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The DuoSense software identifies the position of the Pencil and the pressure level, removing the need for an excitation coil within the DuoSense digitizer and can be used either as an integral part of the solution or as an optional after-market accessory, enabling OEMs to offer system upgrades, making the Digital Pencil ideal for the consumer market.
ENGADGET: N-trig's Digital Pencil plays pen and fingertip roles, claims mastery of both
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The other arm carries a wire coil attached to an electric circuit in other words, an electromagnet.
ECONOMIST: Weighing a kilogram
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"No, there's an inductive coil built into to the underside of the counter, " was the reply.
ENGADGET
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Using a conductive capacitor that is integrated as part of the pen, it connects to an electromagnetic field generated by an excitation coil in the digitizer.
ENGADGET: N-trig's Digital Pencil plays pen and fingertip roles, claims mastery of both
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That allowed a 10x increase in power delivery -- up to 50 microwatts to a millimeter radius antenna coil -- to an implant five centimeters below the skin.
ENGADGET: Stanford researchers make heart implant powered by radio waves, put batteries out of a job
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The coil is suspended in an external magnetic field and the current running through it adjusted so that the attraction between the two magnets balances the gravitational force on the suspended mass.
ECONOMIST: Weighing a kilogram
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The chip, which requires no power, works like this: Up to four megabits of data are put into the chip by touching the dot with an encased coil about the width of a pencil eraser.
FORBES: Dot's A Lot
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The first bent trumpets were in the shape of a flattened S-curve, but they were soon made obsolete by trumpets whose tubing was fashioned into an elongated oval coil.
NPR: Young Tuba Player Gets Nod from Phila. Orchestra
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Additionally, with an embedded autofocus control with voice coil motor driver, the OV5645 offers further cost savings for manufacturers, making it a highly attractive alternative to other 5-megapixel sensors currently on the market.
ENGADGET: OmniVision unveils 5MP BSI sensor that takes low light cameras further into the entry level