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Bengals owner Mike Brown says he agreed to do another "Hard Knocks" training camp series with HBO because viewers will see his team has changed.

Brown said during interviews Tuesday at the team's annual preseason luncheon that the Bengals got a bad reputation after they repeatedly drafted and signed troubled players. He took responsibility and said his thinking has changed. The Bengals have shied away from troubled players in recent drafts.

Brown touched on a variety of topics. He said there's no proof that concussions contribute to dementia, though he's glad the NFL is emphasizing player safety. And he disagrees with the league's move to enhance the stadium experience for fans by putting cameras in locker rooms. Brown says he was "one of those arguing for the good old days."