Thanks to the digital technology revolution, cameras are everywhere--PDAs, phones, anywhere you can put an imaging chip and a lens. Battling to usurp this two-billion-dollar market is a Silicon Valley company, Foveon, whose technology not only produces a superior image but also may become the eye in artificially intelligent machines. Behind Foveon are two legendary figures who made the personal computer possible: Carver Mead of Caltech, one of the...