Method of data input into a computer
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United States of America Patent
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Jun 13, 2006
Issued Date -
N/A
app pub date -
May 21, 2003
filing date -
Feb 24, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A computer input device and method used to input coordinates and three-dimensional graphical information into a computer. The device includes an acceleration sensor that has a fixed volume vessel containing a magnetic fluid. A non-magnetic inertial body is located in the magnetic fluid. Three magnetic field sources are located on three perpendicular axes where each magnetic field source has an output for connection to a computer. Changes in Q-factors and inductance of electromagnetic coils aligned on the X, Y, and Z-axis of the sensor are used to compute linear and angular acceleration components of any movement involving the sensor which permits three-dimensional coordinates to be provided in real-time.
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