EP 0145817 A1 19850626 - A data display system.
Title (en)
A data display system.
Title (de)
System zur Darstellung von Daten.
Title (fr)
Système d'affichage de données.
Publication
Application
Priority
EP 83307697 A 19831219
Abstract (en)
A display system which is used as the input-output terminal of a data processing system which may be used for concurrent processing of application. Each application may have a viewport on the display screen and viewports may overlap. In order to write to low priority viewports without disturbing data displayed in those of a higher priority a mask buffer is used to prevent overwritting of high priority viewports.
IPC 1-7
IPC 8 full level
G09G 5/377 (2006.01); G06F 3/048 (2013.01); G06F 3/14 (2006.01); G09G 5/14 (2006.01)
CPC (source: EP)
G09G 5/14 (2013.01)
Citation (search report)
- [A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 20, no. 10, March 1978, pages 4161-4162, New York, USA; D.P. ATTWOOD: "Graphic display protect scheme"
- IBM TECHNICAL DISCLOSURE BULLETIN, vol. 20, no. 10, March 1978, pages 4161-4162, New York, USA; D.P. ATTWOOD: "Graphic display protect scheme"
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0145817 A1 19850626; EP 0145817 B1 19880810; CA 1229439 A 19871117; DE 3377683 D1 19880915; JP H0510680 B2 19930210; JP S60130795 A 19850712
DOCDB simple family (application)
EP 83307697 A 19831219; CA 469784 A 19841211; DE 3377683 T 19831219; JP 19588584 A 19840920