Microsoft and copy-protection company Macrovision have struck a deal that will add a new layer of anticopying defenses to video content being swapped between home devices. The two companies said that Microsoft had licensed Macrovision's technology, which aims to stop people from making copies using analog connections between devices, such as those that typically link a set-top box to a television. The deal could make it harder for consumers to make permanent copies of TV shows and movies without permission, if they use computers running the Windows operating system. It should also help convince movie studios and other content producers to release their products in new ways online, the companies said. "We think that long term, the studios will offer more interesting products over the Internet using this technology," said Brad Brunell, Microsoft's general manager of intellectual-property licensing.