EP 0422294 A1 19910417 - Display system.
Title (en)
Display system.
Title (de)
Anzeigesystem.
Title (fr)
Système d'affichage.
Publication
Application
Priority
EP 89310454 A 19891012
Abstract (en)
A display system (12) is presented, comprising an all points addressable display buffer (25), in which a pixel is represented by an n bit pixel word; and in which a display character is represented by a pixel matrix (32) comprising a plurality of pixels arranged in a plurality of pixel rows, a character font table (22) for storing a plurality of such character pixel matrices representative of display characters of a font, and control logic (21) responsive to a character code word (26) for selecting a desired pixel matrix from the character font table, wherein each pixel matrix is stored in the character font table in an m bit (m<n) per pixel format whereby the pixel is represented by an m bit word; and wherein the display system comprises translation means (23) for translating a pixel row arranged in the m bit pixel format (44) to a pixel row arranged in an n bit per pixel format (53) compatible with the APA display buffer.
IPC 1-7
IPC 8 full level
G09G 5/00 (2006.01); G09G 5/22 (2006.01); G09G 5/24 (2006.01); G09G 5/30 (2006.01); G09G 5/393 (2006.01); G09G 5/399 (2006.01)
CPC (source: EP)
G09G 5/22 (2013.01); G09G 5/30 (2013.01); G09G 5/393 (2013.01)
Citation (search report)
- [X] EP 0253352 A2 19880120 - HITACHI LTD [JP], et al
- [A] EP 0269174 A2 19880601 - PHILIPS NV [NL]
- [A] EP 0256838 A2 19880224 - TEKTRONIX INC [US]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0422294 A1 19910417; CA 2021829 A1 19910413; JP H03134699 A 19910607
DOCDB simple family (application)
EP 89310454 A 19891012; CA 2021829 A 19900724; JP 23344190 A 19900905