Three-dimensional input sensing system
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United States of America Patent
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Oct 21, 2014
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app pub date -
May 7, 2012
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Jul 13, 2011
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Abstract
A three-dimensional (3D) input sensing system includes a 3D input device, a host, and a power managing unit. The 3D input device includes at least one 3D motion sensing unit, and transmits a radio frequency (RF) signal obtained from detected motion of the 3D input device. The host receives the RF signal from the 3D input device and obtains 3D coordinate information of the 3D input device. The power managing unit controls supply of power in the 3D input device upon determining that the latter has remained motionless for a predetermined time period.
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