I'm with Jeff on this one. Why?
Ginseng has a morphophysiological dormancy in which the embryo needs to continue to grow after the berries fall off the parent plant. This 'after ripening' phase takes place after that first winter, and the primary dormancy then must be broken by another winter or cold period.
So, technically, I guess one could shorten the amount of the cold periods by artificially chilling the seeds and then artificially warming them. This gets you to Jeff's answer wherein germination can be had in one year instead of two. However, I still fail to see where this is a real benefit because of the extra handling and cost going into doing in one year what nature will do on her own in two (sometimes three) years. The problem is that seed planning to be sown outside needs to be on a natural timing at that point.