Pattern generation display system

A pattern generation display system having in combination a display screen and means for controlling shifting of positions of patterns by a small pitch on a display screen, said controlling means comprising:

• a pattern code processing means for producing (1) pattern code data, and (2) position data composed of base position adress data and displacement data representing displacement with respect to each pattern and its position on the display screen;
• a raster scan controller for generating base address data signals and raster address data signals corresponding to positions of rasters on the display screen;
• a refresh memory coupled to said pattern code processing means and said raster scan controller for (1) storing pattern code data and displacement data at addresses corresponding to base position address data from said pattern code processing means, and (2) for transmitting pattern code data and displacement data when supplied with base position address data signals from said raster scan controller;
• a pattern generator coupled to said refresh memory and said raster scan controller for generating pattern data corresponding to said pattern code data from said refresh memory and said raster address data from said raster scan controller;
• and
• a pattern data signal processing means coupled to said pattern generator and said refresh memory for transmitting said pattern data from said pattern generator with a timing defined by said base position address data and said raster address data from said raster scan controller, and by said displacement data of said refresh memory.