EP 0351269 B1 19940316 - Method and apparatus for transparent image overlay on the screen of a visual display console.
Title (en)
Method and apparatus for transparent image overlay on the screen of a visual display console.
Title (de)
Verfahren und Anordnung zur transparenten Bildeinblendung auf dem Bildschirm einer Sichtkonsole.
Title (fr)
Procédé et dispositif pour l'incrustation en transparence d'images sur l'écran d'une console de visualisation.
Publication
Application
Priority
FR 8809551 A 19880713
Abstract (en)
[origin: EP0351269A1] The method enables transparent image encrustation on the screens of visual display consoles (7) controlled by graphics processors, these processors being connected to several memory planes of a graphics memory (9) to store the luminance and chrominance attributes of the image points. It consists in reserving, in the memory (9), an additional memory plane to store transparency attributes which can be assigned to each image point to enable the modification of the totality of attribute values stored in the graphics memory and relating to each point of the image to be encrusted as a function of the value of its transparency attribute stored in the additional memory plane. Application: encrustation of television images. <IMAGE>
IPC 1-7
IPC 8 full level
G09G 5/02 (2006.01)
CPC (source: EP)
G09G 5/022 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0351269 A1 19900117; EP 0351269 B1 19940316; DE 68913840 D1 19940421; DE 68913840 T2 19940630; FR 2634296 A1 19900119; FR 2634296 B1 19900907
DOCDB simple family (application)
EP 89401787 A 19890623; DE 68913840 T 19890623; FR 8809551 A 19880713