Apparatus and method for writing text characters to a raster scan video display operated in an all-points-addressable, or graphics, mode, and for reading characters thus written. A graphic video display buffer directly refreshes the display with graphics data received from a microprogrammed processor....http://www.google.ca/patents/US4408200?utm_source=gb-gplus-sharePatent US4408200 - Apparatus and method for reading and writing text characters in a graphics display
Apparatus and method for reading and writing text characters in a graphics ...
