How Google Earth [Really] Works
Introduction
After reading an article called "How Google Earth Works" on the great site , it became apparent that the article was more of a "how cool it is" and "here’s how to use it" than a "how Google Earth [really] works."
So I thought there might be some interest, and despite some valid intellectual property concerns, here we are, explaining how at least part of Google Earth works.
Keep in mind, those IP issues are real. Keyhole (now known as Google Earth) was attacked once already with claims that they copied someone else’s inferior (IMO) technology. The suit pletely dismissed by a judge, but only after many years of pain. Still, it highlights one problem of even talking about this stuff. Anything one says could be fodder for some troll to claim he invented what you did because it "sounds similar." The judge in the Skyline v. Google case understood that "sounding similar" is not enough to prove infringement. Not all judges do.
Anyway, the solution to discussing "How Google Earth [Really] Works" is to stick to information that has already been disclosed in various forms, especially in Google’s own patents, of which there are relatively few. Fewer software patents is better for the world. But in this case, more patents would mean we could talk more openly about the technology, which, btw, was one of the original goals of patents — a trade
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