An Electronic Program Guide (EPG) system is disclosed which accommodates a mix of high definition television (HDTV) and standard definition television (SDTV) EPG display formats. Viewers can toggle from cell to cell of an EPG display using a navigation system such as a remote control highlighting programs...http://www.google.fr/patents/US5900915?utm_source=gb-gplus-shareBrevet US5900915 - HD to SD guide converter for electronic television schedule system
HD to SD guide converter for electronic television schedule system
