04736309 is referenced by 16 patents and cites 10 patents.

A method and apparatus for automatically changing the display in overlapping rectangular viewport areas of a display screen of a digital display apparatus and in which each viewport area is assigned a different priority level. The method includes the steps of (a) storing in a random access store indications of the position and size of each viewport area, together with an indication of the priority level of the viewport area and (b) constructing a first matrix of (2n+1).sup.2 elements, where n is equal to the number of viewport areas, by assigning a vertical component to each vertical coordinate of each viewport area and a horizontal component to each horizontal coordinate of each viewport area, and for each element so formed storing an indication of the highest priority level of the viewports falling within the boundary formed by the coordinates defining the element.

Title
Data display for concurrent task processing systems
Application Number
6/759706
Publication Number
4736309
Application Date
July 26, 1985
Publication Date
April 5, 1988
Inventor
Peter D Niblett
Winchester
GB
Peter W Johnson
Winchester
GB
Agent
Frederick D Poag
Robert L Troike
Assignee
International Business Machines Corporation
NY, US
IPC
G09G 1/00
G06F 3/00
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