This may be similar to the CNN website that Sasha Chislenko posted a few days ago, but thought I would pass it along. It contains a description of the chip/microcamera vision experiments, along with diagrams.
Can also be accessed by going to the home page and clicking on 'Vision of the Future'
Asst. to the Exective Director
Disability Rights Council of Greater Washington 11 Dupont Circle, Suite 400
Washington, DC 20036
phone: 202-234-7550, ext. 6