Object orientation detection with a digitizer
First Claim
Patent Images
1. A digitizer system comprising:
- a stylus comprising;
a housing;
a writing tip, wherein the writing tip is configured to protrude from the housing; and
three transmitters for transmitting signals, wherein the two transmitters are positioned along the housing at a pre-defined distance from one another;
wherein one of the three transmitting elements is configured to transmit a signal around the writing tip of the stylus and wherein another of the three transmitting elements is configured to transmit a signal from a position off a longitudinal axis of the stylusa digitizer sensor configured to sense signals transmitted by each of the three transmitters at its projected location on a sensing surface of the digitizer sensor;
a circuit associated with the digitizer sensor, the circuit configured to track the projected location on the digitizer sensor of each of the three transmitters based on the signals sensed; and
a processor configured to;
track both position of the writing tip and orientation of the housing based on the projected locations; and
recognize a user input to the sensing surface based on both the position of the writing tip and the orientation of the stylus.
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Abstract
A digitizer system includes a stylus comprising a plurality of transmitters for transmitting signals, wherein each of the plurality of transmitters are distanced from one another by a defined distance, a digitizer sensor operable for sensing signals transmitted by the plurality of transmitters, and circuitry associated with the digitizer sensor for tracking a projected location on the digitizer sensor of each of the plurality of transmitters based on the signals sensed, and for tracking a geometric relationship between the projected locations.
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Citations
24 Claims
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1. A digitizer system comprising:
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a stylus comprising; a housing; a writing tip, wherein the writing tip is configured to protrude from the housing; and three transmitters for transmitting signals, wherein the two transmitters are positioned along the housing at a pre-defined distance from one another; wherein one of the three transmitting elements is configured to transmit a signal around the writing tip of the stylus and wherein another of the three transmitting elements is configured to transmit a signal from a position off a longitudinal axis of the stylus a digitizer sensor configured to sense signals transmitted by each of the three transmitters at its projected location on a sensing surface of the digitizer sensor; a circuit associated with the digitizer sensor, the circuit configured to track the projected location on the digitizer sensor of each of the three transmitters based on the signals sensed; and a processor configured to; track both position of the writing tip and orientation of the housing based on the projected locations; and recognize a user input to the sensing surface based on both the position of the writing tip and the orientation of the stylus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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tracking projected locations of each of three transmitting elements comprised in a stylus, wherein each of the three transmitting elements transmit a signal while the stylus is interacting with a digitizer sensor and wherein the three transmitting elements are displaced from each other; wherein one of the three transmitting elements transmits a signal around the writing tip of the stylus and wherein another of the three transmitting elements transmits a signal from a position off a longitudinal axis of the stylus; tracking position of a writing tip of the stylus and an orientation of the stylus based on the projected locations; and recognizing a user input to the sensing surface based on both the position of the writing tip and the orientation of the stylus. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification