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EP0223383A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Multiple process, windowed display system

Assignee: Tektronix Inc
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Filing: 1986-10-06
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Granted: —
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Expires: 2006-10-06
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Abstract

Abstract An apparatus for displaying the display outputs of a plurality of simultaneously active computer processes in corresponding windows on a single screen includes a microcomputer, a display screen and display system software. The software represents a plurality of virtual terminals, one corresponding to each active process, for emulating the operation of real terminals communicating with the processes. Each virtual terminal maintains a display list comprising a set of instructions defining a display on a screen according to the output from the corresponding process. The software also includes a screen process for maintaining a subrectangle list comprising a set of instructions for allocating window portions of the screen to the displays defined by the separate display lists. A display list processor is provided for creating the windows on the screen according to the display and subrectangle lists.

Inventors

  • 👤 Gregory G. Huntzinger

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 23:25
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/14

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 134 words
An apparatus for simultaneously displaying on a single screen the display outputs of a plurality of active computer processes comprising: a plurality of virtual terminal means, one associated with each said process, for receiving output data from said process and for maintaining a display list associated with said process, said display list comprising a set of instructions defining a display on a screen according to said output data; screen process control means for maintaining a subrectangle list, said subrectangle list comprising a set of instructions for allocating portions of said screen amorg said displays defined by said display lists maintained by said virtual terminal means; and display list processing means for creating simultaneous displays in windows on said screen according to said display lists maintained by said virtual terminal means and said subrectangle list.
Claim 2
Independent Claim 134 words
An apparatus for simultaneously displaying on a single screen the display outputs of a plurality of active computer processes comprising: a plurality of virtual terminal means, one associated with each said process, for receiving output data from said process and for maintaining a display list associated with said process, said display list comprising a set of instructions defining a display on a screen according to said output data; screen process control means for maintaining a subrectangle list, said subrectangle list comprising a set of instructions for allocating portions of said screen amorg said displays defined by said display lists maintained by said virtual terminal means; and display list processing means for creating simultaneous displays in windows on said screen according to said display lists maintained by said virtual terminal means and said subrectangle list.
Claim 3
Independent Claim 105 words
A method for simultaneously displaying on a single screen the display outputs of a plurality of active computer processes comprising the steps of: receiving output data from each said process and maintaining a display list associated with each said process, each said display list comprising a set of instructions defining a display on a screen according to the output data from the associated process; maintaining a subrectangle list comprising a set of instructions for allocating portions of said screen to said displays defined by said display lists; and creating simultaneous displays in windows on said screen according to said display lists and said subrectangle list.
Claim 4
Independent Claim 105 words
A method for simultaneously displaying on a single screen the display outputs of a plurality of active computer processes comprising the steps of: receiving output data from each said process and maintaining a display list associated with each said process, each said display list comprising a set of instructions defining a display on a screen according to the output data from the associated process; maintaining a subrectangle list comprising a set of instructions for allocating portions of said screen to said displays defined by said display lists; and creating simultaneous displays in windows on said screen according to said display lists and said subrectangle list.

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