A display apparatus capable of displaying, by use of an ordinary television set function, character/figure information having a higher display density than standard chemistry character figure information. The apparatus includes a first reducing device for reducing into a pixel a partition having vertical...http://www.google.es/patents/US5138450?utm_source=gb-gplus-sharePatente US5138450 - High density character and/or figure displaying apparatus
High density character and/or figure displaying apparatus