This would certainly be an interesting implementation. Apple recently applied for the patent, and honestly I could see this really happening. I mean the darn 30-pin connector is almost as big as the current generation iPod Nano.
Furthermore, the iPod Shuffle which is about the same size, has no 30-pin connector and just syncs through the 3.5mm TRSS jack to USB. But if this patent is true it would completely destroy rumors of a redesigned iPod Nano.
Check out the redesigned iPod Nano and answer me this; Which would you prefer, a longer iPod Nano, or one with cool built-in tech like this?