1st & Ten (graphics system)
1st & Ten is a computer system that augments televised coverage of American football by inserting graphical elements on the field of play as if they were physically present; the inserted element stays fixed within the coordinates of the playing field and obeys the visual rules of foreground objects occluding background objects. Developed by Sportvision and PVI Virtual Media Services, it is best known for generating and displaying a yellow first down line over a live broadcast of a football gamemaking it easier for viewers to follow play on the field. The line is not physically present on the field and is seen only by the television audience.
1st & Ten is sometimes used generically to refer to the class of systems capable of adding first down lines and similar visual elements and not just the Sportvision system. However, PVI's competing system is more accurately named L-VIS, for Live Video Insertion System.
Over time, usage has evolved. Some football broadcasts change the color of the line from yellow to red on 4th down, or show a second computer-generated line that marks the line of scrimmage. Lines can also be projected to show other types of field position, including markings for the red zone and the optimum maximum distance for a placekicker's statistical field goal range. In extreme weather situations, an entire virtual field with yard and boundary markers can be projected onto the field in order to allow league officials, broadcasters and viewers some way to follow action when all field markings are obscured by snow, fog or mud.
The system makes use of a combination of motion sensors mounted on the broadcast cameras to record what they are viewing, and/or the use of match moving computer graphics technology and an enhanced version of chroma key or "green screen" technology.
History and development
The idea of creating an on-field marker to help TV viewers identify first down distances was conceived and patented in 1978 by Naval Oceans System Command engineer David W. Crain, who presented the concept to Roone Arledge and Roger Goodman of ABC News and Sports and to the CBS Technology Center. At the time, both decided the broadcast industry was not ready to use Crain's invention.In 1998, ESPN programmer Gary Morgenstern and others revived the idea. ESPN's NFL coordinating producer, Fred Gaudelli, was tasked with overseeing an implementation for his network. The 1st & Ten line was first broadcast by Sportvision, a private company, during ESPN's coverage of a Cincinnati Bengals-Baltimore Ravens game on September 27, 1998. A few weeks later, on Thanksgiving Day in 1998, Princeton Video Image aired its version of the virtual yellow down line on a CBS broadcast of a Pittsburgh Steelers–Detroit Lions game. Four years later, SportsMEDIA introduced a third version during NBC coverage of a Notre Dame game.
The rivalry between PVI and Sportvision began with a collaboration. In July 1995, PVI had successfully used its L-VIS match moving technology to broadcast virtual advertising behind the home plate on a local broadcast of a Trenton Thunder baseball game. In January 1996, Roy Rosser, director of special projects at PVI, saw Sportvision's FoxTrax puck on the broadcast of the 1996 NHL All-Star Game and realized that a combination of L-VIS and FoxTrax would allow virtual insertions in a wider range of situations than either could do on its own, given the power of affordable computers. He contacted Stan Honey, CTO at Sportvision, and the two companies undertook a joint demonstration of their combined technologies during the 1996 World Series between the Atlanta Braves and the New York Yankees at the Atlanta–Fulton County Stadium. The test was not a success and the two companies parted ways, each developing complementary systems that were eventually used to broadcast Sportvision's "First and Ten" line and PVI's "Yellow Down Line". In October 1999, SportVision sued PVI alleging that PVI's virtual signage, first down line and other products infringed Fox/Sportvision patents. In August 2001, PVI counterclaimed against Sportvision in the federal court action, alleging that Sportvision's virtual strike zone and virtual signage products infringed a PVI patent. In 2002, the companies settled the lawsuits out of court through a cross-licensing deal.