Sensing device for sensing a position within a region
First Claim
1. A method of sensing a region provided on or in a surface, the surface including one or more regions, each region having printed thereon coded data indicative of an identity of the region, the coded data including a number of data portions, each data portion in the same region encoding an identical identity, the method including:
- capturing a sequence of images of the coded data when a sensing device is placed in an operative position relative to one of the regions;
comparing the images to determine common features in the sequence of images; and
determining movement of the sensing device relative to the surface by determining changes in position of the common features between the sequence of images;
generating, using the sensed coded data, indicating data indicative of the identity of the region and movement of the sensing device; and
communicating the indicating data to a computer system.
1 Assignment
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Accused Products
Abstract
A sensing device for sensing a region provided on or in a surface having at least one region. The at least one region having printed therein or thereon coded data indicative of an identity of the at least one region, and visible information at least some of the information being at least partially related to the at least one region. The sensing device includes a sensor for sensing at least some of the coded data when the sensing device is placed in an operative position relative to the at least one region and generating indicating data. The indicating data is at least partially indicative of the identity of the at least one region and at least one of movement and a position of the sensing device relative to the at least one region. The sensing device includes a communicator configured to communicate the indicating data to a computer system.
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Citations
9 Claims
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1. A method of sensing a region provided on or in a surface, the surface including one or more regions, each region having printed thereon coded data indicative of an identity of the region, the coded data including a number of data portions, each data portion in the same region encoding an identical identity, the method including:
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capturing a sequence of images of the coded data when a sensing device is placed in an operative position relative to one of the regions; comparing the images to determine common features in the sequence of images; and determining movement of the sensing device relative to the surface by determining changes in position of the common features between the sequence of images; generating, using the sensed coded data, indicating data indicative of the identity of the region and movement of the sensing device; and communicating the indicating data to a computer system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification