Questions linger about how much of an advantage the Patriots may have had if they intercepted defensive signals. Under Belichick, the Patriots have often run a no-huddle offense, which forces opponents to quickly call a defensive play. N.F.L. rules allow quarterbacks to hear instructions from coaches  through a headset and into a speaker in the quarterback’s helmet  until there are 15 seconds left on a play clock. When the defensive play call is deciphered, the Patriots could call a play to counteract. The Patriots lost the 2000 opener against the Tampa Bay Buccaneers, when videotape of signals was used in preparation, according to the former Patriots player, who was among several former players interviewed by the N.F.L but said he did not want to speak publicly because the investigation is continuing.

The Patriots appear to have continued the practice of taping opposing signals for seven years. Last September, Goodell fined Belichick $500,000, fined the Patriots $250,000 and took away one of team’s first-round draft choices in 2008. After the sanctions were announced, the Patriots submitted six tapes, from games in 2006 and 2007, and some notes that dated to 2002, Goodell said. The tapes and notes were destroyed days after being handed to the league, because Goodell considered the matter closed.

But questions remain about how wide and deep the Patriots’ taping habits extended. Senator Arlen Specter, a Pennsylvania Republican who met with Goodell last week, is among those still questioning why the league was so quick to sanction the Patriots and destroy the evidence.

Image Patriots cornerback Ty Law tackling Keyshawn Johnson in Bill Belichick's first game as coach. Credit... Victoria Arocho/Associated Press

Goodell met with the competition committee Thursday to discuss his handling of the spying case. Committee members seemed satisfied and eager to turn the page.

“We were all satisfied, every one of us,” said John Mara, the Giants’ president. “All of us have our different opinions about the Patriots, but we were all satisfied that this thing was investigated properly and that they came to the proper conclusion.”

Bill Polian, the president of the Indianapolis Colts, said: “It’s behind us. It’s time to move forward.”