Visual display with colour graphics - uses black=and=white processor with logic circuit to produce information required for colour display

摘要

A visual display device with colour graphics uses predefined control data for characters, lines, etc. and the 5 corresp. foreground and background colours information. The stored values are used to drive the visual display. A logic circuit (4) connected to the output of the processor (2) produces either the foreground (V) or background (H) information as the drive value according to the sequence of binary information in the control word from the processor.