In Spectrum, Wishing Won't Make It So
http://www.tvnewscheck.com/articles/2010/07/09/daily.5/
The new technology could be something like DVB-T2, with MPEG-4, which the UK is implementing now for HD, though perhaps not gracefully. As I understand it, up to 4 or 5 HD channels are planned on one 8MHz mux/RF channel, but I can't comment as to the quality and I think only 3 are currently active.
In our case, trying to do this would probably mean to simulcasting all over again, but we have a problem now. We don't have 52-69 any more from which to operate a new ATSC MPEG-4 service or SBTVD or some other service.
This will be made even more difficult if we try taking away more channels during a 2nd transition period.
http://www.tvnewscheck.com/articles/2010/07/09/daily.5/
Quote:
New technology can now support more than one high-quality signal in a space that previously could only fit one.
Really?
Not according to the Broadcasting Engineering Forum, an assemblage of mostly top broadcast engineers that the FCC convened on June 25 to address various technical issues surrounding the FCC's (and now the president's) plan to take back about a third of broadcast spectrum and auction it off for wireless broadband.
According to the forum's panel on video compression and channel sharing, you really can't put two "high-quality" signals on one broadcast channel, if by "high-quality" you mean high-definition and I don't know how else you would define it in the second decade of the 21st century.
Speaking for that panel, Andy Setos of Fox said that channel sharing is "not viable" because one or both of the signals would be "significantly degraded."
"Ultimately, when you are required to do this, you are forced to create a winner and loser in HD streams," he said.
New technology can now support more than one high-quality signal in a space that previously could only fit one.
Really?
Not according to the Broadcasting Engineering Forum, an assemblage of mostly top broadcast engineers that the FCC convened on June 25 to address various technical issues surrounding the FCC's (and now the president's) plan to take back about a third of broadcast spectrum and auction it off for wireless broadband.
According to the forum's panel on video compression and channel sharing, you really can't put two "high-quality" signals on one broadcast channel, if by "high-quality" you mean high-definition and I don't know how else you would define it in the second decade of the 21st century.
Speaking for that panel, Andy Setos of Fox said that channel sharing is "not viable" because one or both of the signals would be "significantly degraded."
"Ultimately, when you are required to do this, you are forced to create a winner and loser in HD streams," he said.
The new technology could be something like DVB-T2, with MPEG-4, which the UK is implementing now for HD, though perhaps not gracefully. As I understand it, up to 4 or 5 HD channels are planned on one 8MHz mux/RF channel, but I can't comment as to the quality and I think only 3 are currently active.
In our case, trying to do this would probably mean to simulcasting all over again, but we have a problem now. We don't have 52-69 any more from which to operate a new ATSC MPEG-4 service or SBTVD or some other service.
This will be made even more difficult if we try taking away more channels during a 2nd transition period.
















