QUOTE (GeniuS312 @ May 7 2007, 04:31 PM)

My god, that is complicated !!
I have read that 1080P can only work if you use DVI, HDMI connector because the signal HAS to be digital. If you use component or something else, it is analog. LCDs are digital so a conversion from analog to Digital has to be done!
Even worst, PCs are digital, switch to analog (VGA connectors) then go back to digital for LCDs.
Based on that, if I want the real 1080p signal, I will need a PS3 or blue-ray/HD-dvd player, connected to me LCD controller with DVi cable.
My screen needs to support 1920x1080 or higher and then I have a real 1080p.
If I plug a PS2, or a computer which does not have a HDCP ready graphic card (older than Geforce 7600gt), I will only have 1920x1080. the signal from PS2 will be interlaced so the controller will change de signal to progressive which will result in a video quality loss ?
Am I right now ?

720p, 1080i & 1080p can only be transmitted on HDMI/DVI, VGA(RGBHV) and Component cables (YPbPr & YCbCr) as they are requried to carry the bandwidth of the signals. HDMI/DVI are mostly digital connections (although DVI does have pins for carrying analog as well, not sure about HDMI, but I believe they also have analog pins, but at any rate they are hardly used for our discussions). VGA is analog. Component YPbPr is analog while YCbCr is digital (Most component connections you'll see will be analog YPbPr).
Yes. LCD's are digital, PC's are digital. If you're using a VGA cable, then multiple digital/analog conversions are taking place. The best is to have a PS3/blue-ray/hd-dvd player connected to an LCD monitor/projector, etc. using a DVI or HDMI connection that way the signal stays digital all the way. HA ! .. this is where HDCP comes in. If a device is HDCP enabled, it will not transmit the full HD signal (720p, 1080i or 1080p) on DVI/HDMI unless that device is also HDCP enabled. (This is the problem with HDCP.. someone buys a new HD Digital "something", but alas if it's HDCP enabled and your TV, etc. is a few years old and not HDCP enabled, you won't get the benefits of a nice HD all digital connection... it will be downscaled, or simply not work)
A PS2 I belive only outputs 480i. (not exactly sure as I don't own one) At best I believe it might output 480p. At any rate 480p would require a component connection, so you could never feed it into a PC (without high cost) The more popular composite and s-video connections would be the 480i signal which could be fed into a PC, which would need to deinterlace them. Video cards are coming along way now and are much better at deinterlacing video, but there are software applications out there like Dscaler that will do a good job if your video card doesn't. If your feeding a PS2 480i signal to be displayed on a 1080p LCD, unless you have a good scaler in between, the signal is gonna really be kind of crappy. Why ? ... because the 480i signal from a PS2 is crap... and as the old addage goes... crap in; crap out.
this is really getting OT, so we can find a more appropriate place for this discussion if you want to discuss further.
cheers,
gs