Alphamosaic

Alphamosaic is a way of representing an image using square elements juxtaposed within a rectangle, each square containing either an alphabetic character or a semi-graphic character.
The French standard for videotex, Antiope, is an alphamosaic standard: each alphabetic character or mosaic is inserted into an 8 column by 10 row matrix. Antiope is incompatible with standards in other European countries and the CEPT has produced an enhanced system that is upwards compatible with other systems.