Ultrasonic imaging scanner
First Claim
Patent Images
1. A fingerprint scanning system comprising:
- an imaging surface capable of receiving a finger;
an ultrasound transducer capable of providing information corresponding to a fingerprint of the finger;
a probe arm joined to the transducer, the probe arm having a pivot-location;
a crank arm pivotally connected to the probe arm;
a flywheel pivotally connected to the crank arm;
a flywheel driver capable of rotating the flywheel in order to cause the transducer to move along an arcuate path;
a linear driver capable of moving the pivot location linearly;
a measurer capable of measuring linear positions of the pivot-location and arcuate positions of the transducer; and
a coupler capable of coupling one linear position of the pivot-location and one arcuate position of the transducer with information from the transducer.
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Abstract
The invention includes a system and a method of scanning fingerprints. A system may include an imaging surface, an ultrasound transducer, a probe arm joined to the transducer, a driver capable of moving the pivot location linearly and the transducer arcuately, a measurer capable of measuring a linear position of the pivot-location and an arcuate position of the transducer, and a coupler capable of coupling information corresponding to the linear position and the arcuate position with information from the transducer.
29 Citations
28 Claims
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1. A fingerprint scanning system comprising:
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an imaging surface capable of receiving a finger; an ultrasound transducer capable of providing information corresponding to a fingerprint of the finger; a probe arm joined to the transducer, the probe arm having a pivot-location; a crank arm pivotally connected to the probe arm; a flywheel pivotally connected to the crank arm; a flywheel driver capable of rotating the flywheel in order to cause the transducer to move along an arcuate path; a linear driver capable of moving the pivot location linearly; a measurer capable of measuring linear positions of the pivot-location and arcuate positions of the transducer; and a coupler capable of coupling one linear position of the pivot-location and one arcuate position of the transducer with information from the transducer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A fingerprint scanning system comprising:
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an imaging surface capable of receiving a finger; an ultrasound transducer capable of providing information corresponding to a fingerprint of the finger; a probe arm joined to the transducer, the probe arm having a pivot location; a linear driver capable of moving the pivot location linearly; an arcuate driver capable of moving the transducer arcuately; a measurer capable of measuring a linear position of the pivot-location, and an arcuate position of the transducer; and a coupler capable of coupling the linear position of the pivot location, the arcuate position of the transducer, and the information from the transducer. - View Dependent Claims (15, 16, 17)
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18. A method of scanning a fingerprint comprising:
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(A) receiving a finger on an imaging surface; (B) providing (a) an ultrasonic transducer joined to a probe arm which is pivotable about a pivot-location, (b) a crank arm pivotally connected to the probe arm, (c) a flywheel pivotally connected to the crank arm, and (d) a flywheel-driver capable of rotating the flywheel in order to cause the transducer to move along an arcuate path; (C) recording a linear position of the pivot location to provide a linear recording; (D) recording an arcuate position of the ultrasonic transducer to provide an arcuate recording; (E) sending an ultrasonic signal from the ultrasonic transducer toward the finger; (F) receiving a reflected ultrasonic signal; (G) recording information about the reflected ultrasonic signal to provide recorded signal information; (H) coupling the recorded signal information with the linear recording and the arcuate recording; (I) rotating the flywheel using the flywheel driver; (J) repeating steps D through H; (K) moving the pivot-location linearly; (L) repeating steps C through J. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A method of scanning a fingerprint, comprising:
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providing (a) an ultrasound transducer capable of providing information corresponding to a fingerprint of the finger, (b) a probe arm attached to the transducer, the probe arm having a pivot location, (c) a linear driver capable of moving the pivot location linearly, the linear driver including a screw, and (c) an arcuate driver capable of moving the transducer arcuately about the pivot location; turning the screw to move the pivot location to a desired linear position; generating a first set of fingerprint information using the transducer at the linear position and a first arcuate position; moving the transducer arcuately to a second arcuate position using the arcuate driver; generating a second set of fingerprint information using the transducer at the linear position and the second arcuate position; detecting an amount of current being used by the linear driver, and providing an indication about the current being used; determining whether the indication exceeds a threshold level; if the indication exceeds the threshold level, then causing the linear driver to stop attempting to move the pivot location further.
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27. A method of scanning a fingerprint, comprising:
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providing (a) an ultrasound transducer capable of providing information corresponding to a fingerprint of the finger, (b) a probe arm attached to the transducer, the probe arm having a pivot location, (c) a linear driver capable of moving the pivot location linearly, and (c) an arcuate driver capable of moving the transducer arcuately about the pivot location; positioning the transducer in a waiting position; sending an ultrasonic signal; receiving a reflected ultrasonic signal; using the reflected ultrasonic signal, determining whether a finger has been presented for scanning to provide a determination signal; if the determination signal indicates a finger has been presented for scanning, then generating a first set of fingerprint information using the transducer at a first linear position and a first arcuate position; moving the transducer arcuately to a second arcuate position using the arcuate driver; generating a second set of fingerprint information using the transducer at the linear position and the second arcuate position. - View Dependent Claims (28)
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Specification