The idea is simple - do away with the tiny filters on the pixels and use the whole CCD for red, then for blue, then for green, using a big filter for each colour. A CCD that genuinely captures a 6000 pixel square image costs a fortune, even for a monochrome version. But a trilinear CCD array such as is used in a single pass flatbed scanner can capture a 6000 dot wide colour image one line at a time for a lot less. In digital photography, this is done by putting a scanner array in the back of a large-format studio camera. Unfortunately, scanning-back cameras, as they're called, can take minutes to photograph a scene, which makes them utterly useless for action photography or subjects that don't like being brightly lit for that period of time.
Conventional flashes are no good.
Ingenious design can allow humans some input into the interpolation process, which scanning back cameras still have to deal with. Leaf's Catchlight studio camera has four different coloured filters in a random pattern on the scan head. The user can choose from four interpolation algorithms and see which one makes the shot look best. Here's a quick glossary of the basic photographic terms you need to understand to make sense of digital and film camera specs. Read it when nobody's looking so you'll look more knowledgeable when they are.