Holograms are undoubtedly spiffy-looking , but they’re not exactly cheap; even a basic holographic projector made from off-the-shelf parts can cost thousands of dollars . MIT researchers may have a budget-friendly alternative in the future, though. They’ve built a glasses-free 3D projector that uses two liquid crystal modulators to angle outgoing light and present different images (eight in the prototype) depending on your point of view. And unlike some 3D systems, the picture should remain relatively vivid — the technology uses a graphics card’s computational power to preserve as much of an image’s original information (and therefore its brightness) as possible. It’s not a flawless system, at least not right now. While the modulators work at a speedy 240Hz, the resulting output is just 40Hz. That’s fast enough for movies and TV shows, but a far cry from the 60Hz-plus that many regular TV sets can manage. To get wider viewing angles, MIT has also built a special screen using lenticular lenses like those you find in toys and children’s books. However, perfection isn’t really the point here. So long as the technology keeps advancing, it could lead to projectors with a “good enough” holographic effect that tides people over until real holography is within reach. Filed under: Displays Comments Via: Phys.org Source: MIT News , MIT Media Lab

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Glasses-free 3D projector offers a cheap alternative to holograms

AT&T clearly isn’t taking Comcast’s recent acquisition efforts lying down; it just announced plans to buy DirecTV in a deal worth about $48.5 billion. The communications giant sees a takeover as an opportunity to expand how it delivers video beyond just the bundles it has today. If officials approve the merger, AT&T could send conventional and internet-based video to virtually any place you happen to be, whether it’s on your phone or in mid-flight. This also represents a content grab — DirecTV has the exclusive rights to NFL Sunday Ticket and other premium programming, so there’s a chance that much of its content could reach U-verse and other AT&T offerings . The telecom is making a lot of promises to assuage regulators that will no doubt look at the proposed mega-buyout very closely — AT&T clearly wants to avoid a repeat of its failed attempt to buy T-Mobile in 2011. It hopes to bring high-speed internet access to 15 million additional customers, primarily in rural areas where a mix of fixed wireless and fiber-to-the-home could get people online. It’s also guaranteeing internet-only service plans fast enough for online video (“at least” 6Mbps) for the next three years, and it will honor the FCC’s 2010 net neutrality rules (which typically prevent blocking or throttling internet services) for that same period of time. DirecTV’s stand-alone packages would be available at consistent prices nationwide during this stretch, too. The move won’t affect AT&T’s plans to bid in the FCC’s upcoming wireless spectrum auction , and it estimates that the purchase will start adding value within about a year of closing. Whether or not it closes is another matter. The US government already has concerns about the possible anti-competitive effects of Comcast’s proposed buyout of Time Warner Cable; it’s likely that the feds will take a similar approach to AT&T and DirecTV. If Comcast runs into regulatory trouble, it won’t be surprising if AT&T ends up in the same boat. Update: Not surprisingly, consumer groups aren’t big fans. Free Press contends that AT&T has “clearly run out of ideas, ” and that the move is solely about eliminating competition. Consumer Reports ‘ advocacy wing, Consumers Union, also believes that Americans are getting a raw deal. You’ll find its full statement below. On the heels of Comcast’s bid for Time Warner Cable, AT&T is going to try to pull off a mega-merger of its own. These could be the start of a wave of mergers that should put federal regulators on high alert. AT&T’s takeover of DirecTV is just the latest attempt at consolidation in a marketplace where consumers are already saddled with lousy service and price hikes. The rush is on for some of the biggest industry players to get even bigger, with consumers left on the losing end. You can’t justify AT&T buying DirecTV by pointing at Comcast’s grab for Time Warner, because neither one is a good deal for consumers. [Image credit: Associated Press] AT&T buys DirecTV. Thoughts? Filed under: Home Entertainment , Internet , HD , AT&T Comments Source: AT&T

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AT&T to buy DirecTV for $48.5 billion (updated)