As noted above, this is not a new idea. I reviewed the "high-end" version of a laser or digital turntable -- The $19,000.00 ELP
Corporation LT-2XRC Laser Turntable -- over a decade ago (see link below). Just a quick note - for those of you that think all reviewers give glowing reviews or are pressured by the Editors to be complimentary for advertising reasons, you will see I called it as I saw (or heard) it.
http://www.soundstage.com/vinyl/vinyl200509.htm
http://www.soundstage.com/vinyl/vinyl200509.htm