Hand-held wireless electronic device with accelerometer for interacting with a display
First Claim
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1. A hand-held wireless electronic device for interacting with a display, the device comprising:
- a MEMS accelerometer responsive to tilt of the device in a plurality of axes wherein;
the accelerometer comprises an integrated circuit that generates a digital tilt signal responsive to the projection of static gravity on the tilted accelerometer;
the accelerometer is most sensitive to tilt when the accelerometer is perpendicular to gravity; and
the digital tilt signal comprises an accelerometer pitch signal and an accelerometer roll signal where pitch and roll are rotations about two perpendicular axes orthogonal to the gravitational vector;
a linear input element that generates an electrical signal having a magnitude responsive to user input;
a digital electronic circuit connected to the accelerometer and connected to the linear input element wherein the circuit;
calculates pitch information using an inverse trigonometric function in response to said accelerometer pitch signal;
calculates roll information using an inverse trigonometric function in response to said accelerometer roll signal;
calculates radius information in response to the electrical signal from the linear input element; and
calculates at least one characteristic of an object in an inertial reference frame in Cartesian coordinates in response to said radius information, said pitch information, and said roll information wherein said object characteristic is chosen from the group of a position, an orientation, or a size;
a communications module electrically coupled to the electronic circuit wherein;
the communications module communicates said object characteristic to a receiving element of a display; and
the communications module further comprises a wireless communications element that sends a digital serial data transmission signal;
a battery that powers the accelerometer, the linear input element, the digital electronic circuit and the communications module; and
a circuit that manages the battery and optimizes power consumption for the device.
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Abstract
A device and method for interacting with a display using an accelerometer sensitive to tilt about two perpendicular axes and a third signal having a magnitude responsive to user input. The device and method allow a user to change a characteristic of an object on the display by converting pitch information, roll information, and a linear dimension into Cartesian coordinates for use by the display.
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Citations
20 Claims
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1. A hand-held wireless electronic device for interacting with a display, the device comprising:
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a MEMS accelerometer responsive to tilt of the device in a plurality of axes wherein; the accelerometer comprises an integrated circuit that generates a digital tilt signal responsive to the projection of static gravity on the tilted accelerometer; the accelerometer is most sensitive to tilt when the accelerometer is perpendicular to gravity; and the digital tilt signal comprises an accelerometer pitch signal and an accelerometer roll signal where pitch and roll are rotations about two perpendicular axes orthogonal to the gravitational vector; a linear input element that generates an electrical signal having a magnitude responsive to user input; a digital electronic circuit connected to the accelerometer and connected to the linear input element wherein the circuit; calculates pitch information using an inverse trigonometric function in response to said accelerometer pitch signal; calculates roll information using an inverse trigonometric function in response to said accelerometer roll signal; calculates radius information in response to the electrical signal from the linear input element; and calculates at least one characteristic of an object in an inertial reference frame in Cartesian coordinates in response to said radius information, said pitch information, and said roll information wherein said object characteristic is chosen from the group of a position, an orientation, or a size; a communications module electrically coupled to the electronic circuit wherein; the communications module communicates said object characteristic to a receiving element of a display; and the communications module further comprises a wireless communications element that sends a digital serial data transmission signal; a battery that powers the accelerometer, the linear input element, the digital electronic circuit and the communications module; and a circuit that manages the battery and optimizes power consumption for the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A portable device for manipulating a graphical object in Cartesian space on a two-dimensional display, the device comprising:
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an accelerometer responsive to tilt of the device in a plurality of axes wherein; the accelerometer comprises a circuit that generates a tilt signal responsive to the projection of static gravity on the tilted accelerometer; the accelerometer is most sensitive to tilt when the accelerometer is perpendicular to gravity; and the tilt signal comprises an accelerometer pitch signal and an accelerometer roll signal where pitch and roll are rotations about two perpendicular axes orthogonal to the gravitational vector; an input element that generates an electrical signal having a magnitude responsive to user input; an electronic circuit connected to the accelerometer and connected to the input element wherein the circuit; comprises a control unit, a memory unit, a communications unit, and a battery, wherein the control unit further comprises a micro-controller and a machine readable storage device; calculates pitch information using an inverse trigonometric function in response to said accelerometer pitch signal; calculates roll information using an inverse trigonometric function in response to said accelerometer roll signal; calculates radius information in response to the electrical signal from the input element; and calculated at least one characteristic of an object in an inertial reference frame in Cartesian coordinates in response to said radius information, said pitch information, and said roll information; a communications module electrically coupled to the electronic circuit which generates a digital signal responsive to said pitch information, said roll information, and said roll information wherein; the digital signal is transmitted electronically to a receiving element connected to the display; and the digital signal can be used by circuitry coupled to the display to manipulate the graphical object on the display. - View Dependent Claims (16, 17)
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18. A method for presenting user manipulation of a portable device onto a display, the method comprising the steps of:
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establishing the portable device; establishing an inertial sensor in the portable device that generates a tilt signal responsive to a gravitational vector in the device wherein the inertial sensor comprises an accelerometer; measuring pitch and roll about two perpendicular axes orthogonal to the gravitational vector in response to the projection of static gravity on the tilted inertial sensor; establishing an additional input element that generates a signal in response to user input; using the additional input element to generate an electrical signal of a magnitude controlled by the user'"'"'s input; establishing an electronic circuit that comprises a control unit, a memory unit, and a communications unit, and an electrical storage device, wherein the control unit further comprises a micro-controller; connecting the circuit to the inertial sensor; connecting the circuit to the additional input element; using the circuit to calculate pitch and roll from the tilt signals; determining a distance in response to the electrical signal from the additional input element; establishing a display that shows objects in a minimum of two dimensions; using Cartesian coordinates to determine the location of a graphical object on the display by using the generated tilt information and the distance from the additional input element and a mathematical transformation from polar coordinates to Cartesian coordinates; establishing a battery to power the portable device; and establishing a circuit that manages the battery. - View Dependent Claims (19, 20)
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Specification