DISPLAY AND RECORDING APPARATUS

摘要

A convenient hard copy output for a cathod ray tube (CRT) display device is provided by a thermal printer which prints a line of dots equal in number to the number of dots in one raster scan or line on the CRT screen. The information is printed during one such raster scan, in each refresh cycle of the screen, until the entire screen content has been reproduced. Use of one line during each refresh cycle enables the reproduction of the screen content by gating the serial data from the display control circuitry without the need for a separate character generator or related circuitry and also accommodates the use of an interlaced raster.