System for sensing yaw rate using a magnetic field sensor and portable electronic devices using the same
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United States of America Patent
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Issued Date -
Feb 21, 2008
app pub date -
Jul 10, 2007
filing date -
Jul 10, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An attitude- and motion-sensing system for an electronic device, such as a cellular telephone, a game device, and the like, is disclosed. The system, which can be integrated into the portable electronic device, includes a two- or three-axis accelerometer and a three-axis magnetic compass. Data about the attitude of the electronic device from the accelerometer and magnetic compass are first processed by a signal processing unit that calculates attitude angles (pitch, roll, and yaw) and rotational angular velocities. These data are then translated into input signals for a specific application program associated with the electronic device.
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