Comment Diagrams (Score 2, Informative) 129
Patent diagrams of two TiVo scenarios, one for remote control and one for sharing shows in hotels, can be found here: http://www.zatznotfunny.com/2005-11/tivos-rfid-rem ote-control-patent/
(1) Never draw what you can copy. (2) Never copy what you can trace. (3) Never trace what you can cut out and paste down.