Live-scan ultrasonic four-finger planar 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 driver capable of moving the pivot location linearly and the transducer arcuately;
a measurer capable of measuring linear and arcuate positions of the transducer;
a coupler capable of coupling the linear and arcuate positions of the transducer with information from the transducer; and
a fluidic ultrasound transmission medium between the imaging surface and the transducer;
a gas scavenging molecular sieve.
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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 linear and arcuate positions of the transducer, and a coupler capable of coupling information corresponding to linear and arcuate positions of the transducer with information from the transducer.
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Citations
14 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 driver capable of moving the pivot location linearly and the transducer arcuately; a measurer capable of measuring linear and arcuate positions of the transducer; a coupler capable of coupling the linear and arcuate positions of the transducer with information from the transducer; and a fluidic ultrasound transmission medium between the imaging surface and the transducer; a gas scavenging molecular sieve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of scanning a fingerprint comprising:
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(A) receiving a finger on an imaging surface; (B) providing an ultrasonic transducer capable of providing information corresponding to a fingerprint of the finger; (C) recording a linear position of the ultrasonic transducer 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 through a fluidic ultrasound transmission medium toward the finger; (F) receiving a reflected ultrasonic signal at the ultrasonic transducer; (G) recording information about the reflected ultrasonic signal; (H) coupling the recorded signal information with the linear recording and the arcuate recording; (I) moving the ultrasonic transducer arcuately; (J) repeating steps D through H; (K) moving the ultrasonic transducer linearly; (L) repeating steps C through J; and (M) scavenging gas with a molecular sieve. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification