First, we observed NTSC video at 480i, and liked it, because you do not know any better. Then some (and by) intrepid home theater enthusiasts had the chance to 480p, thanks to the Faroudja LD-100 enjoy doubler line or Runco IDTV configurations. Because the Faroudja units cost $ 20,000.00 in the early 90s, and only with the data or graphics grade projectors worked, were not only the mass market. As technology improved, prices fell and more people could enjoy free progressive scan videoin their home theater.
Fast forward 15 years or so. Now you can add a DVD player with Faroudja Progressive Scan on a chip for less than $ 200.00. They can buy almost all the TV and projector, it does progressive scan. In fact, digital TV and home theater projectors are progressive video conversion, because they need the video to progressive scan feature set to the native resolution. If the video is not the right format, will be converted into the set. Most DLPused or LCD imaging chips used in televisions and projectors, consumers now have a native resolution of the two vertical lines 480, 576 or 720. Most LCD and plasma lines were 480, 720 or 768.
In the fall of 2005, manufacturers began to show the latest generation of video products. Here! 1080p! Why all the fuss? Why 1080p is the top dog in HDTV, so. It has the highest resolution of all 18 approved HDTV formats with 1920 x 1080 pixels. There are two circuit breakers in 1080HDTV, 1080/60i, 1080/30p. The advantage is that in 1080i to 1080p as a computer monitor, a display 1080p will show all 1080 lines, with each video field, while a device will only show half the 1080th time. Digital displays require progressive video, so any program is defined in the 1080th deinterlaced and converts it to 1080p. Until the advent of 1080p displays, it was up to the native resolution of the imaging chip or converted flat.
A restrictionthis place, remarkably enough, that many of the first generation 1080p TVs do not accept 1080p input. Huh? You read that right. And 'true 1080p filed Sept. 1, only the HP-units actually accept 1080p inputs. Mitsubishi accept 1080p, but only through his computer input devices. The majority of flat panel displays do not seem to have accepted this limitation and 1080p.
At this point there is no commercially available program material 1080p, with the exceptionSome of Microsoft Windows Media HD discs. As for HDTV 720p or 1080i is possible, but not 1080p at this time. Fox, ESPN and ABC broadcast in 720p. while CBS, NBC, TNT, the WB and HD-Net using all 1080i. Soon, however, Sony will release Blu-Ray and Toshiba DVD-DH. HD-DVD and Blu-Ray will have the ability to support 1080p. When the time comes, you can only buy or rent a disc, enjoying 1080p in all its beauty. Good News! Netflix has announced it is to rent bothBlu-Ray and HD-DVD when they are introduced.
0 comments:
Post a Comment