Pressure actuated biometric sensor
First Claim
1. A biometric device for fingerprint-recognition of a user, comprising:
- a fingerprint sensing module for capturing the fingerprint image of said user at a pre-specified pressure, further comprising;
a fingerprint capturing module for capturing said fingerprint image;
a pressure sensing module for measuring the pressure applied on said fingerprint capturing module;
a sensor memory for storing said pre-specified pressure; and
a sensor controlling module for actuating the capture of said fingerprint image at said pre-specified pressure.
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Abstract
The method and system disclosed herein decreases the rejection rate in fingerprint capturing and authentication by a pressure actuated fingerprint sensing module. The biometric device for fingerprint recognition of a user comprises a fingerprint sensing module for capturing the fingerprint image of the user at a pre-specified pressure, or a pre-specified pressure range. The fingerprint sensing module comprises a fingerprint capturing module, a pressure sensing module, a sensor memory and a sensor controlling module. The fingerprint capturing module captures the fingerprint when the pressure applied by the finger reaches the pre-specified pressure, or when the applied pressure falls within the pre-specified pressure range. The pressure sensing module measures the pressure applied on the fingerprint capturing module. The sensor memory stores a pre-defined set of pressures or pressure ranges. The sensor controlling module actuates the capture of the fingerprint image at a pre-specified pressure or in a pressure range.
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Citations
28 Claims
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1. A biometric device for fingerprint-recognition of a user, comprising:
a fingerprint sensing module for capturing the fingerprint image of said user at a pre-specified pressure, further comprising; a fingerprint capturing module for capturing said fingerprint image; a pressure sensing module for measuring the pressure applied on said fingerprint capturing module; a sensor memory for storing said pre-specified pressure; and a sensor controlling module for actuating the capture of said fingerprint image at said pre-specified pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
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15. The system of claim 15, wherein said flexible module comprises a curved spring, a U shaped spring, a flat spring and a flexible membrane.
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17. A method of capturing the fingerprint of a user at a pre-specified pressure comprising the steps of:
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setting a pre-specified pressure at which the fingerprint is captured; placing a finger on a fingerprint capturing module; monitoring pressure applied by the finger on the fingerprint capturing module; and
,capturing the fingerprint when the pressure applied by the finger on the fingerprint capturing module reaches the pre-specified pressure. - View Dependent Claims (18, 19)
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20. A method of capturing the fingerprint of a user at a pre-specified pressure range comprising the steps of:
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setting a pre-specified pressure range for capture of the fingerprint; placing a finger on a fingerprint capturing module; monitoring pressure applied by the finger on the fingerprint capturing module; and
,capturing the fingerprint when the pressure applied by the finger on the fingerprint capturing module is within the pre-specified pressure range. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification