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En Garde! MEMS gyros penetrate smartphones

April 08, 2010 // Rick Merritt

En Garde! MEMS gyros penetrate smartphones

Miniature gyroscopes are being built into next-generation smartphones to provide new twists on user interfaces, mobile gaming and location-based services. Handset makers confirmed a report in January from a maker of MEMS-based gyros that said it had design wins in two smartphones.

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"I expect everyone to have them next year," said Jidesh Veeramachaneni, a technical advisor and chief of staff for the design team at Taiwan's HTC that builds a wide range of smartphones. MEMS gyros are "one of the most talked about things when I go to [smartphone] developer conferences," he said.

"People want to come up with new experiences [using gyros], and a lot of it is gaming related--you could do sword fighting games," said the HTC design manager. "Gyros also help provide a better sense of location even indoors, and that's been a big challenge" for location-based services, he added.

Such experiences could be key for 4G handsets using Long Term Evolution networks expected to start appearing in 2011, said Bjorn Ekelund, head of ecosystems and research at ST-Ericsson. For example, LTE handsets will enable mobile online gaming for the first time because the new network will reduce latency from as much as 200 milliseconds on 3G nets today to as little as 10 milliseconds on LTE.

"That's as good as a cable modem," said Ekelund. Online gaming "is not attractive when you have a round trip delay of up 200 milliseconds," he added.

Gyros will also help enable so-called augmented reality apps that LTE handsets hope to run. Some of the apps will provide detailed directions inside buildings such as malls or track the whereabouts of friends using mash-ups of location-based services and social networks, said Ekelund.

Gyros will begin to appear in high-end smartphones and other mobile devices later this year, said Satish Menon, an analyst with Forward Concepts (Tempe, Ariz.). They could appear in the next-generation Apple iPhones which are expected to debut in June and include user interface advances, according to Ben Reitzes of Barclays Capital.
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