An EPG displays programming information in a variety of ways including using 3-D images, alphanumeric text, and video data. A presentation engine allows viewers and/or programmers to select between varying programming worlds. In addition, non-EPG objects, such as interaction objects, may be conflated...http://www.google.com.mx/patents/US7516469?utm_source=gb-gplus-sharePatent US7516469 - Universal programming system and method for electronic programming guide
