Which is newer in lcd TVs precise pixel hd or perfect pixel hd enegine from Philips TVs?

Pixel Precise is "newer" in marketing terms, Perfect Pixel is already a year or so "old". Fact ist that Pixel Precise is the small brother of Perfect Pixel, while Precise has less processing power than Perfect. I tried to see if Perfect is "better" than Precise: to me it is invisible.... both are stunning !!