3 ms·

I am curious how they got around the patent. http://www.freepatentsonline.com/6658577.pdf http://www.freepatentsonline.com/6658577.pdf

• encoderer 16y ago
  They license it? Or it's different enough to not conflict? I don't know.
• smackfu 16y ago
  Patents are stricter than you may think and the descriptions of them in the media often gloss over what is actually being patented.