R Vincent
Poughkeepsie
NY, US
Jeffrey S Lucash
Hurley
NY, US
Harry Cheselka
Saugerties
NY, US
Agent
C Lamont Whitham
Frederick D Poag
Assignee
International Business Machines Corporation
NY, US
IPC
G09G 1/06
G06F 15/00
G06F 3/14
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