Acceleration sensor module with attitude determining function
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United States of America Patent
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Jul 8, 2014
Grant Date -
Jun 7, 2012
app pub date -
Aug 18, 2010
filing date -
Aug 18, 2009
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Abstract
An X-axis acceleration level determining section determines whether an X-axis acceleration signal output from a three-axis acceleration sensor has a value equal to or more than a predetermined positive threshold level, a value equal to or less than a predetermined negative threshold level, a value between the positive threshold level and a level of 0, or a value between the level of 0 and the negative threshold level. A Y-axis acceleration level determining section also makes a similar determination for a Y-axis acceleration signal output from the three-axis acceleration sensor. An attitude determining section determines the rotated attitude of a device equipped with the three-axis acceleration sensor with respect to the Z axis based on results of determinations made by the X-axis acceleration level determining section and the Y-axis acceleration level determining section.
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