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`

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`mobile games, including one that allows users to swing the handset like
`
`a golf club and hit golf balls on a virtual driving range.
`
`While many of the cool new applications can be done using three-axis
`
`accelerometers, experts agree that combining that technology on a
`
`single chip with a gyroscope, which can be used to measure rotational
`
`speed, could provide even finer sensory control.
`
`An opening for gyroscopes?
`
`Gyroscopes are important for providing stabilization, said Steve Nasiri,
`
`CEO oflnvensense. Like accelerometers, gyroscopes have been used
`
`for years in the automotive industry, where they are used to help
`
`stabilize cars so they don't roll over. Gyroscopes are also used in
`
`devices that require accurate balance sensing, such as the Segway.
`
`lnvensense is already supplying digital-camera companies with its tiny,
`
`MEM-based gyroscopes to help stabilize cameras and improve picture
`
`quality, especially on higher-megapixel cameras. This application alone
`
`could provide a huge opportunity to companies like lnvensense, which is
`
`trying to combine gyroscopes with accelerometers.
`
`"The mobile handset market is the ultimate market to be in," Nasiri said.
`
`"With 700 million camera phones sold each year and over 50 percent of
`
`them with 3 megapixels or more, there is a real need for this technology."
`
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`In addition to image stabilization, gyroscopes used in combination with
`
`three-axis accelerometers could also help deliver more-accurate
`
`location and navigational services. Today, GPS receivers use internal
`
`compasses to help get a fix on which direction the phone is pointing. So
`
`if you are using a navigation service to get directions to the closest
`
`Starbucks, the phone will know if you are facing north, south, east or
`
`west. But the compasses work better when the devices are held
`
`perfectly horizontal--a position that can be difficult to maintain. A
`
`combination accelerometer and gyroscope could help stabilize the
`
`device to get a better read.
`
`While Lemaire of Analog Devices agrees that integrating gyroscopes
`
`into a chipset that also has an accelerometer could improve accuracy, he
`
`also said that much of the improved functionality can be achieved with
`
`three-axis accelerometers alone, especially since gyroscopes are
`
`expensive, consume a lot of power and add bulkiness to devices.
`
`"Gyroscopes provide greater range of motion, that's true," he said. "But
`
`thejury is still out on whether you can make a suitable
`
`gyroscope/accelerometer chip. Handset makers are looking for cheaper,
`
`lower-power and smaller components. That is their priority rather than
`
`adding more functionality, especially when it only adds marginal value."
`
`But lnvensense says it is developing a combined three-axis
`
`accelerometer and gyroscope that will meet price, power consumption
`
`and size constraints appropriate for mobile devices. Commercial
`
`products are at least a year away, but the company is already talking to
`
`major handset manufacturers, Nasiri said. In December, lnvensense
`
`Page 3 of 4
`
`Page 3 of 4
`
`

`

`announced Qualcomm had taken a strategic investment in the company
`
`Whether handset makers use three-axis accelerometer chips only or a
`
`combination chip that has both an accelerometer and gyroscope,
`
`experts agree that the best way to ensure the technology is adopted
`
`and the market takes off is to enable applications that help mobile
`
`operators generate revenue.
`
`"I don't think that handset makers will integrate a $2 sensor simply to
`
`allow people to scroll through screens better," said Marlene Bourne,
`
`president and principal analyst for Bourne Research. "But using it to
`
`improve picture quality, so that I actually want to send pictures I've taken
`
`on my phone to friends and family, which generates traffic on a carrier's
`
`network, might be worth it."
`
`E] POST A COMMENT
`
`Mobile Q
`
`for an undisclosed amount, lending more credibility to the firm's strategy.
`
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