READOUT UNIT FOR DATA STORED IN A RANDOM-ACCESS MEMORY AND PRESENTED ON A RASTER DISPLAY IN ACCORDANCE WITH A GIVEN LINE PATTERN

摘要

The invention relates to a readout unit for reading out and displaying at a magnification on a picture screen a fraction of the data stored in a random-access memory consisting of N x N simultaneously accessible submemories. The number of picture elements representing the data to be displayed is multiplied until the total number of picture elements required for the display of a picture line is obtained, while the number of picture lines is multiplied until the total number required for presentation on the entire picture screen is reached.