That's why patents on this sort of thing are so dangerous. The steady march of the state of the art makes the impossible possible. When it first becomes possibl

That's why patents on this sort of thing are so dangerous. The steady march of the state of the art makes the impossible possible. When it first becomes possible, it seems novel, because no one has ever done it before. But it was the hard disk and the image sensor in the camera that was the invention, not "personal digital media".