Speaking about how those in the industry who plan keeping the consumer barefoot and stupid:
This Sunday's Best Buy advertises the Mitsubishi 731 and lists a PC input.
Now what exactly is a PC input? Answer: it is a vague almost meaningless term!
Several years ago it used to mean an analog 15 pin VGA input. But at least then, every computer display could accept an input at its own native resolution.
So what do advertiser do today to sell inferior products but still claim PC input?
Take the 2006 Mits line with PC input. (Mits calls it True1080p)
Here it means an digital DVI-I input which can accept either a pure digital input (or analog) at the displays native resolution of 1920*1080@60Hz. No scaling is performed whatsoever.
Take the SXRD line with PC input. Advertisers lead you to believe that both are the same. This is far from the truth.
For SXRD it means the source must convert the signal from digital to analog, then send it over the VGA cable, then the display must convert the analog signal back to digital. Even worse the Sony SXRD will not even accept a signal through their PC input at the displays native 1920*1080 resolution. Why can it only accept up to 1366*768 resolution? Is this the real/defacto resolution?
The ultimate answer is because it is nearly impossible for the SXRD's three panels/sources of light to be PERFECTLY recombined using a single optical prism. There will always be errors which manifest themselves as miconvergence. Instead of seeing a single distinct white line you see separate red, green and blue lines like a rainbow. Some areas of the screen can be much worse than others. In any event some mistake this softness for a film-like image.
To cover up these errors, Sony forces the above limitations which introduce their own errors. Never allow fine text in the corners as it is bound to be its blurriest there. Their scheming hopes that you the consumer will never be able to figure out this somewhat complicated situation. If Sony were to allow real PC input, people would start complaining that reading blurry text (such as in surfing the Internet) gives them a headache. So the philosophy is to keep them dazed and confused and rely on brand loyalty instead.
So Best Buy is not being fair to Mitsubishi in simply claiming PC input. The end result of this mess, in that every few weeks someone starts a thread about not being able to use their expensive SXRD with their computer.
With its separate industry standard DVI PC input, the 2006 Mits line offers a truly superior low distortion input. As a result the Mitsubishi line is a far better match even for Sony's own (forever delayed) PS3.
Bottom line: There is no good reason why a display should not be able to accept digital data from any source and display it clearly, as the technology exists to do so today.