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US 7,489,299 B2Granted
User interface devices and methods employing accelerometers
AssigneeHillcrest Laboratories, Inc.
InventorsMatthew G. Liberty, Daniel S. Simpkins
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Abstract
Systems and methods according to the present invention address these needs and others by providing a 3D pointing device and methods for 3D pointing which provide accurate translation of movement of the 3D pointing device into user interface commands, e.g., cursor movement. According to exemplary embodiments of the present invention, a 3D pointing device includes a plurality of accelerometers.
Claims11
A user interface device comprising:
- a housing;
- at least four accelerometer devices arranged in a non-coplanar configuration in said housing, each of said at least four accelerometer devices outputting respective accelerometer data;
- and
- a processing unit in said housing comprising an algorithm that translates said accelerometer data from each of said at least four accelerometer devices into two-dimensional pointer movement,
- wherein said algorithm reduces error by bounding device movement based on user movement characteristics.
2 more elements
A user interface device comprising:
- a housing;
- at least four accelerometer devices arranged in a non-coplanar configuration in said housing, each of said at least four accelerometer devices outputting respective accelerometer data,
- wherein each accelerometer device contains three accelerometers;
- and
- a processing unit in said housing comprising an algorithm with linear and non-linear components that translates said accelerometer data from each of said at least four accelerometer devices into two-dimensional pointer movement,
- wherein said algorithm with linear and non-linear components reduces error introduced by gravitational drift, temperature drift and user created tremor accelerations.
3 more elements
Dependencies are inferred from the claim text.