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.
http://www.washingtonpost.com/wp-dyn/articles/A33127-1999Dec8.html
Can also be accessed by going to the home page and clicking on 'Vision of the Future'
Sincerely,
Kathryn Aegis
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
fax: 202-234-7510
TDD: 202-234-7590