upconversion dvd player / HDTV question?

Question

I don't quite understand how a upconversion dvd player works?
If you own a good quality HDTV (fixed pixel display) then isn't your DVD players image already upscaled by displaying it on your HDTV? If not, then what's the purpose of the faroujda technolgy available in most HDTV's?

Answer 1

You are right, your TV will upconvert any input to the screen resolution. There are advantages to having the DVD player do the conversion, since the DVD player will make use of the field sequence markers to accurately de-interlace the 480i image that comes off the disc. Faroujda technology includes a proprietary techique for identifying the 3:2 film cadence for de-interlacing, and it's not 100% perfect, but marked fields are (assuming there is no error in the marking, as has sometimes occurred). If this is not clear, look up articles on de-interlacing and inverse telecine to get an idea os what I.m talking about.

http://en.wikipedia.org/wiki/Deinterlacing
http://en.wikipedia.org/wiki/Telecine

Edit: There is another advantage for upconversion in the DVD player even if the source is TV and not film. All upconverting DVD players output their upconverted signals on the HDMI connector. This means that the signal has remained digital entirely within the player, and will also be processed digitally in the TV set. Component output signals have gone through digital to analog conversion in the player, and then to a analog to digital conversion in the TV set for conversion to native display. Using an upconverting DVD player with HDMI interface avoids these converstions which can add noise and artifacts to the signal. Therefore, if your TV does not have an HDMI input, you gain nothing from an upconverting DVD palyer.

Answer 2

I myself have a 51" hdtv and an upconverting DVD player. HDTVs can generally handle a signal of up to 1080i. That is the resolution of the signal being displayed. When you have a regular cable signal or dvd signal it is not at that resolution. It is at something like 720p or 480i (non digital tv standard). What the tv does is streaches it to fit the screen. It makes it bigger but isn't as good of a picture. An upconverter takes the actual signal of the dvd player and boosts it instead of just streaching it that way it can display the picture at the full size and quality. Hope that helps.

Answer 3

There was a similar question on yahoo answers before--i am sending you the link for the same--you can check out the answers


http://answers.yahoo.com/question/;_ylt=AsIoA4oMLFzJII_GTlSxP_gjzKIX?qid=1006050131981