Abstract: Television-type display system for displaying standard and non-standard characters within character locations on a television screen. A refresh memory contains digital code words which either represent a standard character such an an alphanumeric character or designate an address in a pattern memory. The pattern memory contains character image data for producing non-standard characters or symbols of any desired configuration within the confines of a character location on the television screen. The contents of the pattern memory and thus the non-standard characters which can be produced are alterable. The contents of the refresh memory are read out in order. Code words representing a standard character are applied to a ROM character generator which converts the code word to character image data for producing the standard character on the television screen.