dvd upconversion not working

[isunshine]

I just got a 40inch HDTV and a dvd player that has the upconverter built in. The DVD player has a resolution setting button that allows me to choose either 480i, 720p, or 1080i. But no matter which resolution I choose, the picture quality stays the same. Does anyone know why this is the case? I'm connected though the HDMI. Here are the models of my TV and DVD player:

Samsung HDTV Model: LN-R409D
- http://samsung.com/Products/TV/LCDTV/LNR409DXXAA.asp

LG DVD Player Model: LDA511 http://www.circuitcity.com/ssm/LG-HD-Conversion-DVD-Player-LDA511-/sem/rpsm/oid/120206...oductDetail.do

[oldandinthe way]

Are you connected through HDMI? Many upconvert DVD players only upconvert through the HDMI connector.

[Baldrick]

I'm connected though the HDMI

[isunshine]

Yes and I'm using this HDMI cable: Acoustic Research PR184 - http://www.araccessories.com/Cultures/en-US/Recoton+AR/Product+Catalog.htm?ModelNum=PR...ductDetail=YES

[gshelley61]

The internal scaler in your Samsung HDTV is probably doing a very good job of converting each output setting you choose (480i, 480p, 720p, 1080i) to 1366x768p, the native resolution of the display. Also, a 40" LCD is not that large of a screen, so small image differences may not be as noticeable as they are on something like a 56" DLP, for example.

You should check your instructions to see if your upscaling DVD player has a 768p setting, too. That would provide your display with a 1:1 pixel mapped image, and you may see a bit of difference in that case because the TV's built-in scaler would not be used.