Here it is, Rainer and others...
http://youtu.be/NH9yj3u5Nig
You can jump directly to the part where Lee describes POET's optical processing capabilities by going to 6:30 but I'd recommend starting at 3:20 for a rounded description of electronic and optical differences. Or just click on the YouTube link to Part 1 and listen to the whole presentation. It's quite informative, but remember that this was quite a while ago and there have been many changes in the company since.
Green