There's another prototype of sensor (can't recall the name) that uses the energy of the photons to translate it into wavelength and then into color information.
Are you sure you aren't thinking of Roger's April Fool's Day post? http://www.lensrentals.com/blog/2013/04/wavelength-detecting-sensor-eliminates-bayer-filter-triples-resolution
Lol, yes. Maybe this is why I didn't recall it
My head moved the memory into the garbage can but forgot to clear it.
Why not Canon? AFAIK Canon develops sensors in their own company. O.k., they are behind others in some specs + IQ under different circumstances. But in 2005 when I decided to buy a 20D Canon had a great advantage: It's sensor reproduced great color and detail - much better than other cameras from other brands and it was a Canon developed +produced sensor.
They have to do something revolutionary - evolutionary development of existing 18MPix sensors will not satisfy us and I think we will see some revolutionary sensor within 2 or 3 years.
I was talking about money. Canon is not as big a company as Sony or Samsung. And imho before the Foveon actually gets to a point in which it can replace the Bayer sensors with no drawback, a lot of money has to go in R&D.