HAND HELD POINTING DEVICE WITH ROLL COMPENSATION
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Abstract
A pointing device includes accelerometers and rotational sensors that are coupled to a processor. The processor samples the accelerometers and rotational sensors to detect gravity and pointing device motion and uses algebraic algorithms to calculate roll compensated cursor control signals. The processor transmits the cursor control signals to a receiver that is coupled to an electronic device that moves the cursor on the visual display.
2 Citations
42 Claims
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1-35. -35. (canceled)
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36. A pointing device for controlling movement of a cursor on an electronic display comprising:
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a first rotational sensor providing a first rotational velocity signal RX for rotational movement about a first axis; a second rotational sensor providing a second rotational velocity signal RZ for rotational movement about a second axis; a first accelerometer providing a first acceleration signal AX in response to a acceleration in a first direction along the first axis; a second accelerometer providing a second acceleration signal AZ in response to a acceleration in a second direction along the second axis; a third accelerometer providing a third acceleration signal AY in response to a acceleration in a third direction along a third axis, and a processing unit that calculates a first cursor movement signal compensated for roll angle and a second cursor movement signal compensated for pitch angle from RX, RZ, AX, AY and AZ. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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Specification