Apparatus and method for determining the position of a device
First Claim
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1. A method comprising:
- determining a first movement distance and a first movement direction for a first point on a device, and a second movement distance and a second movement direction for a second point on the device; and
determining a location and an orientation of the device based on the first movement distance and the first movement direction and the second movement distance and the second movement direction;
identifying when the device loses physical contact with a medium; and
selecting a spatial tracking mode when the device loses physical contact with the medium, wherein the spatial tracking mode determines three dimensional coordinates from an inertial motion sensor.
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Abstract
An apparatus and method are disclosed for use in a device, such as a handheld printer or scanner, having functionality that requires information of its position relative to an origin and initial orientation. The module includes two sensors to generate movement data indicative of movement direction and orientation changes of the device. The location and orientation of the device relative to the origin and initial orientation is derived based on the movement data. A handheld printer or scanner implementing the device may thus be moved in different directions across a media to print or scan images, text, or other objects.
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Citations
29 Claims
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1. A method comprising:
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determining a first movement distance and a first movement direction for a first point on a device, and a second movement distance and a second movement direction for a second point on the device; and determining a location and an orientation of the device based on the first movement distance and the first movement direction and the second movement distance and the second movement direction; identifying when the device loses physical contact with a medium; and selecting a spatial tracking mode when the device loses physical contact with the medium, wherein the spatial tracking mode determines three dimensional coordinates from an inertial motion sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification