Compression of IMU data for transmission of AP
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United States of America Patent
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Mar 17, 2015
Grant Date -
Sep 6, 2012
app pub date -
Mar 27, 2012
filing date -
Nov 6, 2009
priority date (Note) -
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Abstract
A method, controller and system in accordance with various aspects of the present disclosure facilitate reduced energy consumption in a motion sensing device having an inertial measurement unit (IMU), with a strap down integration unit, and an application processing unit (AP). The system and method include rounding velocity increments and orientation increments at the inertial measurement unit, thereby producing a remainder values. The remainder values are added to subsequent velocity increments and orientation increments prior to rounding of those values, and so on. In this way, while motion granularity is slightly decreased, there is no drift of integration errors over time.
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