Method of interacting with printed substrate
First Claim
1. A method of interacting with a printed substrate, the method comprising the steps of:
- providing the printed substrate, said substrate having printed thereon;
human-readable information and a position-coding pattern comprising a plurality of target elements and coded data, said coded data identifying an identity of the substrate and a plurality of locations on the substrate, the human-readable information being coincident with the position-coding pattern;
interacting with the substrate using an optically imaging pen, said pen having a nib;
optically imaging target elements and coded data;
calculating a position of the nib; and
generating digital ink in the pen, said digital ink being indicative of the identity of the substrate and the position of the nib relative to the substrate; and
sending the digital ink to a computer system such that the computer system identifies the interaction with the substrate,wherein the position of the nib is calculated using the coded data, a perspective transform and a known spatial relationship between an optical axis of the pen and the nib, and wherein the perspective transform is determined using the imaged target elements which are perspective-distorted due to a tilt of the pen.
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Accused Products
Abstract
A method of interacting with a printed substrate. The comprises the steps of: interacting with the substrate using an optically imaging pen having a nib; optically imaging target elements and coded data; calculating a position of the nib; and generating digital ink in the pen, the digital ink being indicative of the identity of the substrate and the position of the nib relative to the substrate; and sending the digital ink to a computer system such that the computer system can identify the interaction with the substrate. The position of the nib is calculated using the coded data, a perspective transform and a known spatial relationship between an optical axis of the pen and the nib. The perspective transform is determined using the imaged target elements which are perspective-distorted due to a tilt of the pen.
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Citations
15 Claims
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1. A method of interacting with a printed substrate, the method comprising the steps of:
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providing the printed substrate, said substrate having printed thereon;
human-readable information and a position-coding pattern comprising a plurality of target elements and coded data, said coded data identifying an identity of the substrate and a plurality of locations on the substrate, the human-readable information being coincident with the position-coding pattern;interacting with the substrate using an optically imaging pen, said pen having a nib; optically imaging target elements and coded data; calculating a position of the nib; and generating digital ink in the pen, said digital ink being indicative of the identity of the substrate and the position of the nib relative to the substrate; and sending the digital ink to a computer system such that the computer system identifies the interaction with the substrate, wherein the position of the nib is calculated using the coded data, a perspective transform and a known spatial relationship between an optical axis of the pen and the nib, and wherein the perspective transform is determined using the imaged target elements which are perspective-distorted due to a tilt of the pen. - View Dependent Claims (2, 3, 4, 5)
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6. A system for interacting with a printed substrate, the system comprising:
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the printed substrate, said substrate having printed thereon;
human-readable information and a position-coding pattern comprising a plurality of target elements and coded data, said coded data identifying an identity of the substrate and a plurality of locations on the substrate, the human-readable information being coincident with the position-coding pattern; andan optically imaging pen having a nib, said pen being configured to; image the target elements and the coded data; calculate a position of the nib; generate digital ink in the pen, said digital ink being indicative of the identity of the substrate and the position of the nib relative to the substrate; and send the digital ink to a computer system such that the computer system identifies the interaction with the substrate, wherein the position of the nib is calculated using the coded data, a perspective transform and a known spatial relationship between an optical axis of the pen and the nib, and wherein the perspective transform is determined using the imaged target elements which are perspective-distorted due to a tilt of the pen. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An optically imaging pen having a nib for interacting with a printed substrate, said substrate having printed thereon:
- human-readable information and a position-coding pattern comprising a plurality of target elements and coded data, said coded data identifying an identity of the substrate and a plurality of locations on the substrate, the human-readable information being coincident with the position-coding pattern, wherein said pen is configured to;
image the target elements and the coded data; calculate a position of the nib; generate digital ink in the pen, said digital ink being indicative of the identity of the substrate and the position of the nib relative to the substrate; and send the digital ink to a computer system such that the computer system identifies the interaction with the substrate, wherein the position of the nib is calculated using the coded data, a perspective transform and a known spatial relationship between an optical axis of the pen and the nib, and wherein the perspective transform is determined using the imaged target elements which are perspective-distorted due to a tilt of the pen. - View Dependent Claims (13, 14, 15)
- human-readable information and a position-coding pattern comprising a plurality of target elements and coded data, said coded data identifying an identity of the substrate and a plurality of locations on the substrate, the human-readable information being coincident with the position-coding pattern, wherein said pen is configured to;
Specification