Here's the link to the patent:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,536,726.PN.&OS=PN/7,536,726&RS=PN/7,536,726The abstract:
Restricted software and hardware usage on a computer
Abstract
A client computer runs an operating system that executes additional applications by loading them using an application loader and executes device drivers for peripheral devices by loading the drivers using a device loader. The operating system restricts the functionality of the operating system, such as by making selected portions and functionality of the operating system unavailable to the user or by limiting the user's ability to add software applications or device drivers to the computer. Additionally, various techniques can be used to remove or reduce the functionality limitations of the computer.
It's a patent on a method to allow an operating system to disable all or part of itself from functioning. Software manufacturers already do this. The particular patent in question was filed in 2005, and the technology is part and parcel of Vista's method of distribution, i.e. you get a "version" of the OS and have to pay to "unlock" greater functionality.
That doesn't really bother me as such. They can do what they want with their software, and I can choose not to buy it because they do that.
What bothers me is the belief system at work, to wit that open architecture systems are flawed because any old code monkey can write software that runs on those systems. The patented technology allows the operating system to disable that ability, e.g. to prevent from functioning device drivers that would provide functionality to hardware the creators of the OS don't want working with their OS. You can read that as a method of preventing high definition display systems from functioning properly if they have not passed the RIAA "security" tests.