Pointer tool
First Claim
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1. Pointer tool for connecting to a display device, comprising:
- a plurality of sensor elements, positioned on a two-dimensional surface to form at least one linear image array and at least one linear correction array, to measure the presence of a fingertip surface at a chosen sample rate,storing means to store the measurements from each sensor element over time to create a sample history for each sensor element, andcalculating means to calculate the direction of motion of the fingertip surface based on the respective sample histories and relative positions of the plurality of sensor elements.
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Abstract
This invention relates to a pointer tool for connecting to a display device, comprising a number of sensors elements being positioned on a two dimensional surface, for measuring a predetermined parameter at a surface, the measured quantity being sampled at a chosen rate, and calculating means for comparing the measurements from the sensor elements for detection of movements in two dimensions over the elements based on changes in the measured parameter, the time between the changes and the known relative positions between the sensor elements.
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Citations
21 Claims
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1. Pointer tool for connecting to a display device, comprising:
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a plurality of sensor elements, positioned on a two-dimensional surface to form at least one linear image array and at least one linear correction array, to measure the presence of a fingertip surface at a chosen sample rate, storing means to store the measurements from each sensor element over time to create a sample history for each sensor element, and calculating means to calculate the direction of motion of the fingertip surface based on the respective sample histories and relative positions of the plurality of sensor elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Pointer tool for connecting to a display device, comprising:
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a plurality of sensor elements, positioned on a two-dimensional surface with known distances between the sensor elements, adapted to measure a predetermined parameter of a finger surface at a chosen rate, a first portion of the plurality of sensor elements forming a linear fingerprint sensor array and a remaining portion of the plurality of sensor elements being displaced from the linear fingerprint sensor array in a perpendicular direction; storing means for storing the measurements from each sensor element to provide a set of samples from each sensor element; and calculating means for comparing the samples from each sensor element with the samples from other sensor elements and for calculating a direction of motion of the finger surface in two dimensions.
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11. Pointer tool for connecting to a display device, comprising:
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a plurality of sensor elements, positioned on a two-dimensional surface to form a matrix fingerprint scanner, to measure the presence of a fingertip surface at a chosen sample rate, storing means to store the measurements from each sensor element over time to create a sample history for each sensor element, and calculating means to calculate the direction of motion of the fingertip surface based on the respective sample histories and relative positions of the plurality of sensor elements.
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12. A pointer tool for a display device, comprising:
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a plurality of finger sensor elements disposed within a first pair of parallel arrays and a second pair of parallel arrays, the first and second array pairs arranged perpendicularly; a memory to store measurements from each sensor element over time to create a sample history for each sensor element, and a processor, coupled to the memory and the finger sensor elements, to determine a direction of finger motion over the finger sensor elements based on relative positions and respective sample histories of the sensor elements. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification