on through use of menu windowsUS5585866 *Jun 7, 1995Dec 17, 1996Miller; LarryElectronic television program guide schedule system and method including virtual channelsUS5621456 *Jun 22, 1993Apr 15, 1997Apple Computer, Inc.Methods and apparatus for audio-visual interface for the display of multiple program categoriesUS5640193Aug 15, 1994Jun 17, 1997Lucent Technologies Inc.Multimedia service access b