Microsoft patents watermark technology that may lock down DRM-free music
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(InfoWorld) - Microsoft has won a patent for a digital-watermarking technology that could be used to protect the rights of content owners even when digital music is distributed without DRM protection.  The technology, called "stealthy audio watermarking," inserts and detects watermarks in audio signals that can identify the content producer, "providing a signature that is embedded in the audio signal and cannot be removed," according to a filing with the U.S. Patent and Trade Organization (USPTO). The application for U.S. patent 7,266,697 was filed May 3, 2004, by Darko Kirovski and Henrique Malvar, both of whom work at Microsoft Research. Malvar is a Microsoft distinguished engineer and managing director of Microsoft Research in Redmond, Washington, and Kirovski is a researcher there. Microsoft currently has DRM technology called Windows Media DRM that encrypts audio files and protects them from misuse or unauthorized redistribution. The company has traditionally been an outspoken proponent of using DRM to protect owners of digital content, though it said earlier this year it would consider selling DRM-free songs online after rival Apple struck a deal with EMI Group to do so. Forensic digital watermarking technology like the technology Microsoft has patented doesn't encrypt files the way DRM technology does or prevent people from unauthorized use. However, it can be used to prove who owns the content of the digital file by encoding a file with a unique digital signature. That means illegally traded songs could be tracked back to the original purchaser, allowing authorities to identify illegal sharers and serving as a deterrent. The technology could also be used to track files for royalty distribution. In fact, Apple has been inserting simple watermarks into digital audio files that include personal information about the purchaser on some files sold over iTunes so those files can be traced back to their purchaser in the case of unauthorized distribution. However, Microsoft's watermark is much more intrinsic to the file and cannot be stripped out easily by hackers, like Apple's can, said J. Alex Halderman, a computer science PhD candidate at Princeton University who specializes in DRM technology. "It's much harder for people to remove from the recording," he said. The trick for these watermarks to be effective for digital music files, however, is that they must be inaudible and thus undetectable by those listening to the files, which has been difficult for those who have tried to create this technology in the past, Halderman said. Indeed, in their filing, Kirovski and Malvar acknowledged that to work properly, the watermarks must not only be inaudible, but also "must be scattered throughout the file in such a way that they cannot be identified and manipulated" and "be robust enough so that it can withstand normal changes to the file, such as reductions from ... compression algorithms." Microsoft Tuesday declined to comment on how it plans to use the watermark technology it has patented. However, Microsoft Research already has licensed similar yet non-forensic watermarking technology to a company called Activated Content, which is using the technology to insert and extract non-secure data into audio files.
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Technologies that let people record satellite and Internet radio broadcasts digitally are opening a new front in the recording industry's war on music piracy.
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LONDON - Six large technology and music companies announced Monday they have banded together in an attempt to bring some interoperability to the DRM (digital rights management) systems protecting digital content such as music and movies within the next nine months.
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Internet users who illegally download music and films could face losing access to the web
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doubleTwist rolls out media sharing utility doubleTwist, the firm founded by scourge of DRM manufacturers Jon Lech Johansen (AKA DVD Jon) last March, has released software designed to allow users to share digital media files - including copy protected content - across devices.â¦
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Apple Inc. Chief Executive Steve Jobs on Tuesday called on the four major record companies to start selling songs online without copy protection software known as digital rights management (DRM).
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A pilot program at the Microsoft Download Center will require users to validate their Windows license in exchange for access to file downloads. Users with counterfeit software may find themselves locked out altogether.
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Apple CEO Steve Jobs has made a surprise call for the end of digital rights management technology, which is designed to stop copyrighted music from being shared illicitly. Jobs says Apple would sell only DRM-free music on iTunes if it could.
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Recording-industry giants EMI and Sony BMG announced an umbrella agreement Monday to address digital rights management (DRM) issues for music on mobile phones, PCs and digital cable systems.
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(InfoWorld) - Web music stores have taken off with such gusto that now everyone wants to get in on the online media action, and the next battle ground is the digital movies and TV shows aimed at your living room. What users need to beware of amid the headlong rush to build digital music, movie and TV libraries is the terms of the digital rights management (DRM) attached to the files they're buying, which control the use of the files in various ways, including by restricting usage to a certain number of devices. DRM technology was developed to protect the music industry from illegal downloads, but it can also lock users into choosing one device, or family of devices. The fight may appear to have just started, but with portable media players such as the iPod so dominant, and their new appeal as view screens for downloaded movies and TV shows, its a decision users will have to make quickly. The time will soon come when it will be too expensive for a user to switch from, say Apple Computer Inc.'s iPod/iTunes/iTV platform to a rival platform because the DRM would ensure they have to buy a whole new music and movie collection. A future where users are stuck in one company's back pocket could be avoided if DRM licenses are broadly shared. But DRM appears to be on the verge of becoming a weapon to lock users in. "We see no consolidation of formats in the foreseeable future. It is Fairplay and Windows Media DRM for now and that may not change although the jury is still out on video as we are early on in the game for video. For audio the game is over," said Van Baker, vice president of media industry research for Gartner Inc. Fairplay is Apple Computer Inc.'s DRM technology. Songs purchased at the iTunes Store, for example, are meant to be used on only two devices, such as a computer and an iPod, and Fairplay helps enforce such rules. Microsoft Corp. has its own Windows Media DRM, which isn't compatible with Fairplay, so users, for example, cannot use Windows Media files on their iPods. And while Microsoft has been far more open to licensing its DRM than Apple, even creating a PlaysForSure logo to let users know which devices and files are compatible with Windows Media files, it may change its tune regarding such licenses. The company's new Zune media player is not compatible with PlaysForSure. That fact alone highlights how important Microsoft must view the Zune and Zune Marketplace, because in one fell swoop, it became a competitor to online music store partners and to PC and mobile phone makers that sell rival digital music devices. RealNetworks Inc. and Sandisk Corp. also joined the fray recently, highlighting the tight-fisted approach companies are taking. Users buying a Sandisk Sansa e200 series portable music player get RealNetwork's Rhapsody media service bundled inside, and a chance to pay a monthly subscription for music downloads. But if users cancel the subscription, the next time they connect to the Internet, Rhapsody will delete the songs from the music player and their PCs. Individual songs purchased on Rhapsody won't be deleted in such an instance, but since the songs will be tagged with RealNetworks' Helix DRM, users will have to make sure any new music playing software or hardware they buy supports Helix. The question of technology companies controlling the content users buy so enraged the French government that in June, it passed a law requiring companies to provide enough information about their DRM technology to enable competitors to create interoperable systems. There is also an industry group that could play knight in shining armor. The Digital Living Network Alliance (DLNA), which boasts hundreds of tech companies, including heavyweights such as Intel Corp., Sony Corp., Samsung Electronics Co. Ltd. and Lenovo Group Ltd., is working to select and promote an industry standard DRM to ensure digital files can be used on a wide range of devices companies make. Others are also hard at work on the issue, including groups intent on creating open-source DRM technologies, as well as hackers already figuring out ways to beat DRM. In the thick of what will likely end up a promotion and marketing fight, users will have to keep their heads about them and make up their minds. It could be wise to sit out this round of DRM controversy and wait to see which standard wins out, or to stick to traditional media and create digital files by ripping songs from CDs, for example. But it's definitely a time to pay attention. Nobody wants to build a library of favorite movies and songs, only to find that by switching to another computer or software makes it unusable. Â
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The tune seems to be changing ever so slowly at some record labels when it comes to DRM. Both out of consumer demand and to some extent necessity, some have begun to offer digital downloads in the unprotected MP3 format.
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Microsoft is currently working on a fix for its Windows Media Digital Rights Management (DRM) technology as users have figured out a way to get around the copyright protection.
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Content-recognition software could address a major entertainment industry concernâ songs and videos being posted on the Web without permission.
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Technologies that let people record satellite and Internet radio broadcasts digitally are opening a new front in the recording industry&#39;s war on music piracy.
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Apple is facing questions over user data placed in DRM-free tracks sold through iTunes.
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Microsoft Corp. is once again on the defensive against hackers after the launch of a new program that gives average PC users tools to unlock copy-protected digital music and movies.
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By Jefferson Graham  LOS ANGELES -- The music industry is looking ahead to life without copy protection.