EP 0269174 A3 19891018 - LOGIC CIRCUIT FOR EXPANSION OF MONOCHROME DISPLAY PATTERNS TO COLOR FORM AND VIDEO CONTROLLER COMPRISING SUCH LOGIC CIRCUIT
Title (en)
LOGIC CIRCUIT FOR EXPANSION OF MONOCHROME DISPLAY PATTERNS TO COLOR FORM AND VIDEO CONTROLLER COMPRISING SUCH LOGIC CIRCUIT
Publication
Application
Priority
US 93176086 A 19861117
Abstract (en)
[origin: EP0269174A2] A circuit which expands monochrome image-character patterns to color form for use in a raster scanned computer display system. Monochrome patterns are expanded from one bit per pixel to n bits per pixel. Foreground and background colors are programmable in a pattern generator which uses data from the expanded source patterns to select appropriate colors and characters for a destination pattern to be displayed. The expanded multicolor image is generated by hardware.
IPC 1-7
IPC 8 full level
G06T 11/00 (2006.01); G09G 5/02 (2006.01)
CPC (source: EP)
G09G 5/024 (2013.01)
Citation (search report)
- [A] EP 0084122 A2 19830727 - IBM [US]
- [A] EP 0167802 A2 19860115 - HITACHI LTD [JP]
- [A] US 3784736 A 19740108 - NOVAK J
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0269174 A2 19880601; EP 0269174 A3 19891018; JP S63197289 A 19880816
DOCDB simple family (application)
EP 87202226 A 19871116; JP 29047287 A 19871117