04555775 is referenced by 413 patents and cites 10 patents.

A graphic terminal is disclosed using bitmaps to represent plural overlapping displays. Graphics software is also disclosed in which the overlapping asynchronous windows or layers are manipulated by manipulating the bitmaps. With this software, the physical screen becomes several logical screens (layers) all running simultaneously, any one of which may be interacted with at any time.

Title
Dynamic generation and overlaying of graphic windows for multiple active program storage areas
Application Number
6/433261
Publication Number
4555775
Application Date
October 7, 1982
Publication Date
November 26, 1985
Inventor
Robert C Pike
Berkeley Heights
NJ, US
Agent
Robert O Nimtz
Assignee
AT&T Bell Laboratories
NJ, US
IPC
G06K 15/18
G06F 7/00
G06F 3/00
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