I can't view the images, but I'm pretty sure the patent number you refer to describes a different type of protection, one that is designed to hinder unlicensed development. A scheme along these lines exists on Mega/Sega CD and Dreamcast, and a simpler version is even found in later models of Genesis/Megadrive. Basically, the game media must contain a particular program that is compared to one in the BIOS. If they are the same, the code is executed. This is the code that displays the "Produced by or under license from Sega Enterprises" screen, and also the logo I believe. The point of all this is that the code is (presumably) protected by copyright law, and thus in order to produce a disc that will run on the Saturn, a license must be obtained or the publisher will risk being sued by Sega for copyright infringement. Nintendo uses a similar scheme for Game Boy.