Coordinate sensing system, coordinate sensing method and display system
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United States of America Patent
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Feb 13, 2018
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app pub date -
Feb 19, 2013
filing date -
Feb 20, 2012
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Abstract
A coordinate sensing system includes a magnetic member, a direction sensor, a first magnetic sensor and a processor, wherein the processor communicates with the direction sensor and is electrically connected to the first magnetic sensor. The magnetic member has a magnetic dipole moment. The direction sensor is used for sensing a direction of the magnetic dipole moment. The first magnetic sensor is used for sensing a first magnetic field of the magnetic member. The processor is used for calculating a first distance between the magnetic member and the first magnetic sensor and calculating a direction of the first distance according to a value of the magnetic dipole moment, the direction of the magnetic dipole moment and the first magnetic field. The processor is further used for calculating a coordinate of the magnetic member according to the first distance and the direction of the first distance.
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