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Screen Manager Ring With Reordering Disclosure Number: IPCOM000039174D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue


Related People

Fatahalian, FH Flurry, GA [+details]


The Screen Manager Ring of the IBM RT 1 PC workstation identifies the currently opened Virtual Terminals and allows for management and selection of the Virtual Terminals through a user interface and through the Virtual Machine Interface screen management commands. The Screen Manager Ring is a doubly linked-list structure which provides the basic mechanism to control the virtual terminal presentation to the user. When the new terminal is opened, the Screen manager places an entry in the ring, and it removes the entry when the virtual terminal closes. The Ring has a Head position which denotes the active (visible) virtual terminal. It also has a TAIL position that represents the last virtual terminal in the Ring.