My Philips dvp 3256 Product mannual says this set is having a 12-bit/108MHz video processing for sharp, natural images.
Whats its means and how can i check this feature ?
Unless you have an option in the DVDP menus to switch this feature on/off, you will not be able to see the difference. An option is to hook up a cheapo DVDP (without this feature) first and then the 3256 and see if you could notice any difference.