| John Bosco Jr. |
June 11th, 2007 09:21 PM |
Quote:
Originally Posted by Greg Boston
(Post 695318)
Alex, I didn't choose my words correctly. I was thinking when I wrote that post that someone would question it. By worldwide, I didn't mean every country or continent on the face of the Earth. The gist I was trying to impart to the person I replied to, was that there is no HD spec that's specific to the US/North America, as there was with NTSC. For example, I have no idea what France is going to replace SECAM with. But PAL vs NTSC issues should evaporate in the not too distant future. February 17, 2009 is the date for US broadcasters to cease analog transmission...the end of NTSC!
Sorry, didn't mean to highjack the thread but I felt compelled to dis-spell some myths about HD broadcast standards.
-gb-
|
Well, in a sense, you're correct; but it's too bad the U.S. couldn't agree with most of the countries on the same standard. Sure it's no longer 625 vs 525 lines, but U.S. and Europe still differ on frame rates, at least regarding terrestial TV broadcasting and modulation. Of course ATSC can accomodate 25/50 frame rates, but no one wants the 8 VSB modulation. In fact, some satellite companies here have adopted the European DSB-S/S2 standard, and cable companies refuse to adopt the 16 VSB modulation under ATSC's cable standard and went with their own, QAM 256. But you are essentially right; there is no real HD spec. Each standard can work together in theory.
Oh, to be politically correct, you are disspelling some myths about digital broadcast standards. High definition is a subset of digital television. Broadcast TV stations might opt to not air high definition. The advantage would be that they can broadcast multiple standard definition channels or they can use the extra space for Broadcast Internet or other data services. |
