Nickname: Erick

Review: Ummm, techlady, you have a source for that "law?" It (1080p) is just an ATSC standard, there is no law that states what formats a TV must be able to accept for an input. The only "laws" coming down are mandated to have an ATSC tuner in TVs over certain sizes now, and all TVs by 2008 (or 9, or whenever--the date has been pushed back many times). The TV manufacturers can make whatever they want. Industry standards/consumers will dictate what's going to be used on the TV. Currently most TVs only have component inputs and can only take up to 1080i, based purely on bandwidth capacitiy of the cables. A new set needs HDMI or DVI (or even UDI) to receive a 1080p signal. Also to clarify: TV is 60 frames/sec. Interlaced signals are made up of two fields per frame (alternating 30 odd/30 even fields). Standard def (NTSC) signals are 480i, at 60 fps (made up of 30 odd & 30 even fields). The two "normal" HDTV standards are 720p (60 full frames/s) and 1080i (60 fields/s).

Date reviewed: Aug 18, 2006 8:10 PM

Nickname: techlady

Review: First, 1080p isn't new. It's one of the 18 HDTV formats that any HDTV--by law--must be able to receive. However, though they can receive all the 18 formats, what an HDTV actually can display is different. Few can display 1080 lines. But 720p looks really good. Personally I'd be happy with that. Also, you got the difference between interlaced and progressive scan wrong. Both do 60 frames per sec. In interlaced scan, the first frame shows lines 1,3,5,7,9, etc. The second frame shows lines 2,4,6,8, etc. Each frame shows every other line, essentially only half the picture. Your eye doesn't see the gaps, though there is less resolution and some motion artifacts with fast sports, basketball. In progressive scan, there is twice as much resolution interlaced. Pictures have a rock-solid character and feel much more realistic, especially with fast sports. Zenith used to have HD footage of the Chicago Bulls in 720p back in the '90s that was spectacular.

Date reviewed: Mar 1, 2006 1:58 AM

Nickname: Jeffrey L. Cleary

Review: Was there any difference in a 1080i image on the Sharp TV when compared to the 1080p? There should not be since they are both identical resolutions - 1080 x 1920 = 2,073,600 pixels on the screen.

Date reviewed: Feb 27, 2006 5:38 PM

Nickname: marcelo

Review: I guess it is the other way round, p is 30 and i is 60 frames/second (or fields to be more precise)

Date reviewed: Feb 23, 2006 9:32 PM