EP 0197846 B1 19900221 - COLOUR VIDEO SIGNALS CONTROL CIRCUIT FOR A HIGH RESOLUTION VISUALIZATION SYSTEM, AND VISUALIZATION SYSTEM COMPRISING SUCH A CIRCUIT
Title (en)
COLOUR VIDEO SIGNALS CONTROL CIRCUIT FOR A HIGH RESOLUTION VISUALIZATION SYSTEM, AND VISUALIZATION SYSTEM COMPRISING SUCH A CIRCUIT
Publication
Application
Priority
FR 8504933 A 19850401
Abstract (en)
[origin: EP0197846A1] 1. A colour video signal control circuit for a high resolution display system, controlled by a picture storage (1), in which the aspect of each picture pixel is encoded by means of an aspect word of several bits, comprising : - a transcoding table storage (2) containing codes associated with a scale of colours and addressed on reading by the aspect word associated with each point to be displayed on the colour screen (4) of this circuit, - digital-to-analog converters (31, 32, 33) receiving each a part of the code read out of the transcoding storage at the address defined by the aspect word, and each delivering a primary colour signal as a function of this code to the screen (4), characterized in that the control circuit further comprises : - a set (5) of table buffer storages (51, 52, 53, 54) initially loaded by other codes associated with other scales of colours, and - a control circuit (7) receiving the screen scanning return signal (SYT) as well as blinking signals (HC1 , HC2 ), the contents of each table buffer storage being susceptible to be transferred into the transcoding table storage (2) during a return period of the picture scanner under control of the control circuit (7).
IPC 1-7
IPC 8 full level
G09G 5/06 (2006.01)
CPC (source: EP)
G09G 5/06 (2013.01)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0197846 A1 19861015; EP 0197846 B1 19900221; DE 3669084 D1 19900329; FR 2579789 A1 19861003; FR 2579789 B1 19870515
DOCDB simple family (application)
EP 86400664 A 19860327; DE 3669084 T 19860327; FR 8504933 A 19850401