As of now, there has never been an official NCAA champion in D-1. There has been a Tostitos/Nokia/BCS trophy given to the #1 team in the past, but I notice an NCAA logo in the middle of the field for the Division 1-AA tournament finals, as well as all other sports like basketball.
I have heard that the NCAA requires some kind of playoff to have a champion, and also that said playoff must factor in conference championships. Can anyone explain the rules?